1
|
Song JS, Jung S. The pH acidity and nitrate accumulation by plasma discharge enhanced the growth and phytochemicals of soybean sprouts grown in reused water. Food Chem X 2024; 22:101345. [PMID: 38623501 PMCID: PMC11016968 DOI: 10.1016/j.fochx.2024.101345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 03/26/2024] [Accepted: 03/31/2024] [Indexed: 04/17/2024] Open
Abstract
This study investigated the effect of plasma treatment on reused water and evaluated the interactions of the plasma-treated water (PTW) with plants or microbes to determine the optimal PTW for reuse. The repeated treatment gradually accumulated nitrate (NO3-) in the PTW and lowered its pH; afterward, it led to the sprouted soybeans accumulating other inorganic ions in the PTW. The biomass of soybean sprouts was enhanced by the accumulated NO3- but decreased due to the pH effect. Meanwhile, the acidic pH reduced the microbial counts, but they increased after sprinkling the PTW over the sprouts. The optimal PTW in our study, which had a gradual increase of NO3- (≤321.8 mg·L-1) with an acceptable pH (≥pH 3), significantly enhanced the biomass by 4.2% compared to the untreated control. Additionally, it increased the total content of amino acids and isoflavones by 9% and 18% in the growing part, respectively.
Collapse
Affiliation(s)
- Jong-Seok Song
- Institute of Plasma Technology, Korea Institute of Fusion Energy, 37 Dongjangsan-ro, Gunsan, 54004, Republic of Korea
- Department of Plasma and Nuclear Fusion, UST-KFE School, 169-148 Gwahak-ro, Yuseong-gu, Daejeon 34133, Republic of Korea
| | - Sunkyung Jung
- Institute of Plasma Technology, Korea Institute of Fusion Energy, 37 Dongjangsan-ro, Gunsan, 54004, Republic of Korea
| |
Collapse
|
2
|
Berger SS, Høgberg J, Kuntke F, Obari L, Larsen H. Automated wash and reuse of disposable pipette tips in a SARS-CoV-2 RT-qPCR diagnostic pipeline. Diagn Microbiol Infect Dis 2024; 109:116241. [PMID: 38452555 DOI: 10.1016/j.diagmicrobio.2024.116241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Revised: 02/07/2024] [Accepted: 03/01/2024] [Indexed: 03/09/2024]
Abstract
The Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) pandemic led to global shortages in laboratory consumables, in particular for automated PCR. The Technical University of Denmark supported Danish hospitals from 2020 to 2022, conducting SARS-CoV-2 RT-qPCR on around 10,000 patient samples daily. We encountered shortages of disposable pipette tips used with automated liquid handlers that transferred oropharyngeal swab samples to 96-well microplates before RNA extraction. To enable tip reuse, we developed an automated protocol for washing tips with a 0.5 % sodium hypochlorite solution. This effectively eliminated carry-over of genomic material and the wash solution remained effective when stored in an open reservoir at ambient temperatures for 24 h. A three-day validation setup demonstrated the robustness of the tip wash protocol. Reducing the number of tips used for transferring samples to 96-well microplates from 96 to 8 enabled us to mitigate pipette tip shortages, lower costs, and minimize plastic waste generation.
Collapse
Affiliation(s)
- Sanne S Berger
- Centre for Diagnostics, Department of Health Technology, Technical University of Denmark, Kemitorvet, Building 202, 2800 Kgs. Lyngby, Denmark.
| | - Jonas Høgberg
- Centre for Diagnostics, Department of Health Technology, Technical University of Denmark, Kemitorvet, Building 202, 2800 Kgs. Lyngby, Denmark
| | - Franziska Kuntke
- Centre for Diagnostics, Department of Health Technology, Technical University of Denmark, Kemitorvet, Building 202, 2800 Kgs. Lyngby, Denmark
| | - Louisa Obari
- Centre for Diagnostics, Department of Health Technology, Technical University of Denmark, Kemitorvet, Building 202, 2800 Kgs. Lyngby, Denmark
| | - Helene Larsen
- Centre for Diagnostics, Department of Health Technology, Technical University of Denmark, Kemitorvet, Building 202, 2800 Kgs. Lyngby, Denmark
| |
Collapse
|
3
|
Alsa'di A, Mahmoud N, Al-Khatib IA. Utilization of treated municipal effluent for irrigating agricultural land in Palestine: The driving factors and existing practices. Environ Res 2024; 242:117578. [PMID: 37952857 DOI: 10.1016/j.envres.2023.117578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 10/24/2023] [Accepted: 11/01/2023] [Indexed: 11/14/2023]
Abstract
This article investigates the motivations and practices of using treated wastewater (TWW) to irrigate crop fields in Jenin, Palestine. Around 40 farmers were surveyed for data collection. The results showed that 66% of the farmers grew alfalfa crops while 30% grew fruit trees. The main obstacles the farmers faced before starting to use TWW were disgust (68.2%), worries about the quality of TWW (68.2%), health concerns (63.6%), and concerns about adverse effects on the soil (63.6%). All interviewed farmers considered the establishing and funding of an irrigation project to be the cornerstone for any reuse project. The second most important driving factor was the price of TWW that is 10-25% of the fresh water prices. After reusing TWW for irrigation, 59% of the farmers did not use any fertilizer, but they were not sufficiently aware of the crops' water needs, nor the nutrients in the TWW. All the fodder-growing farmers abstained from selling their crops before drying. The farmers used the TWW for five to nine months annually. After the TWW was reused, the main positive impacts of the TWW reuse were increased crop yields (77.3%), crops quality (50.0%), and crops marketing (47.7%). On the other hand, the main negative impacts were blocking of the irrigation systems (77.3%) and release of odors (54.5%). After practicing TWW use in crops irrigation, the key factors contributed to the "no difference" index were the effects on human health (100%), soil quality (56.8%), and insects spread (54.5%). Therefore, the results of the study support the decision makers to implement TWW reuse policies for crop irrigation in arid regions with scarce water resources. Monitoring TWW reuse and training farmers and helping them overcome obstacles is essential.
Collapse
Affiliation(s)
- Ahmad Alsa'di
- Faculty of Graduate Studies, Birzeit University, P.O. Box 14, Birzeit, West Bank, Palestine
| | - Nidal Mahmoud
- Institute of Environmental and Water Studies, Birzeit University, P.O. Box 14, Birzeit, West Bank, Palestine.
| | - Issam A Al-Khatib
- Institute of Environmental and Water Studies, Birzeit University, P.O. Box 14, Birzeit, West Bank, Palestine
| |
Collapse
|
4
|
Sebastian SL, Kalivel P, Subbiah K, David JJ, Stephen AMM, Palanichamy J. Electrocoagulation using Ti/Ti for the remediation and reuse of aqueous Dispersive Blue-79. Environ Monit Assess 2024; 196:177. [PMID: 38243084 DOI: 10.1007/s10661-024-12320-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Accepted: 01/05/2024] [Indexed: 01/21/2024]
Abstract
The entire ecology is contaminated by the synthetic dyes that are widely utilised in the textile industries. They can be handled using a variety of technologies, but an eco-friendly method called electrocoagulation has been used to prevent additional contamination. Textile wastewater containing disperse dyes are successfully treated in Electrocoagulation (EC) utilizing Al, Fe, and Stainless Steel (SS), but it is not cost effective, also the treated water contains certain mg/L of the metals used, along with dye components, which obstructs the reuse of the same. The effects of initial pH, applied voltage, dye concentration, supporting electrolyte, and treatment time on the colour removal efficiency (CRE) and consumption of energy were examined in EC process followed by activated charcoal filtration (hybrid process) with a monopolar Ti/Ti electrode on the remediation of aqueous solution of Dispersive Blue-79 (dye 3G). The maximum CREobtained was 99.4%, chemical oxygen demand (COD) 93%, and biological oxygen demand (BOD) 85%, under the following optimized operating conditions, applied voltage 15 V, pH = 7, concentration of dye, electrolyte 110 mg/L, 0.2 g/L and time = 15 min. The overall operating cost for the treatment of aqueous dye 3G was 0.455US/m3. The mechanism of EC was studied using XPS analysis in the sludge obtained. For the purpose of the reuse, FTIR, AAS, and ICP-OES analysis were done and compared with the aqueous dye 3G, after EC and hybrid process to ensure the maximum removal of the degraded dye components and metal. ICP-OES results showed that there were no traces of metal in the treated aqueous dye 3G using this method. Throughout the study, the experimental outcomes indicated that the hybrid process upgraded the quality of the treated aqueous dye 3G.
Collapse
Affiliation(s)
- Sahaya Leenus Sebastian
- Department of Applied Chemistry, Karunya Institute of Technology and Sciences, Coimbatore, 641114, Tamil Nadu, India
| | - Parameswari Kalivel
- Department of Applied Chemistry, Karunya Institute of Technology and Sciences, Coimbatore, 641114, Tamil Nadu, India.
| | - Kavitha Subbiah
- Department of Biotechnology, Karunya Institute of Technology and Sciences, Coimbatore, 641114, Tamil Nadu, India
| | - Jovitha Jane David
- Department of Applied Chemistry, Karunya Institute of Technology and Sciences, Coimbatore, 641114, Tamil Nadu, India
| | - Asath Murphy Maria Stephen
- Department of Applied Chemistry, Karunya Institute of Technology and Sciences, Coimbatore, 641114, Tamil Nadu, India
| | - Jegathambal Palanichamy
- Water Institute, Karunya Institute of Technology and Sciences, Coimbatore, 641114, Tamil Nadu, India
| |
Collapse
|
5
|
Ahmed MMM, Chen KY, Tsao FY, Hsieh YC, Liu YT, Tzou YM. Promotion of phosphate release from humic acid-iron hydroxide coprecipitates in the presence of citric acid. Environ Res 2024; 240:117517. [PMID: 37914010 DOI: 10.1016/j.envres.2023.117517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 10/15/2023] [Accepted: 10/24/2023] [Indexed: 11/03/2023]
Abstract
Phosphate (P) resources are expected to be depleted within a century. Therefore, promoting balanced phosphorus fertilizer use and understanding phosphorus dynamics in soils containing iron (III), organic acids, and iron (III)-organic molecule particulates is crucial. This study investigated the sorption of citric acid onto humic acid-iron hydr(o)xide coprecipitate (HAFHCP) and the reciprocal effects of citric acid and P sorption on HAFHCP with different C/Fe ratios. The results showed that the maximum sorption capacity (MSC) of citric acid on HAFHCP decreased with increasing C/Fe ratios in the HAFHCP. The P sorption on HAFHCP pre-sorbed with citric acids (denoted as C-P) decreased by 50% compared with that of the MSC on FH. However, citric acids could only reduce P sorption by 20% when P was pre-sorbed on HAFHCP (denoted as P-C). The results suggested that upon the formation of HAFHCP, citric acids might increase P availability, especially in the C-P system. Although citric acids initially inhibited P sorption on HAFHCP in the P-C system, P sorption increased with prolonged reaction time. The exposures of new sorption sites upon dissolution of Fe from HAFHCP by citric acids or/and the formations of Fe bridge between P and organic domains of HAFHCP might contribute to these results. Additionally, a number of large HAFHCP aggregates became smaller while sorbing P due to the increasing electric repulsion on the surfaces of FH, enabling the subsequent dissolutions of more Fe by citric acids from HAFHCP in the P-C system. By integrating these innovative and sustainable strategies, the recycling and reuse of P can be optimized, thereby minimizing the reliance on synthetic fertilizers and mitigating environmental impacts. This approach fosters the efficient utilization of phosphorus resources, improves soil fertility, and enhances the overall resilience of agricultural systems and ecosystems.
Collapse
Affiliation(s)
- M M M Ahmed
- Department of Soil and Environmental Sciences, National Chung Hsing University, Taichung, 40227, Taiwan
| | - Kai-Yue Chen
- Professional Bachelor Program of Farm Management, National Chiayi University, Chiayi, 600355, Taiwan
| | - Fang-Yu Tsao
- Department of Soil and Environmental Sciences, National Chung Hsing University, Taichung, 40227, Taiwan
| | - Yi-Cheng Hsieh
- Office of the Texas State Chemist, Texas A&M AgriLife Research, Texas A&M University System, College Station, TX, 77843, USA
| | - Yu-Ting Liu
- Department of Soil and Environmental Sciences, National Chung Hsing University, Taichung, 40227, Taiwan; Innovation and Development Centre of Sustainable Agriculture, National Chung Hsing University, Taichung, 40227, Taiwan.
| | - Yu-Min Tzou
- Department of Soil and Environmental Sciences, National Chung Hsing University, Taichung, 40227, Taiwan; Innovation and Development Centre of Sustainable Agriculture, National Chung Hsing University, Taichung, 40227, Taiwan.
| |
Collapse
|
6
|
Chang YC, Reddy MV, Tsukiori Y, Mawatari Y, Choi D. Production of polyhydroxyalkanoates using sewage and cheese whey. Heliyon 2023; 9:e23130. [PMID: 38144304 PMCID: PMC10746463 DOI: 10.1016/j.heliyon.2023.e23130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 11/14/2023] [Accepted: 11/27/2023] [Indexed: 12/26/2023] Open
Abstract
Recently, polyhydroxyalkanoates (PHAs) have been produced using raw sewage in our laboratory; however, the production concentrations are low. Therefore, this study aimed to enhance PHA production by applying different strategies. PHA production was higher in sewage-containing medium than in mineral salt medium and was enhanced 22-fold after glucose supplementation. A relatively high degree of glucose consumption (83.6 ± 1.59 %) was also achieved. Bacteria incubated with cheese whey diluted with sewage showed higher PHA production than bacteria incubated with cheese whey diluted with distilled water did. The expression of the PHA synthase gene (phaC) was evaluated via real-time polymerase chain reaction using low- and high-carbon-containing sewage. Relatively higher phaC expression levels were observed in high-carbon-containing sewage but at lower nitrogen concentrations. The characteristics of the produced PHA were comparable to those of standard PHA. Therefore, this study revealed that the bacterium Bacillus sp. CYR1 can produce PHA from low- or high-carbon-containing wastewater.
