1
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Zhao G, Tian C, Wu P, Zhang X, Wang Z, Chen X, Xiong Z, Zhao Y, Zhang J. Effect of oxide interactions on chromium speciation transformation during simulated municipal solid waste incineration. J Environ Sci (China) 2024; 142:11-20. [PMID: 38527877 DOI: 10.1016/j.jes.2023.11.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2023] [Revised: 11/01/2023] [Accepted: 11/02/2023] [Indexed: 03/27/2024]
Abstract
Chromium released during municipal solid waste incineration (MSWI) is toxic and carcinogenic. The removal of chromium from simulated MSWI flue gas by four sorbents (CaO, bamboo charcoal (BC), powdered activated carbon (PAC), and Al2O3) and the effects of four oxides (SiO2, Al2O3, Fe2O3, and CaO) on chromium speciation transformation were investigated. The results showed that the removal rates of total Cr by the four sorbents were Al2O3 < CaO < PAC < BC, while the removal rates of Cr(VI) by the four sorbents were Al2O3 < PAC < BC < CaO. CaO had a strong oxidizing effect on Cr(III), while BC and PAC had a better-reducing effect on Cr(VI). SiO2 was better for the reduction of Na2CrO4 and K2CrO4 above 1000°C due to its strong acidity, and the addition of CaO significantly inhibited the reduction of Cr(VI). MgCrO4 decomposed above 700°C to form MgCr2O4, and the reaction between MgCrO4 and oxides also existed in the form of a more stable trivalent spinel. Furthermore, when investigating the effect of oxides on the oxidation of Cr(III) in CrCl3, it was discovered that CaO promoted the conversion of Cr(III) to Cr(VI), while the presence of chlorine caused chromium to exist in the form of Cr(V), and increasing the content of CaO and extending the heating time facilitated the oxidation of Cr(III). In addition, silicate, aluminate, and ferrite were generated after the addition of SiO2, Al2O3, and Fe2O3, which reduced the alkalinity of CaO and had an important role in inhibiting the oxidation of Cr(III). The acidic oxides can not only promote the reduction of Cr(VI) but also have an inhibitory effect on the oxidation of Cr(III) ascribed to alkali metals/alkaline earth metals, and the proportion of acidic oxides can be increased moderately to reduce the generation of harmful substances in the hazardous solid waste heat treatment.
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Affiliation(s)
- Guodong Zhao
- State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Chong Tian
- School of Power and Mechanical Engineering, Wuhan University, Wuhan 430072, China.
| | - Peidong Wu
- State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Xuguang Zhang
- State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Zhikang Wang
- State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Xiaoxiang Chen
- School of Environmental Engineering, Wuhan Textile University, Wuhan 430200, China
| | - Zhuo Xiong
- State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China; National Environmental Protection Engineering Technology Center for Trace Elements Pollution Control and Low Carbon Utilization of Coal, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Yongchun Zhao
- State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China; National Environmental Protection Engineering Technology Center for Trace Elements Pollution Control and Low Carbon Utilization of Coal, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Junying Zhang
- State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China; National Environmental Protection Engineering Technology Center for Trace Elements Pollution Control and Low Carbon Utilization of Coal, Huazhong University of Science and Technology, Wuhan 430074, China.
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Kaur G, Sharma S, Bhardwaj N, Nayak MK, Deep A. Simple fluorochromic detection of chromium with ascorbic acid functionalized luminescent Bio-MOF-1. NANOSCALE 2024; 16:12523-12533. [PMID: 38888214 DOI: 10.1039/d4nr00768a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/20/2024]
Abstract
The bioaccumulation of various heavy metals in the environment and agriculture is posing serious hazards to human health. Hexavalent chromium is one of the most encountered heavy metal pollutants. The routine monitoring of Cr(VI) via simple methods assumes great analytical significance in sectors like environmental safety, food quality, etc. This study reports a novel biocompatible and luminescent metal-organic framework (ascorbic acid functionalized Bio-MOF-1) based "Turn-on" nanoprobe for rapid and sensitive optical detection of Cr(VI). Bio-MOF-1 has been synthesized, functionalized with ascorbic acid (AA), and then comprehensively characterized for its key material properties. The presence of Cr(VI) results in the photoluminescence recovery of Bio-MOF-1/AA. Using the above approach, Cr(VI) is detected over a wide concentration range of 0.02 to 20 ng mL-1, with the limit of detection being 0.01 ng mL-1. The nanoprobe is capable of detecting Cr(VI) in real water as well as in some spiked food samples. Hence, the ascorbic acid functionalized Bio-MOF-1 nanoprobe is established as a potential on-field detection tool for Cr(VI).
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Affiliation(s)
- Gurjeet Kaur
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, Uttar Pradesh, India
- CSIR-Central Scientific Instruments Organization (CSIR-CSIO), Sector 30C, Chandigarh-160030, India.
| | - Saloni Sharma
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, Uttar Pradesh, India
- CSIR-Central Scientific Instruments Organization (CSIR-CSIO), Sector 30C, Chandigarh-160030, India.
| | - Neha Bhardwaj
- Institute of Nano Science and Technology (INST), Sector 81, S.A.S. Nagar (Mohali), Punjab-140306, India.
| | - Manoj K Nayak
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, Uttar Pradesh, India
- CSIR-Central Scientific Instruments Organization (CSIR-CSIO), Sector 30C, Chandigarh-160030, India.
| | - Akash Deep
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, Uttar Pradesh, India
- Institute of Nano Science and Technology (INST), Sector 81, S.A.S. Nagar (Mohali), Punjab-140306, India.
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Boonprakob N, Channei D, Zhao C. High-performance photocatalytic reduction of Cr(VI) using a retrievable Fe-doped WO 3/SiO 2 heterostructure. DISCOVER NANO 2024; 19:22. [PMID: 38294564 PMCID: PMC10831000 DOI: 10.1186/s11671-023-03919-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Accepted: 10/27/2023] [Indexed: 02/01/2024]
Abstract
The enhancement of the photocatalytic performance of pristine WO3 was systematically adjusted due to its fast recombination rate and low reduction potential. A designed heterostructure photocatalyst was necessarily synthesised by Fe3+ metal ions doping into WO3 structure with and composition modification. In this study, we synthesised a retrievable Fe-doped WO3/SiO2 heterostructure using a surfactant-assisted hydrothermal method. This heterostructure was then employed as an effective photocatalyst for the removal of Cr(VI) under visible light irradiation. Enlarged photocatalytic reduction was observed over a synergetic 7.5 mol% Fe-doped WO3/SiO2-20 nanocomposite, resulting in dramatically increased activity compared with undoped WO3 and SiO2 nanomaterials under visible light illumination within 90 min. The presence of 7.5 mol% Fe3+ ion dopant in WO3 optimised electron-hole recombination, consequently reducing WO3 photocorrosion. After adding SiO2 nanoparticles, the binary WO3-SiO2 nanocomposite played roles as both adsorbent and photocatalyst to increase specific surface area. Thus, the 7.5 mol% Fe-doped WO3/SiO2-20 nanocomposite catalyst had more active sites on the surface of catalyst, and enhanced photocatalytic reduction was significantly achieved. The results showed 91.1% photocatalytic reduction over the optimum photocatalyst, with a photoreduction kinetic rate of 21.1 × 10-3 min-1, which was approximately four times faster than pristine WO3. Therefore, the superior optimal photocatalyst demonstrated reusability, with activities decreasing by only 9.8% after five cycles. The high photocatalytic performance and excellent stability of our photocatalyst indicate great potential for water pollution treatments.
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Affiliation(s)
- Natkritta Boonprakob
- Program of Chemistry, Faculty of Science and Technology, Uttaradit Rajabhat University, Uttaradit, 53000, Thailand.
| | - Duangdao Channei
- Department of Chemistry, Faculty of Science, Naresuan University, Phitsanulok, 65000, Thailand
| | - Chen Zhao
- School of Materials and Energy, Guangdong University of Technology, Guangzhou, 510006, People's Republic of China
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Mezencev R, Gibbons C. Interactions between chromium species and DNA in vitro and their potential role in the toxicity of hexavalent chromium. Metallomics 2023; 15:mfad045. [PMID: 37491700 DOI: 10.1093/mtomcs/mfad045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Accepted: 07/12/2023] [Indexed: 07/27/2023]
Abstract
Epidemiological and animal studies have supported the carcinogenicity of hexavalent chromium [Cr(VI)]; however, molecular changes responsible for the induction of cancer by Cr(VI) are not entirely understood. Numerous mechanistic studies suggested the role of oxidative stress and genotoxicity in Cr(VI)-mediated carcinogenesis; however, specific types of DNA damage have not yet been conclusively attributed to specific chromium species or other reactive byproducts generated in biological systems exposed to Cr(VI). Due to the remarkably complex chemistry and biological effects of chromium species generated through the intracellular reduction of Cr(VI), their relevance for Cr(VI)-mediated carcinogenesis has not yet been fully elucidated and continues to be a subject of ongoing discussions in the field. In this report, we describe a complex world of chromium species and their reactivity with DNA and other biologically relevant molecules in vitro to inform a more complete understanding of Cr(VI)-mediated toxicity. In addition, we discuss previous results in the context of in vitro models and analytical methods to reconcile some conflicting findings on the biological role of chromium species.
