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Aravind MK, Kappen J, Narayanamoorthi E, Sanjaykumar A, Varalakshmi P, Arockiadoss T, John SA, Ashokkumar B. Bioengineered magnetic graphene oxide microcomposites for bioremediation of chromium in ex situ - A novel strategy for aggrandized recovery by electromagnetic gadgetry. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 308:119675. [PMID: 35753546 DOI: 10.1016/j.envpol.2022.119675] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 06/01/2022] [Accepted: 06/20/2022] [Indexed: 06/15/2023]
Abstract
Novel magnetic microcomposites consisting of graphene oxide and iron oxide was synthesized to immobilize metabolically versatile Paracoccus sp. MKU1 and Leucobacter sp. AA7 and tested for the simultaneous adsorption and enhanced biological detoxification of hexavalent chromium (Cr(VI)) from tannery wastewater. This study reports highest chromium adsorption of 272.6 mg/g and 179.3 mg/g with complete reduction of Cr(VI) to Cr(III) by the microcomposites of AA7 and MKU1 from wastewater in a bioreactor (10 L) at large-scale for first time in ex situ. Furthermore, both the microcomposites displayed an enhanced detoxification of tannery wastewater by reducing various physicochemical conditions such as ammonia, nitrate, TDS, fluoride, CaCO3, Ca, Mg, NO3 and SO2 under the permissible limits. Use of electromagnetic device for magnetic microcomposites recovery from bioreactor yielded a maximum of 88% and 80.6% recovery for AA7 and MKU1, respectively. The rate of chromium recuperation achieved following desorption from the microcomposites of AA7 and MKU1 was 90.71% and 93.97%, respectively. Thus, the multifarious benefits including adsorption, metabolic detoxification, recovery, and recuperation by single functional microcomposites seems to be an intriguing and profitable approach for practicing in real-time operations to effectively remove heavy metals from the contaminated wastewater for environmental protection.
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Affiliation(s)
- Manikka Kubendran Aravind
- Department of Genetic Engineering, School of Biotechnology, Madurai Kamaraj University, Madurai, Tamil Nadu, India
| | - Jincymol Kappen
- Centre for Nanoscience and Nanotechnology, Department of Chemistry, Gandhigram Rural Institute, Gandhigram, Tamil Nadu, India
| | - Eswaran Narayanamoorthi
- Centre for Nanoscience and Nanotechnology, Department of Chemistry, Gandhigram Rural Institute, Gandhigram, Tamil Nadu, India
| | - Ashokkumar Sanjaykumar
- Department of Biotechnology, Bannari Amman Institute of Technology, Sathyamangalam, Tamil Nadu, India
| | - Perumal Varalakshmi
- Department of Molecular Microbiology, School of Biotechnology, Madurai Kamaraj University, Madurai, Tamil Nadu, India
| | | | - Swamidoss Abraham John
- Centre for Nanoscience and Nanotechnology, Department of Chemistry, Gandhigram Rural Institute, Gandhigram, Tamil Nadu, India
| | - Balasubramaniem Ashokkumar
- Department of Genetic Engineering, School of Biotechnology, Madurai Kamaraj University, Madurai, Tamil Nadu, India.
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Natarajan N, Vasudevan M, Kumar GS. Confronting heterogeneous sorption and hydrodynamic dispersion on solute transport in a fracture-skin-matrix system using spatial moment analysis. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:51095-51116. [PMID: 34817821 DOI: 10.1007/s11356-021-17712-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Accepted: 11/19/2021] [Indexed: 06/13/2023]
Abstract
Understanding the intricacies of inter-dependency of fluid flow and solute transfer at the scale of a single fracture is limited by various simplifying assumptions employed for computational purposes. In the present study, the fracture-rock matrix interface is assumed to be consisting of a skin layer with sufficient mass transfer properties where non-linear adsorption is considered to be the limiting reaction among the various interfaces. A numerical model has been developed using implicit finite difference method with varying grids at the fracture-skin interface to capture the mass transfer during solute transport in the presence of non-linear Sips adsorption. The model was used to identify the critically influencing parameters on the temporal profiles of fluid velocity, macro-dispersion coefficient and dispersivity using the method of spatial moments. The results indicate that the presence of the skin has enhanced the mixing phenomenon as well as the sorptive mass transfer rates. Summary of the sensitivity analysis provides the critical factors to be considered while employing such comprehensive models for elucidating details at a small scale. The presence of fracture-skin evades the sensitive role played by (a) the fracture adsorption coefficient (with a reduced rate constant for adsorption and an increased rate constant for desorption) at early times, while resulting in an enhanced mixing characteristics at later times, and (b) maximum sorption capacity of fracture as a function of solute velocity; and in turn, it provides an improved control over the transportation of solutes through the fracture.
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Affiliation(s)
- Narayanan Natarajan
- Department of Civil Engineering, Dr. Mahalingam College of Engineering and Technology, Pollachi, 642003, Tamil Nadu, India.
| | - Mangottiri Vasudevan
- Smart and Healthy Infrastructure Laboratory, Department of Civil Engineering, Bannari Amman Institute of Technology, Sathyamangalam, 638402, Tamil Nadu, India
| | - Govindarajan Suresh Kumar
- Reservoir Simulation Laboratory, Petroleum Engineering Programme, Department of Ocean Engineering, Indian Institute of Technology-Madras, Chennai, 600036, Tamil Nadu, India
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Xing SC, Chen JY, Cai YF, Huang CB, Liao XD, Mi JD. Bacillus coagulans R11 consumption influenced the abundances of cecum antibiotic resistance genes in lead-exposed laying hens. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 274:116562. [PMID: 33545525 DOI: 10.1016/j.envpol.2021.116562] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Revised: 01/17/2021] [Accepted: 01/18/2021] [Indexed: 06/12/2023]
Abstract
Bacillus coagulans is regarded as a clean, safe and helpful probiotic additive in the production of livestock and poultry breeds. Some studies have also shown that Bacillus coagulans can adsorb heavy metals in water, even in the gut of animals. However, whether Bacillus coagulans feeding influences antibiotic resistance gene (ARG) abundance in the gut of lead-exposed laying hens is unknown. To better apply such probiotics in the breeding industry, the present study employed Bacillus coagulans R11 and laying hens in model experiments to test ARG changes in the cecum of laying hens under lead exposure and B. coagulans R11 feeding. The results showed that there was the trend for ARG abundance decreasing in feeding B. coagulans R11 without lead exposure to laying hens in the cecum; however, feeding B. coagulans R11 to laying hens exposed to lead obviously increased the abundances of aminoglycoside and chloramphenicol ARGs. Further experiment found that hydroquinone, dodecanedioic acid, gibberellin A14, alpha-solanine, jasmonic acid and chitin were involved in the abundances of ARGs in the cecum, in addition the abundances of these compounds were also significantly enhanced by lead exposure or combination effects of lead and B. coagulans R11. As a result, the ARG hazards increased with feeding B. coagulans R11 to laying hens exposed to lead, and the key compounds which influenced by the combination effects of lead and B. coagulans R11 might influence the ARGs abundance.
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Affiliation(s)
- Si-Cheng Xing
- College of Animal Science, South China Agricultural University, Guangzhou, 510642, China; Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding, And Key Laboratory of Chicken Genetics, Breeding and Reproduction, Ministry Agriculture, Guangzhou, 510642, Guangdong, China; National-Local Joint Engineering Research Center for Livestock Breeding, Guangzhou, 510642, Guangdong, China.
| | - Jing-Yuan Chen
- College of Animal Science, South China Agricultural University, Guangzhou, 510642, China.
| | - Ying-Feng Cai
- College of Animal Science, South China Agricultural University, Guangzhou, 510642, China.
| | - Chun-Bo Huang
- College of Animal Science, South China Agricultural University, Guangzhou, 510642, China.
| | - Xin-Di Liao
- College of Animal Science, South China Agricultural University, Guangzhou, 510642, China; Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding, And Key Laboratory of Chicken Genetics, Breeding and Reproduction, Ministry Agriculture, Guangzhou, 510642, Guangdong, China; National-Local Joint Engineering Research Center for Livestock Breeding, Guangzhou, 510642, Guangdong, China.
| | - Jian-Dui Mi
- College of Animal Science, South China Agricultural University, Guangzhou, 510642, China; Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding, And Key Laboratory of Chicken Genetics, Breeding and Reproduction, Ministry Agriculture, Guangzhou, 510642, Guangdong, China; National-Local Joint Engineering Research Center for Livestock Breeding, Guangzhou, 510642, Guangdong, China.
