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Cheng S, Li N, Jiang L, Li Y, Xu B, Zhou W. Biodegradation of metal complex Naphthol Green B and formation of iron-sulfur nanoparticles by marine bacterium Pseudoalteromonas sp CF10-13. BIORESOURCE TECHNOLOGY 2019; 273:49-55. [PMID: 30408643 DOI: 10.1016/j.biortech.2018.10.082] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Revised: 10/28/2018] [Accepted: 10/29/2018] [Indexed: 06/08/2023]
Abstract
Treatment of metal complex dye wastewater has attracted growing attention due to the degradation-resistant, high cost and potential hazards of current techniques. This study reported a marine bacterium (Pseudoalteromonas sp CF10-13) with potential performance in decolorization and degradation of a metal complex dye-Naphthol Green B (NGB) at wide ranges of salinity, dye concentration and alkalinity under anaerobic conditions. It was inferred that the secretion of electron mediators in soluble extracellular metabolites by P. sp CF10-13 played important roles in NGB decolorization and degradation through extracellular electron transfer. Naphthalenesulfonate, the major structure in NGB molecule, was further degraded into low-toxic benzamide. Black stable iron-sulfur nanoparticles were formed endogenously avoiding H2S releasing, exogenous sulfur addition and metal sludge in accumulation. Accordingly, this study provided a cost-effective and eco-friendly biodegradation method to refractory NGB, further promoting the understanding of dye resources recovery.
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Affiliation(s)
- Shuhua Cheng
- School of Environmental Science and Engineering, Shandong University, Jinan, Shandong 250100, China
| | - Na Li
- School of Environmental Science and Engineering, Shandong University, Jinan, Shandong 250100, China
| | - Li Jiang
- School of Environmental Science and Engineering, Shandong University, Jinan, Shandong 250100, China
| | - Yating Li
- School of Environmental Science and Engineering, Shandong University, Jinan, Shandong 250100, China
| | - Baiheng Xu
- School of Environmental Science and Engineering, Shandong University, Jinan, Shandong 250100, China
| | - Weizhi Zhou
- School of Environmental Science and Engineering, Shandong University, Jinan, Shandong 250100, China.
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Roșu CM, Vochița G, Mihășan M, Avădanei M, Mihai CT, Gherghel D. Performances of Pichia kudriavzevii in decolorization, biodegradation, and detoxification of C.I. Basic Blue 41 under optimized cultural conditions. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:431-445. [PMID: 30406584 DOI: 10.1007/s11356-018-3651-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Accepted: 10/31/2018] [Indexed: 06/08/2023]
Abstract
The aim of this study was to evaluate the performances of Pichia kudriavzevii CR-Y103 yeast strain for the decolorization, biodegradation, and detoxification of cationic dye C.I. Basic Blue 41, a toxic compound to aquatic life with long-lasting effects. Under optimized cultural conditions (10.0-g L-1 glucose, 0.2-g L-1 yeast extract, and 1.0-g L-1 (NH4)2SO4), the yeast strain was able to decolorize 97.86% of BB41 (50 mg L-1) at pH 6 within 4 h of incubation at 30 °C under shaken conditions (12,238.00-μg h-1 average decolorization rate) and 100% within 12 h. The UV-Vis spectral analysis, high-performance liquid chromatography (HPLC), and Fourier-transform infrared spectroscopy (FTIR) analysis confirmed the complete decolorization and degradation of the BB41 dye by P. kudriavzevii CR-Y103. Also, other seven yeast strains, isolated from soil, as P. kudriavzevii (CR-Y108, CR-Y119, and CR-Y112), Candida tropicalis CR-Y128, Cyberlindnera saturnus CR-Y125, and Candida solani CR-Y124 have shown a promising decolorizing potential of azo-dye BB41 (99.89-76.09% decolorization). Phytotoxicity, cytotoxicity, and genotoxicity assays on Trifolium pratense and Triticum aestivum seedlings confirmed the high toxicity of BB41 dye (500 ppm), with inhibition on germination rate (%), root and shoot elongation, decreasing of mitoxic index value (with 34.03% in T. pratense and 40.25% in T. aestivum), and increasing the frequency of chromosomal aberrations (6.87 times in T. pratense and 6.25 times in T. aestivum), compared to control. The same biomarkers indicated the nontoxic nature of the BB41 degraded metabolite (500 ppm) obtained after P. kudriavzevii CR-Y103 treatment. Moreover, the healthy monkey kidney cells (Vero cells) had a low sensitivity to BB41 biodegraded products (250 μg mL-1) (MTT cell viability assay) and revealed minor DNA damage (comet assay) compared to BB41 dye treatment. These findings show that P. kudriavzevii could be used in eco-friendly bioremediation technologies, applicable for reducing the toxicity of basic azo-dyes containing wastewaters.