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Affiliation(s)
- R Mezencev
- Center for Public Health and Environmental Assessment, Office of Research and Development, US EPA, Washington, DC, USA
| | - C Gibbons
- Center for Public Health and Environmental Assessment, Office of Research and Development, US EPA, Washington, DC, USA
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Alguacil FJ, Robla JI. Transport of Chromium(VI) across a Supported Liquid Membrane Containing Cyanex 921 or Cyanex 923 Dissolved in Solvesso 100 as Carrier Phase: Estimation of Diffusional Parameters. MEMBRANES 2023; 13:177. [PMID: 36837680 PMCID: PMC9965649 DOI: 10.3390/membranes13020177] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 01/26/2023] [Accepted: 01/27/2023] [Indexed: 06/18/2023]
Abstract
An investigation of chromium(VI) transport across a supported liquid membrane containing the phosphine oxides Cyanex 921 and Cyanex 923 dissolved in Solvesso 100 as carrier phases was carried out in batch operation mode. Chromium(VI) transport was investigated as a function of different variables: hydrodynamic conditions in the feed (1000-1600 min-1) and stripping (600-1500 min-1) phases, HCl (0.25-2 M) and indium (0.01-0.1 g/L) concentrations in the feed phase, and carrier (0.01 M-0.75 M) concentration in the membrane phase. Indium was recovered in the stripping phase using hydrazine sulphate solutions, and, at the same time, chromium(VI) was reduced to the less harmful Cr(III) oxidation state. Models describing the transport mechanism comprising a diffusion process through the feed aqueous diffusion layer, fast interfacial chemical reaction, and diffusion of the respective chromium(VI)-phosphine oxide complexes across the membrane were developed. The equations describing the rate of transport correlate the membrane permeability coefficient with diffusion and equilibrium parameters, as well as the chemical compositions of the respective metal-carrier phases. The models were used to calculate diffusional parameters for each metal-carrier system, and the minimum thickness of the feed boundary layer was calculated as 1 × 10-3 cm and 6.3 × 10-4 cm for the Cr(VI)-Cyanex 921 and Cr(VI)-Cyanex 923 systems, respectively.
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6
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Multicomponent isotherm modeling of hexavalent chromium and fluoride ions simultaneous removal using rice husk derived activated carbon (RHDAC) electrode. J INDIAN CHEM SOC 2023. [DOI: 10.1016/j.jics.2023.100900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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7
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Walter M, Schenkeveld WD, Tomatis M, Schelch K, Peter-Vörösmarty B, Geroldinger G, Gille L, Bruzzoniti MC, Turci F, Kraemer SM, Grusch M. The Potential Contribution of Hexavalent Chromium to the Carcinogenicity of Chrysotile Asbestos. Chem Res Toxicol 2022; 35:2335-2347. [PMID: 36410050 PMCID: PMC9768810 DOI: 10.1021/acs.chemrestox.2c00314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Chrysotile asbestos is a carcinogenic mineral that has abundantly been used in industrial and consumer applications. The carcinogenicity of the fibers is partly governed by reactive Fe surface sites that catalyze the generation of highly toxic hydroxyl radicals (HO•) from extracellular hydrogen peroxide (H2O2). Chrysotile also contains Cr, typically in the low mass permille range. In this study, we examined the leaching of Cr from fibers at the physiological lung pH of 7.4 in the presence and absence of H2O2. Furthermore, we investigated the potential of cells from typical asbestos-burdened tissues and cancers to take up Cr leached from chrysotile in PCR expression, immunoblot, and cellular Cr uptake experiments. Finally, the contribution of Cr to fiber-mediated H2O2 decomposition and HO• generation was studied. Chromium readily dissolved from chrysotile fibers in its genotoxic and carcinogenic hexavalent redox state upon oxidation by H2O2. Lung epithelial, mesothelial, lung carcinoma, and mesothelioma cells expressed membrane-bound Cr(VI) transporters and accumulated Cr up to 10-fold relative to the Cr(VI) concentration in the spiked medium. Conversely, anion transporter inhibitors decreased cellular Cr(VI) uptake up to 45-fold. Finally, chromium associated with chrysotile neither decomposed H2O2 nor contributed to fiber-mediated HO• generation. Altogether, our results support the hypothesis that Cr may leach from inhaled chrysotile in its hexavalent state and subsequently accumulate in cells of typically asbestos-burdened tissues, which could contribute to the carcinogenicity of chrysotile fibers. However, unlike Fe, Cr did not significantly contribute to the adverse radical production of chrysotile.
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Affiliation(s)
- Martin Walter
- Department
of Environmental Geosciences, University
of Vienna, Althanstraße
14 (UZA II), 1090Vienna, Austria
| | - Walter D.C. Schenkeveld
- Department
of Environmental Geosciences, University
of Vienna, Althanstraße
14 (UZA II), 1090Vienna, Austria,
| | - Maura Tomatis
- Department
of Veterinary Sciences, University of Torino, L.go Paolo Braccini, 2, Grugliasco, 10095 (TO), Italy,“G.Scansetti”
Interdepartmental Center for Studies of Asbestos and Other Toxic Particulates, Via Pietro Giuria, 7, 10125Torino, Italy
| | - Karin Schelch
- Center
for Cancer Research, Medical University
of Vienna, Borschkegasse 8a, 1090Vienna, Austria
| | | | - Gerald Geroldinger
- Institute
of Pharmacology and Toxicology, University of Veterinary Medicine, Vienna, Veterinärplatz 1, 1210Vienna, Austria
| | - Lars Gille
- Institute
of Pharmacology and Toxicology, University of Veterinary Medicine, Vienna, Veterinärplatz 1, 1210Vienna, Austria
| | - Maria C. Bruzzoniti
- Department
of Chemistry, University of Torino, Via Pietro Giuria, 7, 10125Torino, Italy
| | - Francesco Turci
- “G.Scansetti”
Interdepartmental Center for Studies of Asbestos and Other Toxic Particulates, Via Pietro Giuria, 7, 10125Torino, Italy,Department
of Chemistry, University of Torino, Via Pietro Giuria, 7, 10125Torino, Italy
| | - Stephan M. Kraemer
- Department
of Environmental Geosciences, University
of Vienna, Althanstraße
14 (UZA II), 1090Vienna, Austria
| | - Michael Grusch
- Center
for Cancer Research, Medical University
of Vienna, Borschkegasse 8a, 1090Vienna, Austria
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Basnet P, Gyawali D, Nath Ghimire K, Paudyal H. An assessment of the lignocellulose-based biosorbents in removing Cr(VI) from contaminated water: A critical review. RESULTS IN CHEMISTRY 2022. [DOI: 10.1016/j.rechem.2022.100406] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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9
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Samuel MS, Selvarajan E, Chidambaram R, Patel H, Brindhadevi K. Clean approach for chromium removal in aqueous environments and role of nanomaterials in bioremediation: Present research and future perspective. CHEMOSPHERE 2021; 284:131368. [PMID: 34225115 DOI: 10.1016/j.chemosphere.2021.131368] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2020] [Revised: 06/14/2021] [Accepted: 06/26/2021] [Indexed: 05/25/2023]
Abstract
Chromium is an insidious ecological pollutant that is of huge value for its toxicity. The existing ecological objective to lower the heights of toxic materials in marine systems and to stimulate the existing water to recycle after suitable treatment of wastewater. Chromium is a hazard element that appears in discharges of numerous industries that must be diminished to accomplish the goals. Nearly all of the findings described in the literature related to the usage of various materials such as fungal, algal, bacterial biomass, and nanomaterials for chromium adsorption. The current work evaluates the findings of research commenced in the preceding on the use of a variety of adsorbents to decrease chromium concentrations in contaminated waters. This review article focuses on the issue of chromium contamination, its chemistry, causes, consequences, biological agent remediation techniques, and the detailed process of chromium detoxification in microbial cells. It also lists a description of the in situ and ex situ chromium bioremediation methods used. This can help design more effective Cr(VI) removal methods, thus bridging the difference between laboratory discoveries and industrial chromium remediation applications.
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Affiliation(s)
- Melvin S Samuel
- Department of Materials Science and Engineering, CEAS, University of Wisconsin-Milwaukee, Milwaukee, WI, 53211, United States
| | - E Selvarajan
- Department of Genetic Engineering, School of Bioengineering, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu, India
| | | | - Himanshu Patel
- Applied Science and Humanities Department, Pacific School of Engineering, Kadodara, Palasana Road, Surat, 394305, Gujarat, India
| | - Kathirvel Brindhadevi
- Faculty of Electrical and Electronics Engineering, Ton Duc Thang University, Ho Chi Minh City, Viet Nam.
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Poonia T, Singh N, Garg MC. Contamination of Arsenic, Chromium and Fluoride in the Indian groundwater: a review, meta-analysis and cancer risk assessment. INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY 2021; 18:2891-2902. [DOI: 10.1007/s13762-020-03043-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2020] [Revised: 10/09/2020] [Accepted: 11/23/2020] [Indexed: 08/20/2024]
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Mahmoud ME, El-Sharkawy RM, Ibrahim GAA. Promoted adsorptive removal of chromium(vi) ions from water by a green-synthesized hybrid magnetic nanocomposite (NFe 3O 4Starch-Glu-NFe 3O 4ED). RSC Adv 2021; 11:14829-14843. [PMID: 35424003 PMCID: PMC8697855 DOI: 10.1039/d1ra00961c] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Accepted: 03/28/2021] [Indexed: 12/23/2022] Open
Abstract
A novel magnetic starch-crosslinked-magnetic ethylenediamine nanocomposite, NFe3O4Starch-Glu-NFe3O4ED, was synthesized via microwave irradiation. The characteristics of the assembled NFe3O4Starch-Glu-NFe3O4ED nanocomposite were evaluated via XRD, FT-IR, TGA, BET, SEM and HR-TEM analyses. Its particle size was confirmed to be in the range 11.25-17.16 nm. The effectiveness of the designed nanocomposite for the removal of Cr(vi) ions was explored using the batch adsorption technique. Equilibrium results proved that the adsorptive removal of the target metal ions from aqueous solution was highly dependent on the optimized experimental parameters. The maximum adsorptive removal percentage values (%R) of Cr(vi) ions on NFe3O4Starch-Glu-NFe3O4ED obtained at pH 2.0 were 85.27%, 91.90%, and 96.47% using 10.0, 25.0, and 50.0 mg L-1 Cr(vi), respectively, for an equilibrium time of 30 min. The adsorption process was found to be strongly influenced by the presence of interfering salts including NaCl, CaCl2, KCl, MgCl2, and NH4Cl. Kinetic studies were performed and it was found that the pseudo-second and Elovich models well fitted the experimental data with the possible suggested ion-pair interaction mechanism. Different isotherm models were employed to assess the adsorption equilibrium, which was revealed by fitting Langmuir, Temkin and Freundlich models. The maximum uptake capacity based on the Langmuir model was 210.741 mg g-1. The effect of temperature and thermodynamics confirmed that adsorption was spontaneous, feasible, and endothermic in nature. Finally, the validity and applicability of using the NFe3O4Starch-Glu-NFe3O4ED nanocomposite to remove Cr(vi) ions from real water matrices were confirmed in the range of 91.2-94.7 ± 2.2-3.7%.