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Chu KH. Exponential and logistic functions: The two faces of the Bohart-Adams model. JOURNAL OF HAZARDOUS MATERIALS 2020; 389:122025. [PMID: 31928789 DOI: 10.1016/j.jhazmat.2020.122025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Revised: 12/31/2019] [Accepted: 01/03/2020] [Indexed: 06/10/2023]
Affiliation(s)
- Khim Hoong Chu
- Honeychem, Nanjing Chemical Industry Park, Nanjing 210047, China.
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Ajao V, Nam K, Chatzopoulos P, Spruijt E, Bruning H, Rijnaarts H, Temmink H. Regeneration and reuse of microbial extracellular polymers immobilised on a bed column for heavy metal recovery. WATER RESEARCH 2020; 171:115472. [PMID: 31931379 DOI: 10.1016/j.watres.2020.115472] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Revised: 12/20/2019] [Accepted: 01/03/2020] [Indexed: 06/10/2023]
Abstract
Microbial extracellular polymeric substances (EPS) have gained increasing attention for various water treatment applications. In this study, EPS produced from nitrogen-limited glycerol/ethanol-rich wastewater were used to recover Cu2+ and Pb2+ from aqueous solutions. Continuous flow-through tests were conducted on a column packed with silica gel coated with polyethyleneimine, to which EPS were irreversibly attached as shown by optical reflectometry. These immobilised EPS excellently adsorbed Cu2+ and Pb2+, with 99.9% of influent metal adsorbed before the breakthrough points. Metal desorption was achieved with 0.1M HCl, with an average recovery of 86% for Cu2+ and 90% recovery for Pb2+. For the first time, we successfully showed the possibility to regenerate and reuse the immobilised EPS for five adsorption-desorption cycles (using Cu2+ as an example) with no reduction in the adsorbed amount at the breakthrough point (qbp). Based on the mass balance of the associated metal ions participating in the adsorption process, ion exchange was identified as the major mechanism responsible for Cu2+ and Pb2+ adsorption by EPS. The results demonstrate the potential of wastewater-produced EPS as an attractive and perhaps, cost-effective biosorbent for heavy metal removal (to trace effluent concentrations) and recovery (86-99%).
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Affiliation(s)
- Victor Ajao
- Wetsus - European Centre of Excellence for Sustainable Water Technology, Oostergoweg 9, 8911 MA, Leeuwarden, the Netherlands; Sub-department of Environmental Technology, Wageningen University and Research, Bornse Weilanden 9, 6708 WG, Wageningen, the Netherlands.
| | - Kang Nam
- School of Life Sciences and Environmental Technology, Avans University of Applied Science, Breda, the Netherlands
| | - Paraschos Chatzopoulos
- Wetsus - European Centre of Excellence for Sustainable Water Technology, Oostergoweg 9, 8911 MA, Leeuwarden, the Netherlands
| | - Evan Spruijt
- Institute for Molecules and Materials, Radboud University, Heyendaalseweg 135, 6525 AJ, Nijmegen, the Netherlands
| | - Harry Bruning
- Sub-department of Environmental Technology, Wageningen University and Research, Bornse Weilanden 9, 6708 WG, Wageningen, the Netherlands
| | - Huub Rijnaarts
- Sub-department of Environmental Technology, Wageningen University and Research, Bornse Weilanden 9, 6708 WG, Wageningen, the Netherlands
| | - Hardy Temmink
- Wetsus - European Centre of Excellence for Sustainable Water Technology, Oostergoweg 9, 8911 MA, Leeuwarden, the Netherlands; Sub-department of Environmental Technology, Wageningen University and Research, Bornse Weilanden 9, 6708 WG, Wageningen, the Netherlands
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Xing SC, Mi JD, Chen JY, Xiao L, Wu YB, Liang JB, Zhang LH, Liao XD. The metabolism and morphology mutation response of probiotic Bacillus coagulans for lead stress. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 693:133490. [PMID: 31635006 DOI: 10.1016/j.scitotenv.2019.07.296] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Revised: 05/10/2019] [Accepted: 07/18/2019] [Indexed: 05/20/2023]
Abstract
Lead is among the most common toxic heavy metals and its contamination is of great public concern. Bacillus coagulans is the probiotic which can be considered as the lead absorption sorbent to apply in the lead contaminant water directly or indirectly. A better understanding of the lead resistance and tolerance mechanisms of B. coagulans would help further its development and utilization. Wild-type Bacillus coagulans strain R11 isolated from a lead mine, was acclimated to lead-containing culture media over 85 passages, producing two lead-adapted strains, and the two strains shown higher lead intracellular accumulation ability (38.56-fold and 19.36-fold) and reducing ability (6.94-fold and 7.44-fold) than that of wild type. Whole genome sequencing, genome resequencing, and comparative transcriptomics identified lead resistance and tolerance process significantly involved in these genes which regulated glutathione and sulfur metabolism, flagellar formation and metal ion transport pathways in the lead-adapted strains, elucidating the relationships among the mechanisms regulating lead deposition, deoxidation, and motility and the evolved tolerance to lead. In addition, the B. coagulans mutants tended to form flagellar and chemotaxis systems to avoid lead ions rather than export it, suggesting a new resistance strategy. Based on the present results, the optimum lead concentration in environment should be considered when employed B. coagulans as the lead sorbent, due to the bacteria growth ability decreased in high lead concentration and physiology morphology changed could reduce the lead removal effectiveness. The identified deoxidization and compound secretion genes and pathways in B. coagulans R11 also are potential genetic engineering candidates for synthesizing glutathione, cysteine, methionine, and selenocompounds.
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Affiliation(s)
- Si-Cheng Xing
- College of Animal Science, South China Agricultural University, Guangzhou 510642, Guangdong, China; Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding, Key Laboratory of Chicken Genetics, Breeding and Reproduction, Ministry Agriculture, Guangzhou, 510642, Guangdong, China; National-Local Joint Engineering Research Center for Livestock Breeding, Guangzhou, 510642, Guangdong, China
| | - Jian-Dui Mi
- College of Animal Science, South China Agricultural University, Guangzhou 510642, Guangdong, China; Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding, Key Laboratory of Chicken Genetics, Breeding and Reproduction, Ministry Agriculture, Guangzhou, 510642, Guangdong, China; National-Local Joint Engineering Research Center for Livestock Breeding, Guangzhou, 510642, Guangdong, China
| | - Jing-Yuan Chen
- College of Animal Science, South China Agricultural University, Guangzhou 510642, Guangdong, China; Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding, Key Laboratory of Chicken Genetics, Breeding and Reproduction, Ministry Agriculture, Guangzhou, 510642, Guangdong, China; National-Local Joint Engineering Research Center for Livestock Breeding, Guangzhou, 510642, Guangdong, China
| | - Lei Xiao
- College of Animal Science, South China Agricultural University, Guangzhou 510642, Guangdong, China; Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding, Key Laboratory of Chicken Genetics, Breeding and Reproduction, Ministry Agriculture, Guangzhou, 510642, Guangdong, China; National-Local Joint Engineering Research Center for Livestock Breeding, Guangzhou, 510642, Guangdong, China
| | - Yin-Bao Wu
- College of Animal Science, South China Agricultural University, Guangzhou 510642, Guangdong, China; Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding, Key Laboratory of Chicken Genetics, Breeding and Reproduction, Ministry Agriculture, Guangzhou, 510642, Guangdong, China; National-Local Joint Engineering Research Center for Livestock Breeding, Guangzhou, 510642, Guangdong, China
| | - Juan Boo Liang
- Laboratory of Sustainable Animal Production and Biodiversity, Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia, Serdang 43400, Malaysia
| | - Lian-Hui Zhang
- Guangdong Province Key Laboratory of Microbial Signals and Disease Control, State Key Laboratory for Conservation and Utilization of Subtropical AgroBioresources, College of Agriculture, South China Agricultural University, Guangzhou 510642, China.
