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Oliveira VH, Díez S, Dolbeth M, Coelho JP. Restoration of degraded estuarine and marine ecosystems: A systematic review of rehabilitation methods in Europe. JOURNAL OF HAZARDOUS MATERIALS 2024; 469:133863. [PMID: 38430591 DOI: 10.1016/j.jhazmat.2024.133863] [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: 12/13/2023] [Revised: 01/25/2024] [Accepted: 02/21/2024] [Indexed: 03/05/2024]
Abstract
This article provides a comprehensive study of ecosystem rehabilitation methods widely used in the 21st century, focusing on Europe. The review covers the evolution and trends in scientific article publication, identification of European countries demonstrating high publication outputs, collaboration patterns, leading journals, and thematic areas. Additionally, it examines primary stressors in European aquatic ecosystems, and different methods and treatments commonly employed for remediation purposes. The analysis of selected articles revealed a significant increase in studies over time, driven by public awareness and financial incentives from national, European and global organizations. Italy, Portugal and Spain were the leading countries in degraded ecosystem rehabilitation studies, mainly focusing on remediating contaminated areas where metals were identified as the primary stressor (chemical pollution). Chemical remediation method emerged as the most used, closely followed by biological remediation method, which have gained prominence in recent years due to their ecological, economic, and social combined benefits. Furthermore, recent studies demonstrate a growing trend towards the combined use of more than one treatment/method to rehabilitate ecosystems, particularly with biological treatments. This combined approach has the potential for synergistic effects in achieving more effective rehabilitation and their sustainability in the long term, thus, a focus for future research.
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Affiliation(s)
- Vítor H Oliveira
- ECOMARE - Laboratory for Innovation and Sustainability of Marine Biological Resources, CESAM - Centre for Environmental and Marine Studies, Department of Biology, University of Aveiro, Estrada do Porto de Pesca Costeira, 3830-565 Gafanha da Nazaré, Portugal.
| | - Sergi Díez
- Environmental Chemistry Department, Institute of Environmental Assessment and Water Research, IDAEA-CSIC, E-08034 Barcelona, Spain
| | - Marina Dolbeth
- CIIMAR - Interdisciplinary Centre of Marine and Environmental Research, Novo Edifício Do Terminal de Cruzeiros Do Porto de Leixões, Avenida General Norton de Matos S/N, 4450-208 Matosinhos, Portugal
| | - João P Coelho
- ECOMARE - Laboratory for Innovation and Sustainability of Marine Biological Resources, CESAM - Centre for Environmental and Marine Studies, Department of Biology, University of Aveiro, Estrada do Porto de Pesca Costeira, 3830-565 Gafanha da Nazaré, Portugal
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Deng X, Li J, Du D, Wang T. Manufacturing non-sintered ceramsite from dredged sediment, steel slag, and fly ash for lightweight aggregate: production and characterization. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:15078-15090. [PMID: 38286931 DOI: 10.1007/s11356-024-32044-3] [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: 09/06/2023] [Accepted: 01/13/2024] [Indexed: 01/31/2024]
Abstract
Green and low-carbon materialization for dredged sediment (DS) is limited due to its low pozzolanic activity. In this study, a novel DS-based non-sintered lightweight aggregate (LWA) is developed by steel slag (SS) and fly ash (FA) activation. Process optimization is performed by the response surfaces, and the basic properties and characterization of the optimal product are investigated. Results indicated that the optimized design ceramic aggregate (ODCA) was prepared as follows: raw pellets comprising of 59.2% DS, 5% SS, 35.8% FA, 5% MK, 5% H2O2, and 2‰ foam stabilizer were activated by alkali activator (1.5 weight ratio of 14 M NaOH to water glass) and then cured at 80 °C and 95% humidity for 24 h. The basic and environmental performances of ODCA were in accordance with standards, whose bulk density was as low as 665.8 kg/m3, the high cylinder compressive strength was 6.143 MPa, and leaching concentrations of heavy metals were controllable. The regulation mechanism of LWA performances could be summarized as follows. SS and FA additives played the role for the mechanical strength enhancement and passivation of heavy metals, which promoted the formation of sillimanite, chabazite, and C-S-H / C-S-A-H gels in ODCA. The bulk density of ODCA was greatly reduced by H2O2 addition, where ODCA had an open-pore structure with a median pore size of 4969.75 nm. Note that C-S-H/C-S-A-H were the key hydration products to give ODCA light density and high mechanical strength, simultaneously.
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Affiliation(s)
- Xiaotong Deng
- School of Environmental Engineering, Wuhan Textile University, Wuhan, 430073, China
| | - Jinping Li
- School of Environmental Engineering, Wuhan Textile University, Wuhan, 430073, China.
- Engineering Research Centre for Clean Production of Textile Dyeing and Printing, Ministry of Education, Wuhan Textile University, Wuhan, 430073, China.
| | - Dan Du
- School of Environmental Engineering, Wuhan Textile University, Wuhan, 430073, China
| | - Teng Wang
- School of Environmental Engineering, Wuhan Textile University, Wuhan, 430073, China
- Engineering Research Centre for Clean Production of Textile Dyeing and Printing, Ministry of Education, Wuhan Textile University, Wuhan, 430073, China
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Yang W, Zhang Y, Zheng J, Liu L, Si M, Liao Q, Yang Z, Zhao F. Migration of spent grain-modified colloidal ferrihydrite: Implications for the in situ stabilization of arsenic, lead, and cadmium in co-contaminated soil. CHEMOSPHERE 2023; 344:140310. [PMID: 37775058 DOI: 10.1016/j.chemosphere.2023.140310] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 08/28/2023] [Accepted: 09/25/2023] [Indexed: 10/01/2023]
Abstract
The increase of metal mining, processing, and smelting activities has precipitated a substantial escalation in the contamination of soil by heavy metals. Ferrihydrite (FH) has been commonly used as an amendment for the immobilization of heavy metals in contaminated soil. However, FH suffers from drawbacks such as agglomeration and nonmigratory characteristics, which limit its practical application in soil remediation. Herein, a novel spent grain-modified ferrihydrite (FH-SG) colloidal system was developed, and the FH-SG transport mechanisms in the soil medium were fully studied, focusing in particular on the simultaneous in situ stabilization of arsenic (As), lead (Pb), and cadmium (Cd) in co-contaminated soil. The results showed that the stabilization rates of the FH-SG material reached 94.66%, 96.12%, and 95.52% for water-soluble As, Pb, and Cd, respectively, and 72.22%, 49.39%, and 25.30% for bioavailable As, Pb, and Cd, respectively. The FH-SG material demonstrates notable migration properties in porous media. Theoretical calculation results of a single collector show that the migration deposition of FH-SG material in media is primarily governed by its inherent diffusion characteristics with minimal influence by gravitational forces and media interception. It is noteworthy that the maximum migration distance in quartz sand and soil media with different particle sizes can reach 2.07-2.92 m and 0.78-1.08 m, respectively. Altogether, our findings clearly demonstrate that FH-SG exhibits better stabilization and migration than those of FH alone and most proposed FH colloidal systems. The FH-SG colloidal system holds significant promise for the remediation of various kinds of complex polluted soil.
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Affiliation(s)
- Weichun Yang
- Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution (CNERC-CTHMP), School of Metallurgy and Environment, Central South University, Changsha 410083, Hunan, China
| | - Yujia Zhang
- Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution (CNERC-CTHMP), School of Metallurgy and Environment, Central South University, Changsha 410083, Hunan, China; Zhejiang Huayou Cobalt Co., Ltd., Quzhou 314599, Zhejiang, China
| | - Junhao Zheng
- Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution (CNERC-CTHMP), School of Metallurgy and Environment, Central South University, Changsha 410083, Hunan, China
| | - Lu Liu
- Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution (CNERC-CTHMP), School of Metallurgy and Environment, Central South University, Changsha 410083, Hunan, China
| | - Mengying Si
- Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution (CNERC-CTHMP), School of Metallurgy and Environment, Central South University, Changsha 410083, Hunan, China
| | - Qi Liao
- Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution (CNERC-CTHMP), School of Metallurgy and Environment, Central South University, Changsha 410083, Hunan, China
| | - Zhihui Yang
- Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution (CNERC-CTHMP), School of Metallurgy and Environment, Central South University, Changsha 410083, Hunan, China
| | - Feiping Zhao
- Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution (CNERC-CTHMP), School of Metallurgy and Environment, Central South University, Changsha 410083, Hunan, China.
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Kumar V, Rout C, Singh J, Saharan Y, Goyat R, Umar A, Akbar S, Baskoutas S. A review on the clean-up technologies for heavy metal ions contaminated soil samples. Heliyon 2023; 9:e15472. [PMID: 37180942 PMCID: PMC10172878 DOI: 10.1016/j.heliyon.2023.e15472] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 03/19/2023] [Accepted: 04/11/2023] [Indexed: 05/16/2023] Open
Abstract
The soil contamination with heavy metal ions is one of the grave intricacies faced worldwide over the last few decades by the virtue of rapid industrialization, human negligence and greed. Heavy metal ions are quite toxic even at low concentration a swell as non-biodegradable in nature. Their bioaccumulation in the human body leads to several chronic and persistent diseases such as lung cancer, nervous system break down, respiratory problems and renal damage etc. In addition to this, the increased concentration of these metal ions in soil, beyond the permissible limits, makes the soil unfit for further agricultural use. Hence it is our necessity, to monitor the concentration of these metal ions in the soil and water bodies and adopt some better technologies to eradicate them fully. From the literature survey, it was observed that three main types of techniques viz. physical, chemical, and biological were employed to harness the heavy metal ions from metal-polluted soil samples. The main goal of these techniques was the complete removal of the metal ions or the transformation of them into less hazardous and toxic forms. Further the selection of the remediation technology depends upon different factors such as process feasibility/mechanism of the process applied, nature and type of contaminants, type and content of the soil, etc. In this review article, we have studied in detail all the three technologies viz. physical, chemical and biological with their sub-parts, mechanism, pictures, advantages and disadvantages.