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Affiliation(s)
- Mohamed E Mahmoud
- Faculty of Science, Chemistry Department, Alexandria University P.O. Box 426, Ibrahimia 21321 Alexandria Egypt
| | - Rehab M El-Sharkawy
- Faculty of Dentistry, Chemistry Department, Pharos University in Alexandria P.O. Box 37, SidiGaber Alexandria Egypt +20-1229727752
| | - Ghada A A Ibrahim
- Faculty of Education, Chemistry and Physics Department, Alexandria University El-Shatby Alexandria Egypt
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Brumovský M, Oborná J, Lacina P, Hegedüs M, Sracek O, Kolařík J, Petr M, Kašlík J, Hofmann T, Filip J. Sulfidated nano-scale zerovalent iron is able to effectively reduce in situ hexavalent chromium in a contaminated aquifer. JOURNAL OF HAZARDOUS MATERIALS 2021; 405:124665. [PMID: 33301974 DOI: 10.1016/j.jhazmat.2020.124665] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Revised: 11/04/2020] [Accepted: 11/21/2020] [Indexed: 06/12/2023]
Abstract
In a number of laboratory studies, sulfidated nanoscale zero-valent iron (S-nZVI) particles showed increased reactivity, reducing capacity, and electron selectivity for Cr(VI) removal from contaminated waters. In our study, core-shell S-nZVI particles were successfully injected into an aquifer contaminated with Cr(VI) at a former chrome plating facility. S-nZVI migrated towards monitoring wells, resulting in a rapid decrease in Cr(VI) and Crtot concentrations and a long-term decrease in groundwater redox potential observed even 35 m downstream the nearest injection well. Characterization of materials recovered from the injection and monitoring wells confirmed the presence of nZVI particles, together with iron corrosion products. Chromium was identified on the surface of the recovered iron particles as Cr(III), and its occurrence was linked to the formation of insoluble chromium-iron (oxyhydr)oxides such as CrxFe(1-x)(OH)3(s). Injected S-nZVI particles formed aggregates, which were slowly transformed into iron (oxyhydr)oxides and carbonate green rust. Elevated contents of Fe0 were detected even several months after injection, indicating good S-nZVI longevity. The sulfide shell was gradually disintegrated and/or dissolved. Geochemical modelling confirmed the overall stability of the resulting Cr(III) phase at field conditions. This study demonstrates the applicability of S-nZVI for the remediation of a Cr(VI)-contaminated aquifer.
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Affiliation(s)
- Miroslav Brumovský
- Regional Centre of Advanced Technologies and Materials, Palacký University Olomouc, Šlechtitelů 27, 783 71 Olomouc, Czech Republic; Department of Environmental Geosciences (EDGE), Centre for Microbiology and Environmental Systems Science, University of Vienna, Althanstr. 14, UZA II, 1090 Vienna, Austria.
| | - Jana Oborná
- Regional Centre of Advanced Technologies and Materials, Palacký University Olomouc, Šlechtitelů 27, 783 71 Olomouc, Czech Republic
| | - Petr Lacina
- GEOtest, a.s., Šmahova 1244/112, 627 00 Brno, Czech Republic
| | - Michal Hegedüs
- GEOtest, a.s., Šmahova 1244/112, 627 00 Brno, Czech Republic; Institute of Environmental and Chemical Engineering, Faculty of Chemical Technology, University of Pardubice, Studentská 95, 532 10 Pardubice, Czech Republic
| | - Ondra Sracek
- Department of Geology, Faculty of Science, Palacký University Olomouc, 17. listopadu 12, 771 46 Olomouc, Czech Republic
| | - Jan Kolařík
- Regional Centre of Advanced Technologies and Materials, Palacký University Olomouc, Šlechtitelů 27, 783 71 Olomouc, Czech Republic
| | - Martin Petr
- Regional Centre of Advanced Technologies and Materials, Palacký University Olomouc, Šlechtitelů 27, 783 71 Olomouc, Czech Republic
| | - Josef Kašlík
- Regional Centre of Advanced Technologies and Materials, Palacký University Olomouc, Šlechtitelů 27, 783 71 Olomouc, Czech Republic
| | - Thilo Hofmann
- Department of Environmental Geosciences (EDGE), Centre for Microbiology and Environmental Systems Science, University of Vienna, Althanstr. 14, UZA II, 1090 Vienna, Austria
| | - Jan Filip
- Regional Centre of Advanced Technologies and Materials, Palacký University Olomouc, Šlechtitelů 27, 783 71 Olomouc, Czech Republic.
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Uhlein GJ, Caxito FA, Frei R, Uhlein A, Sial AN, Dantas EL. Microbially induced chromium isotope fractionation and trace elements behavior in lower Cambrian microbialites from the Jaíba Member, Bambuí Basin, Brazil. GEOBIOLOGY 2021; 19:125-146. [PMID: 33347697 DOI: 10.1111/gbi.12426] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2020] [Revised: 10/29/2020] [Accepted: 11/29/2020] [Indexed: 06/12/2023]
Abstract
In east-central Brazil, the Ediacaran-Cambrian Bambuí Basin has the potential to provide a record of unique geochemical responses of Earth's ocean and atmosphere evolution during this key time interval. From this perspective, we studied an interval of the upper Bambuí Basin using sedimentologic, stratigraphic, and chemostratigraphic tools. The lower Cambrian Jaíba Member of the uppermost Serra da Saudade Formation is an interval of up to 60 m-thick of carbonate rocks disposed into two shallowing upward trends. Inner to outer ramp and high-energy shoal deposits are described, in which laminated microbialites are the prevailing sedimentary facies. REE + Y data suggest contamination by iron (oxy)hydroxides that are dissociated from the riverine detritic flux. Sedimentary iron enrichment may be related to the settling of iron nanoparticles in coastal environments, diagenetic iron mobilization, or both. MREE enrichment is caused by microbial degradation of organic matter in the iron reduction zone during the anoxic early-diagenetic stage. Chromium isotopes yielded negatively fractionated values (δ53 Cr = -0.69 to -0.27‰), probably resulting from biotic and abiotic reduction of dissolved Cr(VI) to light and less toxic Cr(III) within pores of microbial mats. The δ53 Cr data of the Jaíba microbialite are thus a product of metabolic reactions in microbial mats and do not reflect seawater signal. The isotopic offset from seawater is feasible from molecular diffusion of Cr into pore water and reduction reactions occurring deep inside the mat, although the exact mechanism and consequences are not yet fully understood due to the poor preservation of metabolic reactions in the geological record. Our study suggests that Cr isotopes can be used to reconstruct Cr and other metals cycling within ancient microbial mats, and that caution should be taken when using past microbialites to infer seawater Cr records and redox state of the atmosphere and ocean.
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Affiliation(s)
- Gabriel J Uhlein
- Centro de Pesquisas Manoel Teixeira da Costa, Instituto de Geociências, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Fabrício A Caxito
- Centro de Pesquisas Manoel Teixeira da Costa, Instituto de Geociências, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Robert Frei
- Department of Geoscience and Natural Resource Management, University of Copenhagen, Copenhagen, Denmark
| | - Alexandre Uhlein
- Centro de Pesquisas Manoel Teixeira da Costa, Instituto de Geociências, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Alcides N Sial
- Departamento de Geologia, NEG-LABISE, Universidade Federal de Pernambuco, Recife, Brazil
| | - Elton L Dantas
- Instituto de Geociências, Universidade de Brasília, Brasília, Brazil
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14
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Dvoynenko O, Lo SL, Chen YJ, Chen GW, Tsai HM, Wang YL, Wang JK. Speciation Analysis of Cr(VI) and Cr(III) in Water with Surface-Enhanced Raman Spectroscopy. ACS OMEGA 2021; 6:2052-2059. [PMID: 33521444 PMCID: PMC7841920 DOI: 10.1021/acsomega.0c05020] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Accepted: 12/30/2020] [Indexed: 05/16/2023]
Abstract
Identifying and quantifying chromium in water are important for the protection of precious water resources from chromium pollution. Standard methods however are unable to easily distinguish toxic hexavalent chromium, Cr(VI), from innocuous trivalent chromium, Cr(III), are time-consuming, or require large sample quantity. We show in this report that Cr(VI) and Cr(III) in water can be differentiated based on their distinct spectral features of surface-enhanced Raman scattering (SERS). Their SERS signals exhibit different pH dependences: the SERS features of Cr(VI) and Cr(III) are most prominent at pH values of 10 and 5.5, respectively. The obtained limit of detection of Cr(VI) in water is below 0.1 mg/L. Both concentration curves of their SERS signals show Langmuir sorption isotherm behavior. A procedure was developed to quantify Cr(VI) concentration based on the direct retrieval or addition method with an error of 10%. Finally, the SERS detection of Cr(VI) is shown to be insensitive to co-present Cr(III). The developed SERS procedure offers potential to monitor toxic chromium in fields.