Collapse
Affiliation(s)
- Young-Cheol Chang
- Course of Chemical and Biological Engineering, Division of Sustainable and Environmental Engineering, Muroran Institute of Technology, Hokkaido, 050-8585, Japan
| | - M. Venkateswar Reddy
- Department of Civil and Environmental Engineering, Colorado State University, Fort Collins, CO, 80523, USA
| | - Yusei Tsukiori
- Course of Chemical and Biological Engineering, Division of Sustainable and Environmental Engineering, Muroran Institute of Technology, Hokkaido, 050-8585, Japan
| | - Yasuteru Mawatari
- Research Center for Environmentally Friendly Materials Engineering, Muroran Institute of Technology, Hokkaido, 050-8585, Japan
| | - DuBok Choi
- Faculty of Advanced Industry Convergence, Chosun University, Gwangju, 61452, South Korea
| |
Collapse
|
7
|
Verlicchi P, Lacasa E, Grillini V. Quantitative and qualitative approaches for CEC prioritization when reusing reclaimed water for irrigation needs - A critical review. Sci Total Environ 2023; 900:165735. [PMID: 37495137 DOI: 10.1016/j.scitotenv.2023.165735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Revised: 07/18/2023] [Accepted: 07/21/2023] [Indexed: 07/28/2023]
Abstract
The use of reclaimed water for irrigation is an option that is becoming increasingly widespread to alleviate water scarcity and to cope with drought. However, reclaimed water, if used for irrigation, may introduce Contaminants of Emerging Concern (CECs) into the agroecosystems, which may be taken up by the crops and subsequently enter the food chain. The number of CECs is steadily increasing due to their continuous introduction on the market for different uses. There is an urgent need to draw up a short list of potential high priority CECs, which are substances that could be taken up by plants and accumulated in food produce, and/or that could have negative effects on human health and the environment. This review presents and discusses the approaches developed to prioritize CECs when reclaimed water is (re-)used for irrigation. They are divided into quantitative methodologies, which estimate the risk for environmental compartments (soil and water), predators and humans through equations, and qualitative methodologies, which are instead conceptual frameworks or procedures based on the simultaneous combination of data/information/practices with the judgment of experts. Three antibiotics (erythromycin, sulfamethoxazole and ciprofloxacin), one estrogen (17-α ethinylestradiol) and one analgesic (ibuprofen) were found on at least two priority lists, although comparison among studies is still difficult. The review remarks that it is advisable to harmonize the different methodologies in order to identify the priority CECs to include in monitoring programs in reclaimed water reuse projects and to ensure a high level of protection for humans and the environment.
Collapse
Affiliation(s)
- Paola Verlicchi
- Department of Engineering, University of Ferrara, Via Saragat 1, Ferrara 44122, Italy.
| | - Engracia Lacasa
- Department of Engineering, University of Ferrara, Via Saragat 1, Ferrara 44122, Italy; Department of Chemical Engineering, University of Castilla-La Mancha, Campus Universitario s/n, Albacete 02071, Spain.
| | - Vittoria Grillini
- Department of Engineering, University of Ferrara, Via Saragat 1, Ferrara 44122, Italy.
| |
Collapse
|
8
|
Mittal Y, Srivastava P, Pandey S, Yadav AK. Development of nature-based sustainable passive technologies for treating and disinfecting municipal wastewater: Experiences from constructed wetlands and slow sand filter. Sci Total Environ 2023; 900:165320. [PMID: 37414182 DOI: 10.1016/j.scitotenv.2023.165320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2023] [Revised: 06/15/2023] [Accepted: 07/02/2023] [Indexed: 07/08/2023]
Abstract
There is an urgent need to develop low-cost technology for effective wastewater treatment and its further disinfection to the level that makes it economically useful. This work has designed and evaluated the various types of constructed wetlands (CWs) followed by a slow sand filter (SSF) for wastewater treatment and disinfection. The studied CWs were, CWs with gravels (CW-G), free water surface-CW (FWS-CWs), and CWs integrated microbial fuel cell (MFC) with granular graphite (CW-MFC-GG) planted with Canna indica plant species. These CWs were operated as secondary wastewater treatment technologies followed by SSF for disinfection purposes. The highest total coliform removal was observed in the combination of CW-MFC-GG-SSF which achieved a final concentration of 172 CFU/100 mL, whereas faecal coliform removal was 100 % with the combinations of CW-G-SSF and CW-MFC-GG-SSF, achieving 0 CFU/100 mL in the effluent. In contrast, FWS-SSF achieved the lowest total and faecal coliform removal attaining a final concentration of 542 CFU/100 mL and 240 CFU/100 mL, respectively. Furthermore, E. coli were detected as negative/absent in CW-G-SSF and CW-MFC-GG-SSF, while it was positive for FWS-SSF. In addition, the highest turbidity removal was achieved in CW-MFC-GG and SSF combination of 92.75 % from the municipal wastewater influent turbidity of 82.8 NTU. Furthermore, in terms of overall treatment performance of CW-G-SSF and CW-MFC-GG-SSF, these systems were able to treat 72.7 ± 5.5 % and 67.0 ± 2.4 % of COD and 92.3 % and 87.6 % of phosphate, respectively. Additionally, CW-MFC-GG also exhibited a power density of 85.71 mA/m3 and a current density of 25.71 mW/m3 with 700 Ω of internal resistance. Thus, CW-G and CW-MFC-GG followed by SSF could be a promising solution for enhanced disinfection and wastewater treatment.
Collapse
Affiliation(s)
- Yamini Mittal
- CSIR-Institute of Minerals and Materials Technology, Bhubaneswar, Odisha 751013, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Pratiksha Srivastava
- Department of Chemical and Environmental Technology, Rey Juan Carlos University, Móstoles, Madrid, Spain
| | - Sony Pandey
- CSIR-Institute of Minerals and Materials Technology, Bhubaneswar, Odisha 751013, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Asheesh Kumar Yadav
- CSIR-Institute of Minerals and Materials Technology, Bhubaneswar, Odisha 751013, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India.
| |
Collapse
|
9
|
Han C, Xie J, Shi Q, Liang L, Yang T, He S. Capturing Cu 2+ and recycling spent Cu-adsorbents as catalyst for eliminating Rhodamine B: reactivity and mechanism. Environ Sci Pollut Res Int 2023; 30:110352-110362. [PMID: 37783993 DOI: 10.1007/s11356-023-29942-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2023] [Accepted: 09/13/2023] [Indexed: 10/04/2023]
Abstract
The thorny problem of adsorption is the disposing of spent adsorbent. In this manuscript, the exhaust adsorbent of efficient capture Cu(II) over ZSM-5 that supported zero-valent iron (nZVI) was reused as a catalyst for eliminating Rhodamine B (RhB). Batch experiments were used to evaluate the removal performance of Cu2+ and RhB. The results demonstrated that the Cu2+ adsorption process obeyed pseudo-second-order kinetics, and the adsorption performance was dependent on solution pH. The maximum adsorption capacity at the optimal pH 4.0 was 375.9 mg/g; equilibrium was reached rapidly within 35 min. From XPS, the reduction-oxidation between Fe0 and Cu2+ was occurred in the adsorption process, and Fe2+, Fe3+, and Cu0 was formed. In the recycling experiments, RhB was removed by the spent Cu adsorbent, with the removal performance being dependent on the initial Cu concentration, in the order of 5 mg/L > 20 mg/L > 0 mg/L > 100 mg/L > 500 mg/L. RhB removal also improved with increasing H2O2 concentration. More than 99.9% of the RhB was degraded within 8 min using 1.75 mM H2O2, which was a large improvement over the previously used catalyst. The hydroxyl radical was found to be the main free radical responsible for RhB degradation.
Collapse
Affiliation(s)
- Caiyun Han
- Guangxi Colleges and Universities Key Laboratory of Environmental-friendly Materials and New Technology for Carbon Neutralization, Guangxi Key Laboratory of Advanced Structural Materials and Carbon Neutralization, School of Materials and Environment, Guangxi Minzu University, Nanning, 530105, China.
| | | | - Qin Shi
- Guangxi Colleges and Universities Key Laboratory of Environmental-friendly Materials and New Technology for Carbon Neutralization, Guangxi Key Laboratory of Advanced Structural Materials and Carbon Neutralization, School of Materials and Environment, Guangxi Minzu University, Nanning, 530105, China
| | - Liying Liang
- Guangxi Colleges and Universities Key Laboratory of Environmental-friendly Materials and New Technology for Carbon Neutralization, Guangxi Key Laboratory of Advanced Structural Materials and Carbon Neutralization, School of Materials and Environment, Guangxi Minzu University, Nanning, 530105, China
| | - Ting Yang
- Guangxi Colleges and Universities Key Laboratory of Environmental-friendly Materials and New Technology for Carbon Neutralization, Guangxi Key Laboratory of Advanced Structural Materials and Carbon Neutralization, School of Materials and Environment, Guangxi Minzu University, Nanning, 530105, China
- Research Center for Analysis and Measurement, Kunming University of Science and Technology, Kunming, 650093, People's Republic of China
| | - Sufang He
- Research Center for Analysis and Measurement, Kunming University of Science and Technology, Kunming, 650093, People's Republic of China
| |
Collapse
|
10
|
Santos MPF, Ferreira MA, Junior ECS, Bonomo RCF, Veloso CM. Functionalized activated carbon as support for trypsin immobilization and its application in casein hydrolysis. Bioprocess Biosyst Eng 2023; 46:1651-1664. [PMID: 37728765 DOI: 10.1007/s00449-023-02927-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2023] [Accepted: 09/12/2023] [Indexed: 09/21/2023]
Abstract
This study aimed to immobilize trypsin on activated carbon submitted to different surface modifications and its application in casein hydrolysis. With the aim of determining which support can promote better maintenance of the immobilized enzyme. Results showed that pH 5.0 was obtained as optimal for immobilization and pH 9.0 for the casein hydrolysis reaction for activated carbon and glutaraldehyde functionalized carbon. Among the supports used, activated carbon modified with iron ions in the presence of a chelating agent was the one that showed best results, under the conditions evaluated in this study. Presenting an immobilization yield of 95.15% and a hydrolytic activity of 4.11 U, same as soluble enzyme (3.76 U). This derivative kept its activity stable at temperatures above 40 °C for1 h and when stored for 30 days at 5 °C. Furthermore, it was effective for more than 6 reuse cycles (under the same conditions as the 1st cycle). In general, immobilization of trypsin on metallized activated carbon can be an alternative to biocatalysis, highlighting the advantages of protease immobilization.
Collapse
Affiliation(s)
- Mateus P F Santos
- Process Engineering Laboratory, State University of Southwest Bahia, BR 415, km 04, s/n, Itapetinga, BA, 45700-000, Brazil
| | - Matheus A Ferreira
- Graduate Program in Agronomy, State University of Southwest Bahia, Estrada Bem Querer, km-04 s/n, Vitória da Conquista, BA, 45083-900, Brazil
| | - Evaldo C S Junior
- Process Engineering Laboratory, State University of Southwest Bahia, BR 415, km 04, s/n, Itapetinga, BA, 45700-000, Brazil
| | - Renata C F Bonomo
- Process Engineering Laboratory, State University of Southwest Bahia, BR 415, km 04, s/n, Itapetinga, BA, 45700-000, Brazil
| | - Cristiane M Veloso
- Process Engineering Laboratory, State University of Southwest Bahia, BR 415, km 04, s/n, Itapetinga, BA, 45700-000, Brazil.
| |
Collapse
|
11
|
Gandye Y, Mutagaywa R, Sackett M, Minja D, Kajuna E, Kisenge R. Retrieval of fragmented coronary sinus catheter in the right atrium: A first novel multidisciplinary approach in sub-Saharan Africa. Heart Rhythm O2 2023; 4:660-661. [PMID: 37936666 PMCID: PMC10626180 DOI: 10.1016/j.hroo.2023.08.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2023] Open
Affiliation(s)
- Yona Gandye
- Department of Electrophysiology and Pacing, Jakaya Kikwete Cardiac Institute, Dar es Salaam, Tanzania
| | - Reuben Mutagaywa
- Department of Electrophysiology and Pacing, Jakaya Kikwete Cardiac Institute, Dar es Salaam, Tanzania
| | - Mathew Sackett
- Electrophysiology and Pacing, Centra Heart and Vascular Institute, Lynchburg, Virginia
| | - Dickson Minja
- Department of Electrophysiology and Pacing, Jakaya Kikwete Cardiac Institute, Dar es Salaam, Tanzania
| | - Edna Kajuna
- Department of Electrophysiology and Pacing, Jakaya Kikwete Cardiac Institute, Dar es Salaam, Tanzania
| | - Richard Kisenge
- Department of Electrophysiology and Pacing, Jakaya Kikwete Cardiac Institute, Dar es Salaam, Tanzania
| |
Collapse
|
12
|
Wang F, Li S, Liang J, Wang Y, Song H, Yang J, Zou X, Li C. Removal and reuse of heavy metal ions on mildly oxidized Ti 3C 2 @BF membrane via synergistic photocatalytic-photothermal approach. J Hazard Mater 2023; 458:131954. [PMID: 37392643 DOI: 10.1016/j.jhazmat.2023.131954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 06/14/2023] [Accepted: 06/26/2023] [Indexed: 07/03/2023]
Abstract
The pollution of heavy metal ions in water seriously affects the ecosystem and human health. Here, an efficient synergetic photocatalytic-photothermal system is designed by combining a mildly oxidized Ti3C2 (mo-Ti3C2) with a super hydrophilic bamboo fiber (BF) membrane. The mo-Ti3C2 heterojunction promotes the transfer and separation of photoinduced charges and thus enhances the photocatalytic reduction of heavy metal ions (Co2+, Pb2+, Zn2+, Mn2+ and Cu2+). The photoreduced metal nanoparticles with high conductivity and LSPR effect further accelerate the transfer and separation of photoinduced charges, and improve photothermal and evaporative performance. The mo-Ti3C2-2.4 @BF membrane in Co(NO3)2 solution can achieve an excellent evaporation rate of 4.6 kg·m-2·h-1 and a high solar-vapor efficiency of up to 97.5% under the light intensity of 2.44 kW·m-2, which are 27.8% and 19.6% higher than those in H2O, respectively, demonstrating the reuse of photoreduced Co nanoparticles. No heavy metal ions are detected in any of the condensed water, and the Co2+ removal rate in the concentrated Co(NO3)2 solution is up to 80.4%. The synergetic photocatalytic-photothermal approach on the mo-Ti3C2 @BF membrane provides a new scope for the continuous removal and reuse of heavy metal ions, as well as for obtaining clean water.
Collapse
Affiliation(s)
- Fangxian Wang
- Research Center for Eco-Environmental Engineering, Dongguan University of Technology, Dongguan 523808, China
| | - Shihao Li
- Research Center for Eco-Environmental Engineering, Dongguan University of Technology, Dongguan 523808, China
| | - Junwen Liang
- Research Center for Eco-Environmental Engineering, Dongguan University of Technology, Dongguan 523808, China
| | - Yuwei Wang
- Research Center for Eco-Environmental Engineering, Dongguan University of Technology, Dongguan 523808, China
| | - Haoran Song
- Research Center for Eco-Environmental Engineering, Dongguan University of Technology, Dongguan 523808, China
| | - Junwei Yang
- Research Center for Eco-Environmental Engineering, Dongguan University of Technology, Dongguan 523808, China
| | - Xuelin Zou
- School of Chemical Engineering and Energy Technology, Dongguan University of Technology, Dongguan 523808, China
| | - Changping Li
- Research Center for Eco-Environmental Engineering, Dongguan University of Technology, Dongguan 523808, China.
| |
Collapse
|
13
|
Pouyamanesh S, Kowsari E, Ramakrishna S, Chinnappan A. A review of various strategies in e-waste management in line with circular economics. Environ Sci Pollut Res Int 2023; 30:93462-93490. [PMID: 37572248 DOI: 10.1007/s11356-023-29224-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2022] [Accepted: 08/04/2023] [Indexed: 08/14/2023]
Abstract
Waste management of electrical and electronic equipment has become a key challenge for electronics manufacturers due to globalization and the rapid expansion of information technology. As the volume of e-waste grows, legal departments lack the infrastructure, technology, and ability to collect and manage it environmentally soundly. Government laws, economic reasons, and social issues are important considerations in e-waste management. The circular economy concept is built on reusing and recycling goods and resources. A novel idea called the circular economy might prevent the negative consequences brought on by the exploitation and processing of natural resources while also having good effects such as lowering the demand for raw materials, cutting down on the use of fundamental resources, and creating jobs. To demonstrate the significance of policy implementation, the necessity for technology, and the need for societal awareness to build a sustainable and circular economy, the study intends to showcase international best practices in e-waste management. This study uses circular economy participatory implementation methods to provide a variety of possible approaches to assist decision-makers in e-waste management. The purpose of this article is to review the most accepted methods for e-waste management to emphasize the importance of implementing policies, technology requirements, and social awareness in creating a circular economy. To conclude, this paper highlights the necessity of a common legal framework, reform of the informal sector, the responsibility of different stakeholders, and entrepreneurial perspectives.