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Affiliation(s)
- Vikas Kumar
- Department of Civil Engineering, Maharishi Markandeshwar (Deemed to Be University), Mullana, Ambala, 133203, Haryana, India
| | - Chadetrik Rout
- Department of Civil Engineering, Maharishi Markandeshwar (Deemed to Be University), Mullana, Ambala, 133203, Haryana, India
| | - Joginder Singh
- Department of Chemistry, Maharishi Markandeshwar (Deemed to Be University), Mullana, Ambala, 133203, Haryana, India
- Corresponding author.
| | - Yajvinder Saharan
- Department of Chemistry, Maharishi Markandeshwar (Deemed to Be University), Mullana, Ambala, 133203, Haryana, India
| | - Rohit Goyat
- Department of Chemistry, Maharishi Markandeshwar (Deemed to Be University), Mullana, Ambala, 133203, Haryana, India
| | - Ahmad Umar
- Department of Chemistry, Faculty of Science and Arts, And Promising Centre for Sensors and Electronic Devices (PCSED), Najran University, Najran-11001, Kingdom of Saudi Arabia
- Department of Materials Science and Engineering, The Ohio State University, Columbus, OH 43210, USA
- Corresponding author. Department of Chemistry, Faculty of Science and Arts, and Promising Centre for Sensors and Electronic Devices (PCSED), Najran University, Najran-11001, Kingdom of Saudi Arabia.
| | - Sheikh Akbar
- Department of Materials Science and Engineering, The Ohio State University, Columbus, OH 43210, USA
| | - S. Baskoutas
- Department of Materials Science, University of Patras, Patras, Greece
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Rehman ZU, Junaid MF, Ijaz N, Khalid U, Ijaz Z. Remediation methods of heavy metal contaminated soils from environmental and geotechnical standpoints. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 867:161468. [PMID: 36627001 DOI: 10.1016/j.scitotenv.2023.161468] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2022] [Revised: 01/01/2023] [Accepted: 01/04/2023] [Indexed: 06/17/2023]
Abstract
Heavy metal contaminated soil (HMCS) threatens world health and sustainable growth, owing to which numerous remediation methods have been devised. Meanwhile, environmental sustainability and geotechnical serviceability of remediated HMCS are important considerations for reusing such soils and achieving sustainable development goals; therefore, these considerations are critically reviewed in this article. For this purpose, different onsite and offsite remediation methods are evaluated from environmental and geotechnical standpoints. It was found that each remediation method has its own merits and limitations in terms of environmental sustainability and geotechnical serviceability; generally, sustainable green remediation (SGR) and cementation are regarded as effective solutions for the problems related to the former and latter, respectively. Overall, the impact of remediation techniques on the environment and geotechnical serviceability is a developing area of study that calls for increased efforts to improve the serviceability, sustainability, reusability and environmental friendliness of the remediated HMCS.
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Affiliation(s)
- Zia Ur Rehman
- School of Civil Engineering and Surveying, University of Portsmouth, Portland Building, Portland Street, Portsmouth PO1 3AH, United Kingdom.
| | - Muhammad Faisal Junaid
- Department of Materials Engineering and Physics, Faculty of Civil Engineering, Slovak University of Technology, Bratislava 810 05, Slovakia; College of Civil and Transportation Engineering, Shenzhen University, Shenzhen 518060, PR China.
| | - Nauman Ijaz
- Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, College of Civil Engineering, Tongji University, Shanghai 200092, PR China.
| | - Usama Khalid
- Geotechnical Engineering Department, National Institute of Transportation (NIT), National University of Sciences and Technology (NUST), Risalpur 23200, Pakistan.
| | - Zain Ijaz
- Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, College of Civil Engineering, Tongji University, Shanghai 200092, PR China.
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Wang D, Wu C, Zong Z, Ye J, Wu Q, Li R, Zhou B, Xu H, Cai D. Carbon Nanotubes-Based Fuel Cell for Cr(VI) Removal and Electricity Generation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:9021-9029. [PMID: 35834193 DOI: 10.1021/acs.langmuir.2c01472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
A fuel cell, an energy transducer, can convert chemical energy into electrical energy. In this work, graphite felt (GF) loaded with polypyrrole (PPy) and carboxylic carbon nanotubes (CNTs-COOH) was used as a cathode (GF/PPy/CNTs-COOH) in a double-chamber nonbiofuel cell (D-nBFC) to remove Cr(VI) efficiently. Therein, Na2S2O3 in an alkaline solution and Cr(VI) in a strongly acidic solution were employed as anode and cathode solutions, respectively. An agar salt bridge, consisting of saturated KCl solution, was used to transport ions between the anode and cathode. This system suggested that the removal efficiency of Cr(VI) could reach 99.6%. The maximum current, power, and power density could achieve 136.8 μA, 18.7 μW, and 20.8 mW/m2 at 90 min, respectively. Additionally, GF/PPy/CNTs-COOH also had good electrocatalytic stability and reusability after four cycles, which played an important role in the development of the D-nBFC system. Therefore, this study provides an environmentally friendly and efficient method to remove Cr(VI) and generate electricity simultaneously.
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Affiliation(s)
- Dongfang Wang
- College of Environmental Science and Engineering, Donghua University, Shanghai 201620, People's Republic of China
| | - Chuanxuan Wu
- College of Environmental Science and Engineering, Donghua University, Shanghai 201620, People's Republic of China
| | - Zhiqiang Zong
- College of Environmental Science and Engineering, Donghua University, Shanghai 201620, People's Republic of China
| | - Jinghong Ye
- College of Environmental Science and Engineering, Donghua University, Shanghai 201620, People's Republic of China
| | - Qingchuan Wu
- Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, Anhui 230031, People's Republic of China
| | - Ruohan Li
- College of Environmental Science and Engineering, Donghua University, Shanghai 201620, People's Republic of China
| | - Benji Zhou
- College of Environmental Science and Engineering, Donghua University, Shanghai 201620, People's Republic of China
| | - He Xu
- College of Environmental Science and Engineering, Donghua University, Shanghai 201620, People's Republic of China
| | - Dongqing Cai
- College of Environmental Science and Engineering, Donghua University, Shanghai 201620, People's Republic of China
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Inoculation with the pH Lowering Plant Growth Promoting Bacterium Bacillus sp. ZV6 Enhances Ni Phytoextraction by Salix alba from a Ni-Polluted Soil Receiving Effluents from Ni Electroplating Industry. SUSTAINABILITY 2022. [DOI: 10.3390/su14126975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Soil contamination with Ni poses serious ecological risks to the environment. Several members of the Salix genus have the ability to accumulate high concentrations of Ni in their aerial parts, and thus can be used for the remediation of Ni-contaminated soils. Interestingly, the efficacy of Ni phytoextraction by Salix may be improved by the acidification of rhizosphere with rhizosphere acidifying bacterial strains. Therefore, the aim of this study was to assess the efficacy of bacterial strain Bacillus sp. ZV6 in the presence of animal manure (AM) and leaf manure (LM) for enhancing the bioavailability of Ni in the rhizosphere of Salix alba via reducing the pH of rhizosphere and resultantly, enhanced phytoextraction of Ni. Inoculation of Ni-contaminated soil with strain ZV6 significantly increased plant growth as well as Ni uptake by alba. It was found that the addition of AM and LM resulted into a significant increase in plant growth and Ni uptake by alba in Ni-contaminated soil inoculated with ZV6 stain. However, the highest improvements in diethylene triamine penta-acetic acid (DTPA) extractable Ni (10%), Ni removal from soil (54%), Ni bioconcentration factor (26%) and Ni translocation factor (13%) were detected in the soil inoculated with ZV6 along with the addition of LM, compared to control. Similarly, the enhancements in microbial biomass (92%), bacterial count (348%), organic carbon (organic C) (57%) and various enzymatic activities such as urease (56%), dehydrogenase (32%), β-glucosidase (53%), peroxidase (26%) and acid phosphatase (38%) were also significantly higher in the soil inoculated with ZV6 along with the addition of LM. The findings of this study suggest that the inoculation of Ni-contaminated soils with rhizosphere acidifying bacteria can effectively improve Ni phytoextraction and, in parallel, enhance soil health.
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Wang F, Wang H, Zhao Z, Dong W, Wu Z, Zhang S, Li W, Wu X. Simultaneous elimination of black-odor and stabilization of heavy metals in contaminated sediment using calcium peroxide/hydroxyapatite: Microbial responses and ecotoxicological effects. JOURNAL OF HAZARDOUS MATERIALS 2022; 429:128298. [PMID: 35066224 DOI: 10.1016/j.jhazmat.2022.128298] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Revised: 01/03/2022] [Accepted: 01/15/2022] [Indexed: 06/14/2023]
Abstract
In this study, laboratory-scale experiments were conducted to investigate the feasibility of the combined use of calcium peroxide and hydroxyapatite (CaO2/HAP) for simultaneous black-odor sediment remediation and heavy metal stabilization. The ecotoxicological effects of remediated sediment were also evaluated based on biological toxicity. Results showed that CaO2/HAP effectively eliminated the black-odor and simultaneously stabilized heavy metals in the sediment. Under the optimal dosage ratio of CaO2/HAP (1:2), the acid volatile sulfides decreased to approximately 20 mg/kg (dry weight, dw) and oxidation-reduction potential increased from - 165 mV to approximately - 90 mV. The leaching of heavy metals meets the strictest standards (Level I) of the "Technical Specification for Output Disposal of Contaminated Sediment Treatment Plant of River and Lake" (SZDB/Z 236-2017). The indigenous microbial community succession occurred (p < 0.01), Proteobacteria and Firmicutes accounting for 75.54% and 20.19%, respectively, were the predominant bacteria in the remediated sediment. Additionally, CaO2/HAP remediated sediments were safer and more environmentally friendly than raw sediments, and were not biotoxic to the benthic environment (p < 0.01). This study provides new insights into the combined use of the beneficial amendments remediating heavy metal-contaminated black-odor river sediment.
