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Dai M, Di J, Zhang T, Li T, Dong Y, Bao S, Fu S. Reparation of nano-FeS by ultrasonic precipitation for treatment of acidic chromium-containing wastewater. Sci Rep 2024; 14:211. [PMID: 38168529 PMCID: PMC10761992 DOI: 10.1038/s41598-023-50070-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2023] [Accepted: 12/14/2023] [Indexed: 01/05/2024] Open
Abstract
Nano-FeS is prone to agglomeration in the treatment of chromium-containing wastewater, and ultrasonic precipitation was used to synthesize nano-FeS to increase its dispersion. The optimization of the preparation method was carried out by single factor method (reaction temperature, Fe/S molar ratio and FeSO4 dropping flow rate) and response surface methodology. Dynamic experiments were constructed to investigate the long-term remediation effect and water column changes of nano-FeS and its solid particles. The changes of the remediation materials before and after the reaction were observed by SEM, and the mechanism of the remediation of chromium-containing wastewater by nano-FeS prepared by ultrasonication was revealed by XRD. The results showed that the reaction temperature of 12 °C, Fe/S molar ratio of 3.5 and FeSO4 dropping flow rate of 0.5 mL/s were the best parameters for the preparation of nano-FeS. The nano-FeS has efficient dispersion and well-defined mesoporous structure in the form of needles and whiskers of 40-80 nm. The dynamic experiments showed that the average removal of Cr(VI) and total chromium by nano-FeS and its immobilized particles were 94.97% and 63.51%, 94.93% and 45.76%, respectively. Fe2+ and S2- ionized by the FeS nanoparticles rapidly reduced Cr(VI) to Cr(III). Part of S2- may reduce Fe3+ to Fe2+, forming a small iron cycle that gradually decreases with the ion concentration. Cr(III) and Fe2+ form Cr(OH)3 and FeOOH, respectively, with the change of aqueous environment. Another part of S2- reacts with Cr(III) to form Cr2S3 precipitate or is oxidized to singlet sulfur. The FeS nanoparticles change from short rod-shaped to spherical shape. Compared with the conventional chemical precipitation method, the method used in this study is simple, low cost, small particle size and high removal rate per unit.
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Affiliation(s)
- Mengjia Dai
- College of Mining, Liaoning Technical University, Fuxin, 123000, China
| | - Junzhen Di
- College of Civil Engineering, Liaoning Technical University, Fuxin, 123000, China.
| | - Ting Zhang
- College of Civil Engineering, Liaoning Technical University, Fuxin, 123000, China
| | - Tuoda Li
- College of Civil Engineering, Liaoning Technical University, Fuxin, 123000, China
| | - Yanrong Dong
- College of Civil Engineering, Liaoning Technical University, Fuxin, 123000, China
| | - Sihang Bao
- College of Mining, Liaoning Technical University, Fuxin, 123000, China
| | - Saiou Fu
- College of Civil Engineering, Liaoning Technical University, Fuxin, 123000, China
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2
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Zhang X, Li Y, Zou W, Ding L, Chen J. Sorption enhancement of Cr(VI) from aqueous solution by polyaniline confined in three-dimensional network of composite porous hydrogel. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:92404-92416. [PMID: 37491493 DOI: 10.1007/s11356-023-28948-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Accepted: 07/19/2023] [Indexed: 07/27/2023]
Abstract
Hexavalent chromium Cr(VI) is a typical harmful pollutant, which is carcinogenic or mutagenic to aquatic animals and humans. In this study, sepiolite/humic acid/polyvinyl alcohol@ polyaniline (SC/HA/PVA@PANI) composite porous hydrogel adsorbent was synthesized by Pickering emulsion template in situ chemical oxidative polymerization for adsorption of Cr(VI) from aqueous solution. The in situ polymerization of aniline at the Pickering emulsion interface and the unique three-dimensional network structure of the hydrogel act as an effective "confinement" for the growth of the polymer. The porous structure of the material acts as a water channel, which effectively accelerates the binding of the adsorbate to the adsorption sites, and significantly improves the adsorption rate and adsorption capacity. The adsorption capacity of PANI for Cr(VI) confined in three-dimensional network of composite porous SC/HA/PVA@PANI hydrogel reached 1180.97 mg/g-PANI, which increased about 27-fold compared the adsorption capacity of pure PANI (43.48 mg/g). It is shown that the experimental design effectively avoids the agglomeration of PANI and improves its potential adsorption performance. In addition, the analysis of FESEM-EDX, FT-IR, and XPS spectra before and after adsorption confirmed that the main adsorption mechanisms of Cr(VI) on SC/HA/PVA@PANI included ion exchange, electrostatic attraction, and redox reaction. In conclusion, SC/HA/PVA@PANI has good stability and excellent adsorption performance, which is a new type of Cr(VI) ion adsorbent with great potential.