Collapse
Affiliation(s)
- Soudabeh Pouyamanesh
- Department of Chemistry, Amirkabir University of Technology, No. 424, Hafez Avenue, Tehran, 1591634311, Iran
| | - Elaheh Kowsari
- Department of Chemistry, Amirkabir University of Technology, No. 424, Hafez Avenue, Tehran, 1591634311, Iran.
| | - Seeram Ramakrishna
- Department of Mechanical Engineering, Center for Nanofibers and Nanotechnology, National University of Singapore, Singapore, 119260, Singapore
| | - Amutha Chinnappan
- Department of Mechanical Engineering, Center for Nanofibers and Nanotechnology, National University of Singapore, Singapore, 119260, Singapore
| |
Collapse
|
14
|
Mandjewil A, Ngueagni PT, Siewe JM, Fadimatou NM, Vieillard J, Dotto GL, Fotsing PN, Woumfo ED. Correlation between cocoa shell modifications by CTAB and its dye adsorption properties. Environ Sci Pollut Res Int 2023; 30:94474-94484. [PMID: 37535279 DOI: 10.1007/s11356-023-28671-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Accepted: 07/03/2023] [Indexed: 08/04/2023]
Abstract
Cocoa shell was modified whit sodium hydroxide (NaOH) and cationic surfactant cetyltrimethylammonium bromide (CTAB) to increase surface functionality, surface area, and positive charge density. The prepared adsorbent CC-OH-CTAB was used to remove indigo carmine (IC) and bromocresol green (BCG) dyes from water. The optimal pH for IC and BCG adsorption were 2 and 4, respectively. The equilibrium was attained after a contact time of 30 min for IC and 120 min for BCG. The maximum adsorption capacity (Qmax) of IC and BCG obtained was 85.1 mg g-1 and 192.7 mg g-1, respectively. The Liu isotherm model best described the equilibrium results. The adsorption kinetics model showed that IC and BCG adsorption onto CC-OH-CTAB followed the pseudo-first-order and pseudo-second-order model, respectively. The regeneration and reusability experiments indicated that CC-OH-CTAB had much stability and excellent performance meanwhile repeatedly used. Finally, the insertion of CTAB on the CC-OH surface proved to be an excellent way to improve the adsorption performance of this material concerning dyes.
Collapse
Affiliation(s)
- Albert Mandjewil
- Department of Inorganic Chemistry, Faculty of Science, University of Yaounde I, 812, Yaounde, Cameroon
| | - Patrick Tsopbou Ngueagni
- Department of Inorganic Chemistry, Faculty of Science, University of Yaounde I, 812, Yaounde, Cameroon
| | - Jean Mermoz Siewe
- Department of Inorganic Chemistry, Faculty of Science, University of Yaounde I, 812, Yaounde, Cameroon
| | | | - Julien Vieillard
- Université de Rouen Normandie, 55, rue Saint Germain, 27000, Rouen, Evreux, France
| | - Guilherme Luiz Dotto
- Université de Rouen Normandie, 55, rue Saint Germain, 27000, Rouen, Evreux, France
- Research Group on Adsorptive and Catalytic Process Engineering (ENGEPAC), Federal University of Santa Maria, Av. Roraima, 97105-900, Santa Maria, RS, 1000-7, Brazil
| | - Patrick Nkuigue Fotsing
- Department of Inorganic Chemistry, Faculty of Science, University of Yaounde I, 812, Yaounde, Cameroon
- Université de Rouen Normandie, 55, rue Saint Germain, 27000, Rouen, Evreux, France
| | - Emmanuel Djoufac Woumfo
- Department of Inorganic Chemistry, Faculty of Science, University of Yaounde I, 812, Yaounde, Cameroon.
| |
Collapse
|
15
|
Zhang Y, Gu L, Zhang Y, Yang J, Li Q, Yu S, Li C, Wei K. Energy-efficient reuse of bio-treated textile wastewater by a porous-structure electrochemical PbO2 filter: Performance and mechanism. Environ Res 2023; 231:116254. [PMID: 37245572 DOI: 10.1016/j.envres.2023.116254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2023] [Revised: 05/12/2023] [Accepted: 05/26/2023] [Indexed: 05/30/2023]
Abstract
In this work, a novel porous-structure electrochemical PbO2 filter (PEF-PbO2) was developed to achieve the reuse of bio-treated textile wastewater. The characterization of PEF-PbO2 confirmed that its coating has a variable pore size that increases with depth from the substrate, and the pores with a size of 5 μm account for the largest proportion. The study on the role of this unique structure illustrated that PEF-PbO2 possesses a larger electroactive area (4.09 times) than the conventional electrochemical PbO2 filter (EF-PbO2) and enhanced mass transfer (1.39 times) in flow mode. The investigation of operating parameters with a special discussion of electric energy consumption suggested that the optimal conditions were a current density of 3 mA cm-2, Na2SO4 concentration of 10 g L-1 and pH value of 3, which resulted in 99.07% and 53.3% removal of Rhodamine B and TOC, respectively, together with an MCETOC of 24.6%. A stable removal of 65.9% COD and 99.5% Rhodamine B with a low electric energy consumption of 5.19 kWh kg-1 COD under long-term reuse of bio-treated textile wastewater indicated that PEF-PbO2 was durable and energy-efficient in practical applications. Mechanism study by simulation calculation illustrated that the part of the pore of the PEF-PbO2's coating with small size (5 μm) plays an important role in this excellent performance which provides the advantage of rich ·OH concentration, short pollutant diffusion distance and high contact possibility.
Collapse
Affiliation(s)
- Yonghao Zhang
- School of Environmental Science and Engineering, Yancheng Institute of Technology, Yancheng, 224051, China; Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China.
| | - Liankai Gu
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Ying Zhang
- School of Environmental Science and Engineering, Yancheng Institute of Technology, Yancheng, 224051, China
| | - Jing Yang
- School of Environmental Science and Engineering, Yancheng Institute of Technology, Yancheng, 224051, China
| | - Qian Li
- School of Environmental Science and Engineering, Yancheng Institute of Technology, Yancheng, 224051, China
| | - Shuyan Yu
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing, 100083, China
| | - Congju Li
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing, 100083, China
| | - Kajia Wei
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China.
| |
Collapse
|
16
|
Spreadbury CJ, Weiksnar KD, Laux S, Townsend TG. Distributions of trace elements within MSWI bottom and combined ash components: Implications for reuse practices. Chemosphere 2023; 336:139198. [PMID: 37315860 DOI: 10.1016/j.chemosphere.2023.139198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 05/15/2023] [Accepted: 06/11/2023] [Indexed: 06/16/2023]
Abstract
Concentrations of 25 inorganic elements were measured in both bulk ash and individual ash components from residuals at three municipal solid waste incineration (MSWI) facilities in the US (two combined ash (CA) and one bottom ash (BA)). Concentrations were assessed based on particle size and component to understand the contribution from each fraction. The results found that among facilities, the finer size fractions contained elevated concentrations of trace elements of concern (As, Pb, Sb) when compared to the coarse fraction, but concentrations varied among facilities depending on the type of ash and differences in advanced metals recovery processes. This study focused on several constituents of potential concern, As, Ba, Cu, Pb, and Sb, and found that the main components of MSWI ash (glass, ceramic, concrete, and slag) are sources of these elements in the ash streams. For many elements, concentrations were significantly higher in CA bulk and component fractions opposed to BA streams. An acid treatment procedure and scanning electron microscopy/energy-dispersive x-ray spectroscopy analysis revealed that some elements, such as As in concrete, are result of the inherent properties of the component, but other elements, such as Sb, form on the surface during or after incineration and can be removed. Some Pb and Cu concentrations were attributed to inclusions in the glass or slag introduced into the material during the incineration process. Understanding the contributions of each ash component provides critical information for developing strategies to reduce trace element concentrations in ash streams to promote reuse opportunities.
Collapse
Affiliation(s)
- Chad J Spreadbury
- Department of Environmental Engineering Sciences, University of Florida, P. O. Box 116450, Gainesville, FL, 32611-6450, USA
| | - Kate D Weiksnar
- Department of Environmental Engineering Sciences, University of Florida, P. O. Box 116450, Gainesville, FL, 32611-6450, USA
| | - Steve Laux
- Department of Environmental Engineering Sciences, University of Florida, P. O. Box 116450, Gainesville, FL, 32611-6450, USA
| | - Timothy G Townsend
- Department of Environmental Engineering Sciences, University of Florida, P. O. Box 116450, Gainesville, FL, 32611-6450, USA.
| |
Collapse
|
17
|
Madeira L, Ribau Teixeira M, Almeida A, Santos T, Carvalho F. Reuse of lime sludge from immediate one-step lime precipitation process as a coagulant (aid) in slaughterhouse wastewater treatment. J Environ Manage 2023; 342:118278. [PMID: 37269729 DOI: 10.1016/j.jenvman.2023.118278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 03/09/2023] [Accepted: 05/25/2023] [Indexed: 06/05/2023]
Abstract
The circularity of wastewater treatment subproducts is on the worldwide agenda. In this way, this work aims to evaluate alternatives for the reuse of sludge from slaughterhouse wastewater treatment. Wetted sludges produced in the immediate one-step lime precipitation process were applied directly or first calcined, as a coagulant or coagulant aid, in the absence or presence of Ca(OH)2, to slaughterhouse wastewaters with different characteristics. For the best sludge reuse, successive reuses of the sludge were carried out and the characteristics of treated slaughterhouse wastewater were evaluated after each reuse. Results showed a great similarity between slaughterhouse and treated slaughterhouse wastewaters using wetted and calcined sludges as a coagulant for highly contaminated slaughterhouse wastewater. In addition, a great similarity was also observed between the calcined and the wetted sludges, both as a coagulant aid, for all the slaughterhouse wastewaters tested. However, the latter consumed more hydrated lime, more volume of sludge sedimented, and higher concentrations phosphorus and organic matter in the treated wastewater. Calcined sludge as a coagulant aid guaranteed the best slaughterhouse wastewater quality for almost of the tested paramenters (≥94% for absorbances at 254 nm and 410 nm, E. coli, turbidity, and phosphorus, chemical oxygen demand between 3 and 91%, and total Kjeldahl nitrogen between 3 and 62%) independently of the wastewater characteristics. Calcined sludge as a coagulant aid can be three times reused for the tested parameters and slaughterhouse wastewater characteristics without significantly decreasing the quality. The successive sludge reused saves the hydrated lime dose applied (up to 28.4%) and the sedimented sludge volume (up to 24.7%), and can be a solution to stabilize sludge due to the pH increase (sludge pH = 12).
Collapse
Affiliation(s)
- Luís Madeira
- Faculdade de Ciências e Tecnologia, Universidade Do Algarve, Edifício 7, Campus de Gambelas, 8005-139, Faro, Portugal; Departamento de Tecnologias e Ciências Aplicadas, Instituto Politécnico de Beja (IPBeja), Ap 158, 7801-902, Beja, Portugal; CENSE, Center for Environmental and Sustainability Research, & Change, Global Change and Sustainability Institute, Portugal
| | - Margarida Ribau Teixeira
- Faculdade de Ciências e Tecnologia, Universidade Do Algarve, Edifício 7, Campus de Gambelas, 8005-139, Faro, Portugal; CENSE, Center for Environmental and Sustainability Research, & Change, Global Change and Sustainability Institute, Portugal.
| | - Adelaide Almeida
- Departamento de Tecnologias e Ciências Aplicadas, Instituto Politécnico de Beja (IPBeja), Ap 158, 7801-902, Beja, Portugal; FiberEnTech, Fiber Materials and Environmental Technologies, Rua Marquês D'Ávila e Bolama, 6201-001, Covilhã, Portugal
| | - Teresa Santos
- Departamento de Tecnologias e Ciências Aplicadas, Instituto Politécnico de Beja (IPBeja), Ap 158, 7801-902, Beja, Portugal
| | - Fátima Carvalho
- Departamento de Tecnologias e Ciências Aplicadas, Instituto Politécnico de Beja (IPBeja), Ap 158, 7801-902, Beja, Portugal; FiberEnTech, Fiber Materials and Environmental Technologies, Rua Marquês D'Ávila e Bolama, 6201-001, Covilhã, Portugal
| |
Collapse
|
18
|
Saeed T, Al-Muyeed A, Yadav AK, Miah MJ, Hasan MR, Zaman T, Hasan M, Ahmed T. Influence of aeration, plants, electrodes, and pollutant loads on treatment performance of constructed wetlands: A comprehensive study with septage. Sci Total Environ 2023:164558. [PMID: 37270017 DOI: 10.1016/j.scitotenv.2023.164558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 05/03/2023] [Accepted: 05/28/2023] [Indexed: 06/05/2023]
Abstract
This study reports the performance of non-aerated and aerated unplanted, planted, microbial fuel cell planted wetlands for stabilizing septage and treating the drained wastewater. The wetland systems of this study were dosed with septage for a relatively shorter period, i.e., 20 weeks, followed by 60 days of sludge drying period. The sludge loading rates across the constructed wetlands ranged between 259 and 624 kg total solids (TS)/m2 per year. Organic matter, nitrogen, and phosphorus concentration of the residual sludge ranged between 8512 and 66,374 mg/kg, 12,950 and 14,050 mg/kg, 4979 and 9129 mg/kg, respectively. The presence of plants, electrode, and aeration improved sludge dewatering and decreased the organic matter and nutrient concentration of the residual sludge. The heavy metals (Cd, Cr, Cu, Fe, Pb, Mn, Ni, and Zn) concentration of the residual sludge fulfilled the guidelines for agricultural reuse in Bangladesh. Chemical oxygen demand (COD), ammoniacal nitrogen (NH4-N), total nitrogen (TN), total phosphorus (TP), and coliform removal percentages from the drained wastewater ranged between 91 and 93 %, 88 and 98 %, 90 and 99 %, 92 and 100 %, and 75 and 90 %, respectively. NH4-N removal from the drained wastewater depended upon aeration. The sludge treatment wetlands achieved metals removal percentages (from the drained wastewater) ranging between 90 and 99 %. Physicochemical and microbial routes in accumulated sludge, rhizosphere, and media contributed to pollutants removal. Input load and organic removal increment (from the drained wastewater) were positively correlated; nutrient removal showed a contradictory trend. The non-aerated and aerated microbial fuel cell planted wetlands produced maximum power densities ranging between 66 and 3417 mW/m3. Because of the shorter experimental duration, this study revealed preliminary but new information on the macro and micro pollutants removal pathways in septage sludge wetlands (with and without electrode) that could be utilized to design pilot or full-scale systems.