| | - Xin-Di Liao
- College of Animal Science, South China Agricultural University, Guangzhou 510642, Guangdong, China; Guangdong Provincial Key Lab of Agro-Animal Genomics and Molecular Breeding, Key Laboratory of Chicken Genetics, Breeding and Reproduction, Ministry Agriculture, Guangzhou, 510642, Guangdong, China; National-Local Joint Engineering Research Center for Livestock Breeding, Guangzhou, 510642, Guangdong, China.
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Ramírez V, Baez A, López P, Bustillos R, Villalobos MÁ, Carreño R, Contreras JL, Muñoz-Rojas J, Fuentes LE, Martínez J, Munive JA. Chromium Hyper-Tolerant Bacillus sp. MH778713 Assists Phytoremediation of Heavy Metals by Mesquite Trees ( Prosopis laevigata). Front Microbiol 2019; 10:1833. [PMID: 31456770 PMCID: PMC6700308 DOI: 10.3389/fmicb.2019.01833] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Accepted: 07/25/2019] [Indexed: 12/04/2022] Open
Abstract
Heavy metal accumulation in mesquite trees (Prosopis laevigata) growing in aluminum, titanium, chromium and zirconium-polluted soils of a semi-arid region in Mexico was investigated using wavelength dispersive X-ray fluorescence analysis. The results showed that P. laevigata trees can hyper accumulate up to 4100 mg/kg of Al, 14000 mg/kg of Fe, 1600 mg/kg of Ti, 2500 mg/kg of Zn, but not chromium, regarding high chromium concentrations found in soils (435 mg/kg). Since plant-associated microorganism can modulate phytoremediation efficiency, the biodiversity of P. laevigata associated bacteria was studied. Eighty-eight isolates from P. laevigata nodules were obtained; all isolates tolerated high concentrations of Al, Fe, Zn and Cr in vitro. The top-six chromium tolerant strains were identified by 16S rRNA sequence analysis as belonging to genus Bacillus. Bacillus sp. MH778713, close to Bacillus cereus group, showed to be the most resistant strain, tolerating up to 15000 mg/L Cr (VI) and 10000 mg/L of Al. Regarding the bioaccumulation traits, Bacillus sp. MH778713 accumulated up to 100 mg Cr(VI)/g of cells when it was exposed to 1474 mg/L of Cr VI. To assess Bacillus sp. MH778713 ability to assist Prosopis laevigata phytoremediation; twenty plants were inoculated or non-inoculated with Bacillus sp. MH778713 and grown in nitrogen-free Jensen's medium added with 0, 10 and 25 mg/L of Cr(VI). Only plants inoculated with Bacillus sp. grew in the presence of chromium showing the ability of this strain to assist chromium phytoremediation. P. laevigata and Bacillus spp. may be considered as good candidates for soil restoration of arid and semiarid sites contaminated with heavy metals.
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Affiliation(s)
- Verónica Ramírez
- Centro de Investigaciones en Ciencias Microbiológicas, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Puebla, Mexico
| | - Antonino Baez
- Centro de Investigaciones en Ciencias Microbiológicas, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Puebla, Mexico
| | - Primavera López
- Centro de Investigaciones en Dispositivos Semiconductores, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Puebla, Mexico
| | - Rocío Bustillos
- Centro de Investigaciones en Ciencias Microbiológicas, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Puebla, Mexico
| | - Miguel Ángel Villalobos
- Centro de Investigación en Biotecnología Aplicada, Instituto Politécnico Nacional, Tlaxcala, Mexico
| | - Ricardo Carreño
- Centro de Investigaciones en Ciencias Microbiológicas, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Puebla, Mexico
| | - José Luis Contreras
- Facultad de Arquitectura, Benemérita Universidad Autónoma de Puebla, Puebla, Mexico
| | - Jesús Muñoz-Rojas
- Centro de Investigaciones en Ciencias Microbiológicas, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Puebla, Mexico
| | - Luis Ernesto Fuentes
- Centro de Investigaciones en Ciencias Microbiológicas, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Puebla, Mexico
| | - Javier Martínez
- Centro de Investigaciones en Dispositivos Semiconductores, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Puebla, Mexico
| | - José Antonio Munive
- Centro de Investigaciones en Ciencias Microbiológicas, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Puebla, Mexico
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Sommaggio LRD, Mazzeo DEC, Sant' Anna DDAES, Levy CE, Marin-Morales MA. Ecotoxicological and microbiological assessment of sewage sludge associated with sugarcane bagasse. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 147:550-557. [PMID: 28918337 DOI: 10.1016/j.ecoenv.2017.09.009] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2017] [Revised: 09/01/2017] [Accepted: 09/05/2017] [Indexed: 06/07/2023]
Abstract
Sewage sludge (SS) obtained after sewage treatment process may contain several toxic substances. Bioremediation can decrease the toxicity of the sludge, mainly when it is associated with stimulant agents, such as sugarcane bagasse (B). Samples of pure SS (SSP); SS+B; SS+Soil; and SS+B+Soil were bioremediated for 1, 3, and 6 months (T1, T2, and T3, respectively). After each period, the cytotoxic, genotoxic, and mutagenic potentials of the solid samples and their respective aqueous extracts (aqueous eluate and percolate water) were evaluated by the Allium cepa test. A microbiological analysis of the samples was also performed after each period tested. All solid samples of SS+B (in T1, T2, and T3) and the solid sample of SSP (treatment T3) showed a significant decrease of cell division (cytotoxic effects). The aqueous eluate extracts of SS+B (T1 and T3) and SSP (T2 and T3) induced cytotoxic effect. The solid sample of SS+B (T2 and T3) and aqueous extracts of SSP (T1) were genotoxic, indicating a harmful effect of SS on A. cepa, even after 6 months of bioremediation. There was an alternation in the microbial community both in diversity and in abundance, with the predominance of nonfermenting gram-negative bacilli. The tested bioremediation periods were not sufficient for the complete detoxification of SS, and the use of B did not seem to contribute to the degradation of the pollutants to inert compounds. These data emphasize that a specific relationship should exist between the sludge characteristic and the biostimulating agent used to promote a more efficient bioremediation. These results suggest the necessity to study longer periods of biodegradation and the use of other decomposing agents for greater safety and sustainability for the agricultural use of this residue.
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Affiliation(s)
- Lais Roberta Deroldo Sommaggio
- Department of Biology, Institute of Biosciences, São Paulo State University (Unesp), Av. 24-A, 1515, 13506-900 Rio Claro, SP, Brazil.
| | - Dânia Elisa Christofoletti Mazzeo
- Department of Analytical Chemistry, Institute of Chemistry, São Paulo State University (Unesp), Rua Professor Francisco Degni, 55, 14800-060, Araraquara, SP, Brazil.
| | - Débora de Andrade E Silva Sant' Anna
- Department of Clinical Pathology, Faculty of Medical Sciences, State University of Campinas (UNICAMP), Rua Alexander Fleming, 105, 13081-970 Campinas, SP, Brazil.
| | - Carlos Emílio Levy
- Department of Clinical Pathology, Faculty of Medical Sciences, State University of Campinas (UNICAMP), Rua Alexander Fleming, 105, 13081-970 Campinas, SP, Brazil.
| | - Maria Aparecida Marin-Morales
- Department of Biology, Institute of Biosciences, São Paulo State University (Unesp), Av. 24-A, 1515, 13506-900 Rio Claro, SP, Brazil.