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Affiliation(s)
- Olga Dvoynenko
- Institute
of Atomic and Molecular Sciences, Academia
Sinica, Taipei 10617, Taiwan
| | - Shih-Lin Lo
- Environmental
Analytical Laboratory, Environmental Protection Administration, Taoyuan City 32024, Taiwan
| | - Yi-Ju Chen
- Environmental
Analytical Laboratory, Environmental Protection Administration, Taoyuan City 32024, Taiwan
| | - Guan Wei Chen
- Institute
of Atomic and Molecular Sciences, Academia
Sinica, Taipei 10617, Taiwan
| | - Hsin-Mei Tsai
- Institute
of Atomic and Molecular Sciences, Academia
Sinica, Taipei 10617, Taiwan
| | - Yuh-Lin Wang
- Institute
of Atomic and Molecular Sciences, Academia
Sinica, Taipei 10617, Taiwan
- Department
of Physics, National Taiwan University, Taipei 10699, Taiwan
| | - Juen-Kai Wang
- Institute
of Atomic and Molecular Sciences, Academia
Sinica, Taipei 10617, Taiwan
- Center
for Condensed Matter Sciences, National
Taiwan University, Taipei 10699, Taiwan
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15
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Wu J, Yan M, Lv S, Yin W, Bu H, Liu L, Li P, Deng H, Zheng X. Preparation of highly dispersive and antioxidative nano zero-valent iron for the removal of hexavalent chromium. CHEMOSPHERE 2021; 262:127733. [PMID: 32763574 DOI: 10.1016/j.chemosphere.2020.127733] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 07/11/2020] [Accepted: 07/14/2020] [Indexed: 06/11/2023]
Abstract
In this study, carboxymethyl cellulose (CMC) was employed to stabilize zero-valent iron nanoparticles (CMC-nFe0) to improve their dispersity and antioxidation for enhanced hexavalent chromium (Cr(VI)) removal. Scanning electron microscope (SEM) observation revealed that the nFe0 agglomerated in clusters, while the CMC-nFe0 connected as chains and presented higher dispersity. Therefore, compared with 54% of the nFe0, the Cr(VI) removal rate of the CMC-nFe0 increased by 0.8 time, reaching 97%. Besides, the nFe0 precipitated in 1 d and was obviously oxidized within 7 d under anoxic condition, leading to a rapid decease of Cr(VI) removal efficiency from 54% to 3% in 56 d. In contrast, the CMC-nFe0 showed no obvious subsidence and oxidized phenomenon within 14 d, which retained a relatively high Cr(VI) removal efficiency of 63% in 56 d, contributing to effective blockage of dissolved oxygen infiltrating from solution to nFe0 particles in presence of CMC. After reaction, the valence state distribution of Cr between solution and material surface indicated that Cr(VI) reduction was dominant comparing to physical adsorption to particles in the remediation process conducted by CMC-nFe0. In addition, lower initial pH and higher iron dosage facilitated Cr(VI) removal. Those results indicated that the dispersive and antioxidative characteristics of CMC-nFe0 were significantly superior to those of nFe0, and CMC stabilization thereafter can be a promising method to promote Cr(VI) elimination by nFe0.
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Affiliation(s)
- Jinhua Wu
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China.
| | - Mingjia Yan
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China
| | - Sihao Lv
- School of Chemistry and Environmental Engineering, Dongguan University of Technology, Dongguan, 523808, China
| | - Weizhao Yin
- School of Environment, Jinan University, Guangzhou, 510632, China
| | - Huaitian Bu
- SINTEF Industry, Department of Materials and Nanotechnology, Forskningsveien 1, 0373, Oslo, Norway
| | - Li Liu
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China
| | - Ping Li
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China
| | - Hong Deng
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China
| | - Xiangyu Zheng
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China; The Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou, 510006, China; The Key Laboratory of Environmental Protection and Eco-Remediation of Guangdong Regular Higher Education Institutions, Guangzhou, 510006, China
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16
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Gaikwad MS, Balomajumder C, Tiwari AK. Acid treated RHWBAC electrode performance for Cr(VI) removal by capacitive deionization and CFD analysis study. CHEMOSPHERE 2020; 254:126781. [PMID: 32335438 DOI: 10.1016/j.chemosphere.2020.126781] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 04/05/2020] [Accepted: 04/11/2020] [Indexed: 05/17/2023]
Abstract
In this work acid-treated activated carbon was developed from rice husk, and it was used as raw material for Capacitive deionization (CDI) electrodes. The prepared acid treated rice husk waste biomass activated carbon (RHWBAC) electrode was used for the electrosorption of Cr(VI) from the aqueous medium. This RHWBAC electrode shows maximum electrosorption capacity was 2.8316 mg g-1 of initial feed concentration 100 mg L-1 at 1.2 V. The result shows that the electrosorption method follows Redlich Peterson isotherm, Langmuir isotherm model, and Pseudo first order kinetic model. The computational fluid dynamics (CFD) analysis of square CDI cell design shows that the stagnant regions decreases by increasing the flow rate of feed. The present work concluded that the RHWBAC could be capable electrode material for Cr(VI) sorption from low concentrated aqueous feed.
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Affiliation(s)
- Mahendra S Gaikwad
- Department of Chemical Engineering, Dharmsinh Desai University, Nadiad, 387001, Gujarat, India.
| | - Chandrajit Balomajumder
- Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, 247667, Uttarakhand, India.
| | - Anand K Tiwari
- Department of Chemical Engineering, Dharmsinh Desai University, Nadiad, 387001, Gujarat, India
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17
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Colorimetric speciation of Cr on paper-based analytical devices based on field amplified stacking. Talanta 2020; 210:120635. [DOI: 10.1016/j.talanta.2019.120635] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Revised: 12/06/2019] [Accepted: 12/08/2019] [Indexed: 01/23/2023]
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18
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Shrivastava KC, Pandey SP, Kumar SA, Pandey AK, Debnath AK, Srivastava AP, Patkare GR, Abraham GJ. Remediation of chromium(VI) ions as chromium oxide xerogel via gamma-radiolysis of aqueous waste discharge. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2019.116291] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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19
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Hiller MM, Leggett RW. A biokinetic model for trivalent or hexavalent chromium in adult humans. JOURNAL OF RADIOLOGICAL PROTECTION : OFFICIAL JOURNAL OF THE SOCIETY FOR RADIOLOGICAL PROTECTION 2020; 40:19-39. [PMID: 31834868 DOI: 10.1088/1361-6498/ab4286] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Chromium exists in several oxidation states, with the trivalent state (Cr(III)) being the dominant naturally occurring form. Chromium in other oxidation states tends to be converted to the trivalent oxide in the natural environment and in biological systems. Chromium(III) has been shown to be an essential nutrient for humans and several non-human species. Chromium(VI), the second most stable form of chromium, is an important environmental contaminant that is mostly of industrial origin and is associated with lung cancer and nose tumours in chromium workers. This paper proposes a biokinetic model for chromium that addresses the distinctive behaviours of Cr(III) and Cr(VI) following uptake to blood of an adult human. The model is based on biokinetic data derived from relatively short-term studies involving administration of chromium tracers to adult human subjects or laboratory animals, supplemented with data on the long-term distribution of chromium in adult humans as estimated from autopsy measurements. The model is part of a comprehensive update of biokinetic models of the International Commission on Radiological Protection, used to project or evaluate radiation doses from occupational intake of radionuclides.
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20
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The Sealing Step in Aluminum Anodizing: A Focus on Sustainable Strategies for Enhancing Both Energy Efficiency and Corrosion Resistance. COATINGS 2020. [DOI: 10.3390/coatings10030226] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Increasing demands for environmental accountability and energy efficiency in industrial practice necessitates significant modification(s) of existing technologies and development of new ones to meet the stringent sustainability demands of the future. Generally, development of required new technologies and appropriate modifications of existing ones need to be premised on in-depth appreciation of existing technologies, their limitations, and desired ideal products or processes. In the light of these, published literature mostly in the past 30 years on the sealing process; the second highest energy consuming step in aluminum anodization and a step with significant environmental impacts has been critical reviewed in this systematic review. Emphasis have been placed on the need to reduce both the energy input in the anodization process and environmental implications. The implications of the nano-porous structure of the anodic oxide on mass transport and chemical reactivity of relevant species during the sealing process is highlighted with a focus on exploiting these peculiarities, in improving the quality of sealed products. In addition, perspective is provided on plausible approaches and important factors to be considered in developing sealing procedures that can minimize the energy input and environmental impact of the sealing step, and ensure a more sustainable aluminum anodization process/industry.
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21
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Coagulation mechanism of cellulose/metal nanohybrids through a simple one-step process and their interaction with Cr (VI). Int J Biol Macromol 2020; 142:404-411. [DOI: 10.1016/j.ijbiomac.2019.09.112] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Revised: 08/27/2019] [Accepted: 09/15/2019] [Indexed: 11/18/2022]
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22
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Jiang C, Sun R, Du Z, Singh V, Chen S. A cationic Zr-based metal organic framework with enhanced acidic resistance for selective and efficient removal of CrO42−. NEW J CHEM 2020. [DOI: 10.1039/d0nj02279a] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A Zr-based cationic metal organic framework shows high acidic resistance and selectivity to the anion contaminant, CrO42−.