Collapse
Affiliation(s)
- Tanveer Saeed
- Department of Civil Engineering, University of Asia Pacific, Dhaka 1205, Bangladesh.
| | - Abdullah Al-Muyeed
- CWIS-FSM Support Cell, Department of Public Health Engineering, Government of the People's Republic of Bangladesh, Dhaka 1000, Bangladesh
| | - Asheesh Kumar Yadav
- Department of Chemical and Environmental Technology, Rey Juan Carlos University, Mostoles 28933, Madrid, Spain
| | - Md Jihad Miah
- Department of Civil Engineering, University of Asia Pacific, Dhaka 1205, Bangladesh
| | - Md Rashedul Hasan
- Department of Civil Engineering, University of Asia Pacific, Dhaka 1205, Bangladesh
| | - Takrim Zaman
- Department of Civil Engineering, University of Asia Pacific, Dhaka 1205, Bangladesh
| | - Mehedi Hasan
- ITN-BUET Centre for Water Supply and Waste Management, Bangladesh University of Engineering and Technology, Dhaka 1000, Bangladesh
| | - Tanvir Ahmed
- ITN-BUET Centre for Water Supply and Waste Management, Bangladesh University of Engineering and Technology, Dhaka 1000, Bangladesh
| |
Collapse
|
19
|
Chen Z, Qiu X, Ke J, Wen J, Wu C, Yu Q. Direct degradation of Bisphenol A from aqueous solution by active red mud in aerobic environment. Environ Sci Pollut Res Int 2023:10.1007/s11356-023-27791-8. [PMID: 37249770 DOI: 10.1007/s11356-023-27791-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Accepted: 05/16/2023] [Indexed: 05/31/2023]
Abstract
As industrial waste from aluminum production, red mud (RM) poses a severe threat to the local environment that needs to be appropriately utilized. The activation of iron oxide, which is abundant in RM, improves its effectiveness as a catalytic material for the degradation of organic pollutants. This study developed a novel activation approach by adding dithionite citrate bicarbonate (DCB) for Bisphenol A (BPA) degradation under aeration conditions. Electrochemical experiments and reactive oxygen species (ROSs) trapping experiments showed that DCB treatment enhanced the redox cycle of Fe(II)/Fe(III), which promoted free radical generation. The optimized condition for the RM activation was achieved at 21 mmol/L dithionites, 84 mmol/L citrates, and 34 mmol/L bicarbonate, and the degradation of BPA by activated RM reached 410 µg BPA per gram of RM. This work provided a feasible way to utilize RM resources as an efficient, low-cost catalyst for organic pollutants treatment.
Collapse
Affiliation(s)
- Zhicheng Chen
- State Key Laboratory of Biogeology and Environmental Geology, Hubei Key Laboratory of Critical Zone Evolution, School of Earth Science, China University of Geosciences, Wuhan, 430074, China
| | - Xinhong Qiu
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, 430205, China
| | - Jun Ke
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, 430205, China
| | - Junwei Wen
- State Key Laboratory of Biogeology and Environmental Geology, Hubei Key Laboratory of Critical Zone Evolution, School of Earth Science, China University of Geosciences, Wuhan, 430074, China
| | - Chen Wu
- State Key Laboratory of Biogeology and Environmental Geology, Hubei Key Laboratory of Critical Zone Evolution, School of Earth Science, China University of Geosciences, Wuhan, 430074, China
| | - Qianqian Yu
- State Key Laboratory of Biogeology and Environmental Geology, Hubei Key Laboratory of Critical Zone Evolution, School of Earth Science, China University of Geosciences, Wuhan, 430074, China.
| |
Collapse
|
20
|
Filho EJS, Barros KK, Neto EB, Gavazza S, Florencio L, Kato MT. Effect of reclaimed water and dehydrated sludge on the morpho-physiology and yield of sorghum. Environ Technol 2023:1-26. [PMID: 37231744 DOI: 10.1080/09593330.2023.2219011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Reclaimed water (RW) and dehydrated sludge (DS) have been used to improve plant nutrition. In this work, the effect on the morpho-physiological parameters and yield of sorghum cultivated with RW and DS was evaluated. The experiment was carried out in a greenhouse; RW and DS were obtained in a sewage treatment plant. The dewatering of the sludge occurred in drying beds. Six treatments (T), with five repetitions each, were carried out in entirely randomized blocks. Water (W) was used in T1 (W) (control), T2 (W+NPK), and T3 (W+DS); RW was used in T4 (RW), T5 (RW+P), and T6 (RW+DS). The results showed that irrigation with only RW (T4), or DS+W (T3) was very suitable for the cultivation since an adequate nutritional supply was provided. The positive effects were verified based on the morpho-physiological parameters (T3 - 148.8 cm of plant height, 1.50 cm of stem diameter, and 103 cm of stem length. T4 - 154 cm of plant height, 1.70 cm of stem diameter, and 107 cm of stem length), and grain production (T3 - the weight of 1000 seeds equal to 6.97 g and productivity of 1453 grains per plant. T4 - weight of 1000 seeds equal to 6.81 g and productivity of 1636 grains per plant). Both treatments showed for most of the parameters, no significant differences compared with those of T2 or T5 with supplementary fertilizers. T4 or T3 also showed a high production of metabolites like free amino acids (T3 - 6.45 mg g-1; T4 - 8.43 mg g-1) and proline (T3 - 1.86 mg g-1; T4 - 1.77 mg g-1), known to be a good indication of a natural defence that is used by plants against stress conditions, and soluble protein (T3 - 11.20 mg g-1; T4 - 13.51 mg g-1). Therefore, since the production of such grains in semiarid regions with RW or DS can be environmentally and economically beneficial, their use is recommended for small and medium farming operations in arid and semiarid regions.
Collapse
Affiliation(s)
- Edecio José Souza Filho
- Federal University of Pernambuco, Department of Civil and Environmental Engineering, Laboratory of Environmental Sanitation (LSA-UFPE), Recife, Brazil
| | - Kenia Kelly Barros
- Federal University of Pernambuco (UFPE), Agreste Academic Centre (CAA), Technology Center, Laboratory of Environmental Engineering (LEA-UFPE), Caruaru, Brazil
| | - Egidio Bezerra Neto
- Rural Federal University of Pernambuco (UFRPE), Department of Chemistry, Recife, Brazil
| | - Savia Gavazza
- Federal University of Pernambuco, Department of Civil and Environmental Engineering, Laboratory of Environmental Sanitation (LSA-UFPE), Recife, Brazil
| | - Lourdinha Florencio
- Federal University of Pernambuco, Department of Civil and Environmental Engineering, Laboratory of Environmental Sanitation (LSA-UFPE), Recife, Brazil
| | - Mario Takayuki Kato
- Federal University of Pernambuco, Department of Civil and Environmental Engineering, Laboratory of Environmental Sanitation (LSA-UFPE), Recife, Brazil
| |
Collapse
|
21
|
Mackey E, Hofmann R, Festger A, Vanyo C, Moore N, Chen T, Wang C, Taylor-Edmonds L, Andrews S. UV-chlorine advanced oxidation for potable water reuse: A review of the current state of the art and research needs. Water Res X 2023; 19:100183. [PMID: 37292177 PMCID: PMC10245334 DOI: 10.1016/j.wroa.2023.100183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 05/22/2023] [Accepted: 05/23/2023] [Indexed: 06/10/2023]
Abstract
This paper reports conclusions from a recent study completed for the Water Research Foundation and the State of California to offer guidance on UV-chlorine advanced oxidation for potable water reuse. The fundamentals of UV-chlorine advanced oxidation are discussed, and lessons learned from some of the early adopters of this technology are presented. Important highlights include the significant impact of ammonia and chloramines on UV-chlorine treatment, challenges associated with predicting UV-chlorine performance due to complex photochemistry, and an ongoing need to monitor potential byproducts and transformation products when employing any form of advanced oxidation for potable reuse.
Collapse
Affiliation(s)
- E. Mackey
- Brown and Caldwell, 201N Civic Dr. #300, Walnut Creek, CA 94596, USA
| | - R. Hofmann
- University of Toronto, 35St. George Street, Ontario M5S 1A4, Canada
| | - A. Festger
- Brown and Caldwell, 2N. Central Ave, Phoenix, AZ 85004, USA
| | - C. Vanyo
- Hazen & Sawyer, 1400 E Southern Ave Suite 340, Tempe, AZ 85282, USA
| | - N. Moore
- Department of Civil and Mineral Engineering, University of Toronto, 35St. George Street, Toronto, Ontario M5S 1A4, Canada
| | - T. Chen
- University of Toronto, 35St. George Street, Ontario M5S 1A4, Canada
| | - C. Wang
- Department of Civil Engineering, University of Manitoba, 15 Gillson Street, Winnipeg, Manitoba R3T 5V6, Canada
| | | | - S.A. Andrews
- University of Toronto, 35St. George Street, Ontario M5S 1A4, Canada
| |
Collapse
|
22
|
Favaretto DPC, Rempel A, Lanzini JR, Silva ACM, Lazzari T, Barbizan LD, Brião VB, Colla LM, Treichel H. Fruit residues as biomass for bioethanol production using enzymatic hydrolysis as pretreatment. World J Microbiol Biotechnol 2023; 39:144. [PMID: 37004675 DOI: 10.1007/s11274-023-03588-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Accepted: 03/19/2023] [Indexed: 04/04/2023]
Abstract
The commercialization of fruits in markets generates a large amount of waste because they are perishable and have a short shelf life, so, they are discarded. This study aimed to provide a noble end to discarded fruits that have fermentable sugars. Banana, apple, mango and papaya residues were collected from supermarkets and underwent an enzymatic hydrolysis process. The ability of four pectinases, two amylases, one xylanase and one cellulase to release reducing sugars from fruit biomass before fermentation with two yeast strains (S. cerevisiae CAT-1 and S. cerevisiae Angel) for bioethanol production was investigated, obtaining a total of RS (Reducing sugar) of 268.08 mg/mL in banana residues. A fermentation with yeast S. cerevisiae CAT-1 resulted in 98% consumption of RS and the production of a total of 28.02 g/L of ethanol. Furthermore, fermentation with the yeast S. cerevisiae Angel, resulted in 97% RS consumption and 31.87 g/L ethanol production, which was the best result obtained throughout all the tests of hydrolysis, highlighting the banana residue as a promising biomass for the production of bioethanol.
Collapse
Affiliation(s)
- Danúbia Paula Cadore Favaretto
- University of Passo Fundo, Campus I, km 171, BR 285, P. O. Box 611, Passo Fundo City, Rio Grande do Sul State, 99001-970, Brazil.
| | - Alan Rempel
- University of Passo Fundo, Campus I, km 171, BR 285, P. O. Box 611, Passo Fundo City, Rio Grande do Sul State, 99001-970, Brazil
| | - Julia Roberta Lanzini
- University of Passo Fundo, Campus I, km 171, BR 285, P. O. Box 611, Passo Fundo City, Rio Grande do Sul State, 99001-970, Brazil
| | - Ana Carolina Mattana Silva
- University of Passo Fundo, Campus I, km 171, BR 285, P. O. Box 611, Passo Fundo City, Rio Grande do Sul State, 99001-970, Brazil
| | - Tauane Lazzari
- University of Passo Fundo, Campus I, km 171, BR 285, P. O. Box 611, Passo Fundo City, Rio Grande do Sul State, 99001-970, Brazil
| | - Luiza Desengrini Barbizan
- University of Passo Fundo, Campus I, km 171, BR 285, P. O. Box 611, Passo Fundo City, Rio Grande do Sul State, 99001-970, Brazil
| | - Vandré Barbosa Brião
- University of Passo Fundo, Campus I, km 171, BR 285, P. O. Box 611, Passo Fundo City, Rio Grande do Sul State, 99001-970, Brazil
| | - Luciane Maria Colla
- University of Passo Fundo, Campus I, km 171, BR 285, P. O. Box 611, Passo Fundo City, Rio Grande do Sul State, 99001-970, Brazil
| | - Helen Treichel
- Federal University of the South Border - Campus Erechim, RS 135, Km 72, Erechim City, Rio Grande do Sul State, 99700-000, Brazil
| |
Collapse
|
23
|
Ozelcaglayan ED, Parker WJ. β-Cyclodextrin functionalized adsorbents for removal of organic micropollutants from water. Chemosphere 2023; 320:137964. [PMID: 36736473 DOI: 10.1016/j.chemosphere.2023.137964] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Revised: 12/16/2022] [Accepted: 01/23/2023] [Indexed: 06/18/2023]
Abstract
The presence of organic micropollutants in water is an ongoing concern due to the potential risks to living organisms. β-Cyclodextrin-based adsorbents have been developed to remove organic micropollutants from water as they are deemed to be efficient, selective and reusable. This literature review establishes the current state of the knowledge on the application of β-Cyclodextrin adsorbents for the removal of organic micropollutants from water and determines knowledge gaps and recommendations for future studies. An inventory of organic micropollutants that have been studied was developed and it revealed that bisphenol-A has been the most commonly studied. Adsorbent configurations were reviewed and modifications to the adsorbent structures that have provided enhanced adsorption properties were identified. The size and shape of the organic micropollutants was found to affect the adsorption behavior. The surface charge of β-Cyclodextrin adsorbents influence adsorption when repulsive forces are present and the extent of repulsion can depend on the pH of the solution. Common competitors such as natural organic matter and inorganic ions do not significantly impact the adsorption of organic micropollutants however relatively small fulvic acids may compete for the β-Cyclodextrin cavity depending on the adsorbent type. Desorption of organic micropollutants from these adsorbents has been accomplished with alcohols and most adsorbents have been recovered and reused in adsorption/desorption cycles. The need for enhanced recovery processes that maintain water quality and adsorbent integrity was identified. The use of quantitative structure-activity relationships and molecular computational tools could potentially guide future environmental applications of β-Cyclodextrin adsorbents.
Collapse
Affiliation(s)
- Ezgi Demircan Ozelcaglayan
- Department of Civil and Environmental Engineering, University of Waterloo, 200 University Avenue West, Waterloo, N2L 3G1, Ontario, Canada.
| | - Wayne J Parker
- Department of Civil and Environmental Engineering, University of Waterloo, 200 University Avenue West, Waterloo, N2L 3G1, Ontario, Canada
| |
Collapse
|
24
|
Wang Q, Zhao Z, Zhao Y, Geng Z, Hu X, Cheng W, Dong Y. Performance optimization and mechanism analysis of applied Enteromorpha-based composite dust suppressant. Environ Geochem Health 2023:10.1007/s10653-023-01544-5. [PMID: 36988854 DOI: 10.1007/s10653-023-01544-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/01/2023] [Accepted: 03/14/2023] [Indexed: 06/19/2023]
Abstract
In order to solve the problem of environmental pollution caused by the escape of coal dust in open-pit coal mines, a composite dust suppressant was prepared from Enteromorpha, and the preparation factors (water-soluble polymer, temperature, solid content and surfactant) were optimized. The mechanism of dust suppression and the possibility of large-scale field application were discussed. The research results on the related properties of dust suppressants showed that the performance of Enteromorpha-based dust suppressants prepared by this method was excellent compared with similar studies. Among them, polyacrylamide (PAM) Enteromorpha-based dust suppressant had the best performance, with viscosity of 25.1 mPa s and surface tension of 27.05 mN/m. Moreover, PAM Enteromorpha-based dust suppressant had the best effect, with the mass loss of 2.94% under the wind speed of 10 m/s and the coal dust loss rate of 4.6% after rain erosion, and it had strong water retention performance. Through the discussion of dust suppression mechanism, it was found that the mechanical entangled network structure with hydrogen bonds as nodes was formed after the graft copolymerization of PAM and Enteromorpha. It had high permeability and good adhesion. After quickly wetting coal dust, it formed a dense package for coal dust. The field experiment also showed that the use of Enteromorpha-based dust suppressant can effectively inhibit the escape of coal dust. From the point of view of economy and efficiency, Enteromorpha can save 30% of the material cost and the dust suppression efficiency can reach 89-94%. Therefore, the Enteromorpha-based dust suppressant may stably suppress coal dust on the basis of reducing the cost.