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Affiliation(s)
- Xuejiao Zhang
- College of Chemistry and Chemical Engineering, Anhui University of Technology, Ma Xiang road, Maanshan, 243000, People's Republic of China
| | - Yulin Li
- College of Chemistry and Chemical Engineering, Anhui University of Technology, Ma Xiang road, Maanshan, 243000, People's Republic of China
| | - Wenjie Zou
- College of Chemistry and Chemical Engineering, Anhui University of Technology, Ma Xiang road, Maanshan, 243000, People's Republic of China
| | - Li Ding
- College of Chemistry and Chemical Engineering, Anhui University of Technology, Ma Xiang road, Maanshan, 243000, People's Republic of China
| | - Jun Chen
- College of Chemistry and Chemical Engineering, Anhui University of Technology, Ma Xiang road, Maanshan, 243000, People's Republic of China.
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Tomon TRB, Estrada RJR, Fernandez RMD, Capangpangan RY, Lubguban AA, Dumancas GG, Alguno AC, Malaluan RM, Bacosa HP, Lubguban AA. Coconut power: a sustainable approach for the removal of Cr 6+ ions using a new coconut-based polyurethane foam/activated carbon composite in a fixed-bed column. RSC Adv 2023; 13:20941-20950. [PMID: 37448637 PMCID: PMC10336476 DOI: 10.1039/d3ra02266h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Accepted: 07/05/2023] [Indexed: 07/15/2023] Open
Abstract
To attain efficient removal of hexavalent chromium (Cr6+) from aqueous solutions, a novel polyurethane foam-activated carbon (PUAC) adsorbent composite was developed. The composite material was synthesized by the binding of coconut shell-based activated carbon (AC) onto a coconut oil-based polyurethane matrix. To thoroughly characterize the physicochemical properties of the newly developed material, various analytical techniques including FTIR spectroscopy, SEM, XRD, BET, and TGA analyses were conducted. The removal efficiency of the PUAC composite in removing Cr6+ ions from aqueous solutions was evaluated through column experiments with the highest adsorption capacity of 28.41 mg g-1 while taking into account variables such as bed height, flow rate, initial Cr6+ ion concentration, and pH. Experimental data were fitted using Thomas, Yoon-Nelson, and Adams-Bohart models to predict the column profiles and the results demonstrate high breakthrough and exhaustion time dependence on these variables. Among the obtained R2 values of the models, a better fit was observed using the Thomas and Yoon-Nelson models, indicating their ability to effectively predict the adsorption of Cr6+ ions in a fixed bed column. Significantly, the exhausted adsorbent can be conveniently regenerated without any noteworthy loss of adsorption capability. Based on these findings, it can be concluded that this new PUAC composite material holds significant promise as a potent sorbent for wastewater treatment backed by its excellent performance, cost-effectiveness, biodegradability, and outstanding reusability.