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Affiliation(s)
- Chao Jiang
- Radiochemistry Lab
- School of Nuclear Science and Technology
- Lanzhou University
- Lanzhou
- P. R. China
| | - Ruopei Sun
- Radiochemistry Lab
- School of Nuclear Science and Technology
- Lanzhou University
- Lanzhou
- P. R. China
| | - Ziyao Du
- Radiochemistry Lab
- School of Nuclear Science and Technology
- Lanzhou University
- Lanzhou
- P. R. China
| | - Vikramjeet Singh
- Nanoengineered Systems Laboratory
- UCL Mechanical Engineering
- University College London
- London
- UK
| | - Suwen Chen
- Radiochemistry Lab
- School of Nuclear Science and Technology
- Lanzhou University
- Lanzhou
- P. R. China
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23
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Islam MA, Angove MJ, Morton DW. Recent innovative research on chromium (VI) adsorption mechanism. ACTA ACUST UNITED AC 2019. [DOI: 10.1016/j.enmm.2019.100267] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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24
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Bill M, Conrad ME, Faybishenko B, Larsen JT, Geller JT, Borglin SE, Beller HR. Use of carbon stable isotopes to monitor biostimulation and electron donor fate in chromium-contaminated groundwater. CHEMOSPHERE 2019; 235:440-446. [PMID: 31272004 DOI: 10.1016/j.chemosphere.2019.06.056] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Revised: 06/06/2019] [Accepted: 06/08/2019] [Indexed: 06/09/2023]
Abstract
Hexavalent chromium Cr(VI) is a common inorganic contaminant in industrial areas and represents a serious threat to human health due its toxicity. Here we report experimental results from a field-scale investigation of Cr(VI) bio-immobilization at Hanford 100H reservation, a U.S Department of Energy facility (Washington State, USA). Microbial Cr(VI) reduction was stimulated via injection of a13C-labeled sodium lactate solution into the high-permeability aquifer consisting of gravel and coarse sand sediments. Concentrations and carbon isotope ratios of metabolites, including dissolved inorganic carbon and total organic carbon, and compound-specific analysis of acetate and propionate, together with phospholipid fatty acids (biomass) have been analyzed to help provide an understanding of the predominant redox processes accompanying Cr(VI) reduction. Results of our study indicate that the injection of an electron donor caused a sharp decrease of Cr(VI) concentration from ∼32 to ∼10 nM. Cr(VI) reduction was associated with a decrease in the concentration of carboxylic acids, such as lactate (∼6 mM to undetectable), propionate (∼9 mM to undetectable), and acetate (∼6 mM to undetectable), as well as dissolved inorganic carbon (30-10 mM C). Carbon isotope data indicate carbon transfers from the original substrate to organic byproducts and mineralized carbon. Concentrations of metabolites and stable isotope data as well as carbon isotope mass balance calculations were used to monitor biologically mediated reduction of Cr(VI).
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Affiliation(s)
- Markus Bill
- Earth and Environmental Sciences, Lawrence Berkeley National Laboratory, Berkeley, CA, USA.
| | - Mark E Conrad
- Earth and Environmental Sciences, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - Boris Faybishenko
- Earth and Environmental Sciences, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - Joern T Larsen
- Apple Inc., Environmental Technologies Group, 1 Apple Park Way, Cupertino, CA, USA
| | - Jil T Geller
- Earth and Environmental Sciences, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - Sharon E Borglin
- Earth and Environmental Sciences, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - Harry R Beller
- Earth and Environmental Sciences, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
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25
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Kim HB, Kim JG, Kim SH, Kwon EE, Baek K. Consecutive reduction of Cr(VI) by Fe(II) formed through photo-reaction of iron-dissolved organic matter originated from biochar. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 253:231-238. [PMID: 31310873 DOI: 10.1016/j.envpol.2019.07.026] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Revised: 06/27/2019] [Accepted: 07/05/2019] [Indexed: 06/10/2023]
Abstract
Employing biochar for environmental remediation has been widely practiced. Nonetheless, the reduction mechanisms of hexavalent chromium (Cr(VI)) in the presence of biochar have not been fully elucidated (i.e., direct or indirect reduction of Cr(VI) by biochar). In particular, the effect of light on Cr(VI) reduction by biochar was rarely reported. Thus, to clarify the reduction mechanisms of Cr(VI) by biochar at the fundamental level, this study laid great emphasis on the photo-induced reduction of Cr(VI) in the application of biochar. Biochar releases dissolved organic matter (DOM), the DOM can extract Fe(III) from soil by complexation, and the complexes can be photo-reacted under the light. In these respects, Fe(II) formed by the photo-induced reaction of DOM-Fe(III) was particularly evaluated in this study. To evaluate that, three biomass samples (rice straw, granular sludge from an up-flow anaerobic sludge blanket, and spent coffee ground) were torrefied to biochar. To circumvent the adsorption of Cr(VI) onto biochar, biochar extractives (served as a source for DOM) and Fe(III) solution were tested with/without UV light to prove Fe(II) formation. This study experimentally proved that the more Fe(II) under the UV radiation was formed in the co-existence with biochar extractives and Fe(III). All experimental data from three biochar samples were indeed very similar. Cr(VI) reduction by Fe(II) from GB, RB, and CB reached up to 96, 79, and 100%, respectively. The different reduction efficiency signified that the low molecular weight of organic acids, such as oxalate, were more sensitive to the UV light, thereby resulting in the enhanced Fe(II) formation. Such Fe(II) formation subsequently led to the high reduction efficiency of Cr(VI).
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Affiliation(s)
- Hye-Bin Kim
- Department of Environmental Engineering and Soil Environment Research Center, Chonbuk National University, Jeonju, Jeollabukdo 57896, Republic of Korea
| | - Jong-Gook Kim
- Department of Environmental Engineering and Soil Environment Research Center, Chonbuk National University, Jeonju, Jeollabukdo 57896, Republic of Korea
| | - Seon-Hee Kim
- K-WATER, Water Quality Center, Daejeon 34350, Republic of Korea
| | - Eilhann E Kwon
- Department of Environment and Energy, Sejong University, Seoul 05006, Republic of Korea
| | - Kitae Baek
- Department of Environmental Engineering and Soil Environment Research Center, Chonbuk National University, Jeonju, Jeollabukdo 57896, Republic of Korea.
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26
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Negatively-charged nanofiltration membrane and its hexavalent chromium removal performance. J Colloid Interface Sci 2019; 553:475-483. [DOI: 10.1016/j.jcis.2019.06.051] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Revised: 06/06/2019] [Accepted: 06/16/2019] [Indexed: 11/24/2022]
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27
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Devoy J, Cosnier F, Bonfanti E, Antoine G, Nunge H, Lambert-Xolin AM, Décret MJ, Douteau L, Lorcin M, Sébillaud S, Grossmann S, Michaux S, Müller S, Viton S, Seidel C, Gaté. L. Intra-erythrocyte chromium as an indicator of exposure to hexavalent chromium: An in vivo evaluation in intravenous administered rat. Toxicol Lett 2019; 314:133-141. [DOI: 10.1016/j.toxlet.2019.07.020] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Revised: 07/05/2019] [Accepted: 07/15/2019] [Indexed: 11/16/2022]
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28
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Maitlo HA, Kim KH, Kumar V, Kim S, Park JW. Nanomaterials-based treatment options for chromium in aqueous environments. ENVIRONMENT INTERNATIONAL 2019; 130:104748. [PMID: 31252168 DOI: 10.1016/j.envint.2019.04.020] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Revised: 03/18/2019] [Accepted: 04/08/2019] [Indexed: 05/27/2023]
Abstract
Sustainable development and the restoration of ecosystems are the important goals for civilization. Currently, heavy metal contamination of aquatic environments has become a serious issue. Chromium (Cr) is simultaneously an essential metallic element and one of 20 chemicals posing a maximum threat to living beings. To mitigate that threat, various treatment methods have been developed, including adsorption, electrocoagulation, photoelectrocatalysis, fuel cells, bioremediation, chemical precipitation, ultrafiltration, ion exchange, and co-precipitation. However, selection of the most energy- and cost-efficient wastewater treatment option has proven challenging, as each approach is subject to shortcomings involving energy consumption, treatment capacity, and efficiency. This review describes the potential role of diverse functional nanomaterials (e.g., iron/iron oxide nanoparticles, carbon nanostructures, metal organic frameworks, and their commercial counterparts) in treatment of Cr in aqueous environments with respect to key figure of merits, such as, adsorption capacity, removal efficiency, and partition coefficient. In addition, their performance was compared with the most common treatment options. The results of this study will help determine the most effective and economical options for control of Cr in aquatic environments.
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Affiliation(s)
- Hubdar Ali Maitlo
- Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-Gu, Seoul 04763, Republic of Korea
| | - Ki-Hyun Kim
- Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-Gu, Seoul 04763, Republic of Korea.
| | - Vanish Kumar
- National Agri-Food Biotechnology Institute (NABI), S.A.S. Nagar 140306, Punjab, India.
| | - Sumin Kim
- Department of Architecture and Architectural Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Jae-Woo Park
- Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-Gu, Seoul 04763, Republic of Korea
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29
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Howell CA, Mikhalovsky SV, Markaryan EN, Khovanov AV. Investigation of the adsorption capacity of the enterosorbent Enterosgel for a range of bacterial toxins, bile acids and pharmaceutical drugs. Sci Rep 2019; 9:5629. [PMID: 30948767 PMCID: PMC6449336 DOI: 10.1038/s41598-019-42176-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Accepted: 03/26/2019] [Indexed: 12/27/2022] Open
Abstract
Oral intestinal adsorbents (enterosorbents) are orally administered materials which pass through the gut where they bind (adsorb) various substances. The enterosorbent Enterosgel (Polymethylsiloxane polyhdrate) is recommended as a symptomatic treatment for acute diarrhoea and chronic diarrhoea associated with irritable bowel syndrome (IBS). Since 1980’s there have been many Enterosgel clinical trials, however, the detailed mechanism of Enterosgel action towards specific toxins and interaction with concomitantly administered medications has not been fully investigated. Our in vitro study assessed the adsorption capacity of Enterosgel for bacterial enterotoxins and endotoxin, bile acids and interaction with the pharmaceutical drugs; Cetirizine and Amitriptyline hydrochloride. Our data demonstrate the good adsorption capacity of Enterosgel for bacterial toxins associated with gastrointestinal infection, with a lower than the comparator charcoal Charcodote capacity for bile acids whose levels can be raised in IBS patients. Adsorption capacity for the two drugs varied but was significantly lower than Charcodote. These findings suggest that the mechanism of Enterosgel action in the treatment of gastrointestinal infection or IBS is adsorption of target molecules followed by removal from the body. This therapy offers a drug free approach to prevention and treatment of infectious and chronic non-infectious diseases, where intestinal flora and endotoxemia play a role.