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Hlihor RM, Roşca M, Tavares T, Gavrilescu M. The role of Arthrobacter viscosus in the removal of Pb(II) from aqueous solutions. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2017; 76:1726-1738. [PMID: 28991789 DOI: 10.2166/wst.2017.360] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The aim of this paper was to establish the optimum parameters for the biosorption of Pb(II) by dead and living Arthrobacter viscosus biomass from aqueous solution. It was found that at an initial pH of 4 and 26 °C, the dead biomass was able to remove 97% of 100 mg/L Pb(II), while the living biomass removed 96% of 100 mg/L Pb(II) at an initial pH of 6 and 28 ± 2 °C. The results were modeled using various kinetic and isotherm models so as to find out the mechanism of Pb(II) removal by A. viscosus. The modeling results indicated that Pb(II) biosorption by A. viscosus was based on a chemical reaction and that sorption occurred at the functional groups on the surface of the biomass. Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy coupled with energy dispersive X-ray microanalysis (SEM-EDX) analyses confirmed these findings. The suitability of living biomass as biosorbent in the form of a biofilm immobilized on star-shaped polyethylene supports was also demonstrated. The results suggest that the use of dead and living A. viscosus for the removal of Pb(II) from aqueous solutions is an effective alternative, considering that up to now it has only been used in the form of biofilms supported on different zeolites.
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Affiliation(s)
- Raluca Maria Hlihor
- Department of Environmental Engineering and Management, Faculty of Chemical Engineering and Environmental Protection, 'Gheorghe Asachi' Technical University of Iasi, 73 Prof.dr.docent D. Mangeron Street, 700050 Iasi, Romania E-mail: ; Department of Horticultural Technologies, Faculty of Horticulture, 'Ion Ionescu de la Brad' University of Agricultural Sciences and Veterinary Medicine of Iasi, 3 Aleea Mihail Sadoveanu, 700490 Iasi, Romania
| | - Mihaela Roşca
- Department of Environmental Engineering and Management, Faculty of Chemical Engineering and Environmental Protection, 'Gheorghe Asachi' Technical University of Iasi, 73 Prof.dr.docent D. Mangeron Street, 700050 Iasi, Romania E-mail:
| | - Teresa Tavares
- CEB - Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Maria Gavrilescu
- Department of Environmental Engineering and Management, Faculty of Chemical Engineering and Environmental Protection, 'Gheorghe Asachi' Technical University of Iasi, 73 Prof.dr.docent D. Mangeron Street, 700050 Iasi, Romania E-mail: ; Academy of Romanian Scientists, 54 Splaiul Independentei, RO-050094 Bucharest, Romania
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Sepehr MN, Al-Musawi TJ, Ghahramani E, Kazemian H, Zarrabi M. Adsorption performance of magnesium/aluminum layered double hydroxide nanoparticles for metronidazole from aqueous solution. ARAB J CHEM 2017. [DOI: 10.1016/j.arabjc.2016.07.003] [Citation(s) in RCA: 82] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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11
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Banerjee S, Joshi SR, Mandal T, Halder G. Insight into Cr 6+ reduction efficiency of Rhodococcus erythropolis isolated from coalmine waste water. CHEMOSPHERE 2017; 167:269-281. [PMID: 27728886 DOI: 10.1016/j.chemosphere.2016.10.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2016] [Revised: 09/23/2016] [Accepted: 10/03/2016] [Indexed: 06/06/2023]
Abstract
A microbial treatment of Cr6+ contaminated wastewater with a chromium reducing bacteria isolated from coal mine area was investigated. In a series of batch study metal removal was executed under different parametric conditions which include pH (2-7), temperature (20-50 °C), initial Cr6+ concentration (1-100 mg/L), substrate utilization and its overall effect on biomass generation. Impact of oxygen availability was checked at different agitation speed and its role on the remedial process. Liquid phase reduction of Cr6+ was measured in terms of substrate reduction and total biomass yield. The bacterium species isolated was able to tolerate Cr6+ over a wide range from 1 to 100 mg/L before it reached minimum inhibition concentration. Apart from Cr6+, the bacterial isolate showed tolerance towards Fe, As, Cu, Ag, Zn, Mn, Mg and Pb. Removal mechanism adopted by the bacterium recommended that it employed accumulation of Cr6+ as Cr3+ both within and outside the cell. Classical Monod equation was used to determine the biokinetics of the bacterial isolate along with the interference of metal ion concentration and substrate utilization. Cr6+ removal was found prominent even in bimetallic solutions. The bacterial isolate was confirmed to be Rhodococcus erythopolis by 16s rRNA molecular characterization. Thus the bacterial isolate obtained from the coal mine area proved to be a potential agent for microbial remediation of Cr6+ laden waste water.
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Affiliation(s)
- Soumya Banerjee
- Department of Chemical Engg, National Institute of Technology, Durgapur, West Bengal, India
| | - S R Joshi
- Department of Biotechnology and Bioinformatics, North-Eastern Hill University, Shillong, India
| | - Tamal Mandal
- Department of Chemical Engg, National Institute of Technology, Durgapur, West Bengal, India
| | - Gopinath Halder
- Department of Chemical Engg, National Institute of Technology, Durgapur, West Bengal, India.
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Hsu KC, Hsieh JR, Chen YC, Hsu PF, Hung CC, Huang YL. A microdialysis-based analytical system for dynamic monitoring of arsenic transformation under microbial activity. Analyst 2017; 142:4737-4743. [DOI: 10.1039/c7an01399j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this study, a microdialysis (MD) technique was combined with high-performance liquid chromatography/inductively coupled plasma mass spectrometry (HPLC-ICP-MS) for continuous monitoring of the dynamic variations of arsenic species in a microbe-inoculated culture broth.
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Affiliation(s)
- Keng-Chang Hsu
- Department of Medical Laboratory Science and Biotechnology
- College of Health Sciences
- Kaohsiung Medical University
- Taiwan
| | - Jing-Ru Hsieh
- Department of Medical Laboratory Science and Biotechnology
- College of Health Sciences
- Kaohsiung Medical University
- Taiwan
| | - Ya-Ching Chen
- Department of Laboratory Medicine
- Kaohsiung Medical University Hospital
- Kaohsiung Medical University
- Taiwan
| | - Pi-Fu Hsu
- Department of Medical Laboratory Science and Biotechnology
- College of Health Sciences
- Kaohsiung Medical University
- Taiwan
| | - Chih-Chang Hung
- Research Center of Environmental Medicine
- Kaohsiung Medical University
- Taiwan
| | - Yeou-Lih Huang
- Department of Medical Laboratory Science and Biotechnology
- College of Health Sciences
- Kaohsiung Medical University
- Taiwan
- Department of Laboratory Medicine
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13
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Kamar FH, Nechifor AC, Nechifor G, Al-Musawi TJ, Mohammed AH. Aqueous Phase Biosorption of Pb(II), Cu(II), and Cd(II) onto Cabbage Leaves Powder. INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING 2016. [DOI: 10.1515/ijcre-2015-0178] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
In this study, the biosorption of lead (Pb(II)), copper (Cu(II)), and cadmium (Cd(II)) ions from aqueous solution using waste of cabbage leaves powder (CLP) was investigated as a function of pH, shaking time, initial metal concentration, and biosorbent dose. The maximum removal efficiency at optimum condition in single biosorption system was 95.67, 92.42, and 88.92 % for Pb(II), Cu(II), and Cd(II) ions, respectively. These values reduced in ternary systems in the same sequence. Langmuir and extended Langmuir isotherm models were found to be the best fit of the isotherm data for single and ternary biosorption systems, respectively. The kinetic data of the three metals were better fit by the pseudo-second-order model with higher coefficient of determination and more closely predicted uptake. In addition, the results showed that the intraparticle diffusion was the dominating mechanism. Thermodynamic study showed that the biosorption of Pb(II), Cu(II), and Cd(II) onto CLP was a chemical reaction which was exothermic in nature. Finally, SEM image shows that CLP has a number of heterogeneous small pores while the Fourier transform infrared (FTIR) spectroscopic analysis showed that the carboxyl, amine, and hydroxyl groups are the major groups that are responsible for the biosorption process.