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Affiliation(s)
- Tomas Ralph B Tomon
- Center for Sustainable Polymers, Mindanao State University - Iligan Institute of Technology 9200 Iligan City Philippines
- Graduate Program of Environmental Science, Department of Biological Sciences, Mindanao State University - Iligan Institute of Technology 9200 Iligan City Philippines
| | - Renz John R Estrada
- Center for Sustainable Polymers, Mindanao State University - Iligan Institute of Technology 9200 Iligan City Philippines
| | - Rubie Mae D Fernandez
- Center for Sustainable Polymers, Mindanao State University - Iligan Institute of Technology 9200 Iligan City Philippines
- Graduate Program of Environmental Science, Department of Biological Sciences, Mindanao State University - Iligan Institute of Technology 9200 Iligan City Philippines
| | - Rey Y Capangpangan
- Department of Physical Sciences and Mathematics, Mindanao State University at Naawan 9023 Naawan Philippines
| | - Alona A Lubguban
- Department of Mathematics, Statistics, and Computer Studies, University of the Philippines, Rural High School Paciano Rizal Bay, 4033 Laguna Philippines
| | - Gerard G Dumancas
- Department of Chemistry, The University of Scranton Scranton PA 18510 USA
| | - Arnold C Alguno
- Center for Sustainable Polymers, Mindanao State University - Iligan Institute of Technology 9200 Iligan City Philippines
- Department of Physics, Mindanao State University - Iligan Institute of Technology 9200 Iligan City Philippines
| | - Roberto M Malaluan
- Center for Sustainable Polymers, Mindanao State University - Iligan Institute of Technology 9200 Iligan City Philippines
- Department of Chemical Engineering and Technology, Mindanao State University - Iligan Institute of Technology 9200 Iligan City Philippines
| | - Hernando P Bacosa
- Center for Sustainable Polymers, Mindanao State University - Iligan Institute of Technology 9200 Iligan City Philippines
- Graduate Program of Environmental Science, Department of Biological Sciences, Mindanao State University - Iligan Institute of Technology 9200 Iligan City Philippines
| | - Arnold A Lubguban
- Center for Sustainable Polymers, Mindanao State University - Iligan Institute of Technology 9200 Iligan City Philippines
- Department of Chemical Engineering and Technology, Mindanao State University - Iligan Institute of Technology 9200 Iligan City Philippines
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Wu Y, Ming J, Zhou W, Xiao N, Cai J. Efficiency and mechanism in preparation and heavy metal cation/anion adsorption of amphoteric adsorbents modified from various plant straws. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 884:163887. [PMID: 37142006 DOI: 10.1016/j.scitotenv.2023.163887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 04/22/2023] [Accepted: 04/27/2023] [Indexed: 05/06/2023]
Abstract
Cellulose can be modified for the loading of functional groups such as amino groups, sulfydryl groups, and carboxyl groups. Cellulose-modified adsorbents generally have specific adsorption capacities for either heavy metal anions or cations, and possess the advantages of wide raw material source, high modification efficiency, high adsorbent recyclability, and great convenience in recovery of the adsorbed heavy metals. At present, preparation of amphoteric heavy metal adsorbents from lignocellulose has attracted great attention. However, the difference in efficiency of preparing heavy metal adsorbents by modification of various plant straw materials and mechanism for the difference remain to be further explored. In this study, three plant straws, including Eichhornia crassipes (EC), sugarcane bagasse (SB) and metasequoia sawdust (MS), were sequentially modified by tetraethylene-pentamine (TEPA) and biscarboxymethyl trithiocarbonate (BCTTC) to obtain amphoteric cellulosic adsorbents (EC-TB, SB-TB and MS-TB, respectively), which can simultaneously adsorb heavy metal cations or anions. The heavy metal adsorption properties and mechanism before and after modification were compared. Pb(II) and Cr(VI) removal rates by the three adsorbents were 2.2-4.3 folds and 3.0-13.0 folds of those before modification, respectively, following the order of MS-TB > EC-TB > SB-TB. In the five-cycle adsorption-regeneration test, the Pb(II) and Cr(VI) removal rate by MS-TB decreased by 58.1 % and 21.5 %, respectively. Among the three plant straws, MS possessed the most abundant hydroxyl groups and the largest specific surface area (SSA), and accordingly MS-TB had the highest load of adsorption functional groups [(C)NH, (S)CS and (HO)CO] and also the largest SSA among the three adsorbents, which contribute to its highest modification and adsorption efficiency. This study is of great significance for screening suitable raw plant materials to prepare amphoteric heavy metal adsorbents with superior adsorption performance.