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Affiliation(s)
- Crăița Maria Roșu
- Department of Experimental and Applied Biology, NIRDBS-Institute of Biological Research Iasi, Lascar Catargi 47, 700107, Iasi, Romania.
| | - Gabriela Vochița
- Department of Experimental and Applied Biology, NIRDBS-Institute of Biological Research Iasi, Lascar Catargi 47, 700107, Iasi, Romania
| | - Marius Mihășan
- Department of Biology, "Alexandru Ioan Cuza" University of Iasi, Carol I 11, 700506, Iasi, Romania
| | - Mihaela Avădanei
- Department of Physics of Polymers and Polymeric Materials, "P. Poni" Institute of Macromolecular Chemistry, Gr. GhicaVoda 41A, 700487, Iasi, Romania
| | - Cosmin Teodor Mihai
- Department of Experimental and Applied Biology, NIRDBS-Institute of Biological Research Iasi, Lascar Catargi 47, 700107, Iasi, Romania
- Advanced Research and Development Center in Experimental Medicine CEMEX, "Grigore T. Popa" University of Medicine and Pharmacy, Universitatii 16, 700115, Iasi, Romania
| | - Daniela Gherghel
- Department of Experimental and Applied Biology, NIRDBS-Institute of Biological Research Iasi, Lascar Catargi 47, 700107, Iasi, Romania
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Liu W, You Y, Sun D, Wang S, Zhu J, Liu C. Decolorization and detoxification of water-insoluble Sudan dye by Shewanella putrefaciens CN32 co-cultured with Bacillus circulans BWL1061. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 166:11-17. [PMID: 30240930 DOI: 10.1016/j.ecoenv.2018.09.055] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2018] [Revised: 09/08/2018] [Accepted: 09/11/2018] [Indexed: 06/08/2023]
Abstract
Effluents loaded with various synthetic dyes are considered as a huge burden to the surrounding ecosystems. Sudan dyes are relatively difficult to decolorize due to its water-insolubility. In the present study, the strain Shewanella putrefaciens CN32 was firstly applied to decolorize Sudan dyes under the anaerobic condition, and the physicochemical parameters on the decolorization were optimized. The results demonstrated that the suitable decolorization condition was temperature 26 °C, initial pH 7.0-8.0 and NaCl concentrations 0-20 g/L. Electron competitive acceptors including nitrite, nitrate, dimethyl sulphoxide and oxygen could cause the significant inhibition to the decolorization of Sudan dyes. Biosurfactant rhamnolipid played a positive role in enhancing the decolorization of Sudan I. The co-culture of S. putrefaciens CN32 and Bacillus circulans BWL1061 is reported for the first time to accelerate the decolorization through improving the synergistic effect of enzymatic degradation and biological reductive effect. The highest decolorization of 90.23% to Sudan I was achieved within 108 h, suggesting that co-culture technique has a good potential in the treatment of dyeing wastewater. Furthermore, the microbial toxicity tests indicated that the toxicity of Sudan I to Escherichia coli BL21 and Bacillus subtilis 168 was obviously decreased after the decolorization.
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Affiliation(s)
- Weijie Liu
- School of Life Science, The Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, Jiangsu Normal University, Xuzhou 221116, Jiangsu Province, China
| | - Yanting You
- School of Life Science, The Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, Jiangsu Normal University, Xuzhou 221116, Jiangsu Province, China
| | - Di Sun
- School of Life Science, The Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, Jiangsu Normal University, Xuzhou 221116, Jiangsu Province, China
| | - Shiwei Wang
- School of Chemical Engineering and Energy Technology, Dongguan University of Technology, Dongguan, China
| | - Jingrong Zhu
- School of Life Science, The Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, Jiangsu Normal University, Xuzhou 221116, Jiangsu Province, China
| | - Cong Liu
- School of Life Science, The Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, Jiangsu Normal University, Xuzhou 221116, Jiangsu Province, China.
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Kumar R, Negi S, Sharma P, Prasher IB, Chaudhary S, Dhau JS, Umar A. Wastewater cleanup using Phlebia acerina fungi: An insight into mycoremediation. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2018; 228:130-139. [PMID: 30216827 DOI: 10.1016/j.jenvman.2018.07.091] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2018] [Revised: 05/13/2018] [Accepted: 07/26/2018] [Indexed: 06/08/2023]
Abstract
The scarcity of available drinking water has led the researchers to develop novel and cost-effective ways of bioremediation process for wastewater treatment. Bioremediation is a cost-effective and environmentally sound method for the removal of toxic compounds. Such approach is not only a chemical-less effort but also an energy savior. In the present work Phlebia acerina, a white rot wood rotting fungi have been used to degrade the toxic wastewater pollutants. Congo Red (CR) and Eriochrome Black T (EBT) have been selected as model pollutants to test the wastewater cleaning ability of the fungus. The Lignin modifying enzyme (LME) and Cellulolytic enzyme assays (CMC) potential of Phlebia acerina helped in understanding the dye degradation mechanism. Under the optimum conditions, the fungi was able to degrade as high as 92.4% CR while the EBT was degraded to a maximum of 50%. Phlebia acerina was found to show first-order kinetics of dyes degradation. Further, the seed germination and antimicrobial assay of treated and untreated water were carried out in order to establish the formation of non-toxic end product after degradation.