Collapse
Affiliation(s)
- Qingshan Wang
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, 266590, Shandong, China
- Key Laboratory of Mining Disaster Prevention and Control, Shandong University of Science and Technology, Qingdao, 266590, Shandong, China
| | - Zhendong Zhao
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, 266590, Shandong, China
- Key Laboratory of Mining Disaster Prevention and Control, Shandong University of Science and Technology, Qingdao, 266590, Shandong, China
| | - Yanyun Zhao
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, 266590, Shandong, China.
- Key Laboratory of Mining Disaster Prevention and Control, Shandong University of Science and Technology, Qingdao, 266590, Shandong, China.
- Institute of Yellow River Delta Earth Surface Processes and Ecological Integrity, Shandong University of Science and Technology, Qingdao, 266590, Shandong, China.
| | - Zhi Geng
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, 266590, Shandong, China
- Key Laboratory of Mining Disaster Prevention and Control, Shandong University of Science and Technology, Qingdao, 266590, Shandong, China
| | - Xiangming Hu
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, 266590, Shandong, China
- Key Laboratory of Mining Disaster Prevention and Control, Shandong University of Science and Technology, Qingdao, 266590, Shandong, China
| | - Weimin Cheng
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, 266590, Shandong, China
- Key Laboratory of Mining Disaster Prevention and Control, Shandong University of Science and Technology, Qingdao, 266590, Shandong, China
| | - Yue Dong
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, 266590, Shandong, China
- Key Laboratory of Mining Disaster Prevention and Control, Shandong University of Science and Technology, Qingdao, 266590, Shandong, China
| |
Collapse
|
25
|
Pandey P, Dhiman M, Kansal A, Subudhi SP. Plastic waste management for sustainable environment: techniques and approaches. Waste Dispos Sustain Energy 2023; 5:1-18. [PMID: 37359812 PMCID: PMC9987405 DOI: 10.1007/s42768-023-00134-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 12/28/2022] [Accepted: 01/05/2023] [Indexed: 03/08/2023]
Abstract
Excessive exploitation, negligence, non-degradable nature, and physical and chemical properties of plastic waste have resulted in a massive pollution load into the environment. Consequently, plastic entres the food chain and can cause serious health issues in aquatic animals and humans. The present review summarizes currently reported techniques and approaches for the removal of plastic waste. Many techniques, such as adsorption, coagulation, photocatalysis, and microbial degradation, and approaches like reduction, reuse and recycling are potentially in trend and differ from each other in their efficiency and interaction mechanism. Moreover, substantial advantages and challenges associated with these techniques and approaches are highlighted to develop an understanding of the selection of possible ways for a sustainable future. Nevertheless, in addition to the reduction of plastic waste from the ecosystem, many alternative opportunities have also been explored to cash plastic waste. These fields include the synthesis of adsorbents for the removal of pollutants from aqueous and gaseous stream, their utility in clothing, waste to energy and fuel and in construction (road making). Substantial evidence can be observed in the reduction of plastic pollution from various ecosystems. In addition, it is important to develop an understanding of factors that need to be emphasized while considering alternative approaches and opportunities to cash plastic waste (like adsorbent, clothing, waste to energy and fuel). The thrust of this review is to provide readers with a comprehensive overview of the development status of techniques and approaches to overcome the global issue of plastic pollution and the outlook on the exploitation of this waste as resources.
Collapse
Affiliation(s)
- Prashant Pandey
- Uttarakhand Pollution Control Board, Gaura Devi Paryavaran Bhawan, IT Park, Sahastradhara Road, Dehradun, Uttarakhand 248001 India
| | - Manisha Dhiman
- School of Management, IMS Unison University, Makkawala Greens, Mussoorie Road, Dehradun, Uttarakhand 248001 India
| | - Ankur Kansal
- Uttarakhand Pollution Control Board, Gaura Devi Paryavaran Bhawan, IT Park, Sahastradhara Road, Dehradun, Uttarakhand 248001 India
| | - Sarada Prasannan Subudhi
- Uttarakhand Pollution Control Board, Gaura Devi Paryavaran Bhawan, IT Park, Sahastradhara Road, Dehradun, Uttarakhand 248001 India
| |
Collapse
|
26
|
Dornelas KC, Mascarenhas NMH, Dos Santos da Rocha PA, Ton APS, do Amaral AG, Schneider RM, Dos Santos Lima de Brito AN, Furtado DA, do Nascimento JWB. Chicken bed reuse. Environ Sci Pollut Res Int 2023; 30:39537-39545. [PMID: 36787074 DOI: 10.1007/s11356-023-25850-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Accepted: 02/06/2023] [Indexed: 06/18/2023]
Abstract
Aviculture is a developed and important industry worldwide. However, it is an industry that produces solid waste such as bedding. As an attempt to reduce environmental impact and productive activity costs, beds are reused by several consecutive lots which can increase microorganism concentration and lead to unsanitary conditions. In this regard, it is essential to adopt a litter pre-treatment during the gap sanitary period between lots to avoid passing problems to the birds from the current flock to the subsequent flock and to guarantee the litter quality. Several factors must be considered to guarantee that there is minimal damage to chicken production. Therefore, this literature review aims to approach the main factors that affect the thermal comfort and chicken litter quality, as well as alternatives used as an alternative biological treatment to guarantee its reuse quality.
Collapse
Affiliation(s)
- Karoline Carvalho Dornelas
- Postgraduate Program in Agricultural Engineering, Federal University of Campina Grande (UFCG), Road Aprígio Veloso, 882 - Universitário, Campina Grande, PB, 58429-900, Brazil
- Postgraduate Program in Environmental Sciences, Federal University of Mato Grosso (UFMT), Avenue Alexandre Ferronato, 1200 - Res. Cidade Jardim, Sinop, MT, 78550-728, Brazil
| | - Nágela Maria Henrique Mascarenhas
- Postgraduate Program in Agricultural Engineering, Federal University of Campina Grande (UFCG), Road Aprígio Veloso, 882 - Universitário, Campina Grande, PB, 58429-900, Brazil.
| | - Priscila Almeida Dos Santos da Rocha
- Postgraduate Program in Animal Science, Federal University of Mato Grosso (UFMT), Avenue Alexandre Ferronato, 1200 - Res. Cidade Jardim, Sinop, MT, 78550-728, Brazil
| | - Ana Paula Silva Ton
- Postgraduate Program in Animal Science, Federal University of Mato Grosso (UFMT), Avenue Alexandre Ferronato, 1200 - Res. Cidade Jardim, Sinop, MT, 78550-728, Brazil
| | - Adriana Garcia do Amaral
- Postgraduate Program in Environmental Sciences, Federal University of Mato Grosso (UFMT), Avenue Alexandre Ferronato, 1200 - Res. Cidade Jardim, Sinop, MT, 78550-728, Brazil
| | - Roselene Maria Schneider
- Postgraduate Program in Environmental Sciences, Federal University of Mato Grosso (UFMT), Avenue Alexandre Ferronato, 1200 - Res. Cidade Jardim, Sinop, MT, 78550-728, Brazil
| | - Alícia Nayana Dos Santos Lima de Brito
- Postgraduate Program in Agricultural Engineering, Federal University of Campina Grande (UFCG), Road Aprígio Veloso, 882 - Universitário, Campina Grande, PB, 58429-900, Brazil
| | - Dermeval Araújo Furtado
- Postgraduate Program in Agricultural Engineering, Federal University of Campina Grande (UFCG), Road Aprígio Veloso, 882 - Universitário, Campina Grande, PB, 58429-900, Brazil
| | - José Wallace Barbosa do Nascimento
- Postgraduate Program in Agricultural Engineering, Federal University of Campina Grande (UFCG), Road Aprígio Veloso, 882 - Universitário, Campina Grande, PB, 58429-900, Brazil
| |
Collapse
|
27
|
Sumner C, Ikuta I, Garg T, Martin JG, Mansoori B, Chalian M, Englander BS, Chertoff J, Woolen S, Caplin D, Sneider MB, Desouches SL, Chan TL, Kadom N. Approaches to Greening Radiology. Acad Radiol 2023; 30:528-535. [PMID: 36114076 DOI: 10.1016/j.acra.2022.08.013] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2022] [Revised: 07/31/2022] [Accepted: 08/09/2022] [Indexed: 01/25/2023]
Abstract
The health care sector is a resource-intensive industry, consuming significant amounts of water and energy, and producing a multitude of waste. Health care providers are increasingly implementing strategies to reduce energy use and waste. Little is currently known about existing sustainability strategies and how they may be supported by radiology practices. Here, we review concepts and ideas that minimize energy use and waste, and that can be supported or implemented by radiologists.
Collapse
Affiliation(s)
- Christina Sumner
- Department of Radiology and Imaging Sciences, Emory University School of Medicine, Atlanta, Georgia
| | - Ichiro Ikuta
- Department of Radiology & Biomedical Imaging, Yale Program for Innovation in Imaging Informatics, Department of Radiology, Yale University School of Medicine, New Haven, CT; Mayo Clinic Arizona, Phoenix, Arizona
| | - Tushar Garg
- Division of Vascular and Interventional Radiology, Russell H. Morgan Department of Radiology and Radiological Science, The Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Jonathan G Martin
- Department of Radiology, Duke University School of Medicine, Durham, North Carolina
| | - Bahar Mansoori
- Department of Radiology, University of Washington, Seattle, Washington
| | - Majid Chalian
- Department of Radiology, University of Washington, Seattle, Washington
| | - Brian S Englander
- Department of Radiology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Jocelyn Chertoff
- Department of Radiology, Dartmouth Health and the Geisel School of Medicine at Dartmouth, Lebanon, New Hampshire
| | - Sean Woolen
- Department of Radiology and Biomedical Imaging, UCSF, San Francisco, California
| | - Drew Caplin
- Division of Interventional Radiology, Donald and Barbara Zucker School of Medicine at Hofstra Northwell, New Hyde Park, New York
| | - Michael B Sneider
- Department of Radiology & Medical Imaging, University of Virginia, Charlottesville, Virginia
| | | | - Tiffany L Chan
- Department of Radiology, University of California, Los Angeles, California
| | - Nadja Kadom
- Department of Radiology and Imaging Sciences, Emory University School of Medicine, Atlanta, Georgia; Department of Radiology, Children's Healthcare of Atlanta- Egleston Campus, Atlanta, Georgia.
| |
Collapse
|
28
|
Zhang T, Zuo S. Drying enables multiple reuses of activated carbon without regeneration. Environ Sci Pollut Res Int 2023; 30:45097-45111. [PMID: 36701054 DOI: 10.1007/s11356-023-25481-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Accepted: 01/18/2023] [Indexed: 06/17/2023]
Abstract
Traditional regeneration of activated carbon is usually carried out by high-temperature oxidation in industrial processes, which reduces the quality and performance of the adsorbent, thereby increasing costs and damaging the environment. In this study, a simple drying process is proposed to enable reuse of spent activated carbon. The feasibility and merits of this method were evaluated in batch and continuous adsorption modes using dyes as adsorbates. The batch adsorption results showed that the activated carbon could be reused seven times after a simple drying process, because it led to full occupancy of the activated carbon pores by adsorbate molecules. The cumulative adsorption capacities of the activated carbon were as high as 1005.3 mg/g for methyl orange (MO) and 954.8 mg/g for methylene blue (MB). Continuous adsorption experiments in a fixed-bed column demonstrated that the activated carbon column could be reused more than three times after simply drying. Moreover, dye molecules adsorbed by the activated carbon were not leached by the stream of dye solution during reuse. This drying method exhibits three main merits for reuse of activated carbon, including (1) remarkably reduced consumption of fresh activated carbon to 51.5% or below, (2) significantly increased recovery of high-value adsorbate from the liquid phase, and (3) potential integration of multiple steps for industrial adsorption processes.
Collapse
Affiliation(s)
- Tao Zhang
- College of Chemical Engineering, International Innovation Center for Forest Chemicals and Materials, Nanjing Forestry University, Nanjing, 210037, China
| | - Songlin Zuo
- College of Chemical Engineering, International Innovation Center for Forest Chemicals and Materials, Nanjing Forestry University, Nanjing, 210037, China.
| |
Collapse
|
29
|
Abreu-Irizarry R, Torres-Lugo NJ, De Virgilio-Salgado L, Echegaray-Casalduc G, Deliz-Jimenez D, Martinez-Ramos J, Estarellas-Cobian S, Ramírez N, Foy-Parilla C. Is the whole-day use of surgical masks during the coronavirus pandemic increasing the contamination of surgeons' masks? Am J Infect Control 2023; 51:349-350. [PMID: 35944743 PMCID: PMC9356566 DOI: 10.1016/j.ajic.2022.08.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 07/31/2022] [Accepted: 08/01/2022] [Indexed: 11/21/2022]
Abstract
Evaluating the impact of surgical masks' conservation practices during the Coronavirus Disease pandemic in the bioburden of the operating room seems imperative, as they play a critical role against this pandemic. We demonstrate that surgeons' masks tend to be contaminated due to the conservation techniques to maximize protection equipment during the pandemic. Health institutions should highlight the importance of surgical mask exchange to avoid increments in surgical mask contamination.
Collapse
Affiliation(s)
| | | | | | | | - David Deliz-Jimenez
- Department of Orthopedic Surgery, University of Puerto Rico, San Juan, Puerto Rico
| | | | | | - Norman Ramírez
- Department of Orthopedic Surgery, Mayagüez Medical Center, Mayagüez, Puerto Rico
| | | |
Collapse
|
30
|
Bram L, Klemetsrud B. Calcium Carbonate in Waste Flooring for Neutralization of Acid Rock Drainage. Mine Water Environ 2023; 42:70-77. [PMID: 36819894 PMCID: PMC9925920 DOI: 10.1007/s10230-023-00926-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Accepted: 01/24/2023] [Indexed: 06/18/2023]
Abstract
Acid rock drainage (ARD) was successfully neutralized in this study using carpet tiles. Most polyolefin-based carpet tiles contain over 65% of finely ground calcium carbonate (CaCO3) powder by weight in the compound-blended and extruded backing structure; therefore, using them for neutralization is an innovative way to reuse a difficult-to-recycle complex and abundant product. The overall neutralization efficiency potential was calculated at 40% based on the density, purity, and surface images that display the domains of CaCO3 on the tiles. The carpet backing increased the mean of proton activity of AMD collected from a single acidic stream point within the Pinkerton Run tributary near Pittsburgh, PA from 3.3 to 6.1 over the span of four hours in batch-method experiments at CaCO3 loading levels of 0.1 g/L and overall surface area exposure of 229 mm2/mL. Hot acidity levels decreased from 90 to less than 10 mg CaCO3/L, and below detection limits after 20 h of neutralization. The treated and neutralized AMD sample contained 80 mg/L more calcium than the untreated, non-neutralized control, demonstrating the dissolution of CaCO3 from the carpet tile.