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Affiliation(s)
- Feng Wang
- School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen 518055, PR China
| | - Hongjie Wang
- School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen 518055, PR China; Shenzhen Key Laboratory of Water Resource Utilization and Environmental Pollution Control, Shenzhen 518055, PR China; State Key Lab of Urban Water Resource and Environment, School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen 518055, PR China
| | - Zilong Zhao
- School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen 518055, PR China; Shenzhen Key Laboratory of Water Resource Utilization and Environmental Pollution Control, Shenzhen 518055, PR China.
| | - Wenyi Dong
- School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen 518055, PR China; Shenzhen Key Laboratory of Water Resource Utilization and Environmental Pollution Control, Shenzhen 518055, PR China; State Key Lab of Urban Water Resource and Environment, School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen 518055, PR China
| | - Zijing Wu
- School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen 518055, PR China
| | - Shunli Zhang
- School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen 518055, PR China
| | - Wenting Li
- School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen 518055, PR China
| | - Xinyu Wu
- School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen 518055, PR China
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Sharma KP, Shin M, Awasthi GP, Poudel MB, Kim HJ, Yu C. Chitosan polymer matrix-derived nanocomposite (CuS/NSC) for non-enzymatic electrochemical glucose sensor. Int J Biol Macromol 2022; 206:708-717. [PMID: 35231535 DOI: 10.1016/j.ijbiomac.2022.02.142] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 02/10/2022] [Accepted: 02/23/2022] [Indexed: 12/11/2022]
Abstract
In this study, N and S co-doped chitosan polymer matrix-derived composite (CuS/NSC) was synthesized via a one-step hydrothermal technique using a low-cost copper complex of chitosan polymer. Cyclic voltammetry and chronoamperometry revealed excellent electrocatalytic performance. The glucose sensor exhibited a linear range of 160 μM to 11.76 mM, a low detection limit 2.72 μM and a sensitivity of 13.62 mA mM-1 cm-2 with an excellent linear response. Furthermore, the sensor also displayed selectivity for glucose over potential interfering agents and exhibited a satisfactory recovery percentage using real sample in human serum. The results demonstrate that, CuS/NSC is an efficient nanocomposite material for non-enzymatic glucose sensors and is applicable for glucose detection in biological fluids.
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Affiliation(s)
- Krishna Prasad Sharma
- Department of Energy Storage/Conversion Engineering of Graduate School (BK21 FOUR), Jeonbuk National University, Jeonju, Jeollabuk-do 54896, Republic of Korea
| | - Miyeon Shin
- Department of Energy Storage/Conversion Engineering of Graduate School (BK21 FOUR), Jeonbuk National University, Jeonju, Jeollabuk-do 54896, Republic of Korea
| | - Ganesh Prasad Awasthi
- Division of Convergence Technology Engineering, Jeonbuk National University, Jeonju, Jeollabuk-do 54896, Republic of Korea
| | - Milan Babu Poudel
- Division of Convergence Technology Engineering, Jeonbuk National University, Jeonju, Jeollabuk-do 54896, Republic of Korea
| | - Han Joo Kim
- Division of Convergence Technology Engineering, Jeonbuk National University, Jeonju, Jeollabuk-do 54896, Republic of Korea
| | - Changho Yu
- Department of Energy Storage/Conversion Engineering of Graduate School (BK21 FOUR), Jeonbuk National University, Jeonju, Jeollabuk-do 54896, Republic of Korea; Division of Convergence Technology Engineering, Jeonbuk National University, Jeonju, Jeollabuk-do 54896, Republic of Korea.
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10
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Yue R, Zhang X, Zhong Y, Chen Z, Zhao Y, Wang D, Wang Z, Mao X. Thermal reduction-desorption of cadmium from contaminated soil by a biomass co-pyrolysis process. JOURNAL OF HAZARDOUS MATERIALS 2022; 423:126937. [PMID: 34488096 DOI: 10.1016/j.jhazmat.2021.126937] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 08/01/2021] [Accepted: 08/15/2021] [Indexed: 06/13/2023]
Abstract
Thermal desorption is one of the methods commonly used for the remediation of contaminated soil. However, its suitability for the treatment of widespread Cd-contaminated soil was seldom investigated, because the desorption of Cd was found to be difficult, even at a high heating temperature. In the present study, a biomass co-pyrolysis (BCP) method is proposed for the thermal treatment of Cd-contaminated soil. The results showed that, when the mixture of biomass and contaminated soil was pyrolyzed at ~550 oC, the gaseous pyrolytic products (such as CO and hydrocarbon gases) from the biomass could chemically reduce the Cd(II) into volatile Cd0, thereby allowing the evaporation of vaporized Cd0 from the soil within a short operating time. The BCP method can achieve a highly efficient removal of Cd from the soil samples spiked with a large amount of Cd(II). The remediated soil, containing the remaining biochars, showed a good regreening potential and a significant decrease in Cd bioavailability. It also showed a good performance for the remediation of field soils from four contaminated sites (>92% removal efficiencies), and one of the treated soils could even meet the Cd screening level of agricultural land of China.
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Affiliation(s)
- Rui Yue
- School of Resource and Environmental Sciences, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Wuhan University, Wuhan 430079, China
| | - Xiaona Zhang
- School of Resource and Environmental Sciences, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Wuhan University, Wuhan 430079, China
| | - Yueni Zhong
- School of Resource and Environmental Sciences, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Wuhan University, Wuhan 430079, China
| | - Zhikang Chen
- School of Resource and Environmental Sciences, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Wuhan University, Wuhan 430079, China
| | - Ying Zhao
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Dihua Wang
- School of Resource and Environmental Sciences, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Wuhan University, Wuhan 430079, China
| | - Zhicheng Wang
- School of Resource and Environmental Sciences, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Wuhan University, Wuhan 430079, China
| | - Xuhui Mao
- School of Resource and Environmental Sciences, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Wuhan University, Wuhan 430079, China.
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11
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Miao C, Jiang JY, Liu SJ, Wang YJ, Zhang K. Mechanism analysis of the immobilization of heavy metal ions with the water-soluble polymer: The influence of resin structure and the further adsorption of chelate. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 302:114087. [PMID: 34773780 DOI: 10.1016/j.jenvman.2021.114087] [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: 08/27/2021] [Revised: 10/19/2021] [Accepted: 11/07/2021] [Indexed: 06/13/2023]
Abstract
Polymer materials have become one of the potential materials for remediation of heavy metal (HM) contamination in water and soil. However, the specific advantages of polymers are rarely studied. Water-soluble thiourea formaldehyde resin (WTF) is one of the effective polymer amendments. Through leaching experiments, WTF can stabilize 93.0% of Cd2+ and 99.7% of Cu2+. The results of HM morphology analysis show that after adding WTF, most of the HMs have been transformed into a relatively stable state. For example, in the process of remediation of 6 mg/kg Cd contaminated soil, the proportion of acid-soluble Cd decreased from 56.5% to 12.8%, and the residual state increased from 13.5% to 45.4%. Compared with the resin-free structure, the three-dimensional structure of the resin plays an important role, but the efficiency of precipitation with HMs is doubled. According to the simulation of the adsorption process by Materials Studio, the characterization of the scanning electron microscope-energy dispersive instrument and the results of the adsorption experiment, in the solution, the precipitate formed by WTF and Cd2+ has multilayer adsorption of HMs, and can further adsorb HM by -OH. Soil enzyme activity experiments proved that the risk of secondary pollution by adding WTF is rare, and even WTF can achieve the effect of slow-release nitrogen fertilizer. In the WTF remediation process, the biological toxicity reduction of HMs is result from, on the one hand, the complexation of functional group of WTF; on the other hand, the resin structure of WTF; in addition, multi-layer adsorption and adsorption of end groups in the precipitation formed by WTF and HM. This work provides a theoretical basis for the potential capabilities of water-soluble resins and is beneficial to the design and development of subsequent amendments.
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Affiliation(s)
- Chen Miao
- School of Environmental Science and Engineering, Tianjin University. Address: 135 Yaguan Road, Jinnan District, Tianjin, 300350, China
| | - Jia-Yu Jiang
- School of Environmental Science and Engineering, Tianjin University. Address: 135 Yaguan Road, Jinnan District, Tianjin, 300350, China
| | - She-Jiang Liu
- School of Environmental Science and Engineering, Tianjin University. Address: 135 Yaguan Road, Jinnan District, Tianjin, 300350, China.
| | - Yu-Jing Wang
- School of Environmental Science and Engineering, Tianjin University. Address: 135 Yaguan Road, Jinnan District, Tianjin, 300350, China
| | - Kai Zhang
- Tianjin TEDA Greening Group Co., Ltd., Tianjin, China
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12
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Li X, Yang R, Li H, Yi H, Jing H. Experimental Study on Solidification and Stabilization of Heavy-Metal-Contaminated Soil Using Cementitious Materials. MATERIALS 2021; 14:ma14174999. [PMID: 34501089 PMCID: PMC8434242 DOI: 10.3390/ma14174999] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/01/2021] [Revised: 08/27/2021] [Accepted: 08/30/2021] [Indexed: 11/16/2022]
Abstract
In order to solve the shortcomings of the traditional curing agent in the treatment of composite heavy-metal-contaminated soil with the solidification and stabilization method, a new type of cementing material A was used as a curing agent, and the Pb, Cd, Cu composite heavy-metal-contaminated soil was artificially prepared to carry out an experimental study on solidification and stabilization (SS) restoration by the mechanical properties test, leaching performance test, and microscopic test. The results show that in the range of test dosage, with the increase in the curing agent content, the unconfined compressive strength of the solidified body increased, and the resistance to deformation was enhanced. From the perspective of leaching characteristics, the new curing agent A had an excellent curing effect on the composite heavy-metal-contaminated soil. To achieve safe disposal, a curing agent content of 10% applies only for the soil heavily contaminated by heavy metals. The curing agent A could significantly reduce the content of acid-extractable heavy metals after solidifying the heavy metal Pb, Cd, and Cu composite contaminated soil and effectively converted it into a residue state. The solidified phase contained hydrated products such as calcium silicate hydrate (CSH) and ettringite (AFt). These hydrated products can inhibit the leaching performance of heavy metal ions through adsorption, encapsulation, and ion exchange. The study provides a feasible method and reference for the solidification, restoration, and resource utilization of heavy-metal-contaminated soil in the subgrade.