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Affiliation(s)
- Carol A Howell
- University of Brighton, School of Pharmacy & Biomolecular Sciences, Brighton, BN2 4GJ, UK. .,Enteromed Ltd, London, W1W 7LT, UK.
| | - Sergey V Mikhalovsky
- ANAMAD Ltd, Science Park Square, Brighton, BN1 9SB, UK.,SD Asfendiyarov Kazakh National Medical University, Almaty, 050000, Kazakhstan
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30
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Cherdchoo W, Nithettham S, Charoenpanich J. Removal of Cr(VI) from synthetic wastewater by adsorption onto coffee ground and mixed waste tea. CHEMOSPHERE 2019; 221:758-767. [PMID: 30684773 DOI: 10.1016/j.chemosphere.2019.01.100] [Citation(s) in RCA: 69] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Revised: 01/12/2019] [Accepted: 01/16/2019] [Indexed: 05/14/2023]
Abstract
We attempted to recycle mixed waste tea and coffee ground as alternative low-cost adsorbents for Cr(VI) removal. The adsorption parameters optimized were: initial Cr(VI) concentration (10-30 mg L-1), contact time (180 min), adsorbent dose (2.0 g L-1), initial pH (2.0), temperature (30-50 °C), and agitation speed (250 rpm). Freundlich isotherm was found better fitted with a high correlation coefficient (R2 = 0.97 for mixed waste tea and 0.92 for coffee ground) than to Langmuir model (R2 = 0.89 for mixed waste tea and 0.86 for coffee ground) for the 10-250 mg L-1 concentration range. Analysis of kinetic studies indicated that Cr(VI) adsorption by both adsorbents was consistent with the pseudo-second-order kinetic model with a good R2 and Marquardt's present standard deviation (MPSD) values. Experimental data demonstrated a sorption capacity of 94.34 mg g-1 of mixed waste tea and 87.72 mg g-1 of coffee ground. Scanning electron microscopy (SEM), Transmission electron microscopy (TEM) and Energy dispersive X-ray spectroscopy (EDS) revealed the noticeable chromium accumulation on the adsorbent surfaces after adsorption. Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS) studies showed that carbon and oxygen functional groups on the surface of both adsorbents involved in Cr(VI) adsorption. The adsorbents could be reused four times. Large-scale operation using 100 L of packed-bed reactor showed the breakthrough time of adsorption for mixed waste tea of 30 min in 100 mg L-1 Cr(VI) concentration. These results suggested that mixed waste tea and coffee ground be considered as alternative adsorbent for Cr(VI) removal.
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Affiliation(s)
- Wachiraphorn Cherdchoo
- Bioengineering Program, Faculty of Engineering, Burapha University, Bangsaen, Chon Buri 20131, Thailand
| | - Srisuda Nithettham
- Bioengineering Program, Faculty of Engineering, Burapha University, Bangsaen, Chon Buri 20131, Thailand; Department of Chemical Engineering, Faculty of Engineering, Burapha University, Bangsaen, Chon Buri 20131, Thailand
| | - Jittima Charoenpanich
- Bioengineering Program, Faculty of Engineering, Burapha University, Bangsaen, Chon Buri 20131, Thailand; Department of Biochemistry, Faculty of Science, Burapha University, Bangsaen, Chon Buri 20131, Thailand.
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31
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Removal mechanism for chromium (VI) in groundwater with cost-effective iron-air fuel cell electrocoagulation. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2018.12.058] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Zhuang YT, Chen S, Jiang R, Yu YL, Wang JH. Ultrasensitive Colorimetric Chromium Chemosensor Based on Dye Color Switching under the Cr(VI)-Stimulated Au NPs Catalytic Activity. Anal Chem 2019; 91:5346-5353. [DOI: 10.1021/acs.analchem.9b00339] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Yu-Ting Zhuang
- Research Center for Analytical Sciences, Department of Chemistry, College of Sciences, Northeastern University, Box 332, Shenyang 110819, P. R. China
| | - Shuai Chen
- College of Life and Health Science, Northeastern University, Shenyang 110169, P. R. China
| | - Rui Jiang
- Research Center for Analytical Sciences, Department of Chemistry, College of Sciences, Northeastern University, Box 332, Shenyang 110819, P. R. China
| | - Yong-Liang Yu
- Research Center for Analytical Sciences, Department of Chemistry, College of Sciences, Northeastern University, Box 332, Shenyang 110819, P. R. China
| | - Jian-Hua Wang
- Research Center for Analytical Sciences, Department of Chemistry, College of Sciences, Northeastern University, Box 332, Shenyang 110819, P. R. China
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33
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Saha B, Pal KK. Kinetics and Mechanism of 1,10-Phenanthroline Catalysed Chromium(VI) Oxidation of D-Glucose in Aqueous Micellar Media. PROGRESS IN REACTION KINETICS AND MECHANISM 2019. [DOI: 10.3184/007967405779133994] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The kinetics and mechanism of CrVI oxidation of D-glucose in the presence and absence of 1,10-phenanthroline (phen) in aqueous acid media have been studied under the conditions, [sugar]T ≥ [CrVI]T at different temperatures. The monomeric species of CrVI has been found to be kinetically active in the absence of phen whereas in the phen-catalysed path, the CrVI - phen complexes have been found to be the active oxidants. Both the paths show a first order dependence on [sugar]T and [CrVI]T. The uncatalysed path shows a second order dependence on [H+], while the catalysed path shows a first order dependence on [H+]. The phen-catalysed path is first-order in [phen]T. These observations remain unaltered in the presence of externally added surfactants. CPC inhibits both pathways while SDS catalyses the reactions.
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Affiliation(s)
- Bidyut Saha
- Department of Chemistry, The University of Burdwan, Golapbag, Burdwan - 713104, WB, India
| | - Kalyan K. Pal
- Department of Chemistry, Hetampur K.C College, Hetampur - 731124, Birbhum, WB, India
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Laysandra L, Santosa FH, Austen V, Soetaredjo FE, Foe K, Putro JN, Ju YH, Ismadji S. Rarasaponin-bentonite-activated biochar from durian shells composite for removal of crystal violet and Cr(VI) from aqueous solution. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:30680-30695. [PMID: 30178408 DOI: 10.1007/s11356-018-3104-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Accepted: 08/28/2018] [Indexed: 06/08/2023]
Abstract
This paper presents the preparation of composite material and its application for the adsorption of crystal violet and Cr(VI) from aqueous solution onto acid-activated bentonite (AAB) and rarasaponin-bentonite-activated biochar from durian shells composite (RBAB). The influence of initial pH of the solution and the temperature of adsorption on the adsorbents adsorption performance was also studied. Langmuir and Freundlich models could represent the adsorption equilibria equally well. Thermodynamic parameters such as ∆G°, ∆H°, and ∆S° were evaluated based on the adsorption isotherms. The values of ∆G°, ∆H°, and ∆S° for crystal violet adsorption system demonstrate behavior contrary to the Cr(VI) adsorption system. Where crystal violet adsorption is preferred at high temperatures with qmax, value is 518.64 mg/L; while adsorption Cr(VI) is better at low temperature with qmax, value is 106.30 mg/L. Pseudo-first-order and pseudo-second-order kinetic models could represent the kinetic data well.
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Affiliation(s)
- Livy Laysandra
- Department of Chemical Engineering, Widya Mandala Surabaya Catholic University, Kalijudan 37, Surabaya, 60114, Indonesia
| | - Felix Harijaya Santosa
- Department of Chemical Engineering, Widya Mandala Surabaya Catholic University, Kalijudan 37, Surabaya, 60114, Indonesia
| | - Vic Austen
- Department of Chemical Engineering, Widya Mandala Surabaya Catholic University, Kalijudan 37, Surabaya, 60114, Indonesia
- Intan Permata Hati, Raya Kedung Baruk No.112 - 114, Surabaya, 60298, Indonesia
| | - Felycia Edi Soetaredjo
- Department of Chemical Engineering, Widya Mandala Surabaya Catholic University, Kalijudan 37, Surabaya, 60114, Indonesia.
| | - Kuncoro Foe
- Widya Mandala Surabaya Catholic University, Pakuwon City, Kalisari 1, Surabaya, 60112, Indonesia
| | - Jindrayani Nyoo Putro
- Department of Chemical Engineering, National Taiwan University of Science and Technology, No. 43, Sec 4, Keelung Rd, Da'an District, Taipei City, 106, Taiwan
| | - Yi-Hsu Ju
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, No. 43, Sec 4, Keelung Rd,. Da'an District, Taipei City, 106, Taiwan
| | - Suryadi Ismadji
- Department of Chemical Engineering, Widya Mandala Surabaya Catholic University, Kalijudan 37, Surabaya, 60114, Indonesia.