Collapse
Affiliation(s)
- Lauren Bram
- University of North Dakota, 241 Centennial Dr, Grand Forks, ND 58202 USA
| | - Bethany Klemetsrud
- University of North Dakota, 241 Centennial Dr, Grand Forks, ND 58202 USA
| |
Collapse
|
31
|
Namaldi O, Azgin ST. Evaluation of the treatment performance and reuse potential in agriculture of organized industrial zone (OIZ) wastewater through an innovative vermifiltration approach. J Environ Manage 2023; 327:116865. [PMID: 36450165 DOI: 10.1016/j.jenvman.2022.116865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 11/01/2022] [Accepted: 11/22/2022] [Indexed: 06/17/2023]
Abstract
Vermifiltration (VF) is a natural and sustainable biofilter that has many advantages, including being energy-free, cost-effective, and allowing ease of application and maintenance. In this study, the effectiveness of a lab-scale VF system was assessed by the removal efficiency of total suspended solids, electrical conductivity, chemical oxygen demand, total nitrogen, total phosphorus, fecal coliform, and heavy metals in organized industrial zones (OIZ) and domestic wastewater (DW) for the first time. Additionally, the reuse suitability of the treated wastewater was determined by comparing different countries' and global irrigational criteria. The lab systems were built with four layers: one worm-bed and three varying filtering materials, and operated at an optimum hydraulic loading rate of 1.8-2 m3/m2/day for 45 days with Eisenia fetida as the earthworm species. The results demonstrated that removal efficiencies of total suspended solids and chemical oxygen demand were found to be 95% and 80% in OIZ wastewater and 90% and 88% in DW, respectively. Total nitrogen and total phosphorus were removed at rates of 69% and 67% in OIZ wastewater, respectively, and 84% and 74% in DW. Besides, the VF system has shown satisfactory removal performance for heavy metals ranging from 51% to 77% in OIZ wastewater that has met Turkish national wastewater discharge limits. Although the final characterization of treated wastewater was suitable, heavy metal and fecal coliform levels have not met many countries' irrigation water quality criteria. To meet global irrigation standards and to enhance the VF performance, further experimental studies should be carried out, including parameters such as bed material type in the reactor, worm type, and different operating conditions.
Collapse
Affiliation(s)
- Onur Namaldi
- Department of Environment Engineering, Erciyes University, 38039, Kayseri, Turkey.
| | - Sukru Taner Azgin
- Department of Environment Engineering, Erciyes University, 38039, Kayseri, Turkey; Energy Conversions Research and Application Center, Erciyes University, 38039, Kayseri, Turkey.
| |
Collapse
|
32
|
Prakash A, Palkar RR. Co-processing of plastic waste in a cement kiln: a better option. Environ Sci Pollut Res Int 2023; 30:24804-24814. [PMID: 34837105 DOI: 10.1007/s11356-021-17725-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Accepted: 11/19/2021] [Indexed: 06/13/2023]
Abstract
This paper deals with the techniques to use plastic waste for co-processing in cement kiln for energy recovery. Plastics, a versatile material and friend to the common man, have now become one of the most serious environmental issues when it is discarded into the environment. The focus of this study is on eco-friendly disposal of plastic waste. Plastic is user-friendly, but because of its incomplete lifecycle, it has become a global issue. It is commonly disposed of by land filling or incinerating the waste, which adds to the pollution load at later stages. The authors' focus is on innovative techniques to use waste plastics in different proportions for the co-processing in cement kiln in order to highlight the energy recovery of the entire plant. It is a good solution to the waste disposal problems that arise due to plastic waste as well as municipal solid waste. The use of plastic waste as an alternative fuel for cement plants is suggested in this paper. The authors also promote this approach and suggest encouraging its calorific value utilization in the cement manufacturing plant. A systematic approach has been presented in this work to mitigate the energy consumption in the cement industries as well as environmental hazards due to plastic and municipal solid waste.
Collapse
Affiliation(s)
- Anand Prakash
- Department of Chemical Engineering, Faculty of Technology, Marwadi University, Rajkot, Gujarat, India
| | - Ritesh Ramesh Palkar
- Department of Chemical Engineering, Faculty of Technology, Marwadi University, Rajkot, Gujarat, India.
| |
Collapse
|
33
|
Campisi S, Leone M, Papacchini M, Evangelisti C, Polito L, Postole G, Gervasini A. Multifunctional interfaces for multiple uses: Tin(II)-hydroxyapatite for reductive adsorption of Cr(VI) and its upcycling into catalyst for air protection reactions. J Colloid Interface Sci 2023; 630:473-486. [PMID: 36334484 DOI: 10.1016/j.jcis.2022.10.116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 10/17/2022] [Accepted: 10/22/2022] [Indexed: 11/21/2022]
Abstract
Evidence collected to date by our group has demonstrated that tin(II)-functionalized hydroxyapatites (Sn/HAP) are a newly discovered class of ecofriendly reductive adsorbents for Cr(VI) removal from wastewaters. In this work an upgraded series of Sn/HAP materials assured a maximum removal capacity of ≈ 20 mgCr/g, doubling the previously reported value for Sn/HAP materials, thanks to higher Sn-dispersion as proved by X-ray photoelectron spectroscopy and electron microscopy. Insights on kinetics and thermodynamics of the reductive adsorption process are provided and the influence of pH, dosage, and nature of Cr(VI) precursors on chromium removal performances have been investigated. Pseudo-second-order kinetics described the interfacial reductive adsorption process on Sn/HAP, characterized by low activation energy (21 kJ mol-1), when measured in the 278-318 K range. Tests performed in the 2-6 pH interval showed similar efficiency in terms of Cr(VI) removal. Conventional procedures of recycling and regeneration resulted ineffective in restoring the pristine performances of the samples due to surface presence of both Sn(IV) and Cr(III). To overcome these weaknesses, the used samples (Sn + Cr/HAP) were upcycled into catalysts in a circular economy perspective. Used samples were tested as catalysts in gas-phase catalytic processes for air pollution remediation: selective catalytic reduction of NOx (NH3-SCR), NH3 selective catalytic Oxidation (NH3-SCO), and selective catalytic oxidation of methane to CO2. Catalytic tests enlightened the interesting activity of the upcycled Sn + Cr/HAP samples in catalytic oxidation processes, being able to selectively oxidize methane to CO2 at relatively low temperature.
Collapse
Affiliation(s)
- Sebastiano Campisi
- Dipartimento di Chimica, Università degli Studi di Milano, Via Golgi 19, 20133 Milano, Italy.
| | - Mirko Leone
- Dipartimento di Chimica, Università degli Studi di Milano, Via Golgi 19, 20133 Milano, Italy
| | - Maddalena Papacchini
- Department of Technological Innovations and Safety of Plants, INAIL, Products and Anthropic Settlements, Via di Fontana Candida 1, Monte Porzio Catone, 00078 Rome, Italy
| | - Claudio Evangelisti
- CNR - ICCOM - Istituto di Chimica dei Composti OrganoMetallici, Via G. Moruzzi 1, I-56124 Pisa, Italy
| | - Laura Polito
- CNR - Consiglio Nazionale delle Ricerche, SCITEC - Istituto di Scienze e Tecnologie Chimiche "Giulio Natta", Via G. Fantoli 16/15, 20138 Milano, Italy
| | - Georgeta Postole
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, IRCELYON, F-69626 Villeurbanne, France
| | - Antonella Gervasini
- Dipartimento di Chimica, Università degli Studi di Milano, Via Golgi 19, 20133 Milano, Italy.
| |
Collapse
|
34
|
Lorenzo Ruiz I, Arrizabalaga Arostegi H, Gaztañaga Arantzamendi L. Knowledge and preferences of postexplant management and opinions on the reuse of cardiac implantable electronic devices. Heart Rhythm 2023; 20:644-645. [PMID: 36610525 DOI: 10.1016/j.hrthm.2022.12.035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 12/09/2022] [Accepted: 12/20/2022] [Indexed: 01/06/2023]
Affiliation(s)
- Iñigo Lorenzo Ruiz
- Nursing department I, Faculty of Medicine and Nursing, University of the Basque Country - UPV/EHU, Sarriena, Leioa, Spain; BioCruces-Bizkaia Health Research Institute, Barakaldo, Spain.
| | | | | |
Collapse
|
35
|
Leonard R, Williams ID. Viability of a circular economy for space debris. Waste Manag 2023; 155:19-28. [PMID: 36335772 DOI: 10.1016/j.wasman.2022.10.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 09/18/2022] [Accepted: 10/23/2022] [Indexed: 06/16/2023]
Abstract
The orbital debris population is rapidly growing, increasing the chance of a Kessler-style collision event. We report a novel method for the production of estimates for the total monetary value of all debris objects and total mass of all objects currently in orbit. The method was devised using debris object data from the European Space Agency's DISCOS dataset, classified via a decision tree. 'Reuse' and 'scrap material' scenarios were developed. A high-end estimate for reuse shows a net value of $1.2 trillion. Median and low-end net value estimates of $600 billion and $570 billion, respectively, are probably judicious. A scrap material scenario produced a high mass estimate of 19,124 tonnes, a median of 6,978 tonnes and a low estimate of 5,312 tonnes. Development of in-orbit services will be crucial to solve the orbital debris problem. A future circular economy for space may be financially viable, with potentially beneficial consequences for risk reduction; resource efficiency; additional high-value employment; and climate-change knowledge, science, monitoring and early warning data.
Collapse
Affiliation(s)
- Ryan Leonard
- Faculty of Environmental and Life Sciences, University of Southampton, University Rd, Highfield, Southampton, Hampshire SO17 1BJ, UK
| | - Ian D Williams
- Faculty of Engineering and Physical Sciences, University of Southampton, University Rd, Highfield, Southampton, Hampshire SO17 1BJ, UK.
| |
Collapse
|
36
|
Jain M, Majumder A, Gupta AK, Ghosal PS. Application of a new baffled horizontal flow constructed wetland-filter unit (BHFCW-FU) for treatment and reuse of petrochemical industry wastewater. J Environ Manage 2023; 325:116443. [PMID: 36228396 DOI: 10.1016/j.jenvman.2022.116443] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2022] [Revised: 09/19/2022] [Accepted: 10/02/2022] [Indexed: 06/16/2023]
Abstract
The shortage of water resources and generation of large quantum of wastewater has posed a significant concern to the environment and public health. Recent research on wastewater treatment has started to focus on reusing wastewater for different activities to reduce the stress on natural water resources. Constructed wetland (CWs) is a low-cost wastewater treatment option. However, some drawbacks include large areal requirements and the need for tertiary treatment units for reusable effluent. In this study, a novel composite baffled horizontal flow CW filter unit (BHFCW-FU) was developed to overcome the drawbacks of the conventional CW. The BHFCW-FU planted with Chrysopogon zizanioides provided a nine times longer flow path, and the adjoined variable depth dual media filter reduced the total area requirement and served as a polishing unit. On average, the BHFCW-FU with horizontal sub-surface flow regime could efficiently remove around 93.93%, 87.20%, and 66.25% of turbidity, phenol, and COD, respectively, from real petrochemical wastewater (initial turbidity: 29.6 NTU, phenol: 4.52 mg/L, and COD: 381 mg/L) and rendered the effluent quality reusable for irrigation, industrial, and other environmental purposes. In synthetic wastewater (initial turbidity: 754 NTU, phenol: 10.87 mg/L, and COD: 1691 mg/L), the removal efficiency of turbidity, phenol, and COD were 99.50%, 93.73%, and 87.05%, respectively. In-depth substrate characterization was done to study the removal mechanism. The developed BHFCW-FU required less space and maintenance, provided reusable effluent, and overcame the drawbacks of conventional CWs. Hence, it may show immense potential as an effective wastewater treatment.
Collapse
Affiliation(s)
- Mahak Jain
- School of Water Resources, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India.
| | - Abhradeep Majumder
- School of Environmental Science and Engineering, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India.
| | - Ashok Kumar Gupta
- Environmental Engineering Division, Department of Civil Engineering, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India.
| | - Partha Sarathi Ghosal
- School of Water Resources, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India.
| |
Collapse
|
37
|
Chironga K, Swanepoel S, Dey R, Graham SM, Held M, Laubscher M. The reuse of circular external fixator components: an assessment of safety and potential savings. Eur J Orthop Surg Traumatol 2023; 33:119-124. [PMID: 34817660 DOI: 10.1007/s00590-021-03169-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Accepted: 11/15/2021] [Indexed: 01/07/2023]
Abstract
PURPOSE Cost-saving strategies are important, especially in a resource-constrained environment. One such strategy well supported in the literature is the reuse of temporary monolateral external fixator components, a strategy we utilize at our institution. The aim of the study was to determine the safety and cost saving associated with the reuse of definitive circular external fixator components in a resource-constrained environment. METHOD We performed a retrospective review of all adult patients who were treated with either new or reused circular external fixators from a single manufacturer between January and December 2017. Reused circular external fixator components, excluding half pins and wires, were subjected to an in-house reprocessing protocol. Cost savings were calculated as the difference between the price of a completely new frame and the amount invoiced for new components only in a reused frame. RESULTS Thirty-three patients were included in the study with an average age of 31.9 years. The mean duration of treatment with a circular external fixator was 5.8 months. No mechanical failure events were recorded during the study period. Our institution saved approximately 52% (R717 503.89) and 63% (R136 568.19) of expected total cost for hexapod and Ilizarov frames, respectively. CONCLUSION The strategy of reusing circular external fixator components is unconventional, and this study was conducted to evaluate the safety and potential savings in a resource-constrained environment. We demonstrated this practice to be reasonably safe and to result in significant cost savings which might be relevant in low-and-middle-income countries.
Collapse
Affiliation(s)
- Kudzai Chironga
- Orthopaedic Research Unit, University of Cape Town, Cape Town, South Africa.
| | - Stefan Swanepoel
- Orthopaedic Research Unit, University of Cape Town, Cape Town, South Africa
| | - Roopam Dey
- Orthopaedic Research Unit, University of Cape Town, Cape Town, South Africa
| | - Simon Matthew Graham
- Orthopaedic Research Unit, University of Cape Town, Cape Town, South Africa
- Institute of Population Health Sciences, University of Liverpool, Liverpool, UK
- Department of Orthopaedic and Trauma Surgery, Liverpool University Teaching Hospital Trust, Liverpool, UK
| | - Michael Held
- Orthopaedic Research Unit, University of Cape Town, Cape Town, South Africa
| | - Maritz Laubscher
- Orthopaedic Research Unit, University of Cape Town, Cape Town, South Africa
| |
Collapse
|
38
|
Marconi M, Landi D, Bocci E, Pietroni G, Mosconi EM. Single Use Personal Protective Equipment Reinforced Asphalt. Procedia CIRP 2023; 116:107-112. [PMID: 37091129 PMCID: PMC10110394 DOI: 10.1016/j.procir.2023.02.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/25/2023]
Abstract
Due to the COVID-19 pandemic, global personal protective equipment (PPE) volume production and demand increased by 300-400% between 2019 and 2021. In this scenario, the present study aims to propose and validate an innovative circular economy scenario for end of life (EoL) PPEs, reusing them to produce reinforced bituminous mixtures. Despite that several studies confirmed the possibility of reusing plastic in the asphalt mixtures, none of them investigated the potential of PPEs, highlighting the innovativeness in the scientific panorama. Five different alternatives of EoL PPE mixtures (different products, materials, dosages, etc.) were tested at laboratory scale to verify the technical feasibility of the proposed scenario. The most promising solution resulted to be the mix of gloves and face masks composed by polypropylene, polyethylene, nitrile and lattice at a dosage of 0,5% weight/weight that allowed to produce bituminous mixtures with acceptable performances in terms of relevant mechanical parameters while recycling waste PPEs. This leads to environmental benefits, since more than 3kg of EoL PPEs per square meter of road pavement can be reused instead of disposed (about 1,5 million tons/year considering the bituminous mixtures produced at European level), as well as economic benefits for public administrations and the collectivity, due to the reduced landfilling of solid wastes.