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Affiliation(s)
- Yong Wu
- Lab of Ecological and Environmental Engineering, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China; Collaborative Innovation Center for Sustainable Pig Production, Wuhan 430070, China
| | - Jiabao Ming
- Lab of Ecological and Environmental Engineering, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China; Collaborative Innovation Center for Sustainable Pig Production, Wuhan 430070, China
| | - Wenbing Zhou
- Lab of Ecological and Environmental Engineering, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China; Collaborative Innovation Center for Sustainable Pig Production, Wuhan 430070, China.
| | - Naidong Xiao
- Lab of Ecological and Environmental Engineering, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China; Collaborative Innovation Center for Sustainable Pig Production, Wuhan 430070, China
| | - Jianbo Cai
- Lab of Ecological and Environmental Engineering, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China; Collaborative Innovation Center for Sustainable Pig Production, Wuhan 430070, China
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Jiang C, Zhou S, Li C, Yue F, Zheng L. Properties and mechanism of Cr(VI) removal by a ZnCl 2-modified sugarcane bagasse biochar-supported nanoscale iron sulfide composite. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:26889-26900. [PMID: 36372858 DOI: 10.1007/s11356-022-24126-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Accepted: 11/05/2022] [Indexed: 06/16/2023]
Abstract
A ZnCl2-modified biochar-supported nanoscale iron sulfide composite (FeS-ZnBC) was successfully prepared to address the easy oxidization of FeS and enhance Cr(VI) removal from water. The material was characterized by SEM, XRD, FTIR, and XPS. The effects of FeS:ZnBC mass ratio, FeS-ZnBC dosage, solution pH, initial Cr(VI) concentration, and reaction time on the adsorption performance were investigated. The results revealed that the optimum adsorption capacity of FeS-ZnBC (FeS:ZnBC = 1:2) for Cr(VI) was 264.03 mg/g at 298 K (pH = 2). A Box-Behnken design (BBD) was applied to optimize the input variables that affected the adsorption of Cr(VI) solution. The results revealed that the highest removal (99.52%) of Cr(VI) solution was achieved with a Cr(VI) initial concentration of 150.59 mg/L, FeS-ZnBC adsorbent dosage of 2 g/L, and solution pH of 2. The sorption kinetics could be interpreted using a pseudo-second-order kinetic model. The isotherms were simulated using the Redlich-Peterson isotherm model, indicating that Cr(VI) removal by the FeS-ZnBC composites was a hybrid chemical reaction-sorption process. The main mechanisms of Cr(VI) removal by FeS-ZnBC were adsorption, chemical reduction, and complexation. This study demonstrated that FeS-ZnBC has potential application prospects in Cr(VI) removal.
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Affiliation(s)
- Chunlu Jiang
- School of Resources and Environmental Engineering, Anhui Province Engineering Laboratory for Mine Ecological Remediation, Anhui University, Hefei, 230601, Anhui, China.
- Anhui University, No. 111 Jiulong Road, Hefei, Anhui Province, China.