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35
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Graphene-based materials as solid phase extraction sorbent for chromium(VI) determination in red wine. Microchem J 2018. [DOI: 10.1016/j.microc.2018.05.043] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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36
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Naseer A, Jamshaid A, Hamid A, Muhammad N, Ghauri M, Iqbal J, Rafiq S, khuram S, Shah NS. Lignin and Lignin Based Materials for the Removal of Heavy Metals from Waste Water-An Overview. ACTA ACUST UNITED AC 2018. [DOI: 10.1515/zpch-2018-1209] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Abstract
Water Pollution through heavy metals is the concerned issue as many industries like tanning, steel production and electroplating are the major contributors. Various toxic Heavy metals are a matter of concern as they have severe environmental and health effects. Most commonly, conventional methods are using to remove these heavy metals like precipitation, ion exchange, which are not economical and have disposal issues. Adsorption of heavy metals by different low-cost adsorbents seems to be the best option in wastewater treatment. Many agricultural by-products proved to be suitable as low-cost adsorbents for removing heavy metals efficiently in a minimum time. Lignin residues that involves both agricultural and wood residues and sometimes separated out from black liquor through precipitation have adsorption capacity and affinity comparable to other natural adsorbents. However, lignin as bio adsorbents have the advantage of less cost and gives efficient adsorption results. This study is a review of the recent literature on the use of natural lignin residues for heavy metals adsorption under different experimental scenarios.
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Affiliation(s)
- Ayesha Naseer
- Department of Environmental Sciences/Chemistry , Kinnaird College for Women , Lahore , Pakistan
| | - Anum Jamshaid
- Department of Environmental Sciences/Chemistry , Kinnaird College for Women , Lahore , Pakistan
| | - Almas Hamid
- Department of Environmental Sciences/Chemistry , Kinnaird College for Women , Lahore , Pakistan
| | - Nawshad Muhammad
- Interdisciplinary Research Centre in Biomedical Materials (IRCBM), COMSATS Institute of Information Technology , Lahore , Pakistan
| | - Moinuddin Ghauri
- Department of Chemical Engineering , COMSATS Institute of Information Technology , Lahore , Pakistan
| | - Jibran Iqbal
- College of Natural and Health Sciences , Zayed University , 144534 Abu Dhabi , United Arab Emirates , Tel.: +971559188346
| | - Sikander Rafiq
- Department of Chemical Engineering , COMSATS Institute of Information Technology , Lahore , Pakistan
| | - Shahzad khuram
- Department of Chemical Engineering , COMSATS Institute of Information Technology , Lahore , Pakistan
| | - Noor Samad Shah
- Department of Environmental Sciences , COMSATS Institute of Information Technology , Vehari , Pakistan
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37
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Adsorptive Removal of Hexavalent Chromium by Diphenylcarbazide-Grafted Macadamia Nutshell Powder. Bioinorg Chem Appl 2018; 2018:6171906. [PMID: 29849541 PMCID: PMC5933043 DOI: 10.1155/2018/6171906] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Accepted: 03/15/2018] [Indexed: 11/24/2022] Open
Abstract
Macadamia nutshell powder oxidized by hydrogen peroxide solutions (MHP) was functionalized by immobilizing 1,5′-diphenylcarbazide (DPC) on its surface. The effectiveness of grafting was confirmed by the Fourier transform infrared spectrum due to the presence of NH and C=C stretches at 3361, 1591, and 1486 cm−1, respectively, on the grafted material which were absent in the nongrafted material. Thermogravimetric analysis revealed that the presence of DPC on the surface of Macadamia shells lowered the thermal stability from 300°C to about 180°C owing to the volatile nature of DPC. Surface roughness as a result of grafting was appreciated on the scanning electron microscopy images. Parameters influencing the adsorptive removal of Cr(VI) were examined and found to be optimal at pH 2, 120 min, 150 mg/L, and 2.5 g/L. Grafting MHP with DPC leads to an increase in the Langmuir monolayer capacity from 37.74 to 72.12 mg/g. Grafting MHP with DPC produced adsorbent with improved removal efficiency for Cr(VI).
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Kazemi M, Jahanshahi M, Peyravi M. Hexavalent chromium removal by multilayer membrane assisted by photocatalytic couple nanoparticle from both permeate and retentate. JOURNAL OF HAZARDOUS MATERIALS 2018; 344:12-22. [PMID: 29031091 DOI: 10.1016/j.jhazmat.2017.09.059] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2017] [Revised: 09/20/2017] [Accepted: 09/30/2017] [Indexed: 06/07/2023]
Abstract
In this study, a novel photocatalytic thin film nanocomposite (TFC) membrane was prepared for removal of hexavalent chromium (Cr(VI)) from aqueous solution. In this regards, a TFC membrane was modified by a layer of chitosan as an adsorbent and then was coated with a layer of synthesized photocatalytic nanoscale zerovalent iron@titanium dioxide (nZVI@TiO2) nanoparticles via layer-by-layer (LBL) technology. Prepared membranes were characterized by X-ray diffraction (XRD), energy dispersive X-ray spectroscopy (EDX), field emission scanning electron microscopy (FESEM), atomic force microscopy (AFM) and contact angle analysis. The Cr(VI) removal efficiency of the membranes was evaluated by batch removal and dynamic filtration tests. The water flux was increased from 26.2 to 39.7l/m2h as a consequence of improved hydrophilicity which was approved by contact angle analysis. The modified TFC membrane has shown the significant removal of Cr(VI) in retentate as well as the permeate stream. Further, the Cr(VI) removal of retentate flow decreased with increasing pH and feed concentration whereas the Cr(VI) removal of permeate was enhanced with increasing initial feed concentration. Increasing the flux recovery from 62% (for neat TFC) to 87% (for modified TFC membrane) demonstrated that the modification of membrane improved the anti-fouling property of the modified membrane.
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Affiliation(s)
- Maryamossadat Kazemi
- Nanotechnology Research Institute, Babol Noshirvani University of Technology, Shariati Ave., Post Code: 47148-71167, Babol, Iran
| | - Mohsen Jahanshahi
- Nanotechnology Research Institute, Babol Noshirvani University of Technology, Shariati Ave., Post Code: 47148-71167, Babol, Iran
| | - Majid Peyravi
- Nanotechnology Research Institute, Babol Noshirvani University of Technology, Shariati Ave., Post Code: 47148-71167, Babol, Iran.
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39
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Rajyalaxmi K, Merugu R, Girisham S, Reddy SM. Chromate Reduction by Purple Non Sulphur Phototrophic Bacterium Rhodobacter sp. GSKRLMBKU–03 Isolated from Pond Water. ACTA ACUST UNITED AC 2017. [DOI: 10.1007/s40011-017-0939-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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40
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Synthesis of magnetic biochar from iron sludge for the enhancement of Cr (VI) removal from solution. J Taiwan Inst Chem Eng 2017. [DOI: 10.1016/j.jtice.2017.07.002] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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41
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Gaikwad MS, Balomajumder C. Simultaneous electrosorptive removal of chromium(VI) and fluoride ions by capacitive deionization (CDI): Multicomponent isotherm modeling and kinetic study. Sep Purif Technol 2017. [DOI: 10.1016/j.seppur.2017.06.017] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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42
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Antifouling zwitterionic hydrogel coating improves hemocompatibility of activated carbon hemoadsorbent. J Colloid Interface Sci 2017; 503:168-177. [DOI: 10.1016/j.jcis.2017.04.024] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Revised: 04/06/2017] [Accepted: 04/07/2017] [Indexed: 11/17/2022]
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43
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Gaikwad MS, Balomajumder C. Tea waste biomass activated carbon electrode for simultaneous removal of Cr(VI) and fluoride by capacitive deionization. CHEMOSPHERE 2017; 184:1141-1149. [PMID: 28672695 DOI: 10.1016/j.chemosphere.2017.06.074] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2017] [Revised: 06/16/2017] [Accepted: 06/17/2017] [Indexed: 06/07/2023]
Abstract
Capacitive deionization is promising less energy based desalination technique to achieve pure water. In the present study microporous activated carbon was prepared from tea waste biomass by chemical and thermal modification. Further TWBAC was used for preparation of the electrode. The TWBAC electrode was applied in the self-made CDI set up for simultaneous removal of hexavalent chromium [Cr(VI)] and fluoride (F) form mixed feed solution of Cr(VI) and F. The performance of TWBAC electrode was found effective for simultaneous removal of Cr(VI) and F from mixed feed solution. The maximum electrosorption capacity of Cr(VI) and F were found 0.77 and 0.74 mg g-1 for 10 mg L-1 and 2.83 and 2.49 mg g-1 for 100 mg L-1 mixed feed solution respectively. The higher removal of Cr(VI) was found due to the electrosorption selectivity of the divalent CrO42- is higher than that of the monovalent F-. Multicomponent isotherm modeling and kinetic study were carried out in this study. TWBAC CDI electrode could be useful for treatment of a low concentrated Cr(VI) and F containing wastewater.
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Affiliation(s)
- Mahendra S Gaikwad
- Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India.
| | - Chandrajit Balomajumder
- Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India.