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Affiliation(s)
- Rajeev Kumar
- Department of Environment Studies, Panjab University, Chandigarh 160014, India.
| | - Sushma Negi
- Department of Environment Studies, Panjab University, Chandigarh 160014, India
| | - Priyanka Sharma
- Department of Environment Studies, Panjab University, Chandigarh 160014, India
| | - I B Prasher
- Department of Botany, Panjab University, Chandigarh 160014, India
| | - Savita Chaudhary
- Department of Chemistry and Center of Advanced Studies in Chemistry, Panjab University, Chandigarh 160014, India
| | | | - Ahmad Umar
- Department of Chemistry, College of Science and Arts, Najran University, Najran, 11001, Saudi Arabia; Promising Centre for Sensors and Electronic Devices (PCSED), Najran University, Najran, 11001, Saudi Arabia.
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55
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Martorell MM, Rosales Soro MDM, Pajot HF, de Figueroa LIC. Optimization and mechanisms for biodecoloration of a mixture of dyes by Trichosporon akiyoshidainum HP 2023. ENVIRONMENTAL TECHNOLOGY 2018; 39:3169-3180. [PMID: 28859550 DOI: 10.1080/09593330.2017.1375024] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2017] [Accepted: 08/27/2017] [Indexed: 06/07/2023]
Abstract
Trichosporon akiyoshidainum HP2023 is a basidiomycetous yeast isolated from Las Yungas rainforest (Tucumán, Argentina) and selected based on its outstanding textile-dye-decolorizing ability. In this work, the decolorization process was optimized using Reactive Black 5 as dye model. Lactose and urea were chosen as carbon and nitrogen sources through a one-at-time approach. Afterwards, factorial designs were employed for medium optimization, leading to the formulation of a simpler optimized medium which contains in g L-1: lactose 10, yeast extract 1, urea 0.5, KH2PO4 1 and MgSO4 1. Temperature and agitation conditions were also optimized. The optimized medium and incubation conditions for dye removal were extrapolated to other dyes individually and a mixture of them. Dye removal process happened through both biosorption and biodegradation mechanisms, depending primarily on the dye structure. A positive relation between initial inoculum and dye removal rate and a negative relation between initial dye concentration and final dye removal percentages were found. Under optimized conditions, T. akiyoshidainum HP2023 was able to completely remove a mixture of dyes up to a concentration of 300 mg L-1, a concentration much higher than those expected in real effluents.
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Affiliation(s)
| | - María Del M Rosales Soro
- b PROIMI - CONICET (Planta Piloto de Procesos Industriales Microbiológicos) , Tucumán , Argentina
| | - Hipólito F Pajot
- b PROIMI - CONICET (Planta Piloto de Procesos Industriales Microbiológicos) , Tucumán , Argentina
| | - Lucía I C de Figueroa
- b PROIMI - CONICET (Planta Piloto de Procesos Industriales Microbiológicos) , Tucumán , Argentina
- c Cátedra de Microbiología Superior, Facultad de Bioquímica, Química y Farmacia , Universidad Nacional de Tucumán , Tucumán , Argentina
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56
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Mediterranean forested wetlands are yeast hotspots for bioremediation: a case study using azo dyes. Sci Rep 2018; 8:15943. [PMID: 30374188 PMCID: PMC6206003 DOI: 10.1038/s41598-018-34325-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Accepted: 10/16/2018] [Indexed: 11/15/2022] Open
Abstract
Forested wetlands are interfaces between terrestrial and aquatic environments. These ecosystems play an important role in the hydrology, chemistry and biodiversity maintenance. Despite their high microbial diversity, there has been a lack of attention to the potential of their yeast communities. The purpose of this study is to evaluate the potential of yeasts isolated from a Mediterranean forested wetlands in decolorizing azo dyes. Azo dyes are synthetic, and highly recalcitrant to degradation. Ninety-two out of 560 isolates were randomly chosen to assess their ability to decolorize five azo dyes. Hierarchical clustering based on medium color changes during incubations was used to evaluate the isolates’ decolorization performance. All of the isolates that best degraded the 5 dyes tested were identified as Basidiomycota (Filobasidiales, Tremellales and Sporidiobolales). This work identifies new azo dye-degrading yeast species, and supports the hypothesis that forested wetlands are a niche for yeasts with bioremediation potential - namely azo dyes removal.