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Affiliation(s)
- Firas Hashim Kamar
- Department of Analytical Chemistry and Environmental Engineering, University Politehnica of Bucharest, Romania
- Institute of Technology-Baghdad, Middle Technical University, Baghdad, Iraq
| | - Aurelia Cristina Nechifor
- Department of Analytical Chemistry and Environmental Engineering, University Politehnica of Bucharest, Romania
| | - Gheorghe Nechifor
- Department of Analytical Chemistry and Environmental Engineering, University Politehnica of Bucharest, Romania
| | - Tariq J. Al-Musawi
- Department of Civil Engineering, Faculty of Engineering, Isra University, Amman, Jordan
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Brouers F, Al-Musawi TJ. On the optimal use of isotherm models for the characterization of biosorption of lead onto algae. J Mol Liq 2015. [DOI: 10.1016/j.molliq.2015.08.054] [Citation(s) in RCA: 92] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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15
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Samarghandi MR, Al-Musawi TJ, Mohseni-Bandpi A, Zarrabi M. Adsorption of cephalexin from aqueous solution using natural zeolite and zeolite coated with manganese oxide nanoparticles. J Mol Liq 2015. [DOI: 10.1016/j.molliq.2015.06.067] [Citation(s) in RCA: 117] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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16
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Jiang Y, Yang Y, Qian G, Hou H, Xi B, Xu Y. Aqueous Cr (VI) removal by Friedel's salt adsorbent prepared from calcium aluminate-rich cementitious materials. ENVIRONMENTAL TECHNOLOGY 2015; 36:2086-2093. [PMID: 25798557 DOI: 10.1080/09593330.2015.1021857] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
This research paper investigated a novel absorbent of calcium aluminate-rich cementitious materials (Friedel's salt adsorbent, FA) for aqueous hexavalent chromium (VI) removal. The adsorption kinetics showed that the maximum adsorption capacities of FA were 3.36, 14.66, and 26.17 mg/g when the initial Cr(VI) concentration was 10, 50, and 100 mg/L, respectively. The adsorption fitted with the pseudo-second-order kinetic model, suggesting the important roles of intercalation in the adsorption process with increasing Cr(VI) concentrations. This Friedel's salt adsorbent is suggested as an adaptive and effective adsorbent for Cr(VI) removal in contaminated groundwater.
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Affiliation(s)
- Yonghai Jiang
- a State Key Laboratory of Environmental Criteria and Risk Assessment , Chinese Research Academy of Environmental Sciences , Beijing 100012 , People's Republic of China
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Paul AK, Dey S. Hexavalent Chromate Reduction During Growth and by Immobilized Cells of Arthrobacter sp. SUK 1205. ACTA ACUST UNITED AC 2015. [DOI: 10.3923/std.2015.158.168] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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18
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Colla LM, Dal'Magro C, De Rossi A, Thomé A, Reinehr CO, Bertolin TE, Costa JAV. Potential of Live Spirulina platensis on Biosorption of Hexavalent Chromium and Its Conversion to Trivalent Chromium. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2015; 17:861-868. [PMID: 25436450 DOI: 10.1080/15226514.2014.964846] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Microalga biomass has been described worldwide according their capacity to realize biosorption of toxic metals. Chromium is one of the most toxic metals that could contaminate superficial and underground water. Considering the importance of Spirulina biomass in production of supplements for humans and for animal feed we assessed the biosorption of hexavalent chromium by living Spirulina platensis and its capacity to convert hexavalent chromium to trivalent chromium, less toxic, through its metabolism during growth. The active biomass was grown in Zarrouk medium diluted to 50% with distilled water, keeping the experiments under controlled conditions of aeration, temperature of 30°C and lighting of 1,800 lux. Hexavalent chromium was added using a potassium dichromate solution in fed-batch mode with the aim of evaluate the effect of several additions contaminant in the kinetic parameters of the culture. Cell growth was affected by the presence of chromium added at the beginning of cultures, and the best growth rates were obtained at lower metal concentrations in the medium. The biomass removed until 65.2% of hexavalent chromium added to the media, being 90.4% converted into trivalent chromium in the media and 9.6% retained in the biomass as trivalent chromium (0.931 mg.g(-1)).
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Affiliation(s)
- Luciane Maria Colla
- a University of Passo Fundo, Graduate Program in Civil and Environmental Engineering , Bairro São José , Passo Fundo/RS , Brazil
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Thatoi H, Das S, Mishra J, Rath BP, Das N. Bacterial chromate reductase, a potential enzyme for bioremediation of hexavalent chromium: a review. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2014; 146:383-399. [PMID: 25199606 DOI: 10.1016/j.jenvman.2014.07.014] [Citation(s) in RCA: 233] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2014] [Revised: 07/03/2014] [Accepted: 07/10/2014] [Indexed: 05/14/2023]
Abstract
Hexavalent chromium is mobile, highly toxic and considered as a priority environmental pollutant. Chromate reductases, found in chromium resistant bacteria are known to catalyse the reduction of Cr(VI) to Cr(III) and have recently received particular attention for their potential use in bioremediation process. Different chromate reductases such as ChrR, YieF, NemA and LpDH, have been identified from bacterial sources which are located either in soluble fractions (cytoplasm) or bound to the membrane of the bacterial cell. The reducing conditions under which these enzymes are functional can either be aerobic or anaerobic or sometimes both. Enzymatic reduction of Cr(VI) to Cr(III) involves transfer of electrons from electron donors like NAD(P)H to Cr(VI) and simultaneous generation of reactive oxygen species (ROS). Based on the steps involved in electron transfer to Cr(VI) and the subsequent amount of ROS generated, two reaction mechanisms, namely, Class I "tight" and Class II "semi tight" have been proposed. The present review discusses on the types of chromate reductases found in different bacteria, their mode of action and potential applications in bioremediation of hexavalent chromium both under free and immobilize conditions. Besides, techniques used in characterization of the Cr (VI) reduced products were also discussed.
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Affiliation(s)
- Hrudayanath Thatoi
- Department of Biotechnology, College of Engineering and Technology, Biju Patnaik University of Technology, Techno-Campus, Ghatikia, Bhubaneswar 751003, Odisha, India.