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13
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Zou K, Wei J, Wang D, Kong Z, Zhang H, Wang H. A novel remediation method of cadmium (Cd) contaminated soil: Dynamic equilibrium of Cd 2+ rapid release from soil to water and selective adsorption by PP-g-AA fibers-ball at low concentration. JOURNAL OF HAZARDOUS MATERIALS 2021; 416:125884. [PMID: 34492822 DOI: 10.1016/j.jhazmat.2021.125884] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 04/07/2021] [Accepted: 04/11/2021] [Indexed: 06/13/2023]
Abstract
The acid-extractable fraction Cd(II) in soil accumulates easily in organisms, migrates and transforms in the ecological environment, which has posed potential health risks to human. This study found that the acid-extractable fraction Cd(II) in soil could be released rapidly into water at very low Cd2+ concentration. Carboxylated polypropylene (PP-g-AA) fibers-ball with high selectivity as adsorbent was used in the Cd(II) contaminated soil-water system. It could remove promptly trace Cd2+ from water even in the presence of interfering metal ions. Moreover, Cd(II) desorbed from soil to water could be continuously adsorbed by PP-g-AA fibers-ball, which kept the Cd2+ concentration always at a low level. This forms a dynamic equilibrium of rapid release- selective adsorption toward the acid-extractable fraction Cd(II) in the soil-water system. Here, the migratory pathway for the acid-extractable fraction Cd(II) to be released from contaminated soil to water and adsorbed simultaneously on the surface of PP-g-AA fibers-ball was established. This work offers a novel protocol that can remove more than 90% of the acid-extractable fraction Cd(II) from contaminated soil within 12 h, thereby contributes better to mitigate the risk of Cd(II) from soil to the food chain without changing the physical and chemical properties of soil.
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Affiliation(s)
- Kaijian Zou
- State Key Laboratory of Separation Membranes and Membrane Processes/ National Center for International Joint Research on Separation Membranes, Tiangong University, Tianjin 300387, China; School of Materials Science and Engineering, Tiangong University, Tianjin 300387, China
| | - Junfu Wei
- State Key Laboratory of Separation Membranes and Membrane Processes/ National Center for International Joint Research on Separation Membranes, Tiangong University, Tianjin 300387, China; School of Chemical Engineering and Technology, Tiangong University, Tianjin 300387, China.
| | - Di Wang
- State Key Laboratory of Separation Membranes and Membrane Processes/ National Center for International Joint Research on Separation Membranes, Tiangong University, Tianjin 300387, China; Shool of Environmental Science and Engineering, Tiangong University, Tianjin 300387, China
| | - Zhiyun Kong
- State Key Laboratory of Separation Membranes and Membrane Processes/ National Center for International Joint Research on Separation Membranes, Tiangong University, Tianjin 300387, China; Tianjin Engineering Center for Safety Evaluation of Water & Safeguards Technology, Tianjin 300387, China; Shool of Environmental Science and Engineering, Tiangong University, Tianjin 300387, China
| | - Huan Zhang
- State Key Laboratory of Separation Membranes and Membrane Processes/ National Center for International Joint Research on Separation Membranes, Tiangong University, Tianjin 300387, China; Tianjin Engineering Center for Safety Evaluation of Water & Safeguards Technology, Tianjin 300387, China; Shool of Environmental Science and Engineering, Tiangong University, Tianjin 300387, China
| | - Huicai Wang
- State Key Laboratory of Separation Membranes and Membrane Processes/ National Center for International Joint Research on Separation Membranes, Tiangong University, Tianjin 300387, China; School of Chemical Engineering and Technology, Tiangong University, Tianjin 300387, China
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14
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Rong L, Zheng X, Oba BT, Shen C, Wang X, Wang H, Luo Q, Sun L. Activating soil microbial community using bacillus and rhamnolipid to remediate TPH contaminated soil. CHEMOSPHERE 2021; 275:130062. [PMID: 33667768 DOI: 10.1016/j.chemosphere.2021.130062] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2021] [Revised: 02/08/2021] [Accepted: 02/19/2021] [Indexed: 06/12/2023]
Abstract
Soil petroleum contamination has become a global environmental problem. In order to develop a new soil remediation technology, this study established bacteria isolation, surfactant toxicity matching and petroleum contaminated soil remediation practice. The simulated field remediation showed that inoculating the soil with Bacillus methylotrophicus and adding 500 mg kg-1 rhamnolipid (N + RL) to soil can remove 80.24% of aged total petroleum hydrocarbons (TPHs) within 30 days. In particular, although the remediated soil has inoculated sufficient bacterial suspension, the microbial abundance of Bacillus was not a significantly dominant genus after remediation, especially in N + RL (0.73% of the total), but the colonies of indigenous petroleum-degrading bacteria (such as Massilia and Streptomyces) increased significantly. The interaction among genera has been further proved to drive soil non-specific oxidases (such as polyphenol oxidase, laccase and catalase) to remove TPHs. This indicates that the interaction among microorganisms, rather than the degradability of exogenous degrading bacteria, plays more critical role in the degradation of organic pollutants, which enriches the traditional understanding of micro-remediation of contaminated soil. It can be concluded from the obtained results that the remediation of pollutants can be achieved by adjusting the purification capacity of the microbial community and the natural environment.
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Affiliation(s)
- Luge Rong
- School of Environment, Shenyang University, Shenyang, 110044, China
| | - Xuehao Zheng
- School of Environmental Science and Engineering, Tianjin University, Tianjin, 300072, China.
| | - Belay Tafa Oba
- School of Environmental Science and Engineering, Tianjin University, Tianjin, 300072, China
| | - Chenbo Shen
- School of Environmental Science and Engineering, Tianjin University, Tianjin, 300072, China
| | - Xiaoxu Wang
- School of Environment, Shenyang University, Shenyang, 110044, China
| | - Hui Wang
- School of Environment, Shenyang University, Shenyang, 110044, China
| | - Qing Luo
- School of Environment, Shenyang University, Shenyang, 110044, China
| | - Lina Sun
- School of Environment, Shenyang University, Shenyang, 110044, China.
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15
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Miao C, Yao SS, Liu SJ, Zhang K. Effect of water-soluble thiourea formaldehyde (WTF) on soil contaminated with high copper (Ⅱ) concentration. JOURNAL OF HAZARDOUS MATERIALS 2021; 409:124929. [PMID: 33421878 DOI: 10.1016/j.jhazmat.2020.124929] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 12/02/2020] [Accepted: 12/19/2020] [Indexed: 06/12/2023]
Abstract
It is very important to seek a heavy metal soil stabilization/solidification (S/S) agent that has less risk of secondary release and has less impact on the soil. This study explored the repair effect of a new resin repair agent water-soluble thiourea-formaldehyde (WTF), and its stability under indigenous biodegradation and compared the repair effect with sodium sulfide (Na2S) and hydroxyapatite (HAP). Diethylene triamine pentaacetic acid leaching experiments show that WTF can effectively solidify/stabilize 97.9-84.7% of Cu. At the same time, heavy metal speciation analysis experiments show that WTF does indeed convert the exchangeable Cu in the soil into a non-exchangeable form. Research on soil organic matter, biological carbon and enzyme activity after remediation shows that WTF has a more positive effect on soil function, compared with HAP and Na2S. Experiments using indigenous microorganisms to decompose the precipitation formed by WTF and Cu show that under the condition of less impact on soil microorganisms, the risk of secondary release of heavy metals caused by soil microorganisms after WTF remediation is less. These findings provide valuable experience for understanding the role of resin structure in preventing the secondary release of heavy metals and restoring soil function.
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Affiliation(s)
- Chen Miao
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Shan-Shan Yao
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China
| | - She-Jiang Liu
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China.
| | - Kai Zhang
- Tianjin TEDA Greening Group Co., Ltd., China
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16
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Abstract
The contamination of soil by heavy metals and metalloids is a worldwide problem due to the accumulation of these compounds in the environment, endangering human health, plants, and animals. Heavy metals and metalloids are normally present in nature, but the rise of industrialization has led to concentrations higher than the admissible ones. They are non-biodegradable and toxic, even at very low concentrations. Residues accumulate in living beings and become dangerous every time they are assimilated and stored faster than they are metabolized. Thus, the potentially harmful effects are due to persistence in the environment, bioaccumulation in the organisms, and toxicity. The severity of the effect depends on the type of heavy metal or metalloid. Indeed, some heavy metals (e.g., Mn, Fe, Co, Ni) at very low concentrations are essential for living organisms, while others (e.g., Cd, Pb, and Hg) are nonessential and are toxic even in trace amounts. It is important to monitor the concentration of heavy metals and metalloids in the environment and adopt methods to remove them. For this purpose, various techniques have been developed over the years: physical remediation (e.g., washing, thermal desorption, solidification), chemical remediation (e.g., adsorption, catalysis, precipitation/solubilization, electrokinetic methods), biological remediation (e.g., biodegradation, phytoremediation, bioventing), and combined remediation (e.g., electrokinetic–microbial remediation; washing–microbial degradation). Some of these are well known and used on a large scale, while others are still at the research level. The main evaluation factors for the choice are contaminated site geology, contamination characteristics, cost, feasibility, and sustainability of the applied process, as well as the technology readiness level. This review aims to give a picture of the main techniques of heavy metal removal, also giving elements to assess their potential hazardousness due to their concentrations.
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17
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Jiang F, Wang Z, Chen G, Liu Y, Wu H, Tan B, Luo C. Experimental study of pore characteristics and radon exhalation of uranium tailing solidified bodies in acidic environments. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:20111-20120. [PMID: 33410009 DOI: 10.1007/s11356-020-12039-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Accepted: 12/08/2020] [Indexed: 06/12/2023]
Abstract
The pore characteristics and radon exhalation of uranium tailings solidified in an acid environment were investigated in this study. Tailings from the beach of a uranium tailing reservoir in the acid rain area of Central China were selected as samples and solidified with cement, slag powder (GGBS), metakaolin (MK), or slag powder and metakaolin (GM), then immersed in simulated acid rain solution for 60 days. The transverse relaxation time T2 distribution and porosity of each solidified sample before and after immersion were measured by nuclear magnetic resonance (NMR) and the cumulative radon concentration before and after immersion was measured by a RAD7 radon meter. The experimental results show that the nuclear magnetic resonance T2 distribution curve shifts to the left, the peak amplitude decreases, and the pores in the sample gradually shrink as the admixture content increases. The porosity and radon exhalation rate of solidified samples also appear to decrease gradually as admixture content increases; a quadratic function relationship was observed between porosity and radon exhalation rate. The pore size and effective pore volume of solidified samples increase as immersion time increases, while the radon exhalation rate increases and the pore volume gradually increases. The results of this study may provide a sound theoretical basis for the solidification treatment of uranium tailings in engineering practice.