| | - Shijia Zhou
- School of Resources and Environmental Engineering, Anhui Province Engineering Laboratory for Mine Ecological Remediation, Anhui University, Hefei, 230601, Anhui, China
| | - Chang Li
- School of Resources and Environmental Engineering, Anhui Province Engineering Laboratory for Mine Ecological Remediation, Anhui University, Hefei, 230601, Anhui, China
| | - Fengdie Yue
- School of Resources and Environmental Engineering, Anhui Province Engineering Laboratory for Mine Ecological Remediation, Anhui University, Hefei, 230601, Anhui, China
| | - Liugen Zheng
- School of Resources and Environmental Engineering, Anhui Province Engineering Laboratory for Mine Ecological Remediation, Anhui University, Hefei, 230601, Anhui, China
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6
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Fu S, Di J, Guo X, Dong Y, Bao S, Li H. Preparation of lignite-loaded nano-FeS and its performance for treating acid Cr(VI)-containing wastewater. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:3351-3366. [PMID: 35947258 DOI: 10.1007/s11356-022-22411-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 08/01/2022] [Indexed: 06/15/2023]
Abstract
In this study, lignite-loaded nano-FeS (nFeS@Lignite) was successfully prepared by ultrasonic precipitation, and its potential for treating acid Cr(VI)-containing wastewater was explored. The results showed that the 40--80-nm rod-shaped nFeS was successfully loaded onto lignite particles, and the maximum adsorption capacity of Cr(VI) by nFeS@Lignite reached 33.08 mg∙g-1 (reaction time = 120 min, pH = 4, temperature = 298.15 K). The adsorption process of Cr(VI) by nFeS@Lignite fitted the pseudo-second-order model and the Langmuir isotherm model, and thermodynamic results showed that the adsorption process was an endothermic process with an adsorption enthalpy of 28.0958 kJ·mol-1. The inhibition intensity of coexisting anions on Cr(VI) removal was in the order of PO43- > NO3- > SO42- > Cl-, and the increase of ionic strength resulted in more pronounced inhibition. Electrostatic adsorption, reduction, and precipitation were synergistically engaged in the adsorption of Cr(VI) by nFeS@Lignite, among which reduction played a major role. The characterization results showed that Fe2+, S2-, and Cr(VI) were converted to FeOOH, S8, SO42-, Fe2O3, Cr2O3, and Fe(III)-Cr(III) complexes. This research demonstrates that nFeS@Lignite is a good adsorbent with promising potential for application in the remediation of heavy metal-contaminated wastewater.
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Affiliation(s)
- Saiou Fu
- College of Civil Engineering, Liaoning Technical University, Fuxin, 123000, China
| | - Junzhen Di
- College of Civil Engineering, Liaoning Technical University, Fuxin, 123000, China.
| | - Xuying Guo
- College of Science, Liaoning Technical University, Fuxin, 123000, China
| | - Yanrong Dong
- College of Civil Engineering, Liaoning Technical University, Fuxin, 123000, China
| | - Sihang Bao
- College of Mining, Liaoning Technical University, Fuxin, 123000, China
| | - Hanzhe Li
- College of Civil Engineering, Liaoning Technical University, Fuxin, 123000, China
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Soares BC, Abilio TE, José JC, Labuto G, Carrilho ENVM. Removal of Cr(VI) from water by in natura and magnetic nanomodified hydroponic lettuce roots. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:8822-8834. [PMID: 35809173 DOI: 10.1007/s11356-022-21755-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Accepted: 06/26/2022] [Indexed: 06/15/2023]
Abstract
Biosorption is a viable and environmentally friendly process to remove pollutants and species of commercial interest. Biological materials are employed as adsorbents for the retention, removal, or recovery of potentially toxic metals from aqueous matrices. Hexavalent chromium is a potential contaminant commonly used in galvanoplasty and exhibits concerning effects on humans and the environment. The present work used in natura lettuce root (LR) and nanomodified lettuce root (LR-NP) for Cr(VI) adsorption from water medium. The nanomodification was performed by coprecipitation of magnetite nanoparticles on LR. All materials were morphologically and chemically characterized. The conditions used in removing Cr(VI) were determined by evaluating the pH at the point of zero charge (pHPZC = 5.96 and 6.50 for LR and LR-NP, respectively), pH, kinetics, and sorption capacity in batch procedures. The maximum sorption capacity of these materials was reached at pH 1.0 and 30 min of adsorbent-adsorbate contact time. The pseudo-second-order kinetic equation provided the best adjustments with r2 0.9982 and 0.9812 for LR and LR-NP, respectively. Experimental sorption capacity (Qexp) results were 4.51 ± 0.04 mg/g, 2.48 ± 0.57 mg/g, and 3.84 ± 0.08 mg/g for LR, NP, and LR-NP, respectively, at a 10 g/L adsorbent dose. Six isothermal models (Langmuir, Freundlich, Sips, Temkin, DR, and Hill) fit the experimental data to describe the adsorption process. Freundlich best fit the experimental data suggesting physisorption. Despite showing slightly lower Qexp than LR, LR-NP provides a feasible manner to remove the Cr(VI)-containing biosorbent from the medium after sorption given its magnetic characteristic.