| | - Sasmita Das
- Department of Biotechnology, College of Engineering and Technology, Biju Patnaik University of Technology, Techno-Campus, Ghatikia, Bhubaneswar 751003, Odisha, India
| | - Jigni Mishra
- Department of Biotechnology, College of Engineering and Technology, Biju Patnaik University of Technology, Techno-Campus, Ghatikia, Bhubaneswar 751003, Odisha, India
| | - Bhagwat Prasad Rath
- Department of Biotechnology, College of Engineering and Technology, Biju Patnaik University of Technology, Techno-Campus, Ghatikia, Bhubaneswar 751003, Odisha, India
| | - Nigamananda Das
- Department of Chemistry, North Orissa University, Takatpur, Baripada 757003, Odisha, India
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Hsu KC, Hung CC, Lee CF, Hsu PF, Huang YL. Combining microdialysis sampling and inductively coupled plasma mass spectrometry for dynamic monitoring of trace metal ions during bacterial growth periods. RSC Adv 2014. [DOI: 10.1039/c4ra07941h] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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21
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Figueiredo H, Quintelas C. Tailored zeolites for the removal of metal oxyanions: overcoming intrinsic limitations of zeolites. JOURNAL OF HAZARDOUS MATERIALS 2014; 274:287-299. [PMID: 24794984 DOI: 10.1016/j.jhazmat.2014.04.012] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2014] [Revised: 03/24/2014] [Accepted: 04/09/2014] [Indexed: 06/03/2023]
Abstract
This review aims to present a global view of the efforts conducted to convert zeolites into efficient supports for the removal of heavy metal oxyanions. Despite lacking affinity for these species, due to inherent charge repulsion between zeolite framework and anionic species, zeolites have still received considerable attention from the scientific community, since their versatility allowed tailoring them to answer specific requirements. Different processes for the removal and recovery of toxic metals based on zeolites have been presented. These processes resort to modification of the zeolite surface to allow direct adsorption of oxyanions, or by combination with reducing agents for oxyanions that allow ion-exchange with the converted species by the zeolite itself. In order to testify zeolite versatility, as well as covering the wide array of physicochemical constraints that oxyanions offer, chromium and arsenic oxyanions were selected as model compounds for a review of treatment/remediation strategies, based on zeolite modification.
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Affiliation(s)
- Hugo Figueiredo
- CEB-Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal.
| | - Cristina Quintelas
- CEB-Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal.
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22
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Ergul-Ulger Z, Ozkan AD, Tunca E, Atasagun S, Tekinay T. Chromium(VI) Biosorption and Bioaccumulation by Live and Acid-Modified Biomass of a NovelMorganella morganiiIsolate. SEP SCI TECHNOL 2014. [DOI: 10.1080/01496395.2013.866681] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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23
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Qiang T, Bu Q, Ren L, Wang X. Adsorption behaviors of Cr(III) on carboxylated collagen fiber. J Appl Polym Sci 2013. [DOI: 10.1002/app.40285] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Taotao Qiang
- Key Laboratory of Auxiliary Chemistry & Technology for Light Chemical Industry; Shaanxi University of Science & Technology; Xi'an 710021 China
| | - Qiaoqiao Bu
- Key Laboratory of Auxiliary Chemistry & Technology for Light Chemical Industry; Shaanxi University of Science & Technology; Xi'an 710021 China
| | - Longfang Ren
- Key Laboratory of Auxiliary Chemistry & Technology for Light Chemical Industry; Shaanxi University of Science & Technology; Xi'an 710021 China
| | - Xuechuan Wang
- Key Laboratory of Auxiliary Chemistry & Technology for Light Chemical Industry; Shaanxi University of Science & Technology; Xi'an 710021 China
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Performance study of chromium (VI) removal in presence of phenol in a continuous packed bed reactor by Escherichia coli isolated from East Calcutta Wetlands. BIOMED RESEARCH INTERNATIONAL 2013; 2013:373412. [PMID: 24073400 PMCID: PMC3773405 DOI: 10.1155/2013/373412] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/26/2013] [Revised: 07/22/2013] [Accepted: 07/23/2013] [Indexed: 11/18/2022]
Abstract
Organic pollutants, like phenol, along with heavy metals, like chromium, are present in various industrial effluents that pose serious health hazard to humans. The present study looked at removal of chromium (VI) in presence of phenol in a counter-current continuous packed bed reactor packed with E. coli cells immobilized on clay chips. The cells removed 85% of 500 mg/L of chromium (VI) from MS media containing glucose. Glucose was then replaced by 500 mg/L phenol. Temperature and pH of the MS media prior to addition of phenol were 30°C and 7, respectively. Hydraulic retention times of phenol- and chromium (VI)-containing synthetic media and air flow rates were varied to study the removal efficiency of the reactor system. Then temperature conditions of the reactor system were varied from 10°C to 50°C, the optimum being 30°C. The pH of the media was varied from pH 1 to pH 12, and the optimum pH was found to be 7. The maximum removal efficiency of 77.7% was achieved for synthetic media containing phenol and chromium (VI) in the continuous reactor system at optimized conditions, namely, hydraulic retention time at 4.44 hr, air flow rate at 2.5 lpm, temperature at 30°C, and pH at 7.
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Quintelas C, Costa F, Tavares T. Bioremoval of diethylketone by the synergistic combination of microorganisms and clays: uptake, removal and kinetic studies. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2013; 20:1374-1383. [PMID: 22752815 DOI: 10.1007/s11356-012-1055-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2012] [Accepted: 06/22/2012] [Indexed: 06/01/2023]
Abstract
The performance of two bacteria, Arthrobacter viscosus and Streptococcus equisimilis, and the effect of the interaction of these bacteria with four different clays on the retention of diethylketone were investigated in batch experiments. The uptake, the removal percentages and the kinetics of the processes were determined. S. equisimilis, by itself, had the best performance in terms of removal percentage, for all the initial diethylketone concentrations tested: 200, 350 and 700 mg/L. The uptake values are similar for both bacteria. A possible mechanism to explain the removal of diethylketone includes its degradation by bacteria, followed by the adsorption of the intermediates/sub-products by the functional groups present on the cells' surfaces. The assays performed with bacteria and clays indicated that the uptake values are similar despite of the clay used, for the same microorganism and mass of clay, but in general, higher values are reached when S. equisimilis is used, compared to A. viscosus. Kinetic data were described by pseudo-first- and pseudo-second-order models.
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Affiliation(s)
- Cristina Quintelas
- IBB-Institute for Biotechnology and Bioengineering, Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057, Braga, Portugal.
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Sulaymon AH, Ebrahim SE, Mohammed-Ridha MJ. Equilibrium, kinetic, and thermodynamic biosorption of Pb(II), Cr(III), and Cd(II) ions by dead anaerobic biomass from synthetic wastewater. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2013; 20:175-187. [PMID: 22427177 DOI: 10.1007/s11356-012-0854-8] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2012] [Accepted: 03/01/2012] [Indexed: 05/31/2023]
Abstract
PURPOSE Heavy metals are toxic pollutants released into the environment as a result of different industrial activities. Biosorption of heavy metals from aqueous solutions is a new technology for the treatment of industrial wastewater. The aim of the present research is to highlight the basic biosorption theory to heavy metal removal. MATERIALS AND METHODS Heterogeneous cultures mostly dried anaerobic bacteria, yeast (fungi), and protozoa were used as low-cost material to remove metallic cations Pb(II), Cr(III), and Cd(II) from synthetic wastewater. Competitive biosorption of these metals was studied. RESULTS The main biosorption mechanisms were complexation and physical adsorption onto natural active functional groups. It is observed that biosorption of these metals was a surface process. The main functional groups involved in these processes were hydroxyl (-OH) and carboxylic groups (C=O) with 37, 52, and 31 and 21, 14, and 34 % removal of Pb(II), Cr(III), and Cd(II), respectively. Langmuir was the best model for a single system. While extended Langmuir was the best model for binary and ternary metal systems. The maximum uptake capacities were 54.92, 34.78, and 29.99 mg/g and pore diffusion coefficients were 7.23, 3.15, and 2.76 × 10(-11) m(2)/s for Pb(II), Cr(III), and Cd(II), respectively. Optimum pH was found to be 4. Pseudo-second-order was the best model to predict the kinetic process. Biosorption process was exothermic and physical in nature. CONCLUSIONS Pb(II) offers the strongest component that is able to displace Cr(III) and Cd(II) from their sites, while Cd(II) ions are the weakest adsorbed component.
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Affiliation(s)
- Abbas Hamid Sulaymon
- Environmental Engineering Department, College of Engineering, University of Baghdad, 8856 Baghdad, Iraq.