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Affiliation(s)
- Fuliang Jiang
- School of Resource & Environment and Safety Engineering, University of South China, Hengyang, 421001, China.
- Hunan Province Engineering Technology Research Center of Uranium Tailings Treatment Technology, Hengyang, 421001, China.
- Hunan Province Engineering Research Center of Radioactive Control Technology in Uranium Mining, Hengyang, 421001, China.
- Hengyang City Key Laboratory of Occupational Safety and Health Technology, Hengyang, 421001, China.
| | - Zhe Wang
- School of Resource & Environment and Safety Engineering, University of South China, Hengyang, 421001, China
| | - Guan Chen
- School of Resource & Environment and Safety Engineering, University of South China, Hengyang, 421001, China
| | - Yong Liu
- School of Resource & Environment and Safety Engineering, University of South China, Hengyang, 421001, China
- Hunan Province Engineering Technology Research Center of Uranium Tailings Treatment Technology, Hengyang, 421001, China
- Hunan Province Engineering Research Center of Radioactive Control Technology in Uranium Mining, Hengyang, 421001, China
| | - Haonan Wu
- School of Resource & Environment and Safety Engineering, University of South China, Hengyang, 421001, China
| | - Biao Tan
- School of Resource & Environment and Safety Engineering, University of South China, Hengyang, 421001, China
| | - Caiwu Luo
- School of Resource & Environment and Safety Engineering, University of South China, Hengyang, 421001, China
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18
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Liu S, Miao C, Yao S, Ding H, Zhang K. Soil stabilization/solidification (S/S) agent---water-soluble thiourea formaldehyde (WTF) resin: Mechanism and performance with cadmium (Ⅱ). ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 272:116025. [PMID: 33277061 DOI: 10.1016/j.envpol.2020.116025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Revised: 09/13/2020] [Accepted: 10/06/2020] [Indexed: 06/12/2023]
Abstract
It is vital for the development and application of heavy metal stabilization/solidification (S/S) agents to reveal the mechanism of the reaction between water-soluble thiourea formaldehyde (WTF) resin and heavy metal and evaluate its repairing effect. Based on the density functional theory analysis of the WTF resin structure, the mechanism analysis and scanning electron microscope (SEM) showed that the three-dimensional network structure with thiocarbonyl and hydroxyl groups is very conducive to the capture of Cd2+. The reduction rate of Cd2+ in soil added WTF resin could reach 70.6%-86.0%. The result of BCR's sequential extraction also proved that the 86.4%-94.1% of Cd in the soil repaired by WTF resin changed from acid-soluble state to residue state. Enzyme activity analysis and 16sRNA sequencing experiments showed that such a structure does not harm soil health. The urease and phosphatase tests showed the nitrogen and phosphorus cycle of the soil added WTF resin was repaired. Even compared with the remediation agents Na2S and hydroxyapatite, WTF resin still performed better in repairing soil health. These findings provide valuable insights into the efficient causes of WTF resin and its harmless effects on soil. The results obtained provide a critical reference for the future application of practical and gentle heavy metal S/S agents.
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Affiliation(s)
- Shejiang Liu
- School of Environmental Science & Engineering, Tianjin University, No.135, Yaguan Rd., Jinnan District, Tianjin, 300350, China
| | - Chen Miao
- School of Environmental Science & Engineering, Tianjin University, No.135, Yaguan Rd., Jinnan District, Tianjin, 300350, China
| | - Shanshan Yao
- School of Environmental Science & Engineering, Tianjin University, No.135, Yaguan Rd., Jinnan District, Tianjin, 300350, China
| | - Hui Ding
- School of Environmental Science & Engineering, Tianjin University, No.135, Yaguan Rd., Jinnan District, Tianjin, 300350, China.
| | - Kai Zhang
- Tianjin TEDA Greening Group Co., Ltd., China
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Cao P, Qiu K, Zou X, Lian M, Liu P, Niu L, Yu L, Li X, Zhang Z. Mercapto propyltrimethoxysilane- and ferrous sulfate-modified nano-silica for immobilization of lead and cadmium as well as arsenic in heavy metal-contaminated soil. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 266:115152. [PMID: 32702603 DOI: 10.1016/j.envpol.2020.115152] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 06/15/2020] [Accepted: 06/29/2020] [Indexed: 06/11/2023]
Abstract
Nano-silica as an important part of soil is an ideal carrier of passivator material. In this paper, nano-silica was modified by silane coupling agent containing mercapto group and iron (II) salt to afford an organic-inorganic hybrid containing -S-Fe-S functional group (coded as RNS-SFe) on the surface of nano-silica. Results demonstrate that the RNS-SFe nanoparticle has network-like spheroidal shape and a primary particle size is about 18.0 nm. The RNS-SFe hybrid as a potential immobilization agent for heavy metal in soil shows excellent performance for the remediation of the contaminated soil. Specifically, with a dosage of 3.0% (mass ratio) in the soil, it can immobilize bioavailable Pb, Cd, and As by 97.1%, 85.0%, and 80.1%, respectively. Namely, the RNS-SFe hybrid can transform the bioavailable Pb, Cd, and As into insoluble mercapto metal compounds (-S-Pb-S- and -S-Cd-S-) and less soluble iron arsenate (Fe3(AsO4)2, FeAsO4) precipitate on the surface of nano-silica particle, thereby reducing the toxicity and mobility of the toxic contaminant fractions. In the meantime, the immobilized products of the Pb, Cd and As fractions have good resistance against acid leaching. These results are contributive to the application of RNS-SFe for the remediation of multi-heavy metal-contaminated soils in field.
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Affiliation(s)
- Pengle Cao
- National & Local Joint Engineering Research Center for Applied Technology of Hybrid Nanomaterials, Henan University, Kaifeng 475004, China
| | - Kunyan Qiu
- National & Local Joint Engineering Research Center for Applied Technology of Hybrid Nanomaterials, Henan University, Kaifeng 475004, China; Key Laboratory for Monitoring and Remediation of Heavy Metal Polluted Soils of Henan Province, Jiyuan 459000, China
| | - Xueyan Zou
- National & Local Joint Engineering Research Center for Applied Technology of Hybrid Nanomaterials, Henan University, Kaifeng 475004, China
| | - Mingming Lian
- National & Local Joint Engineering Research Center for Applied Technology of Hybrid Nanomaterials, Henan University, Kaifeng 475004, China
| | - Peisong Liu
- National & Local Joint Engineering Research Center for Applied Technology of Hybrid Nanomaterials, Henan University, Kaifeng 475004, China
| | - Liyong Niu
- National & Local Joint Engineering Research Center for Applied Technology of Hybrid Nanomaterials, Henan University, Kaifeng 475004, China; Engineering Research Center for Nanomaterials Co. Ltd, Henan University, Jiyuan 459000, China
| | - Laigui Yu
- National & Local Joint Engineering Research Center for Applied Technology of Hybrid Nanomaterials, Henan University, Kaifeng 475004, China
| | - Xiaohong Li
- National & Local Joint Engineering Research Center for Applied Technology of Hybrid Nanomaterials, Henan University, Kaifeng 475004, China; Key Laboratory for Monitoring and Remediation of Heavy Metal Polluted Soils of Henan Province, Jiyuan 459000, China; Engineering Research Center for Nanomaterials Co. Ltd, Henan University, Jiyuan 459000, China.
| | - Zhijun Zhang
- National & Local Joint Engineering Research Center for Applied Technology of Hybrid Nanomaterials, Henan University, Kaifeng 475004, China; Key Laboratory for Monitoring and Remediation of Heavy Metal Polluted Soils of Henan Province, Jiyuan 459000, China; Engineering Research Center for Nanomaterials Co. Ltd, Henan University, Jiyuan 459000, China
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20
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Zheng XJ, Chen M, Wang JF, Liu Y, Liao YQ, Liu YC. Assessment of Zeolite, Biochar, and Their Combination for Stabilization of Multimetal-Contaminated Soil. ACS OMEGA 2020; 5:27374-27382. [PMID: 33134700 PMCID: PMC7594124 DOI: 10.1021/acsomega.0c03710] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Accepted: 09/17/2020] [Indexed: 05/05/2023]
Abstract
In this study, the natural zeolite and rice husk biochar were mixed as a combination amendment for metal immobilization in a Cd, Pb, As, and W co-contaminated soil. A 90 day incubation study was conducted to investigate the effects of amendments on toxic metal in soil. Zeolite, biochar, and their combination application increased the soil pH and cation exchange capacity. A combination of amendments decreased the bioavailability of Cd, Pb, As, and W. Besides, the potential drawback of biochar application on As and W release was overcome by the combination agent. Zeolite, biochar, and combination treatment decreased total bioavailability toxicity from 335.5 to 182.9, 250.5, and 143.4, respectively, which means that combination was an optimum amendment for soil remediation. The results of the Community Bureau of Reference sequential extraction and scanning electron microscopy-energy-dispersive spectrometry images confirmed the Cd and Pb adsorption onto biochar. However, As and W immobilization was dominantly controlled by zeolite. It appears that the combination of amendments is an efficient amendment to remediate Cd, Pb, As, and W co-contamination in soil, although the combination of amendments has a lower stabilization rate for W than for zeolite.