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Affiliation(s)
- Beatriz Caliman Soares
- Laboratory of Polymeric Materials and Biosorbents, Universidade Federal de São Carlos, Araras, SP, 13600-970, Brazil
| | - Thais Eduarda Abilio
- Laboratory of Polymeric Materials and Biosorbents, Universidade Federal de São Carlos, Araras, SP, 13600-970, Brazil
| | - Julia Cristina José
- Laboratory of Polymeric Materials and Biosorbents, Universidade Federal de São Carlos, Araras, SP, 13600-970, Brazil
| | - Geórgia Labuto
- Departamento de Química, Universidade Federal de São Paulo, Diadema, SP, 09913-030, Brazil
- Laboratory of Integrated Sciences, Universidade Federal de São Paulo, Diadema, SP, 09913-030, Brazil
| | - Elma Neide Vasconcelos Martins Carrilho
- Laboratory of Polymeric Materials and Biosorbents, Universidade Federal de São Carlos, Araras, SP, 13600-970, Brazil.
- Departamento de Ciências da Natureza, Universidade Federal de São Carlos, Matemática e Educação, Araras, SP, 13600-970, Brazil.
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Raj V, Chauhan MS, Pal SL. Potential of sugarcane bagasse in remediation of heavy metals: A review. CHEMOSPHERE 2022; 307:135825. [PMID: 35948091 DOI: 10.1016/j.chemosphere.2022.135825] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 07/19/2022] [Accepted: 07/22/2022] [Indexed: 06/15/2023]
Abstract
Presence of heavy metal (HM) ions in wastewater have emerged as among the most prominent issues for improving water quality and reducing it's consequences for the environment, animal and public health. This paper mainly focuses on the remediation of HM ions from wastewater utilizing the relatively inexpensive and widely accessible agricultural waste-Sugarcane Bagasse (SCB). For this, a brief understanding of HMs was discussed (by understanding the sources and toxicity of HM, advantages and shortcomings of conventional processes). Apart from that, to understand the potential of SCB, this review would provide vital information on employing SCB biosorbent in natural and modified forms for HM removal. Therefore, various ways of SCB modifications (including physical, chemical, and composite formation), essential optimal operational conditions (solution pH, dosage of biosorbent, initial metal concentration, contact time, agitation speed, temperature, suitable isotherm and kinetic model) and involving adsorption mechanism were also studied. Finally, significant study gaps were identified to facilitate future research since SCB has been confirmed as a potential bio-adsorbent for removing HM ions.
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Affiliation(s)
- Vinay Raj
- Department of Civil Engineering, Maulana Azad National Institute of Technology, Bhopal, 462003, Madhya Pradesh, India.
| | - Mrityunjay Singh Chauhan
- Department of Civil Engineering, Maulana Azad National Institute of Technology, Bhopal, 462003, Madhya Pradesh, India.
| | - Sunder Lal Pal
- Department of Chemical Engineering, Maulana Azad National Institute of Technology, Bhopal, 462003, Madhya Pradesh, India.