Collapse
Affiliation(s)
- Marco Marconi
- Department of Economics, Engineering, Society and Business Organization, Università degli Studi della Tuscia, Largo dell'Università, 01100 Viterbo, Italy
| | - Daniele Landi
- Department of Management, Information and Production Engineering, Università degli Studi di Bergamo, Via Pasubio 7/b, 24044 Dalmine (BG), Italy
| | - Edoardo Bocci
- Faculty of Engineering, Università eCampus, Via Isimbardi 10, 22060 Novedrate (CO), Italy
| | - Giorgia Pietroni
- Department of Economics, Engineering, Society and Business Organization, Università degli Studi della Tuscia, Largo dell'Università, 01100 Viterbo, Italy
| | - Enrico Maria Mosconi
- Department of Economics, Engineering, Society and Business Organization, Università degli Studi della Tuscia, Largo dell'Università, 01100 Viterbo, Italy
| |
Collapse
|
39
|
Landi D, Marconi M, Bocci E, Gianvincenzi M, Spreafico C. Reuse of end-of-life personal protective equipment in hot asphalt mixtures: an environmental evaluation. Procedia CIRP 2023; 116:420-425. [PMID: 37091128 PMCID: PMC10110393 DOI: 10.1016/j.procir.2023.02.071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/25/2023]
Abstract
In the present global health emergency, face masks, gowns, caps, gloves play a key role in limiting the diffusion of the COVID-19 pandemic, by acting as physical barriers to avoid droplets and filtrate exhalations coming from infected subjects. Since the most widespread devices are disposable products made of plastic or rubber materials, this means that relevant quantities of fossil resources are consumed, and huge amounts of wastes are generated. Currently the end of life of personal protective equipment (PPE) represents a problem in environmental, economic, and social terms. The market considers two possible disposal scenarios: incineration with energy recovery or landfill. In both cases, significant impacts are achieved both on the environment and on human health. This study aims to propose and validate a new scenario for PPE based on material reuse for bituminous conglomerates. The Life Cycle Assessment methodology and the experimental tests has been used to assess the environmental impacts in terms of both ReCiPe midpoints and endpoints and for demonstrate the technical feasibility of this new scenario. From an environmental point of view, relevant benefits were observed in comparison with the standard incineration for energy recovery or disposal in landfill.
Collapse
Affiliation(s)
- Daniele Landi
- Department of Management, Information and Production Engineering, Università degli Studi di Bergamo, Via Pasubio 7/b, 24044 Dalmine (BG), Italy
| | - Marco Marconi
- Department of Economics, Engineering, Society and Business Organization, Università degli Studi della Tuscia, Largo dell'Università, 01100 Viterbo, Italy
| | - Edoardo Bocci
- Faculty of Engineering, eCampus University, Novedrate, 22060, Como, Italy
| | - Mattia Gianvincenzi
- Department of Economics, Engineering, Society and Business Organization, Università degli Studi della Tuscia, Largo dell'Università, 01100 Viterbo, Italy
| | - Christian Spreafico
- Department of Management, Information and Production Engineering, Università degli Studi di Bergamo, Via Pasubio 7/b, 24044 Dalmine (BG), Italy
| |
Collapse
|
40
|
Kim KA, Cha YH, Kim HI, Om KS. Pyrite bio-leachate, mine wastewater can sterilize the rice (Oryza sativa L.) seeds and promote the germination. Environ Sci Pollut Res Int 2022; 29:84106-84112. [PMID: 35776299 DOI: 10.1007/s11356-022-21614-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Accepted: 06/17/2022] [Indexed: 06/15/2023]
Abstract
We developed the way to use pyrite bio-leachate (PBL), the wastewater of bioleaching of refractory gold ore in agriculture. PBL contains high amount of iron and at certain concentration, iron has toxicity on microorganisms. Therefore PBL can be used for rice seed sterilization. Method 1 is soaking rice seeds in 100%, 10%, and 2% PBL for 1, 2, 3, and 4 days (25℃) and drying them. Method 2 is soaking rice seeds in 100%, 10%, and 2% PBL for 30 min, 60 min, and 120 min (25℃), wetting for 2 days under the shade and drying for 5 days. Method 1 with 100%, 10%, and 2% PBL did not sterilize rice seeds completely. Method 2 with 100% and 10% PBL showed the complete sterilization effect and enhanced the germination of rice seeds in any soaking time. Similar results were achieved in seedbed experiments. PBL which has serious potential to pollute the environment can be used for rice seed sterilization. Soaking rice seeds in 100% and 10% PBL for 30 min, 60 min, and 120 min (25℃), wetting for 2 days under the shade and drying them for 5 days, can sterilize the rice seeds completely and enhance the germination.
Collapse
Affiliation(s)
- Kyong-A Kim
- Faculty of Life Science, Kim Il Sung University, Pyongyang, Democratic People's Republic of Korea.
| | - Yong-Hak Cha
- Faculty of Life Science, Kim Il Sung University, Pyongyang, Democratic People's Republic of Korea
| | - Hyon-Il Kim
- Faculty of Life Science, Kim Il Sung University, Pyongyang, Democratic People's Republic of Korea
| | - Ki-Su Om
- Faculty of Life Science, Kim Il Sung University, Pyongyang, Democratic People's Republic of Korea
| |
Collapse
|
41
|
Singh KK, Vaishya RC. Municipal Wastewater Treatment uses Vertical Flow Followed by Horizontal Flow in a Two-Stage Hybrid-Constructed Wetland Planted with Calibanus hookeri and Canna indica (Cannaceae). Water Air Soil Pollut 2022; 233:510. [PMID: 36504546 PMCID: PMC9717559 DOI: 10.1007/s11270-022-05984-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/13/2022] [Accepted: 11/22/2022] [Indexed: 06/17/2023]
Abstract
UNLABELLED The utilization of hybrid-constructed wetland systems has recently expanded due to more rigorous municipal wastewater discharge and also complex wastewaters treated in hybrid-constructed wetlands (HCWs). A lab-scale two-stage experimental setup of vertical flow followed by horizontal flow hybrid-constructed wetland (VFHCW-HFHCW) configuration was built. First-stage vertical flow hybrid-constructed wetland reactor with the surface area was 1963.49 cm2 and second-stage horizontal flow hybrid-constructed wetland reactor with the surface area was 2025 cm2. The HCW unit was planted with two type plants: Calibanus hookeri and Canna indica (Cannaceae). Influent Municipal wastewater flow rate 112.32 l/day, hydraulic loading rate (HLR) 0.55 m/day, and hydraulic retention time of 1 day. The efficiency was evaluated in municipal wastewater quality improvement and physico-chemical analysis in our laboratory. The removal rate after the second-stage horizontal flow of BOD3 at 27 °C, COD, TSS, TP, NH3-N, and NO3-N reached 92.75%, 89.90%, 85.45%, 88.83%, 99.09%, and 96.05%, respectively. The results shown after both stage hybrid-constructed wetland VFHCW-HFHCW, treated effluent of Municipal wastewater produced high-quality effluent which may be reused in gardening, agriculture, and flushing in toilet purpose according to Bureau of Indian Standards (BIS) code for practices. However, in the future, hybrid-constructed wetlands could be standards design criteria developing and enhancing the performance standards and economic meets both to make more popular technology of the hybrid-constructed wetland (HCW). SUPPLEMENTARY INFORMATION The online version contains supplementary material available at 10.1007/s11270-022-05984-0.
Collapse
Affiliation(s)
- Krishna Kumar Singh
- Department of Civil Engineering, Motilal Nehru National Institute of Technology Allahabad, Prayagraj, 211004 India
| | - Rakesh Chandra Vaishya
- Department of Civil Engineering, Motilal Nehru National Institute of Technology Allahabad, Prayagraj, 211004 India
| |
Collapse
|
42
|
Kheirabadi S, Sheikhi A. Recent advances and challenges in recycling and reusing biomedical materials. Curr Opin Green Sustain Chem 2022; 38:100695. [PMID: 36277846 PMCID: PMC9568467 DOI: 10.1016/j.cogsc.2022.100695] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/05/2022] [Revised: 07/25/2022] [Accepted: 07/27/2022] [Indexed: 06/16/2023]
Abstract
Medical waste has increased in the past 3 years as a result of the coronavirus disease 2019 (COVID-19) pandemic. This condition is expected to exacerbate due to the growing healthcare markets and aging population, posing health threats to the public via environmental footprints. To alleviate these impacts, there is an urgent need for medical waste management. This article highlights the drawbacks of current disposal methods and the potential of medical waste reuse and recycling, emphasizing the processes, materials, and chemistry involved in each practice. Further discussion is provided on the chemical and mechanical recycling of plastics as the dominating material in biomedical applications, and possible strategies and challenges in recycling and reusing biomedical materials are explored in this review.
Collapse
Affiliation(s)
- Sina Kheirabadi
- Department of Chemical Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Amir Sheikhi
- Department of Chemical Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
- Department of Biomedical Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
| |
Collapse
|
43
|
Chen J, Zhang B, Liu B, Yi Y, Shan Y, Zhou Y, Wang X, Lü X. Full components conversion of lignocellulose via a closed-circuit biorefinery process on a pilot scale. Environ Res 2022; 214:113946. [PMID: 35870504 DOI: 10.1016/j.envres.2022.113946] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 07/10/2022] [Accepted: 07/19/2022] [Indexed: 06/15/2023]
Abstract
This study developed a closed-circuit biorefinery process for full conversion of lignocellulose into ethanol, biogas and organic fertilizer with zero waste on a pilot scale. In the process, subcritical water pretreatment could effectively break the structure of wheat straw (WS), and ethanol was obtained from pretreated wheat straw (PWS) using two batches of simultaneous saccharification and fermentation (SSF). The pretreatment and ethanol fermentation wastes were reused for biogas and organic fertilizer production by anaerobic digestion (AD), whereas the pretreatment and ethanol conversion efficiency were reduced when supernatant after AD was recovered for next batch pretreatment. The yields of ethanol (0.08-0.09 g/g), biogas (0.05-0.10 L/g) and organic fertilizer (0.55-0.79 g/g) were demonstrated through mass balance. Furthermore, the hidden problems were exposed on pilot-scale conversion process, and several strategies were provided for optimizing the biorefinery process in the future.
Collapse
Affiliation(s)
- Jiaxin Chen
- College of Food Science and Engineering, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Biying Zhang
- College of Enology, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Bianfang Liu
- College of Food Science and Engineering, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Yanglei Yi
- College of Food Science and Engineering, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Yuanyuan Shan
- College of Food Science and Engineering, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Yuan Zhou
- College of Food Science and Engineering, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Xin Wang
- College of Food Science and Engineering, Northwest A&F University, Yangling, 712100, Shaanxi, China.
| | - Xin Lü
- College of Food Science and Engineering, Northwest A&F University, Yangling, 712100, Shaanxi, China.
| |
Collapse
|
44
|
Liu W, Yu Y, Cheng W, Zhou M, Cui L, Wang P, Wang Q. Melanin-like nanoparticles loaded with Ag NPs for rapid photothermal sterilization and daily protection of textiles. Colloids Surf B Biointerfaces 2022; 219:112829. [PMID: 36137339 DOI: 10.1016/j.colsurfb.2022.112829] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Revised: 08/20/2022] [Accepted: 09/02/2022] [Indexed: 10/31/2022]
Abstract
The dual-function antibacterial and photothermal melanin-like nanoparticles (Ag NPs@Fe3+-SMNPs) were prepared and used for fabric modification. The modified fabric had excellent photothermal and antibacterial performance. By Xenon lamp irradiation, the temperature of the fabric surface rises rapidly to over 80 °C in 30 s. The modified fabric had the photothermal sterilization rates of 99% against E. coli or S. aureus after 10 min of Xenon lamp irradiation. Meanwhile, Ag NPs provided excellent antibacterial properties to the modified fabric used in daily life, and the antibacterial rate of the modified fabric was 99%. Additionally, the modified fabric showed excellent air and moisture permeability, and had excellent photothermal and antibacterial properties after 20 times of washing and 100 times of rubbing. The modified fabric was modified with the antibacterial and photothermal dual-function melanin-like nanoparticles, showing great potential in personal protective equipment (such as masks) to meet people's needs in the future.
Collapse
Affiliation(s)
- Wenjing Liu
- Key Laboratory of Science and Technology of Eco-Textile, Ministry of Education, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Yuanyuan Yu
- Key Laboratory of Science and Technology of Eco-Textile, Ministry of Education, Jiangnan University, Wuxi, Jiangsu 214122, China.
| | - Wei Cheng
- Key Laboratory of Science and Technology of Eco-Textile, Ministry of Education, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Man Zhou
- Key Laboratory of Science and Technology of Eco-Textile, Ministry of Education, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Li Cui
- Key Laboratory of Science and Technology of Eco-Textile, Ministry of Education, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Ping Wang
- Key Laboratory of Science and Technology of Eco-Textile, Ministry of Education, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Qiang Wang
- Key Laboratory of Science and Technology of Eco-Textile, Ministry of Education, Jiangnan University, Wuxi, Jiangsu 214122, China
| |
Collapse
|
45
|
Yauger CY, Waite LK, Baker K, Mallory A, Attilio LP, Stucky LC, Stone MJ, Ioset MN, Johnson D. Durability and disinfection of single-use endotracheal tubes following exposure to commonly available medical disinfecting compounds. Nurs Outlook 2022; 70:S127-S135. [PMID: 36585059 DOI: 10.1016/j.outlook.2022.08.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 08/17/2022] [Accepted: 08/17/2022] [Indexed: 12/30/2022]
Abstract
BACKGROUND Reusing single-use medical supplies offers a capability enhancement during massive casualty incidents when resupply of medical supplies is unavailable in times of national health care crises. This pilot study determined the feasibility of disinfection of endotracheal tubes with commonly used chemical disinfecting agents. METHODS Endotracheal tubes (ETTs) were subjected to either CaviCide, Neutral Disinfectant Cleaner, Cidex, or saline according to the manufacturer's recommended disinfection contact times. Alterations to the polyvinyl chloride (PVC) integrity by disinfecting agents were determined by volume/pressure measurements within the ETT cuff. To test the disinfection rate, ETTs were inoculated with Staphylococcus Aureus and subjected to experimental disinfection protocol. FINDINGS There were no significant alterations to ETT tracheal cuff function and mixed results in disinfection among ETTs. ETTs bacterial culture data presented possible contamination among the groups. DISCUSSION These data support the feasibility of single-use ETT reuse as a last resort while making every attempt and effort to follow established protocols to minimize harm to the patient.