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Affiliation(s)
- Xiao-Jun Zheng
- Jiangxi Provincial Key Laboratory of
Pollution Control for Mining & Metallurgy Environmental Pollution
Control, Jiangxi University of Science and
Technology, Ganzhou 341000, China
| | - Ming Chen
- Jiangxi Provincial Key Laboratory of
Pollution Control for Mining & Metallurgy Environmental Pollution
Control, Jiangxi University of Science and
Technology, Ganzhou 341000, China
| | - Jun-Feng Wang
- Jiangxi Provincial Key Laboratory of
Pollution Control for Mining & Metallurgy Environmental Pollution
Control, Jiangxi University of Science and
Technology, Ganzhou 341000, China
| | - Yan Liu
- Jiangxi Provincial Key Laboratory of
Pollution Control for Mining & Metallurgy Environmental Pollution
Control, Jiangxi University of Science and
Technology, Ganzhou 341000, China
| | - Yue-Qing Liao
- Jiangxi Provincial Key Laboratory of
Pollution Control for Mining & Metallurgy Environmental Pollution
Control, Jiangxi University of Science and
Technology, Ganzhou 341000, China
| | - You-Cun Liu
- Jiangxi Provincial Key Laboratory of
Pollution Control for Mining & Metallurgy Environmental Pollution
Control, Jiangxi University of Science and
Technology, Ganzhou 341000, China
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21
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Shu J, Li B, Chen M, Sun D, Wei L, Wang Y, Wang J. An innovative method for manganese (Mn 2+) and ammonia nitrogen (NH 4+-N) stabilization/solidification in electrolytic manganese residue by basic burning raw material. CHEMOSPHERE 2020; 253:126896. [PMID: 32402467 DOI: 10.1016/j.chemosphere.2020.126896] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 04/22/2020] [Accepted: 04/24/2020] [Indexed: 06/11/2023]
Abstract
High concentrations of manganese (Mn2+) and ammonia nitrogen (NH4+-N) in electrolytic manganese residue (EMR) have seriously hindered the sustainable development of electrolytic manganese industry. In this study, an innovative basic burning raw material (BRM) was used to stabilize/solidify Mn2+ and NH4+-N in EMR. The characteristics of EMR and BRM, stabilize mechanism of NH4+-N and Mn2+, and leaching test were investigated. The concentrations of NH4+-N and Mn2+ were 12.8 mg/L and 0.1 mg/L, respectively, when the solid liquid ratio was 1.5:1, and the mass ratio of EMR and BRM was 100:10, at the temperature of 20 °C reacting for 12 h Mn2+ was mostly solidified as bustamite ((Mn,Ca)Si2O6), groutite (MnOOH) and ramsdellite (MnO2). NH4+-N was mostly recycled by (NH4)2SO4 and (NH4)3H(SO4)2. Leaching test results indicated that the concentrations of heavy metals were within the permitted level for the integrated wastewater discharge standard (GB8978-1996). Economic evaluation revealed that the cost of EMR treatment was $ 10.15/t by BRM. This study provided a new research idea for EMR harmless disposal.
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Affiliation(s)
- Jiancheng Shu
- Key Laboratory of Solid Waste Treatment and Resource Recycle, Ministry of Education, Southwest University of Science and Technology, Mianyang, 621010, China.
| | - Bing Li
- School of Chemistry and Chemical Engineering, Yangtze Normal University, Chongqing, 408100, China
| | - Mengjun Chen
- Key Laboratory of Solid Waste Treatment and Resource Recycle, Ministry of Education, Southwest University of Science and Technology, Mianyang, 621010, China
| | - Danyang Sun
- Key Laboratory of Solid Waste Treatment and Resource Recycle, Ministry of Education, Southwest University of Science and Technology, Mianyang, 621010, China
| | - Liang Wei
- Key Laboratory of Solid Waste Treatment and Resource Recycle, Ministry of Education, Southwest University of Science and Technology, Mianyang, 621010, China
| | - Yao Wang
- Guizhou Building Materials Quality Supervision Testing Center, Guiyang, 550000, China
| | - Jianyi Wang
- Guizhou Institute of Building Materials Scientific Research and Design Limited Company, Guiyang, 550007, China
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Deng X, Chen Y, Yang Y, Lu L, Yuan X, Zeng H, Zeng Q. Cadmium accumulation in rice (Oryza sativa L.) alleviated by basal alkaline fertilizers followed by topdressing of manganese fertilizer. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 262:114289. [PMID: 32179217 DOI: 10.1016/j.envpol.2020.114289] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Revised: 02/22/2020] [Accepted: 02/27/2020] [Indexed: 06/10/2023]
Abstract
Rice is a main source of dietary cadmium (Cd), thus, how to reduce the Cd concentration in brown rice has received extensive attention worldwide. In three acidic paddy soils slightly to moderately contaminated with Cd, a series of field experiments were conducted to evaluate the effects of different proportions of nitrogen-phosphorus-potassium (N-P-K) fertilizer (urea, calcium magnesium phosphate, and potassium carbonate, respectively) alone or coupled with a topdressing of manganese (Mn) fertilizer at the tillering stage on reducing Cd bioavailability in soil and uptake in rice. The rational application of N-P-K fertilizer not only provided the basic nutrients to promote the normal growth of rice but also increased soil pH and thereby reduced the Cd bioavailability in soil. The Mg(NO3)2-extracted Cd concentrations in the three soils were reduced by 26.46-56.53%, while TCLP-extracted Cd were reduced by 19.87-45.41%, with little influence on soil cation exchange capacity (CEC) and organic matter (OM). The application of Mn fertilizer at the tillering stage increased Mn and Cd sequestration in the iron plaque. The Mn content in iron plaque increased by 15.71-58.67% and a significant positive correlation between Cd and Mn was observed at the three sites. Collectively, this combined method of fertilization significantly reduced Cd accumulation in rice tissues, the Cd concentrations in roots of treated plants decreased by 11.18-37.78%, whereas the concentrations in straw decreased by 13.16-41.03%. Particularly to brown rice, in which accumulation decreased by 25.19-44.70%, 37.35-47.84%, and 38.00-60.88% in three typical paddy fields, but no significant effect was observed for the Cd translocation factors (TF) among rice tissues. Thus, the basal application of combined urea and alkaline inorganic fertilizers followed by topdressing of Mn fertilizer may be a promising and cost-effective tactics for the remediation of Cd-contaminated paddy soils.
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Affiliation(s)
- Xiao Deng
- College of Resources and Environment, Hunan Agricultural University, Changsha, 410128, China
| | - Yixuan Chen
- College of Resources and Environment, Hunan Agricultural University, Changsha, 410128, China
| | - Yang Yang
- College of Resources and Environment, Hunan Agricultural University, Changsha, 410128, China; College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, 410128, China
| | - Lei Lu
- College of Resources and Environment, Hunan Agricultural University, Changsha, 410128, China
| | - Xiaoqing Yuan
- College of Resources and Environment, Hunan Agricultural University, Changsha, 410128, China
| | - Hongyuan Zeng
- College of Resources and Environment, Hunan Agricultural University, Changsha, 410128, China; College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, 410128, China
| | - Qingru Zeng
- College of Resources and Environment, Hunan Agricultural University, Changsha, 410128, China; College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, 410128, China.
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23
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Deng X, Yang Y, Zeng H, Chen Y, Zeng Q. Variations in iron plaque, root morphology and metal bioavailability response to seedling establishment methods and their impacts on Cd and Pb accumulation and translocation in rice (Oryza sativa L.). JOURNAL OF HAZARDOUS MATERIALS 2020; 384:121343. [PMID: 31611017 DOI: 10.1016/j.jhazmat.2019.121343] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Revised: 09/12/2019] [Accepted: 09/27/2019] [Indexed: 06/10/2023]
Abstract
Global rice production is undergoing a shift from traditional seedling transplanting to direct seeding. There are also serious global challenges caused by heavy metal pollution in grain. To evaluate heavy metal accumulation in rice under different seedling establishment methods, we conducted field experiments with manual transplanting (MT), seedling throwing (ST) and direct seeding (DS). Data revealed that DS method enhances cadmium (Cd) and lead (Pb) accumulation in roots, straw, and brown rice. In particular, the Cd concentration in DS brown rice was 35.4% and 22.5% higher than in MT and ST methods, respectively; the concentration of Pb in DS brown rice was 1.97 times higher than in MT. The reasons for these observations are that DS rice root systems have finer diameters, larger specific surface areas, larger specific root lengths, more root tips, and reducing Fe plaque formation on root surface while DS rice roots formed in the upper soil layer and exhibited higher Cd and Pb bioactivity within the rhizosphere soil. Collectively, here we show for the first time that the shift in seedling establishment methods from transplanting to direct seeding also have played a partial contribution in the observed increased severity of heavy metal pollution in rice levels.
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Affiliation(s)
- Xiao Deng
- College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China
| | - Yang Yang
- College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China; College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China
| | - Hongyuan Zeng
- College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China; College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China
| | - Yixuan Chen
- College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China
| | - Qingru Zeng
- College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China; College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha 410128, China.
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24
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Shi J, Pang J, Liu Q, Luo Y, Ye J, Xu Q, Long B, Ye B, Yuan X. Simultaneous removal of multiple heavy metals from soil by washing with citric acid and ferric chloride. RSC Adv 2020; 10:7432-7442. [PMID: 35492199 PMCID: PMC9049904 DOI: 10.1039/c9ra09999a] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Accepted: 01/29/2020] [Indexed: 11/21/2022] Open
Abstract
Citric acid and ferric chloride exhibited synergistic effect on the removal of multiple heavy metals from soil.
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Affiliation(s)
- Jiyan Shi
- Department of Environmental Engineering
- College of Environmental and Resource Sciences
- Zhejiang University
- Hangzhou
- China
| | - Jingli Pang
- Department of Environmental Engineering
- College of Environmental and Resource Sciences
- Zhejiang University
- Hangzhou
- China
| | - Qinglin Liu
- Department of Environmental Engineering
- College of Environmental and Resource Sciences
- Zhejiang University
- Hangzhou
- China
| | - Yating Luo
- Department of Environmental Engineering
- College of Environmental and Resource Sciences
- Zhejiang University
- Hangzhou
- China
| | - Jien Ye
- Department of Environmental Engineering
- College of Environmental and Resource Sciences
- Zhejiang University
- Hangzhou
- China
| | - Qiao Xu
- Department of Environmental Engineering
- College of Environmental and Resource Sciences
- Zhejiang University
- Hangzhou
- China
| | - Bibo Long
- Guangzhou Sugarcane Industry Research Institute
- Guangdong Bioengineering Institute
- Guangzhou
- China
| | - Binhui Ye
- Chengbang Eco-Environment Co., Ltd
- Hangzhou
- China
| | - Xiaofeng Yuan
- College of Life Science
- Zhejiang Chinese Medical University
- Hangzhou
- China
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25
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Rađenović D, Kerkez Đ, Pilipović DT, Dubovina M, Grba N, Krčmar D, Dalmacija B. Long-term application of stabilization/solidification technique on highly contaminated sediments with environment risk assessment. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 684:186-195. [PMID: 31153066 DOI: 10.1016/j.scitotenv.2019.05.351] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Revised: 05/20/2019] [Accepted: 05/23/2019] [Indexed: 06/09/2023]
Abstract
After dredging of contaminated sediment, additional remediation technique is required before its final disposal. For this purpose, this research was based on the long-term stabilization/solidification (S/S) process of highly contaminated sediment (dominantly by heavy metals) from a European environmental hot spot, the Great Bačka Canal. Due to optimisation of remediation techniques, this sediment is treated with selected immobilization agents: kaolinite, quicklime and Portland cement. The use of pseudo-total metal content (selected priority substances: Cr, Ni, Cu, Cd, Zn, Pb and As) in untreated sediment, determined that sediment urgently requires remediation. Short-term (after 7 and 28 days) and long-term (after 7 years) monitoring were done in order to estimate the concentrations of metals and effect on biota from S/S mixtures during this processes. The environmental risk assessment encompassed the application of several appropriate analytical methods: the pseudo-total metal content, the German standard leaching test - DIN 3841-4 S4 and Toxicity Characteristic Leaching Procedure - TCLP test leaching tests and sequential extraction procedure (BCR) on S/S mixtures, testing the aging process and toxicity effects. After simulating real environmental conditions using all tests in all three mixtures, metals do not exceed the prescribed limit values and as such S/S mixtures are classified as non-hazardous waste. Sequential extraction procedure showed that the highest percentage of metals are in the residual phase, bound to silicates and crystalline structure. After 7 years of S/S mixture aging, kaolinite showed the highest binding capacity that was reflected in the content of metals in the residual phase (34.8% of Ni to 77.6% of Cr). DIN and TCLP leaching tests confirmed that the exchangeable phase has a minor effect on the environment. Accordingly, this remediation technology could be well applied for final disposal of this and similar extremely contaminated sediment dominantly with inorganic pollutants.