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57
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Song Z, Song L, Shao Y, Tan L. Degradation and detoxification of azo dyes by a salt-tolerant yeast Cyberlindnera samutprakarnensis S4 under high-salt conditions. World J Microbiol Biotechnol 2018; 34:131. [DOI: 10.1007/s11274-018-2515-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Accepted: 08/09/2018] [Indexed: 10/28/2022]
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58
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Cui Z, Luan X, Jiang H, Li Q, Xu G, Sun C, Zheng L, Song Y, Davison PA, Huang WE. Application of a bacterial whole cell biosensor for the rapid detection of cytotoxicity in heavy metal contaminated seawater. CHEMOSPHERE 2018; 200:322-329. [PMID: 29494913 DOI: 10.1016/j.chemosphere.2018.02.097] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Revised: 02/13/2018] [Accepted: 02/16/2018] [Indexed: 06/08/2023]
Abstract
A toxicity biosensor Acinetobacter baylyi Tox2 was constructed with the host strain A. baylyi ADP1 harboring a new and medium-copy-number plasmid pWH1274_lux, and was applied to detect the cytotoxicity of heavy metal contaminated seawater. The gene cassette luxCDABE was controlled by constitutively expressed promoter Ptet on pWH1274_lux and the bioluminescence intensity of the biosensor reduces in proportional to the concentrations of toxic compounds. A. baylyi Tox2 exhibits tolerance to salinity, hence it is applicable to seawater samples. A. baylyi Tox2 and Mugilogobius chulae were exposed to different concentrations of heavy metals (Hg2+, Zn2+, Cu2+, and Cd2+) in artificial seawater for performance comparison and Pearson correlation analysis showed a significant correlation (p < 0.01) between A. baylyi Tox2 toxicity detection and the fish (M. chulae) exposure test. This suggests that the performance of A. baylyi Tox2 is comparable to the conventional fish toxicity test in terms of cytotoxicity detection of heavy metal contaminated seawater. Furthermore, A. baylyi Tox2 was used to evaluate cytotoxicity of field-collected seawater samples. The results indicate that there was a significant correlation between the luminescence inhibition ratio (IR) of A. baylyi Tox2 and heavy metal concentrations detected by ICP-MS in the samples. Two seawater samples, which contained a high concentration of total heavy metals, exhibited stronger cytotoxicity than the samples containing low concentrations of heavy metals. In conclusion, A. baylyi Tox2 can be used as an alternative tool to aquatic animals for the evaluation of the cytotoxicity of heavy metal contamination in the marine environment.
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Affiliation(s)
- Zhisong Cui
- Marine Ecology Research Center, First Institute of Oceanography, State Oceanic Administration of China, Qingdao, 266061, China.
| | - Xiao Luan
- Marine Ecology Research Center, First Institute of Oceanography, State Oceanic Administration of China, Qingdao, 266061, China; State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
| | - Huichao Jiang
- Shandong Marine Resource and Environment Research Institute, Yantai, 264006, China
| | - Qian Li
- Marine Ecology Research Center, First Institute of Oceanography, State Oceanic Administration of China, Qingdao, 266061, China
| | - Guangfei Xu
- Marine Ecology Research Center, First Institute of Oceanography, State Oceanic Administration of China, Qingdao, 266061, China
| | - Chengjun Sun
- Marine Ecology Research Center, First Institute of Oceanography, State Oceanic Administration of China, Qingdao, 266061, China
| | - Li Zheng
- Marine Ecology Research Center, First Institute of Oceanography, State Oceanic Administration of China, Qingdao, 266061, China
| | - Yizhi Song
- Department of Engineering Science, University of Oxford, Parks Road, Oxford, OX1 3PJ, United Kingdom
| | - Paul A Davison
- Department of Molecular Biology and Biotechnology, University of Sheffield, Sheffield, S10 2TN, United Kingdom
| | - Wei E Huang
- Department of Engineering Science, University of Oxford, Parks Road, Oxford, OX1 3PJ, United Kingdom.
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He XL, Song C, Li YY, Wang N, Xu L, Han X, Wei DS. Efficient degradation of Azo dyes by a newly isolated fungus Trichoderma tomentosum under non-sterile conditions. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 150:232-239. [PMID: 29288904 DOI: 10.1016/j.ecoenv.2017.12.043] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Revised: 12/17/2017] [Accepted: 12/19/2017] [Indexed: 06/07/2023]
Abstract
A fast-growing fungus with remarkable ability to degrade several azo dyes under non-sterile conditions was isolated and identified. This fungus was identified as Trichoderma tomentosum. Textile effluent of ten-fold dilution could be decolorized by 94.9% within 72h before optimization. Acid Red 3R model wastewater with a concentration of 85.5mgL-1 could be decolorized by 99.2% within the same time after optimization. High-level of manganese peroxidase and low-level of lignin peroxidase activities were detected during the process of decolorization from the culture supernatant, indicating the possible involvement of two enzymes in azo dye decolorization. No aromatic amine products were detected from the degradation products of Acid Red 3R by gas chromatography-mass spectrometry (GC/MS) analysis, indicating the possible involvement of a special symmetrical oxidative degradation pathway. Phytotoxicity assay confirmed the lower toxicity toward the test plant seeds of the degradation products when compared to the original dye.
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Affiliation(s)
- Xiao-Ling He
- a State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Engineering Center for Safety Evaluation of Water Quality & Safeguards Technology, School of Environment and Chemical Engineering, Tianjin Polytechnic University, Tianjin 300387, China.
| | - Chao Song
- a State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Engineering Center for Safety Evaluation of Water Quality & Safeguards Technology, School of Environment and Chemical Engineering, Tianjin Polytechnic University, Tianjin 300387, China
| | - Yuan-Yuan Li
- a State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Engineering Center for Safety Evaluation of Water Quality & Safeguards Technology, School of Environment and Chemical Engineering, Tianjin Polytechnic University, Tianjin 300387, China
| | - Ning Wang
- a State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Engineering Center for Safety Evaluation of Water Quality & Safeguards Technology, School of Environment and Chemical Engineering, Tianjin Polytechnic University, Tianjin 300387, China
| | - Lei Xu
- a State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Engineering Center for Safety Evaluation of Water Quality & Safeguards Technology, School of Environment and Chemical Engineering, Tianjin Polytechnic University, Tianjin 300387, China
| | - Xin Han
- Tianjin Rongtai Water Corporation, Tianjin 300000, China
| | - Dong-Sheng Wei
- Key Laboratory of molecular microbiology and technology, Ministry of education, College of Life Sciences, Nankai University, Tianjin 300071,China.