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de Freitas DA, Barbosa JA, Labuto G, Nocelli RCF, Carrilho ENVM. Removal of the pesticide thiamethoxam from sugarcane juice by magnetic nanomodified activated carbon. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:79855-79865. [PMID: 34997927 PMCID: PMC8742164 DOI: 10.1007/s11356-021-18484-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Accepted: 12/29/2021] [Indexed: 06/14/2023]
Abstract
The removal of the neonicotinoid and systemic pesticide thiamethoxam (TMX) from water and sugarcane juice by magnetic nanomodified activated carbon (AC-NP) is proposed. This adsorbent was synthesized and characterized by FTIR, XRD, and SEM, and TMX was quantified by high-performance liquid chromatography coupled to a diode array detector (HPLC-DAD). The AC-NP was efficiently synthesized using a co-precipitation method and the impregnation of magnetite (NP) in the activated carbon (AC) was assessed by the crystalline planes found in the AC-NP structure shown in the XRD diffractograms. The AC-NP FTIR analysis also indicated predominant bands of Fe-O stretching of the magnetite at 610-570 cm-1. Functional groups in AC and AC-NP were identified by absorption bands at 3550 and 1603 cm-1, characteristic of O-H and C = C, respectively. The TMX adsorption kinetics in sugarcane juice was the pseudo-second-order type with r2 = 0.9999, indicating a chemical adsorption process. The experimental sorption capacity (SCexp) for both TMX (standard) and TMX-I (insecticide) by AC-NP were 13.44 and 42.44 mg/g, respectively. Seven non-linear isotherm models (Langmuir, Freundlich, Dubinin-Radushkevich, Toth, Hill, Sips, and Redlich-Peterson) were fitted to the experimental adsorption data of TMX and TMX-I by AC-NP. Considering the standard error (SE), Freundlich, Langmuir, and Sips were the most appropriate models to describe the TMX adsorption, and Hill's best adjusted to TMX-I experimental data. The chromatographic method was highly satisfactory due to its high selectivity and recovery (91-103%). The efficiency of AC-NP in the sorption of TMX was confirmed by the excellent values of SCexp and sorption kinetics.
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Affiliation(s)
- Driélle Aparecida de Freitas
- Laboratory of Polymeric Materials and Biosorbents, Federal University of São Carlos, Araras, SP, 13604-900, Brazil
| | - Júlia Adorno Barbosa
- Laboratory of Polymeric Materials and Biosorbents, Federal University of São Carlos, Araras, SP, 13604-900, Brazil
| | - Geórgia Labuto
- Laboratory of Integrated Sciences, Federal University of São Paulo, Diadema, SP, 09972-270, Brazil
- Departamento de Química, Universidade Federal de São Paulo, Diadema, SP, 09913-030, Brazil
| | | | - Elma Neide Vasconcelos Martins Carrilho
- Laboratory of Polymeric Materials and Biosorbents, Federal University of São Carlos, Araras, SP, 13604-900, Brazil.
- Departamento de Ciências da Natureza, Matemática e Educação, Universidade Federal de São Carlos, Araras, SP, 13604-900, Brazil.
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Zhang C, Zhao J, Zhao M. Adsorption of hexavalent chromium from aqueous solution by polyamidoamine dendrimer polycondensate. RESEARCH ON CHEMICAL INTERMEDIATES 2022. [DOI: 10.1007/s11164-022-04789-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Narayanasamy S, Sundaram V, Sundaram T, Vo DVN. Biosorptive ascendency of plant based biosorbents in removing hexavalent chromium from aqueous solutions - Insights into isotherm and kinetic studies. ENVIRONMENTAL RESEARCH 2022; 210:112902. [PMID: 35167851 DOI: 10.1016/j.envres.2022.112902] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 01/22/2022] [Accepted: 02/04/2022] [Indexed: 06/14/2023]
Abstract
Chromium is a toxic heavy metal prevalent in higher levels in aqueous matrices owing to industrial applications. Whilst being a key player in industries, the environmental issues caused by Cr(VI) are highly deleterious. Adsorptive remediation is found to be an effective method adopted by researchers in the past decades for Cr(VI) removal from water streams in which variety of naturally available biosorbents have been explored for handling Cr(VI). This review article briefly sketches up the biosorptive potential of plant-based biosorbents used in raw and chemically modified form for the optimum exclusion of Cr(VI) from aqueous sources. Mechanisms and kinetic behavior of the removal process are also discussed. pH of the solution and initial Cr(VI) concentration were found to be the key parameters in Cr removal. The mechanism of Cr removal from aqueous systems was elucidated to be either adsorption or adsorption-coupled-reduction. After precise discussion on various plant-based biosorbents with their maximum adsorption capacities, desorption and regeneration potential, it is perceived that plant-based biosorbents are superior options for Cr(VI) elimination from aqueous streams.