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Affiliation(s)
- Dunja Rađenović
- University of Novi Sad, Faculty of Sciences, Department of Chemistry, Biochemistry and Environmental Protection, Dositej Obradovic Square 3, 21000 Novi Sad, Serbia.
| | - Đurđa Kerkez
- University of Novi Sad, Faculty of Sciences, Department of Chemistry, Biochemistry and Environmental Protection, Dositej Obradovic Square 3, 21000 Novi Sad, Serbia
| | - Dragana Tomašević Pilipović
- University of Novi Sad, Faculty of Sciences, Department of Chemistry, Biochemistry and Environmental Protection, Dositej Obradovic Square 3, 21000 Novi Sad, Serbia
| | - Miloš Dubovina
- University of Novi Sad, Faculty of Sciences, Department of Chemistry, Biochemistry and Environmental Protection, Dositej Obradovic Square 3, 21000 Novi Sad, Serbia
| | - Nenad Grba
- University of Novi Sad, Faculty of Sciences, Department of Chemistry, Biochemistry and Environmental Protection, Dositej Obradovic Square 3, 21000 Novi Sad, Serbia
| | - Dejan Krčmar
- University of Novi Sad, Faculty of Sciences, Department of Chemistry, Biochemistry and Environmental Protection, Dositej Obradovic Square 3, 21000 Novi Sad, Serbia
| | - Božo Dalmacija
- University of Novi Sad, Faculty of Sciences, Department of Chemistry, Biochemistry and Environmental Protection, Dositej Obradovic Square 3, 21000 Novi Sad, Serbia
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26
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Potential Ecological Risk and Health Risk Assessment of Heavy Metals and Metalloid in Soil around Xunyang Mining Areas. SUSTAINABILITY 2019. [DOI: 10.3390/su11184828] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Xunyang is rich in various metal minerals and is one of the four major metal mining areas in Shaanxi province, China. To explore the effects of soil heavy metals and metalloid pollution on the environment and human health around the mining areas, four places—Donghecun (D), Gongguan (G), Qingtonggou (Q) and Nanshagou (N)—were selected as the sampling sites. Potential ecological risk (PER) and health risk assessment (HRA) models were used to analyze the environmental and health risks around the mining areas. The concentration of heavy metals (Cd, Cr, Pb, Zn, Ni, Cu, Hg) and metalloid (As) in cultivated land in the vicinity of Xunyang mining areas indicated that, except for Cu, the remaining elements detected exceeded the threshold values at some sites. The geo-accumulation index (IGeo) revealed that soils in G and Q could be identified as being extremely contaminated. PER indicated that there was significantly high risk at G and Q for Hg. In N, Pb recorded the highest E r i , which also demonstrates a considerable pre-existing risk. HRA indicated that the hazard index (HI) for both carcinogenic and non-carcinogenic risks was much higher among children than among adults, and the ingestion pathway contributed the greatest risk to human health, followed by the dermal pathway and inhalation. Because the HI values of the metals and metalloid in the study areas were all lower than 1, there was no significant non-carcinogenic risk. However, the carcinogenic risk for Cr is relatively higher, surpassing the tolerable values in G, Q, and N. This study analyzed the ecological risks and human health risks of heavy metals and metalloid in farmland soils near the sampling mining areas, and demonstrated the importance of environmental changes caused by land development in the mining industry.
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27
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Mai X, Luo D, Wei L, Liu Y, Huang X, Wu Q, Yao G, Liu G, Liu L. Evaluation method for the measuring comprehensive suitability of chelating agents: a study of the temporal dynamics of heavy metal activation. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2019; 21:1415-1422. [PMID: 31272190 DOI: 10.1080/15226514.2019.1633262] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The effects of chelating agents on heavy metal activation in Cd- and Pb-contaminated soils were studied through a dynamic activation experiment. An evaluation method for the measuring comprehensive suitability of chelating agent was established by calculating indexes for the degree of activation effect suitability and activated heavy metals' half-life suitability. The following results were obtained: in Cd- and Pb-contaminated soils, heavy metal activation effects reached or approached maximum activating effects within 1 d and subsequently showed different levels of decline in all chelating agent treatment conditions. Declines in activation effects similarly subjected to the law of exponents over time and to the goodness of fit in DTPA, NTA, and GLDA ranged from 0.80 to 0.98. For Cd- and Pb-contaminated soils, chelating agents' levels of comprehensive suitability (H) were recorded as follows: NTA(1.40) > GLDA(1.31) > DTPA(1.14) > EDTA(1.00) > EDDS(0.14) > CA(0.06) and GLDA(1.56) > DTPA(1.48) > EDTA(1.00) > NTA(0.78) > EDDS(0.26) > CA (0.02). GLDA and DTPA are both suitable for Cd and Pb phytoextraction. Moreover, NTA and GLDA are optimal chelating agents for Cd and Pb phytoextraction, respectively.
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Affiliation(s)
- Xiaotao Mai
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, PR China
| | - Dinggui Luo
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, PR China
- Linköping University - Guangzhou University Research Center on Urban Sustainable Development, Guangzhou University, Guangzhou, PR China
- Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, Guangzhou University, Guangzhou, PR China
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou, PR China
| | - Lezhang Wei
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, PR China
- Linköping University - Guangzhou University Research Center on Urban Sustainable Development, Guangzhou University, Guangzhou, PR China
| | - Yu Liu
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, PR China
- Linköping University - Guangzhou University Research Center on Urban Sustainable Development, Guangzhou University, Guangzhou, PR China
| | - Xuexia Huang
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, PR China
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou, PR China
| | - Qihang Wu
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou, PR China
| | - Guangchao Yao
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, PR China
| | - Guowei Liu
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, PR China
| | - Lirong Liu
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou, PR China
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28
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The Potential of Remedial Techniques for Hazard Reduction of Steel Process by Products: Impact on Steel Processing, Waste Management, the Environment and Risk to Human Health. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 16:ijerph16122093. [PMID: 31200475 PMCID: PMC6616418 DOI: 10.3390/ijerph16122093] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 06/07/2019] [Accepted: 06/10/2019] [Indexed: 12/03/2022]
Abstract
The negative impact from industrial pollution of the environment is still a global occurrence, and as a consequence legislation and subsequent regulation is becoming increasingly stringent in response, in particular, to minimising potential impact on human health. These changes have generated growing pressures for the steel industry to innovate to meet new regulations driving a change to the approach to waste management across the industrial landscape, with increasing focus on the principles of a circular economy. With a knowledge of the compositional profiles of process by-products, we have assessed chemical cleaning to improve environmental performance and minimise disruption to manufacturing processes, demonstrating re-use and recycling capacity. We show that with a knowledge of phase composition, we are able to apply stabilisation methods that can either utilise waste streams directly or allow manipulation, making them suitable for re-use and/or inert disposal. We studied blast furnace slags and Portland cement mixes (50%/50% and 30%/70%) with a variety of other plant wastes (electrostatic precipitator dusts (ESP), blast furnace (BF) sludge and basic oxygen furnace (BOF) sludge) which resulted in up to 90% immobilisation of hazardous constituents. The addition of organic additives i.e., citric acid can liberate or immobilise problematic constituents; in the case of K, both outcomes occurred depending on the waste type; ESP dust BF sludge and BOF fine sludge. Pb and Zn however were liberated with a 50–80% and 50–60% residue reduction respectively, which generates possibilities for alternative uses of materials to reduce environmental and human health impact.
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29
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Su M, Liao C, Chen D, Shih K, Kong L, Tang J, Zhang H, Song G. Evaluation of the effectiveness of Cd stabilization by a low-temperature sintering process with kaolinite/mullite addition. WASTE MANAGEMENT (NEW YORK, N.Y.) 2019; 87:814-824. [PMID: 31109586 DOI: 10.1016/j.wasman.2019.03.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2018] [Revised: 02/28/2019] [Accepted: 03/01/2019] [Indexed: 06/09/2023]
Abstract
This study first examined the phase transformation in the reactive sintering systems of cadmium-laden industrial sludge and Al-Si-rich precursors with different Cd/Al/Si molar ratios under various temperatures. X-ray diffraction results indicated that the Cd started to be incorporated at 750 °C by kaolinite or mullite (calcined from kaolinite). Three hours of processing at 950 °C can effectively incorporate Cd into Cd-Al-Si or Cd-Si materials. The amount of CdO in the reactive systems had significant influences on the Cd incorporation behavior into crystalline phases. With a small amount of CdO, product phase CdAl2Si2O8 dominated in the systems. Systems with considerable CdO produced notable amounts of Cd2SiO4 and Cd3SiO5. The production of Cd2SiO4 and Cd3SiO5 from CdO + mullite was more significant than that using kaolinite due to the preferred reaction between CdO and SiO2. To assess the effect of metal stabilization, single-phase products that host Cd (namely, CdAl2Si2O8, Cd2SiO4, and Cd3SiO5) were obtained, maintained at pH 4.0, and subjected to a constant-pH leaching test (CPLT) for 120 min. CPLT results evidently indicated that these phases were remarkably resistant to substantial acid (nitric acid) attack; the leaching behavior of CdAl2Si2O8 was incongruent dissolution. Finally, cadmium can be effectively incorporated into CdAl2Si2O8, Cd2SiO4, or Cd3SiO5 by using sludge ash from a secondary sewage treatment works, suggesting that precursors enriched with Al and Si can be promising materials in a cleaner production process for treating cadmium-laden industrial sludge.