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Vikrant K, Giri BS, Raza N, Roy K, Kim KH, Rai BN, Singh RS. Recent advancements in bioremediation of dye: Current status and challenges. BIORESOURCE TECHNOLOGY 2018; 253:355-367. [PMID: 29352640 DOI: 10.1016/j.biortech.2018.01.029] [Citation(s) in RCA: 186] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Revised: 01/01/2018] [Accepted: 01/05/2018] [Indexed: 05/23/2023]
Abstract
The rampant industrialization and unchecked growth of modern textile production facilities coupled with the lack of proper treatment facilities have proliferated the discharge of effluents enriched with toxic, baleful, and carcinogenic pollutants including dyes, heavy metals, volatile organic compounds, odorants, and other hazardous materials. Therefore, the development of cost-effective and efficient control measures against such pollution is imperative to safeguard ecosystems and natural resources. In this regard, recent advances in biotechnology and microbiology have propelled bioremediation as a prospective alternative to traditional treatment methods. This review was organized to address bioremediation as a practical option for the treatment of dyes by evaluating its performance and typical attributes. It further highlights the current hurdles and future prospects for the abatement of dyes via biotechnology-based remediation techniques.
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Affiliation(s)
- Kumar Vikrant
- Department of Chemical Engineering and Technology, Centre of Advanced Study, Indian Institute of Technology, Banaras Hindu University, Varanasi 221005, India
| | - Balendu Shekhar Giri
- Department of Chemical Engineering and Technology, Centre of Advanced Study, Indian Institute of Technology, Banaras Hindu University, Varanasi 221005, India
| | - Nadeem Raza
- Government Emerson College affiliated with Bahauddin Zakariya University, Multan 60800, Pakistan; Department of Materials Science and Metallurgy, University of Cambridge, CB3 0FS, United Kingdom
| | - Kangkan Roy
- Department of Chemical Engineering and Technology, Centre of Advanced Study, Indian Institute of Technology, Banaras Hindu University, Varanasi 221005, India
| | - Ki-Hyun Kim
- Department of Civil and Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seoul 04763, Republic of Korea.
| | - Birendra Nath Rai
- Department of Chemical Engineering and Technology, Centre of Advanced Study, Indian Institute of Technology, Banaras Hindu University, Varanasi 221005, India
| | - Ram Sharan Singh
- Department of Chemical Engineering and Technology, Centre of Advanced Study, Indian Institute of Technology, Banaras Hindu University, Varanasi 221005, India
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Haroon M, Wang L, Yu H, Ullah RS, Zain-ul-Abdin, Khan RU, Chen Q, Liu J. Synthesis of carboxymethyl starch-g-polyvinylpyrolidones and their properties for the adsorption of Rhodamine 6G and ammonia. Carbohydr Polym 2018; 186:150-158. [DOI: 10.1016/j.carbpol.2018.01.052] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Revised: 01/16/2018] [Accepted: 01/17/2018] [Indexed: 10/17/2022]
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Chen Y, Feng L, Li H, Wang Y, Chen G, Zhang Q. Biodegradation and detoxification of Direct Black G textile dye by a newly isolated thermophilic microflora. BIORESOURCE TECHNOLOGY 2018; 250:650-657. [PMID: 29220809 DOI: 10.1016/j.biortech.2017.11.092] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Revised: 11/23/2017] [Accepted: 11/27/2017] [Indexed: 06/07/2023]
Abstract
The biodegradation and detoxification of azo dye - Direct Black G (DBG) with a newly isolated thermophilic microflora was investigated in the present study. It was found this microflora can decolorize DBG at a wide range of pH from 5 to 10, and grow well under high concentration of dye (600 mg·L-1) and salinity (50 g·L-1). Its decolorization ratio could reach 97% with 8 h of incubation at optimal conditions. The induction of laccase, manganese peroxidase, lignin peroxidase and azoreductase suggests their synergetic involvements in the degradation process of DBG. In addition, the phytotoxicity analysis indicated the thermophilic microflora converted toxic dye DBG into low toxicity metabolites. PCR-DGGE analysis revealed that there are nine different bacteria presented in this microflora. Furthermore, a new degradation pathway of DBG degradation by this microflora was proposed based on the intermediates identified by LC-ESI-MS/MS.