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Affiliation(s)
- Saranya Narayanasamy
- Department of Biotechnology, Saveetha School of Engineering, SIMATS, Chennai, Tamil Nadu, India
| | - Vickram Sundaram
- Department of Biotechnology, Saveetha School of Engineering, SIMATS, Chennai, Tamil Nadu, India
| | - Thanigaivel Sundaram
- Department of Biotechnology, Saveetha School of Engineering, SIMATS, Chennai, Tamil Nadu, India.
| | - Dai-Viet N Vo
- Institute of Environmental Technology and Sustainable Development, Nguyen Tat Thanh University, Ho Chi Minh City, 755414, Viet Nam.
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Chu KH, Debord J, Harel M, Bollinger JC. Mirror, Mirror on the Wall, Which Is the Fairest of Them All? Comparing the Hill, Sips, Koble–Corrigan, and Liu Adsorption Isotherms. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c00507] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Khim Hoong Chu
- Honeychem Research, Newtown, Wellington 6021, New Zealand
- Department of Chemical Engineering, University of Malaya, Kuala Lumpur, 50603, Malaysia
| | - Jean Debord
- Service de Pharmacologie-Toxicologie, Hôpital Dupuytren, Limoges, 87042, France
| | - Michel Harel
- Université de Limoges, Laboratoire Vie-Santé UR 24 134, Faculté de Médecine, Limoges, 87025, France
- Institut de Mathématiques de Toulouse, UMR CNRS 5219, Toulouse, 31062, France
| | - Jean-Claude Bollinger
- Université de Limoges, Laboratoire E2Lim, Faculté des Sciences & Techniques, Limoges, 87060, France
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Sugarcane cellulose-based composite hydrogel enhanced by g-C 3N 4 nanosheet for selective removal of organic dyes from water. Int J Biol Macromol 2022; 205:37-48. [PMID: 35181325 DOI: 10.1016/j.ijbiomac.2022.02.035] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2021] [Revised: 12/17/2021] [Accepted: 02/08/2022] [Indexed: 11/24/2022]
Abstract
The effective removal of toxic dyes from aqueous solution is of great significance for environmental protection. Herein, an eco-friendly sugarcane cellulose (SBC)/sodium carboxymethylcellulose (CMC-Na) adsorbent reinforced with carbon nitride (g-C3N4) was successfully prepared via a facile sol-gel method. The resulting gel-like adsorbent or composite hydrogel was comprehensively characterized with FTIR, SEM, EDS, TGA analysis. The adsorption behaviors of the adsorbent in the removal of methylene blue (MB) were systematically investigated. Results showed the pseudo-second-order kinetic model and Langmuir model described adsorption process accurately with the maximum adsorption capacity of 362.3 mg g-1, indicating that adsorption behavior is a monolayer chemical adsorption. Moreover, the composited hydrogel displayed excellent adsorption selectivity on MB/MO or MB/RhB mixed dyes. In addition, adsorbent showed great stability and reusability with almost no loss in adsorption capacity after 7 cycles. Due to the facile preparation process and outstanding mechanical properties, as well as high recyclability, g-C3N4@SBC/CMC has great potential in wastewater treatment.
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Use of experimental design to evaluate the adsorption of chromium (VI) by alginate/polyaniline beads. JOURNAL OF THE SERBIAN CHEMICAL SOCIETY 2022. [DOI: 10.2298/jsc210724104a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Low-cost decorated sodium alginate beads with polyaniline (Alg@PANI beads) were easily prepared using a cross-linking method, and employed for the adsorption of Cr(VI) from aqueous solutions. The effect of several influencing parameters, including temperature, contact time, Cr(VI) concentration, and adsorbent dosage, was investigated and optimized using central composite design (CCD) under response surface methodology (RSM). The analysis of variance (ANOVA) of the quadratic model and the analyzed model revealed that the models were statistically significant, with a low P-value (<0.0001) and a high correlation coefficient value (R2 = 0.93). The optimum parameters for total adsorption were as follows: adsorbent dose 0.027 g, pH 2, contact time 45 min, temperature 38?C, and Cr(VI) concentration 29.24 ppm. The findings of this study indicate that the prepared Alg@PANI beads could be effectively used to remove Cr(VI) ions from aqueous solutions.
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