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44
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Saravanakumar K, Karthik R, Chen SM, Vinoth Kumar J, Prakash K, Muthuraj V. Construction of novel Pd/CeO2/g-C3N4 nanocomposites as efficient visible-light photocatalysts for hexavalent chromium detoxification. J Colloid Interface Sci 2017; 504:514-526. [DOI: 10.1016/j.jcis.2017.06.003] [Citation(s) in RCA: 94] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Revised: 05/24/2017] [Accepted: 06/02/2017] [Indexed: 11/16/2022]
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45
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Zhong L, Lai CY, Shi LD, Wang KD, Dai YJ, Liu YW, Ma F, Rittmann BE, Zheng P, Zhao HP. Nitrate effects on chromate reduction in a methane-based biofilm. WATER RESEARCH 2017; 115:130-137. [PMID: 28273443 DOI: 10.1016/j.watres.2017.03.003] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2016] [Revised: 02/27/2017] [Accepted: 03/01/2017] [Indexed: 06/06/2023]
Abstract
The effects of nitrate (NO3-) on chromate (Cr(VI)) reduction in a membrane biofilm reactor (MBfR) were studied when CH4 was the sole electron donor supplied with a non-limiting delivery capacity. A high surface loading of NO3- gave significant and irreversible inhibition of Cr(VI) reduction. At a surface loading of 500 mg Cr/m2-d, the Cr(VI)-removal percentage was 100% when NO3- was absent (Stage 1), but was dramatically lowered to < 25% with introduction of 280 mg N m-2-d NO3- (Stage 2). After ∼50 days operation in Stage 2, the Cr(VI) reduction recovered to only ∼70% in Stage 3, when NO3- was removed from the influent; thus, NO3- had a significant long-term inhibition effect on Cr(VI) reduction. Weighted PCoA and UniFrac analyses proved that the introduction of NO3- had a strong impact on the microbial community in the biofilms, and the changes possibly were linked to the irreversible inhibition of Cr(VI) reduction. For example, Meiothermus, the main genus involved in Cr(VI) reduction at first, declined with introduction of NO3-. The denitrifier Chitinophagaceae was enriched after the addition of NO3-, while Pelomonas became important when nitrate was removed, suggesting its potential role as a Cr(VI) reducer. Moreover, introducing NO3- led to a decrease in the number of genes predicted (by PICRUSt) to be related to chromate reduction, but genes predicted to be related to denitrification, methane oxidation, and fermentation increased.
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Affiliation(s)
- Liang Zhong
- Department of Environmental Engineering, College of Environmental and Resource Science, Zhejiang University, Hangzhou, China
| | - Chun-Yu Lai
- Department of Environmental Engineering, College of Environmental and Resource Science, Zhejiang University, Hangzhou, China; Zhejiang Province Key Lab Water Pollut Control & Envi, Zhejiang University, Hangzhou, Zhejiang, China
| | - Ling-Dong Shi
- Department of Environmental Engineering, College of Environmental and Resource Science, Zhejiang University, Hangzhou, China
| | - Kai-Di Wang
- Department of Environmental Engineering, College of Environmental and Resource Science, Zhejiang University, Hangzhou, China
| | - Yu-Jie Dai
- Department of Environmental Engineering, College of Environmental and Resource Science, Zhejiang University, Hangzhou, China
| | - Yao-Wei Liu
- Department of Environmental Engineering, College of Environmental and Resource Science, Zhejiang University, Hangzhou, China
| | - Fang Ma
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China.
| | - Bruce E Rittmann
- Biodesign Swette Center for Environmental Biotechnology, Arizona State University, P.O. Box 875701, Tempe, AZ 85287-5701, USA
| | - Ping Zheng
- Department of Environmental Engineering, College of Environmental and Resource Science, Zhejiang University, Hangzhou, China; Zhejiang Province Key Lab Water Pollut Control & Envi, Zhejiang University, Hangzhou, Zhejiang, China
| | - He-Ping Zhao
- Department of Environmental Engineering, College of Environmental and Resource Science, Zhejiang University, Hangzhou, China; Zhejiang Province Key Lab Water Pollut Control & Envi, Zhejiang University, Hangzhou, Zhejiang, China; State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China.
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46
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The kinetic and thermodynamic study of the removal of Cr(VI) ion from aqueous solution by human hair waste. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2017. [DOI: 10.1007/s13738-017-1115-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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47
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Banerjee M, Bar N, Basu RK, Das SK. Comparative study of adsorptive removal of Cr(VI) ion from aqueous solution in fixed bed column by peanut shell and almond shell using empirical models and ANN. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:10604-10620. [PMID: 28283971 DOI: 10.1007/s11356-017-8582-8] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2016] [Accepted: 02/06/2017] [Indexed: 06/06/2023]
Abstract
Cr(VI) is a toxic water pollutant, which causes cancer and mutation in living organisms. Adsorption has become the most preferred method for removal of Cr(VI) due to its high efficiency and low cost. Peanut and almond shells were used as adsorbents in downflow fixed bed continuous column operation for Cr(VI) removal. The experiments were carried out to scrutinise the adsorptive capacity of the peanut shells and almond shells, as well as to find out the effect of various operating parameters such as column bed depth (5-10 cm), influent flow rate (10-22 ml min-1) and influent Cr(VI) concentration (10-20 mg L-1) on the Cr(VI) removal. The fixed bed column operation for Cr(VI) adsorption the equilibrium was illustrated by Langmuir isotherm. Different well-known mathematical models were applied to the experimental data to identify the best-fitted model to explain the bed dynamics. Prediction of the bed dynamics by Yan et al. model was found to be satisfactory. Applicability of artificial neural network (ANN) modelling is also reported. An ANN modelling of multilayer perceptron with gradient descent and Levenberg-Marquardt algorithms have also been tried to predict the percentage removal of Cr(VI). This study indicates that these adsorbents have an excellent potential and are useful for water treatment particularly small- and medium-sized industries of third world countries. Almond shell represents better adsorptive capacity as breakthrough time and exhaustion time are longer in comparison to peanut shell.
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Affiliation(s)
- Munmun Banerjee
- Chemical Engineering Department, University of Calcutta, 92, APC Road, Kolkata, 700009, India
| | - Nirjhar Bar
- Chemical Engineering Department, University of Calcutta, 92, APC Road, Kolkata, 700009, India
| | - Ranjan Kumar Basu
- Chemical Engineering Department, University of Calcutta, 92, APC Road, Kolkata, 700009, India
| | - Sudip Kumar Das
- Chemical Engineering Department, University of Calcutta, 92, APC Road, Kolkata, 700009, India.
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48
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Xiao Z, Zhang H, Xu Y, Yuan M, Jing X, Huang J, Li Q, Sun D. Ultra-efficient removal of chromium from aqueous medium by biogenic iron based nanoparticles. Sep Purif Technol 2017. [DOI: 10.1016/j.seppur.2016.10.047] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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49
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Li LL, Feng XQ, Han RP, Zang SQ, Yang G. Cr(VI) removal via anion exchange on a silver-triazolate MOF. JOURNAL OF HAZARDOUS MATERIALS 2017; 321:622-628. [PMID: 27694026 DOI: 10.1016/j.jhazmat.2016.09.029] [Citation(s) in RCA: 135] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2016] [Revised: 08/07/2016] [Accepted: 09/12/2016] [Indexed: 06/06/2023]
Abstract
Gram-scale synthesis of a silver-triazolato framework - {[Ag8(tz)6](NO3)2·6H2O}n (1-NO3; tz-=3,5-diphenyl-1,2,4-triazolate) - has been achieved, enabling the systematic investigation of its anion-exchange properties. Our experimental results show that the anion-exchange pattern of 1-NO3 conforms to the so-called Hofmeister bias, which has been correlated to the hydrophobic nature of the MOF pores, and can be understood by considering the difference between the hydration energies of the exchanging anions. Furthermore, 1-NO3 displays a fast, efficient, and reversible adsorption of HCrO4- (via anion-exchange) from Cr(VI)-containing aqueous solution (Qmax=37.0 Cr mg/g, 303K), rendering it a promising prototype of a recyclable MOF for Cr(VI) removal.
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Affiliation(s)
- Li-Li Li
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, China
| | - Xiao-Quan Feng
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, China
| | - Run-Ping Han
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, China
| | - Shuang-Quan Zang
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, China
| | - Guang Yang
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, China.
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Pakade VE, Nchoe OB, Hlungwane L, Tavengwa NT. Sequestration of hexavalent chromium from aqueous solutions by activated carbon derived from Macadamia nutshells. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2017; 75:196-206. [PMID: 28067660 DOI: 10.2166/wst.2016.506] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The purpose of this study was to investigate the feasibility of activated carbons prepared from Macadamia nutshells as an efficient adsorbent for the removal of hexavalent chromium (Cr(VI)) from aqueous solutions. The activated carbon was characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), CHNS analyzer and Brunauer-Emmett-Teller (BET). For effective removal of Cr(VI), the optimum parameters found were pH 2, 120 min of contact time and 0.2 g of sorbent. The adsorption data fitted well into the Freundlich model, suggesting a multilayer sorption process. The results demonstrated that Macadamia activated carbon could be used as cost-effective biosorbent for the treatment of aqueous solutions contaminated by Cr(VI) with an adsorption capacity of 22.3 mg g-1. The mode of removal involved adsorption and reduction of Cr(VI) to Cr(III).
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Affiliation(s)
- V E Pakade
- Department of Chemistry, Faculty of Applied and Computer Sciences, Vaal University of Technology, Private Bag x 021, Vanderbijlpark 1900, South Africa E-mail:
| | - O B Nchoe
- Department of Chemistry, Faculty of Applied and Computer Sciences, Vaal University of Technology, Private Bag x 021, Vanderbijlpark 1900, South Africa E-mail:
| | - L Hlungwane
- Department of Chemistry, Faculty of Applied and Computer Sciences, Vaal University of Technology, Private Bag x 021, Vanderbijlpark 1900, South Africa E-mail:
| | - N T Tavengwa
- Molecular Sciences Institute, School of Chemistry, University of the Witwatersrand, Private Bag 3, Johannesburg 2050, South Africa
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