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Affiliation(s)
- Yan Chen
- College of Bioscience and Biotechnology, Jiangxi Agricultural University, Jiangxi Engineering Laboratory for the Development and Utilization of Agricultural Microbial Resources, Nanchang 330045, PR China; Jiangxi Key Laboratory for Conservation and Utilization of Fungal Resources, Jiangxi Agricultural University, Nanchang 330045, PR China
| | - Linlin Feng
- College of Bioscience and Biotechnology, Jiangxi Agricultural University, Jiangxi Engineering Laboratory for the Development and Utilization of Agricultural Microbial Resources, Nanchang 330045, PR China; Jiangxi Key Laboratory for Conservation and Utilization of Fungal Resources, Jiangxi Agricultural University, Nanchang 330045, PR China
| | - Hanguang Li
- College of Bioscience and Biotechnology, Jiangxi Agricultural University, Jiangxi Engineering Laboratory for the Development and Utilization of Agricultural Microbial Resources, Nanchang 330045, PR China; Jiangxi Key Laboratory for Conservation and Utilization of Fungal Resources, Jiangxi Agricultural University, Nanchang 330045, PR China
| | - Yuanxiu Wang
- College of Bioscience and Biotechnology, Jiangxi Agricultural University, Jiangxi Engineering Laboratory for the Development and Utilization of Agricultural Microbial Resources, Nanchang 330045, PR China; Jiangxi Key Laboratory for Conservation and Utilization of Fungal Resources, Jiangxi Agricultural University, Nanchang 330045, PR China
| | - Guotao Chen
- College of Bioscience and Biotechnology, Jiangxi Agricultural University, Jiangxi Engineering Laboratory for the Development and Utilization of Agricultural Microbial Resources, Nanchang 330045, PR China; Jiangxi Key Laboratory for Conservation and Utilization of Fungal Resources, Jiangxi Agricultural University, Nanchang 330045, PR China
| | - Qinghua Zhang
- College of Bioscience and Biotechnology, Jiangxi Agricultural University, Jiangxi Engineering Laboratory for the Development and Utilization of Agricultural Microbial Resources, Nanchang 330045, PR China; Jiangxi Key Laboratory for Conservation and Utilization of Fungal Resources, Jiangxi Agricultural University, Nanchang 330045, PR China.
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Hadibarata T, Syafiuddin A, Al-Dhabaan FA, Elshikh MS, Rubiyatno. Biodegradation of Mordant orange-1 using newly isolated strain Trichoderma harzianum RY44 and its metabolite appraisal. Bioprocess Biosyst Eng 2018; 41:621-632. [PMID: 29349549 DOI: 10.1007/s00449-018-1897-0] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Accepted: 12/19/2017] [Indexed: 11/29/2022]
Abstract
Herein, we systematically reported the capability of T. harzianum RY44 for decolorization of Mordant orange-1. The fungi strains were isolated from the Universiti Teknologi Malaysia tropical rain forest. For initial screening, the decolorization was conducted using 50 strains of the fungi for 20 days incubation time and the best performance was selected. Then, the decolorization capability and fungal biomass were evaluated using different dye concentrations, namely, 0, 50, 75 and 100 ppm. Effects of the carbon sources (fructose, glucose, and galactose), nitrogen sources (ammonium nitrate, ammonium sulfate and yeast extract), surfactant (tween 80), aromatic compounds (benzoic acid, catechol and salicylic acid), and pH on the decolorization efficiency were examined. This study has found that the employed carbon sources, nitrogen sources, and aromatic compounds strongly enhance the decolorization efficiency. In addition, increasing the surfactant volume and pH generally decreased the decolorization efficiencies from 19.5 to 9.0% and 81.7 to 60.5%, respectively. In the mechanism philosophy, the present work has found that Mordant orange-1 were initially degraded by T. harzianum RY44 to benzoic acid and finally transformed into salicylic acid.
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Affiliation(s)
- Tony Hadibarata
- Department of Environmental Engineering, Faculty of Engineering and Science, Curtin University, 98009, Miri, Sarawak, Malaysia.
| | - Achmad Syafiuddin
- Department of Environmental Engineering, Faculty of Civil Engineering, Universiti Teknologi Malaysia, UTM, 81310, Johor Bahru, Johor, Malaysia
| | - Fahad A Al-Dhabaan
- Department of Biology, Science and Humanities College Alquwayiyah, Sharqa University, Alquwayiyah, Kingdom of Saudi Arabia
| | - Mohamed Soliman Elshikh
- Botany and Microbiology Department, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Rubiyatno
- Department of Environmental Engineering, Faculty of Civil Engineering, Universiti Teknologi Malaysia, UTM, 81310, Johor Bahru, Johor, Malaysia
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Liu C, You Y, Zhao R, Sun D, Zhang P, Jiang J, Zhu A, Liu W. Biosurfactant production from Pseudomonas taiwanensis L1011 and its application in accelerating the chemical and biological decolorization of azo dyes. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2017; 145:8-15. [PMID: 28689070 DOI: 10.1016/j.ecoenv.2017.07.012] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Revised: 06/29/2017] [Accepted: 07/03/2017] [Indexed: 06/07/2023]
Abstract
Dye dispersion and the interaction efficiency between azoreductases and dye molecules are rate-limiting steps for the decolorization of azo dyes. In this study, a biosurfactant-producing strain, Pseudomonas taiwanensis L1011, was isolated from crude oil. To increase the yield of the biosurfactant BS-L1011 from P. taiwanensis L1011, culture conditions were optimized including temperature, initial pH, carbon source, nitrogen source and C/N ratio. A maximum yield of 1.12g/L of BS-L1011 was obtained using D-mannitol as carbon source and yeast extract/urea as compound nitrogen source with C/N ratio of 10/4, pH 7.0 and 28°C. BS-L1011 exhibited a low critical micelle concentration (CMC) of 10.5mg/L and was able to reduce the surface tension of water to 25.8±0.1 mN/m. BS-L1011 was stable over a wide range of temperatures, pH values and salt concentrations. The biosurfactant is reported for the first time to accelerate chemical decolorization of Congo red by sodium hypochlorite, and biological decolorization of Amaranth by Bacillus circulans BWL1061, thus showing a potential in the treatment of dyeing wastewater.