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Farooq U, Athar M, Khan MA, Kozinski JA. Biosorption of Pb(II) and Cr(III) from aqueous solutions: breakthrough curves and modeling studies. ENVIRONMENTAL MONITORING AND ASSESSMENT 2013; 185:845-854. [PMID: 22426844 DOI: 10.1007/s10661-012-2595-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2012] [Accepted: 03/06/2012] [Indexed: 05/31/2023]
Abstract
The sorption capacity parameters obtained for batch studies provide useful information about biosorption system. However, such data fail to explain the process under continuous-flow conditions. The present study is an attempt to explore the biosorption of Pb(II) and Cr(III) by straw from local wheat (Triticum aestivum). The biosorbent has been characterized by using Fourier transform infrared spectroscopy and surface area and elemental analyses and found to be porous and polyfunctional. S-shaped breakthrough curves were obtained at different column heights for the both metal ions. Various breakthrough parameters and saturation times have been determined. The column data have been successfully used to study the Bohart-Adams' bed depth service time (BDST) model and Yoon and Nelson's model. It was found that BDST model quite efficiently explained the whole column data whereas Yoon and Nelson model could explain it below 90% breakthrough concentration. The predicted and calculated BDST parameters were in agreement with each other. Yoon and Nelson's constant decreased with an increase in the column height for both metal ions. Effect of change in flow rate on the Pb(II) biosorption has also been discussed with respect to BDST approach.
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Affiliation(s)
- Umar Farooq
- Institute of Chemistry, University of the Punjab, Lahore, Pakistan.
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Fonseca B, Pazos M, Tavares T, Sanromán MA. Removal of hexavalent chromium of contaminated soil by coupling electrokinetic remediation and permeable reactive biobarriers. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2012; 19:1800-1808. [PMID: 22203400 DOI: 10.1007/s11356-011-0694-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2011] [Accepted: 12/09/2011] [Indexed: 05/31/2023]
Abstract
PURPOSE In this study, a novel and ecological alternative have been developed to treat soils contaminated with hexavalent chromium coupling two well-known systems: electrokinetic remediation and permeable reactive biobarriers. The electric field promotes the electromigration of the hexavalent chromium oxyanions towards the anode. The biobarriers were placed before the anode electrode, in order to promote the reduction and retention of the chromium migrating in its direction. Thus, this technology provided a global treatment to soil removal without subsequent treatments of the contaminated effluents. METHODS The electrokinetic system was coupled with two different permeable reactive biobarriers composed by Arthrobacter viscosus bacteria, supported either in activated carbon or zeolite. An electric field of 10 V was applied and two different treatment times of 9 and 18 days were tested. RESULTS Removal values of 60% and 79% were obtained when electrokinetic treatment was coupled with zeolite and activated carbon biobarriers, respectively, for a test period of 18 day. The reduction of hexavalent chromium to trivalent chromium was around 45% for both systems. CONCLUSIONS In this work, two types of biobarriers were efficiently coupled to electrokinetic treatment to decontaminate soil with Cr(VI). Furthermore, the viability of the new coupling technology developed (electrokinetic + biobarriers) to treat low-permeability polluted soils was demonstrated.
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Affiliation(s)
- B Fonseca
- Institute for Biotechnology and Bioengineering, Centre of Biological Engineering, University of Minho, Braga, Portugal
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Garg SK, Tripathi M, Srinath T. Strategies for chromium bioremediation of tannery effluent. REVIEWS OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2012; 217:75-140. [PMID: 22350558 DOI: 10.1007/978-1-4614-2329-4_2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Bioremediation offers the possibility of using living organisms (bacteria, fungi, algae,or plants), but primarily microorganisms, to degrade or remove environmental contaminants, and transform them into nontoxic or less-toxic forms. The major advantages of bioremediation over conventional physicochemical and biological treatment methods include low cost, good efficiency, minimization of chemicals, reduced quantity of secondary sludge, regeneration of cell biomass, and the possibility of recover-ing pollutant metals. Leather industries, which extensively employ chromium compounds in the tanning process, discharge spent-chromium-laden effluent into nearby water bodies. Worldwide, chromium is known to be one of the most common inorganic contaminants of groundwater at pollutant hazardous sites. Hexavalent chromium poses a health risk to all forms of life. Bioremediation of chromium extant in tannery waste involves different strategies that include biosorption, bioaccumulation,bioreduction, and immobilization of biomaterial(s). Biosorption is a nondirected physiochemical interaction that occurs between metal species and the cellular components of biological species. It is metabolism-dependent when living biomass is employed, and metabolism-independent in dead cell biomass. Dead cell biomass is much more effective than living cell biomass at biosorping heavy metals, including chromium. Bioaccumulation is a metabolically active process in living organisms that works through adsorption, intracellular accumulation, and bioprecipitation mechanisms. In bioreduction processes, microorganisms alter the oxidation/reduction state of toxic metals through direct or indirect biological and chemical process(es).Bioreduction of Cr6+ to Cr3+ not only decreases the chromium toxicity to living organisms, but also helps precipitate chromium at a neutral pH for further physical removal,thus offering promise as a bioremediation strategy. However, biosorption, bioaccumulation, and bioreduction methods that rely on free cells for bioremediation suffer from Cr6 toxicity, and cell damage. Therefore, immobilization of microbial cell biomass enhances bioremediation and renders industrial bioremediation processes more economically viable from reduced free-cells toxicity, easier separation of biosorbents from the tannery effluent, ability to achieve multiple biosorption cycles, and desorption (elution) of metal(s) from matrices for reuse. Thus, microbial bioremediation can be a cost competitive strategy and beneficial bioresource for removing many hazardous contaminants from tannery and other industrial wastes.
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Affiliation(s)
- Satyendra Kumar Garg
- Department of Microbiology, Dr. Ram Manohar Lohia Avadh University, Faizabad, India.
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Magro CD, Deon MC, De Rossi A, Reinehr CO, Hemkemeier M, Colla LM. Chromium (VI) biosorption and removal of chemical oxygen demand by Spirulina platensis from wastewater-supplemented culture medium. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 2012; 47:1818-1824. [PMID: 22755529 DOI: 10.1080/10934529.2012.689539] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The inappropriate discharge of wastewater containing high concentrations of toxic metals is a serious threat to the environment. Given that the microalga Spirulina platensis has demonstrated a capacity for chromium VI (Cr (VI) biosorption, we assessed the ideal concentration of chromium-containing wastewater required for maximum removal of Cr (VI) and chemical oxygen demand (COD) from the environment by using this microalga. The Paracas and Leb-52 strains of S. platensis, with initial wastewater concentrations of 0%, 12.5%, 25%, and 50%, were cultured in Zarrouk medium diluted to 50% under controlled air, temperature, and lighting conditions. The cultures were maintained for 28 days, and pH, biomass growth, COD, and Cr (VI) were assessed. The wastewater concentration influenced microalgal growth, especially at high concentrations. Removal of 82.19% COD and 60.92% Cr (VI) was obtained, but the COD removal was greater than the Cr (VI) removal in both strains of S. platensis.