Collapse
Affiliation(s)
- Col Young Yauger
- United States Army Graduate Program in Anesthesia Nursing, Joint Base, San Antonio, TX.
| | - Lt Kyle Waite
- Navy Medicine Training and Support Center, Joint Base San Antonio, San Antonio, TX
| | - Kimberly Baker
- Science & Technology 59th Medical Wing, JBSA Lackland Air Force Base, San Antonio, TX
| | - Amber Mallory
- Science & Technology 59th Medical Wing, JBSA Lackland Air Force Base, San Antonio, TX
| | - Ltc Peter Attilio
- Science & Technology 59th Medical Wing, JBSA Lackland Air Force Base, San Antonio, TX
| | - Ltc Christopher Stucky
- Center for Nursing Science and Clinical Inquiry, Landstuhl Regional Medical Center, Germany
| | - Maj Jessica Stone
- United States Army Graduate Program in Anesthesia Nursing, Joint Base, San Antonio, TX
| | - Maj Nicole Ioset
- United States Army Graduate Program in Anesthesia Nursing, Joint Base, San Antonio, TX
| | - Don Johnson
- United States Army Graduate Program in Anesthesia Nursing, Joint Base, San Antonio, TX
| |
Collapse
|
46
|
Piemonti A, Conforti A, Cominoli L, Luciano A, Plizzari G, Sorlini S. Exploring the Potential for Steel Slags Valorisation in an Industrial Symbiosis Perspective at Meso-scale Level. Waste Biomass Valorization 2022; 14:1-21. [PMID: 36254271 PMCID: PMC9558026 DOI: 10.1007/s12649-022-01940-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Accepted: 09/17/2022] [Indexed: 06/16/2023]
Abstract
A greater reuse of steel slags would bring considerable benefits both from an environmental and economic point of view. The development of tools and strategies to monitor at different scales resources and waste flows would allow for better resource planning and a more sustainable management on territory. The aim of this study is to investigate and analyse the supply chain that deals with the management of steel slags at meso-level, in order to investigate the state of implementation of industrial symbiosis (IS), its potential and its improvement. A Mass Flow Analysis (MFA) has been implemented, through big data analysis coming from the integration of regional and provincial databases with a careful data processing from questionnaires. This integrated methodology has proved to be a valid tool to monitor the recovery and reuse, the implementation of industrial symbiosis and to plan improvement actions. This paper reports a representation of the current situation regarding the production, recovery and reuse of these materials in production processes for which they are suitable, with a view to their full exploitation, following the principles of circular economy and an analysis of the mutual exchange that occur among steelmaking plants and other business partners in a network of industrial companies. The results showed that most of the steel slags managed at meso-level (Province of Brescia, Italy) is still unfortunately destined for landfill with low percentage of them classified as by-product highlighting as the IS is not adequately applied. Of the slag destined for treatments and recovery processes, almost all of them are Electric Arc Furnace slag, which are mainly reused for hydraulically bound base layers and road sub-bases (about 85% of the total recovered) and as aggregates for the production of cement and bituminous mixes (about 15% of the total recovered). Results shows as further effort should be made in term of policies and strategies to incentivize IS and to increase the recovery. Graphical abstract
Collapse
Affiliation(s)
- A. Piemonti
- Department of Civil, Environmental, Architectural Engineering, and Mathematics (DICATAM), University of Brescia, 25123 Brescia, Lombardy Italy
| | - A. Conforti
- Department of Civil, Environmental, Architectural Engineering, and Mathematics (DICATAM), University of Brescia, 25123 Brescia, Lombardy Italy
| | - L. Cominoli
- Department of Civil, Environmental, Architectural Engineering, and Mathematics (DICATAM), University of Brescia, 25123 Brescia, Lombardy Italy
| | - A. Luciano
- Department for Sustainability, ENEA (Italian National Agency for New Technologies, Energy and Sustainable Economic Development), Resource Valorization lab, Via Anguillarese 301, 00133 Rome, Lazio Italy
| | - G. Plizzari
- Department of Civil, Environmental, Architectural Engineering, and Mathematics (DICATAM), University of Brescia, 25123 Brescia, Lombardy Italy
| | - S. Sorlini
- Department of Civil, Environmental, Architectural Engineering, and Mathematics (DICATAM), University of Brescia, 25123 Brescia, Lombardy Italy
| |
Collapse
|
47
|
Never B. Green and Social Regulation of Second Hand Appliance Markets: the Case of Air Conditioners in the Philippines. Circ Econ Sustain 2022; 3:1-20. [PMID: 36157593 PMCID: PMC9483484 DOI: 10.1007/s43615-022-00212-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/16/2022] [Accepted: 08/29/2022] [Indexed: 11/30/2022]
Abstract
Second hand markets for appliances such as air conditioners are largely unregulated in many low and middle income countries this far. Energy and climate goals may require a speedy phase-out of old appliances, whereas material resource and social concerns may call for repairing and reusing air conditioners as long as possible. Demand for space cooling is soaring globally, increasing regulatory pressure. In middle income countries such as the Philippines, the market for second hand room air conditioners is sizeable. This study targets the question when and how to regulate the market for used air conditioners to balance green and social goals. It analyses the second hand market for air conditioners in Metro Manila, uncovering the general supply chain, business models and customers as well as energy efficiency, refrigerant and repair practices. The study draws on qualitative interviews with 10 experts and 29 retailers and technicians active in the semi-formal second hand market for air conditioners. Available information of lifecycle analyses is taken into account, but the focus of this contribution lies on social impacts of potential regulation. Overall, short-to-medium interventions in the second hand market are required to balance environmental and social goals that target the different players in the market: construction industry, brokers, retailers and technicians, customers and scrap dealers. Neither a complete ban nor delaying or foregoing regulation is advisable. Specific policy recommendations are derived.
Collapse
Affiliation(s)
- Babette Never
- IDOS German Institute of Development and Sustainability, Tulpenfeld 6, 53113 Bonn, Germany
| |
Collapse
|
48
|
Boussuge-Roze J, Boveda S, Mahida S, Anic A, Conte G, Chun JKR, Marijon E, Sacher F, Jais P. Current practices and expectations to reduce environmental impact of electrophysiology catheters: results from an EHRA/LIRYC European physician survey. Europace 2022; 24:1300-1306. [PMID: 35943366 DOI: 10.1093/europace/euac085] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Accepted: 05/13/2022] [Indexed: 01/13/2023] Open
Abstract
The healthcare sector accounts for nearly 5% of global greenhouse gas emissions (GHG) and is a significant contributor to complex waste. Reducing the environmental impact of technology-heavy medical fields such as cardiac electrophysiology (EP) is a priority. The aim of this survey was to investigate the practice and expectations in European centres on EP catheters environmental sustainability. A 24-item online questionnaire on EP catheters sustainability was disseminated by the EHRA Scientific Initiatives Committee in collaboration with the Lyric Institute. A total of 278 physicians from 42 centres were polled; 62% were motivated to reduce the environmental impact of EP procedures. It was reported that 50% of mapping catheters and 53% of ablation catheters are usually discarded to medical waste, and only 20% and 14% of mapping and ablation catheters re-used. Yet, re-use of catheters was the most commonly cited potential sustainability solution (60% and 57% of physicians for mapping and ablation catheters, respectively). The majority of 69% currently discarded packaging. Reduced (42%) and reusable (39%) packaging also featured prominently as potential sustainable solutions. Lack of engagement from host institutions was the most commonly cited barrier to sustainable practices (59%). Complexity of the process and challenges to behavioral change were other commonly cited barriers (48% and 47%, respectively). The most commonly cited solutions towards more sustainable practices were regulatory changes (31%), education (19%), and product after-use recommendations (19%). In conclusion, EP physicians demonstrate high motivation towards sustainable practices. However, significant engagement and behavioural change, at local institution, regulatory and industry level is required before sustainable practices can be embedded into routine care.
Collapse
Affiliation(s)
- Julie Boussuge-Roze
- Electrophysiology and Heart Modelling institute, IHU Liryc, Univ. Bordeaux, INSERM, CRCTB, U 1045, Campus Xavier Arnozan - Avenue du Haut-Leveque, F-33600 Pessac, France
- CHU de Bordeaux, Department of Electrophysiology and Cardiac Stimulation, F-33000 Bordeaux, France
| | - Serge Boveda
- Clinique Pasteur, Heart Rhythm Department, Toulouse, France
- Universiteit Ziekenhuis Brussel - VUB, Brussels, Belgium
| | - Saagar Mahida
- Electrophysiology and Heart Modelling institute, IHU Liryc, Univ. Bordeaux, INSERM, CRCTB, U 1045, Campus Xavier Arnozan - Avenue du Haut-Leveque, F-33600 Pessac, France
- Department of Cardiac Electrophysiology, Liverpool Heart and Chest Hospital, NHS Trust, UK
| | - Ante Anic
- University Hospital Centre Split, Department for Cardiovascular diseases, Split, Croatia
| | - Giulio Conte
- Cardiology Department, Cardiocentro Ticino Institute, Ente Ospedaliero Cantonale, Lugano, Switzerland
| | - Julian K R Chun
- CCB, Cardiology, Med. Klinik III, Markuskrankenhaus, Frankfurt, Germany
| | - Eloi Marijon
- European Georges Pompidou Hospital and Paris City University, Cardiology Department, Paris, France
| | - Frederic Sacher
- Electrophysiology and Heart Modelling institute, IHU Liryc, Univ. Bordeaux, INSERM, CRCTB, U 1045, Campus Xavier Arnozan - Avenue du Haut-Leveque, F-33600 Pessac, France
- CHU de Bordeaux, Department of Electrophysiology and Cardiac Stimulation, F-33000 Bordeaux, France
| | - Pierre Jais
- Electrophysiology and Heart Modelling institute, IHU Liryc, Univ. Bordeaux, INSERM, CRCTB, U 1045, Campus Xavier Arnozan - Avenue du Haut-Leveque, F-33600 Pessac, France
- CHU de Bordeaux, Department of Electrophysiology and Cardiac Stimulation, F-33000 Bordeaux, France
| |
Collapse
|
49
|
Meiryani, Huang SM, Soepriyanto G, Audrelia J, Fahlevi M, Aljuaid M, Grabowska S. An exploration of circular water management accountability: A case from Indonesia. Heliyon 2022; 8:e10556. [PMID: 36148275 PMCID: PMC9485031 DOI: 10.1016/j.heliyon.2022.e10556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 04/08/2022] [Accepted: 09/02/2022] [Indexed: 11/29/2022] Open
Abstract
Purpose Palm oil is the leading commodity of the plantation sub-sector in Indonesia, providing a tremendous economic impact for the people and the government. However, the development of oil palm plantations raises the issue of environmental damage because oil palms use large quantities of water. The purpose of this study is to explore circular water management accountability practices through disclosures issued by each company and the effectiveness of water management voluntary disclosure under the Global Reporting Initiative (GRI) standards on increasing stakeholder trust and reducing information asymmetry. Design/methodology/approach This study used secondary data collected from reports published by plantation sub-sector companies listed on the Indonesia Stock Exchange (IDX) and accessible online. Analysis was performed using the method of Miles and Huberman (1992): data reduction, data presentation, conclusion drawing, and verification. Data reduction was conducted by identifying plantation sub-sector companies that reported water management practices consecutively from 2018 to 2020 and seeking all disclosures related to water management and circular water management practices with 3R indicators. Data presentation was carried out by presenting findings from circular water management disclosures and comparing inter-year circular water management accountability practices to examine reporting routines. Finally, conclusions were drawn and verified. Findings The results of this study show that only six of the 20 plantation sub-sector companies reported circular water management with 3R indicators for three consecutive years (2018-2020). Two of these six companies attached GRI index references to their reports consisting of GRI 303 (Water and Effluents) and GRI 306 (Waste), while the other four did not. In addition, water management voluntary disclosure under the GRI standards was shown to increase stakeholder trust and reduce information asymmetry. Originality/value This study raises the concepts of water accounting and circular water management accountability practices in plantation sub-sector companies listed on Indonesia Stock Exchange (IDX).
Collapse
Affiliation(s)
- Meiryani
- Accounting Department, School of Accounting, Bina Nusantara University, Jakarta 11480, Indonesia
| | - Shi-Ming Huang
- Department of Accounting and Information Technology, National Chung Cheng University, Chiayi County, Taiwan
| | - Gatot Soepriyanto
- Accounting Department, School of Accounting, Bina Nusantara University, Jakarta 11480, Indonesia
| | - Jessica Audrelia
- Accounting Department, School of Accounting, Bina Nusantara University, Jakarta 11480, Indonesia
| | - Mochammad Fahlevi
- Management Department, BINUS Online Learning, Bina Nusantara University, 11480, Indonesia
| | - Mohammed Aljuaid
- Department of Health Administration, College of Business Administration, King Saud University, Riyadh, Saudi Arabia
| | | |
Collapse
|
50
|
Somu P, Narayanasamy S, Gomez LA, Rajendran S, Lee YR, Balakrishnan D. Immobilization of enzymes for bioremediation: A future remedial and mitigating strategy. Environ Res 2022; 212:113411. [PMID: 35561819 DOI: 10.1016/j.envres.2022.113411] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 04/19/2022] [Accepted: 04/29/2022] [Indexed: 06/15/2023]
Abstract
Over the years, extensive urbanization and industrialization have led to xenobiotics contamination of the environment and also posed a severe threat to human health. Although there are multiple physical and chemical techniques for xenobiotic pollutants management, bioremediation seems to be a promising technology from the environmental perspective. It is an eco-friendly and low-cost method involving the application of microbes, plants, or their enzymes to degrade xenobiotics into less toxic or non-toxic forms. Moreover, bioremediation involving enzymes has gained an advantage over microorganisms or phytoremediation due to better activity for pollutant degradation with less waste generation. However, the significant disadvantages associated with the application of enzymes are low stability (storage, pH, and temperature) as well as the low possibility of reuse as it is hard to separate from reaction media. The immobilization of enzymes without affecting their activity provides a possible solution to the problems and allows reusability by easing the process of separation with improved stability to various environmental factors. The present communication provides an overview of the importance of enzyme immobilization in bioremediation, carrier selection, and immobilization methods, as well as the pros and cons of immobilization and its prospects.
Collapse
Affiliation(s)
- Prathap Somu
- School of Chemical Engineering, Yeungnam University, Gyeongsan, 38541, Republic of Korea; Department of Bioengineering, Institute of Biotechnology, Saveetha School of Engineering, SIMATS, Chennai, 600124, India
| | - Saranya Narayanasamy
- Department of Bioengineering, Institute of Biotechnology, Saveetha School of Engineering, SIMATS, Chennai, 600124, India
| | - Levin Anbu Gomez
- Department of Biotechnology, Karunya Institute of Technology and Sciences (Deemed to Be University), Coimbatore, 641114, India
| | - Saravanan Rajendran
- Departamento de Ingeniería Mecánica, Facultad de Ingeniería, Universidad de Tarapacá, Avda. General Velásquez 1775, Arica, Chile
| | - Yong Rok Lee
- School of Chemical Engineering, Yeungnam University, Gyeongsan, 38541, Republic of Korea.
| | - Deepanraj Balakrishnan
- College of Engineering, Prince Mohammad Bin Fahd University, Al Khobar, 31952, Saudi Arabia.
| |
Collapse
|