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Affiliation(s)
- Cong Liu
- School of Life Science, The Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, Jiangsu Normal University, No. 101, Shanghai Road, Tongshan District, Xuzhou 221116, Jiangsu Province, China
| | - Yanting You
- School of Life Science, The Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, Jiangsu Normal University, No. 101, Shanghai Road, Tongshan District, Xuzhou 221116, Jiangsu Province, China
| | - Ruofei Zhao
- School of Life Science, The Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, Jiangsu Normal University, No. 101, Shanghai Road, Tongshan District, Xuzhou 221116, Jiangsu Province, China
| | - Di Sun
- School of Life Science, The Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, Jiangsu Normal University, No. 101, Shanghai Road, Tongshan District, Xuzhou 221116, Jiangsu Province, China
| | - Peng Zhang
- School of Life Science, The Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, Jiangsu Normal University, No. 101, Shanghai Road, Tongshan District, Xuzhou 221116, Jiangsu Province, China
| | - Jihong Jiang
- School of Life Science, The Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, Jiangsu Normal University, No. 101, Shanghai Road, Tongshan District, Xuzhou 221116, Jiangsu Province, China
| | - Aihua Zhu
- School of Life Science, The Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, Jiangsu Normal University, No. 101, Shanghai Road, Tongshan District, Xuzhou 221116, Jiangsu Province, China
| | - Weijie Liu
- School of Life Science, The Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, Jiangsu Normal University, No. 101, Shanghai Road, Tongshan District, Xuzhou 221116, Jiangsu Province, China.
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Karabacak Atay Ç, Gökalp M, Kart SÖ, Tilki T. Mono azo dyes derived from 5-nitroanthranilic acid: Synthesis, absorption properties and DFT calculations. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2017.03.107] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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66
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Liu W, Liu C, Liu L, You Y, Jiang J, Zhou Z, Dong Z. Simultaneous decolorization of sulfonated azo dyes and reduction of hexavalent chromium under high salt condition by a newly isolated salt-tolerant strain Bacillus circulans BWL1061. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2017; 141:9-16. [PMID: 28284151 DOI: 10.1016/j.ecoenv.2017.03.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2016] [Revised: 03/01/2017] [Accepted: 03/06/2017] [Indexed: 06/06/2023]
Abstract
The co-existence of dyes, Cr(VI) and high concentration of salt in dyeing wastewater causes serious and complex environmental problems. In this study, a salt-tolerant strain Bacillus circulans BWL1061 was reported to simultaneously remove 50mg/L methyl orange and 50mg/L Cr(VI) under the anaerobic condition with 60g/L NaCl. During the decolorization process, the Cr(VI) reduction occurred preferentially over the dye decolorization due to the dominate utilization of electron by Cr(VI). The analysis of enzyme activities suggested that azoreductase, NADH-DCIP reductase, and laccase were associated with decolorization of methyl orange. A possible degradation pathway was proposed based on the metabolites analysis. The decolorization of methyl orange is involved in the symmetric cleavage of azo bond, which formed N,N-dimethyl p-phenylenediamine and 4-amino sulfonic acid, or the asymmetric cleavage of azo bond, which formed 4-(dimethylamino) phenol and 4-diazenylbenzene sulfonic acid. Phytotoxicity assays showed that strain BWL1061 could decrease the toxicity of methyl orange to Triticum aestivum, Pogostemon cablin and Isatis indigotica Fort during the decolorization process. In this study, Bacillus circulans is reported for the first time that could simultaneously remove azo dyes and Cr (VI) under high salt condition.
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Affiliation(s)
- Weijie Liu
- School of Life Science, The Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, Jiangsu Normal University, Xuzhou 221116, Jiangsu Province, China.