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Affiliation(s)
- Clinei D Magro
- Laboratory of Fermentations, Course of Environmental Engineering, College of Engineering and Architecture, University of Passo Fundo, Passo Fundo, Rio Grande do Sul, Brazil
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Harish R, Samuel J, Mishra R, Chandrasekaran N, Mukherjee A. Bio-reduction of Cr(VI) by exopolysaccharides (EPS) from indigenous bacterial species of Sukinda chromite mine, India. Biodegradation 2011; 23:487-96. [PMID: 22119897 DOI: 10.1007/s10532-011-9527-4] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2011] [Accepted: 11/19/2011] [Indexed: 11/30/2022]
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Yan R, Yang F, Wu Y, Hu Z, Nath B, Yang L, Fang Y. Cadmium and mercury removal from non-point source wastewater by a hybrid bioreactor. BIORESOURCE TECHNOLOGY 2011; 102:9927-9932. [PMID: 21903380 DOI: 10.1016/j.biortech.2011.08.049] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2011] [Revised: 08/11/2011] [Accepted: 08/12/2011] [Indexed: 05/31/2023]
Abstract
The purpose of this study was to remove cadmium (Cd) and mercury (Hg) from non-point source wastewater by a hybrid bioreactor consisting of two different processes (anaerobic-anoxic-aerobic and photoautotrophic). The results showed that the bioreactor could concurrently culture heterotrophic and autotrophic microorganisms, and removed Cd and Hg from the wastewater successfully. The average removal efficiencies were 79% and 66%, respectively for Cd and Hg. The relationship between Cd removal rate and biofilm mass was observed to be significant (p<0.05) during different seasons. The Hg removal was mainly due to the bioaccumulation in macrophytes via a photoautotrophic process. Due to the increase of the bacterial diversity under the rejuvenated conditions modulated by the hybrid bioreactor, the growth conditions of the native bacterial habitat were improved. The results demonstrate that the environmentally benign, easily-deployed, sludge free and cost-effective hybrid bioreactor can efficiently remove Cd and Hg from non-point source wastewater.
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Affiliation(s)
- Rong Yan
- College of Forest Resource and Environment Science, Nanjing Forestry University, Nanjing 210037, Jiangsu, People's Republic of China
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Quintelas C, da Silva VB, Silva B, Figueiredo H, Tavares T. Optimization of production of extracellular polymeric substances by Arthrobacter viscosus and their interaction with a 13X zeolite for the biosorption of Cr(VI). ENVIRONMENTAL TECHNOLOGY 2011; 32:1541-1549. [PMID: 22329145 DOI: 10.1080/09593330.2010.543930] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
In this work we aimed to optimize the production of extracellular polymeric substances (EPS) by an Arthrobacter viscosus biofilm supported on 13X zeolite to be used in the biosorption of Cr(VI). The optimization parameters were agitation rate, work volume, pH and glucose concentration. Following the optimization of EPS production, the biofilm was used in the biosorption of hexavalent Cr from liquid solutions. Differences between the use of dead or active biomass and between the performance of zeolite in powder or in pellet form were also studied. The optimized EPS production allowed values of metal uptake between 2.72 mg/g(biosorbent) and 7.88 mg/g(biosorbent) for initial Cr(VI) concentrations of 20-60 mg/L. For an initial concentration of 20 mg/L, the optimal conditions of EPS production allowed an increase of 10% on the removal percentage of total Cr, and the use of zeolite as a powder rather than the pelleted form produced an increase of 46.5% in the removal percentage. For the initial concentration of 60 mg/L, the use of active biomass compared to dried biomass allowed a reduction of the time required for the total removal of Cr(VI) from 20 to 13 days.
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Affiliation(s)
- Cristina Quintelas
- IBB-Lnstitute for Biotechnology and Bioengineering, Centre of Biological Engineering, University of Minho, Campus de Gualtar, Braga, Portugal.
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Costa F, Quintelas C, Tavares T. Kinetics of biodegradation of diethylketone by Arthrobacter viscosus. Biodegradation 2011; 23:81-92. [DOI: 10.1007/s10532-011-9488-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2011] [Accepted: 06/02/2011] [Indexed: 11/29/2022]
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Zhang D, Li W, Zhang S, Liu M, Gong H. Evaluation of the impact of DNA extraction methods on BAC bacterial community composition measured by denaturing gradient gel electrophoresis. Lett Appl Microbiol 2011; 53:44-9. [PMID: 21535041 DOI: 10.1111/j.1472-765x.2011.03064.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- D Zhang
- School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin, Heilongjiang, China
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Patel H, Vashi RT. Fixed bed column adsorption of ACID Yellow 17 dye onto Tamarind Seed Powder. CAN J CHEM ENG 2011. [DOI: 10.1002/cjce.20518] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Hasan SH, Srivastava P. Biosorptive Abatement of Cd2+ by Water Using Immobilized Biomass of Arthrobacter sp.: Response Surface Methodological Approach. Ind Eng Chem Res 2010. [DOI: 10.1021/ie101739q] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- S. H. Hasan
- Water Pollution Research Laboratory, Department of Applied Chemistry, Institute of Technology, Banaras Hindu University, Varanasi 221 005, India
| | - Preeti Srivastava
- Water Pollution Research Laboratory, Department of Applied Chemistry, Institute of Technology, Banaras Hindu University, Varanasi 221 005, India
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Quintelas C, Fonseca B, Silva B, Figueiredo H, Tavares T. Treatment of chromium(VI) solutions in a pilot-scale bioreactor through a biofilm of Arthrobacter viscosus supported on GAC. BIORESOURCE TECHNOLOGY 2009; 100:220-226. [PMID: 18565747 DOI: 10.1016/j.biortech.2008.05.010] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2008] [Revised: 05/05/2008] [Accepted: 05/06/2008] [Indexed: 05/26/2023]
Abstract
The aim of this work is to evaluate the applicability of a biofilm to the removal of chromium in solution, at a pilot scale. The effect of the initial concentration of metal on the biosorption behavior of an Arthrobacter viscosus biofilm supported on granular activated carbon, in batch and column essays was also analyzed. Six isotherm equations have been tested in the present study. The best fit was obtained with the Freundlich model. It was observed that as the initial chromium concentration increases, the uptake increases too, but the removal percentage decreases, with values between 95.20% (C(0)=5mg/l) and 38.28% (C(0)=1000 mg/l). The batch adsorption studies were used to develop a pilot bioreactor able to remove chromium from aqueous solutions. Data obtained in a pilot-scale reactor showed an average removal percentage of 99.9%, during the first 30 days, for the initial concentration of 10mg/l and an average removal percentage of 72%, for the same period and for the initial concentration of 100mg/l. Uptake values of 11.35 mg/g and 14.55 mg/g were obtained, respectively, for the initial concentration of 10 and 100mg/l. The results obtained are very promising and encourage the utilization of this biofilm in environmental applications.
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Affiliation(s)
- C Quintelas
- IBB-Institute for Biotechnology and Bioengineering, Centre of Biological Engineering, University of Minho, Braga, Portugal.
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Removal of Cu2+ from aqueous solution by chitosan-coated magnetic nanoparticles modified with alpha-ketoglutaric acid. J Colloid Interface Sci 2008; 330:29-37. [PMID: 18990406 DOI: 10.1016/j.jcis.2008.10.026] [Citation(s) in RCA: 211] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2008] [Revised: 10/09/2008] [Accepted: 10/10/2008] [Indexed: 11/23/2022]
Abstract
Chitosan-coated magnetic nanoparticles (CCMNPs), modified with a biodegradable and eco-friendly biologic reagent, alpha-ketoglutaric acid (alpha-KA), was used as a magnetic nanoadsorbent to remove toxic Cu(2+) ions from aqueous solution. The prepared magnetic nanoadsorbents were characterized by FTIR, TEM, VSM, XRD, and EDS. Factors influencing the adsorption of Cu(2+), e.g., initial metal concentration, initial pH, contact time and adsorbent concentration were investigated. TEM images show that the dimension of multidispersed circular particles is about 30 nm and no marked aggregation occurs. VSM patterns indicate superparamagnetic properties of magnetic nanoadsorbents. EDS pictures confirm the presence of the Cu(2+) on the surface of magnetic nanoadsorbents. Equilibrium studies show that Cu(2+) adsorption data follow Langmuir model. The maximum adsorption capacity (q(max)) for Cu(2+) ions was estimated to be 96.15 mg/g, which was higher than that of pure CCMNPs. The desorption data show no significant desorption hysteresis occurred. In addition, the high stability and recovery capacity of the chitosan-coated magnetic nanoparticles modified with alpha-ketoglutaric acid (alpha-KA-CCMNPs) suggest that these novel magnetic nanoadsorbents have potential applications for removing Cu(2+) from wastewater.
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