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Affiliation(s)
- Minhua Su
- Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China
| | - Changzhong Liao
- Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Guangdong Institute of Eco-environmental Science & Technology, Guangzhou 510650, China; Department of Civil Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, China.
| | - Diyun Chen
- Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China
| | - Kaimin Shih
- Department of Civil Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, China.
| | - Lingjun Kong
- Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China
| | - Jinfeng Tang
- Linköping University - Guangzhou University Research Center on Urban Sustainable Development, Guangzhou University, Guangzhou 510006, China
| | - Hongguo Zhang
- Linköping University - Guangzhou University Research Center on Urban Sustainable Development, Guangzhou University, Guangzhou 510006, China
| | - Gang Song
- Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China
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30
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Wang L, Chen L, Cho DW, Tsang DCW, Yang J, Hou D, Baek K, Kua HW, Poon CS. Novel synergy of Si-rich minerals and reactive MgO for stabilisation/solidification of contaminated sediment. JOURNAL OF HAZARDOUS MATERIALS 2019; 365:695-706. [PMID: 30472455 DOI: 10.1016/j.jhazmat.2018.11.067] [Citation(s) in RCA: 71] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Revised: 11/05/2018] [Accepted: 11/15/2018] [Indexed: 06/09/2023]
Abstract
Disposal of significant amounts of dredged contaminated sediment poses an economic and environmental problem worldwide. Transforming contaminated sediment into value-added construction materials using low-carbon MgO cement is a sustainable option; however, the weak mechanical strength and unreliable water-solubility of MgO cement restrict its practical engineering applications. This study elucidates the potential role of industrial Si-rich minerals in the performance enhancement of MgO-based products via the promotion of magnesium silicate hydrate (M-S-H) gel formation. Quantitative X-ray diffraction and 29Si nuclear magnetic resonance analyses indicated that compositions and crystallinities of the Si-rich minerals significantly influence the formation and polymerisation of the M-S-H gel. Pulverised fly ash was found to be a promising Si-rich mineral for generating polymeric M-S-H gel, whereas incinerated sewage sludge ash samples demonstrated a low degree of polymerisation, and the use of glass powder samples gave a low yield of M-S-H. The formation of M-S-H gel enhanced the compressive strength and water resistance (strength retention after water immersion). Further experiments demonstrated that Si-modified MgO cement can transform dredged sediment into fill materials with satisfactory mechanical properties and contaminant immobilisation. Therefore, the synergy between reactive MgO and Si-rich industrial waste is a novel option for sustainable remediation and environmental applications.
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Affiliation(s)
- Lei Wang
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China.
| | - Liang Chen
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
| | - Dong-Wan Cho
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
| | - Daniel C W Tsang
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China.
| | - Jian Yang
- State Key Laboratory of Ocean Engineering, School of Naval Architecture, Ocean & Civil Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Deyi Hou
- School of Environment, Tsinghua University, Beijing, 100084, China
| | - Kitae Baek
- Department of Environmental Engineering, Soil Environment Research Center, Chonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju, 54896, Republic of Korea
| | - Harn Wei Kua
- Department of Building, School of Design and Environment, National University of Singapore, 4 Architecture Dr., S117566, Singapore
| | - Chi-Sun Poon
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
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31
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Li F, Wang W, Li C, Zhu R, Ge F, Zheng Y, Tang Y. Self-mediated pH changes in culture medium affecting biosorption and biomineralization of Cd 2+ by Bacillus cereus Cd01. JOURNAL OF HAZARDOUS MATERIALS 2018; 358:178-186. [PMID: 29990805 DOI: 10.1016/j.jhazmat.2018.06.066] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Revised: 06/14/2018] [Accepted: 06/29/2018] [Indexed: 06/08/2023]
Abstract
Biomineralization is an interesting naturally occurring process of forming minerals by microorganisms, which offers an efficient way to sequester heavy metal ions within relatively stable solid phases. In this study, Bacillus cereus Cd01 was selected to investigate effects of self-mediated pH on biosorption and biomineralization of Cd2+ in whole 72h cultivation period. Results revealed that strain Cd01-mediated pH decrease of the cultivation medium from 7.0 to 6.1 inhibited biosorption of Cd2+ on Cd01 cells at the initial cultivation period, while an increased pH from 6.1 to 7.4 facilitated biosorption of Cd2+ on Cd01 cells at the middle and late cultivation period. The reasons were mainly that self-mediated pH altered cell surface hydrophobicity and cell membrane fluidity of strain Cd01. Moreover, biosorption and bioaccumulation of Cd2+ on Cd01 cells in the period of increased pH promoted biomineralization of Cd2+ observed by the transmission and scanning electron microscopes. The analyses of energy dispersive spectroscopy, X-ray photoelectron spectroscopy and select area electron diffraction demonstrated that Cd2+ loaded on Cd01 cells was biomineralized into polycrystalline and/ or amorphous cadmium sulfide and cadmium phosphate. These results suggest that strain Cd01 may play a potential role in biomineralization remediation of heavy metal contaminated soils.
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Affiliation(s)
- Feng Li
- College of Environment Science and Resources, Xiangtan University, Xiangtan 411105, PR China; Hunan Engineering Laboratory for High Efficiency Purification Technology and its Application on Complex Heavy Metal Wastewater Treatment, Xiangtan 411105, PR China.
| | - Wei Wang
- College of Environment Science and Resources, Xiangtan University, Xiangtan 411105, PR China; Hunan Engineering Laboratory for High Efficiency Purification Technology and its Application on Complex Heavy Metal Wastewater Treatment, Xiangtan 411105, PR China
| | - Chengcheng Li
- College of Environment Science and Resources, Xiangtan University, Xiangtan 411105, PR China; Hunan Engineering Laboratory for High Efficiency Purification Technology and its Application on Complex Heavy Metal Wastewater Treatment, Xiangtan 411105, PR China; Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, PR China
| | - Runliang Zhu
- CAS Key Laboratory of Mineralogy and Metallogency/Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, PR China
| | - Fei Ge
- College of Environment Science and Resources, Xiangtan University, Xiangtan 411105, PR China; Hunan Engineering Laboratory for High Efficiency Purification Technology and its Application on Complex Heavy Metal Wastewater Treatment, Xiangtan 411105, PR China
| | - Yang Zheng
- College of Environment Science and Resources, Xiangtan University, Xiangtan 411105, PR China; Hunan Engineering Laboratory for High Efficiency Purification Technology and its Application on Complex Heavy Metal Wastewater Treatment, Xiangtan 411105, PR China
| | - Yixin Tang
- College of Environment Science and Resources, Xiangtan University, Xiangtan 411105, PR China; Hunan Engineering Laboratory for High Efficiency Purification Technology and its Application on Complex Heavy Metal Wastewater Treatment, Xiangtan 411105, PR China
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Elwakeel KZ, El-Liethy MA, Ahmed MS, Ezzat SM, Kamel MM. Facile synthesis of magnetic disinfectant immobilized with silver ions for water pathogenic microorganism's deactivation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:22797-22809. [PMID: 29855880 DOI: 10.1007/s11356-018-2071-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Accepted: 04/17/2018] [Indexed: 06/08/2023]
Abstract
One-pot synthesis of a new magnetic disinfectant was achieved through the polymerization of thiourea and formaldehyde in the presence of magnetite nanoparticles (MTUF). The obtained magnetic chelating resin was loaded with Ag(I) ions. This material was tested as a disinfectant for water pathogenic microorganism's deactivation. The toxicity of MTUF before and after Ag(I) loading was estimated. The antimicrobial activity tests of MTUF-Ag were carried out against Escherichia coli, Salmonella Typhimurium, and Pseudomonas aeruginosa as examples of Gram-negative bacteria; Listeria monocytogenes, Staphylococcus aureus, Enterococcus faecalis, and Bacillus subtilis as examples of Gram-positive bacteria; and Candida albicans as representative for fungi. The results showed that the minimum inhibitory dosage (MID) of MTF-Ag against Escherichia coli, Salmonella Typhimurium, Listeria monocytogenes, Staphylococcus aureus, and mixed culture were 1.5, 2.0, 1.0, 1.5, and 1.5 mg/mL, respectively, after 40 min of contact time. While C. albicans was more resistant to the magnetic disinfectant, only three log reductions were done at 2.5 mg/mL. The studied MTUF-Ag was successfully tested for water and wastewater pathogenic microorganism's deactivation. It can be concluded that MTUF-Ag could be a good candidate for water disinfection.
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Affiliation(s)
- Khalid Z Elwakeel
- Chemistry Department, Faculty of Science, University of Jeddah, Jeddah, Saudi Arabia.
- Environmental Science Department, Faculty of Science, Port Said University, Port Said, Egypt.
| | - Mohamed Azab El-Liethy
- Environmental Microbiology Lab., Water Pollution Research Department, National Research Centre, P.O. Box 12262, Dokki, Giza, Egypt.
| | - Mohammad S Ahmed
- Water Quality Audit Department, Egyptian Water and Wastewater Regulatory Agency (EWRA), New Cairo, Egypt
| | - Saeid M Ezzat
- Department of Botany, Faculty of Science, Zagazig University, Zagazig, Egypt
| | - Mohamed M Kamel
- Environmental Microbiology Lab., Water Pollution Research Department, National Research Centre, P.O. Box 12262, Dokki, Giza, Egypt
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Dzhardimalieva GI, Uflyand IE. Design Strategies of Metal Complexes Based on Chelating Polymer Ligands and Their Application in Nanomaterials Science. J Inorg Organomet Polym Mater 2018. [DOI: 10.1007/s10904-018-0841-8] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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