| | - Cong Liu
- School of Life Science, The Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, Jiangsu Normal University, Xuzhou 221116, Jiangsu Province, China
| | - Liang Liu
- School of Life Science, The Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, Jiangsu Normal University, Xuzhou 221116, Jiangsu Province, China
| | - Yanting You
- School of Life Science, The Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, Jiangsu Normal University, Xuzhou 221116, Jiangsu Province, China
| | - Jihong Jiang
- School of Life Science, The Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, Jiangsu Normal University, Xuzhou 221116, Jiangsu Province, China
| | - Zhengkun Zhou
- School of Life Science, The Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, Jiangsu Normal University, Xuzhou 221116, Jiangsu Province, China
| | - Zhen Dong
- School of Life Science, The Key Laboratory of Biotechnology for Medicinal Plant of Jiangsu Province, Jiangsu Normal University, Xuzhou 221116, Jiangsu Province, China
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Mahmood F, Shahid M, Hussain S, Shahzad T, Tahir M, Ijaz M, Hussain A, Mahmood K, Imran M, Babar SAK. Potential plant growth-promoting strain Bacillus sp. SR-2-1/1 decolorized azo dyes through NADH-ubiquinone:oxidoreductase activity. BIORESOURCE TECHNOLOGY 2017; 235:176-184. [PMID: 28365345 DOI: 10.1016/j.biortech.2017.03.098] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Revised: 03/13/2017] [Accepted: 03/17/2017] [Indexed: 06/07/2023]
Abstract
In this study, a bacterial strain SR-2-1/1 was isolated from textile wastewater-irrigated soil for its concurrent potential of plant growth promotion and azo-dye decolorization. Analysis of 16S rRNA gene sequence confirmed its identity as Bacillus sp. The strain tolerated high concentrations (i.e. up to 1000mgL-1) of metals (Ni2+, Cd2+, Co2+, Zn2+, and Cr6+) and efficiently decolorized the azo dyes (i.e. reactive black-5, reactive red-120, direct blue-1 and congo red). It also demonstrated considerable in vitro phosphate solubilizing and 1-aminocyclopropane-1-carboxylic acid deaminase abilities at high metal and salt levels. Bioinformatics analysis of its 537bp azoreductase gene and deduced protein revealed that it decolorized azo dyes through NADH-ubiquinone:oxidoreductase enzyme activity. The deduced protein was predicted structurally and functionally different to those of its closely related database proteins. Thus, the strain SR-2-1/1 is a powerful bioinoculant for bioremediation of textile wastewater contaminated soils in addition to stimulation of plant growth.
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Affiliation(s)
- Faisal Mahmood
- Department of Environmental Sciences & Engineering, Government College University Faisalabad, 38000, Pakistan
| | - Muhammad Shahid
- Department of Bioinformatics & Biotechnology, Government College University Faisalabad, 38000, Pakistan.
| | - Sabir Hussain
- Department of Environmental Sciences & Engineering, Government College University Faisalabad, 38000, Pakistan
| | - Tanvir Shahzad
- Department of Environmental Sciences & Engineering, Government College University Faisalabad, 38000, Pakistan
| | - Muhammad Tahir
- Department of Environmental Sciences, COMSATS Institute of Information Technology, Vehari Campus, Pakistan
| | - Muhammad Ijaz
- College of Agriculture, Bahauddin Zakariya University, Bahadur Sub-Campus Layyah, Pakistan
| | - Athar Hussain
- National Institute for Biotechnology and Genetic Engineering (NIBGE), Faisalabad, Pakistan
| | - Khalid Mahmood
- Department of Agro-ecology, Faculty of Science and Technology, Aarhus University, Denmark
| | - Muhammad Imran
- Department of Soil Science, Muhammad Nawaz Shareef University of Agriculture, Multan, Pakistan; Soil Science Division, Nuclear Institute for Agriculture and Biology (NIAB), Faisalabad 38000, Pakistan
| | - Shahid Ali Khan Babar
- Department of Environmental Sciences & Engineering, Government College University Faisalabad, 38000, Pakistan
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68
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Šlosarčíková P, Novotný Č, Malachová K, Válková H, Fojtík J. Effect of yeasts on biodegradation potential of immobilized cultures of white rot fungi. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 589:146-152. [PMID: 28259434 DOI: 10.1016/j.scitotenv.2017.02.079] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2016] [Revised: 12/30/2016] [Accepted: 02/09/2017] [Indexed: 06/06/2023]
Abstract
The aim was to investigate the effect of yeast organisms on the degradation process by immobilized cultures of ligninolytic fungi. Immobilization was accomplished by 7-day colonization of polyamide mesh with mycelial fragments. Irpex lacteus decolorized >90% of the initial concentration of 150mgl-1 of anthraquinone Remazol Brilliant Blue R dye in three subsequent decolorization cycles and the degradation capacity was not negatively affected by the presence of 106Saccharomyces cerevisiae cells per ml in the mixed culture. The yeast was not able to degrade the dye. I. lacteus biofilm was also resistant to bacterial infection with E. coli. Inoculation of the yeast to pre-formed I. lacteus biofilm culture resulted in a reduction of fungal biomass by 27%. Levels of LiP, MnP and laccase of I. lacteus were not much influenced by S. cerevisiae or E. coli. Similar resilience of P. ostreatus biofilms was observed after exposure to yeast Issatchenkia occidentalis when the fungal degradation capacity measured with Reactive Orange 16 azo dye was maintained over two decolorization cycles. I. occidentalis did not degrade the dye under the conditions used. Formation of densely packed fungal biofilms with abundant extracellular polysaccharide was not impeded by the yeast. Increase of MnP and laccase levels attributable to the presence of I. occidentalis was observed.
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Affiliation(s)
- Pavlína Šlosarčíková
- Department of Biology and Ecology, Faculty of Science, University of Ostrava, Chittussiho 10, 710 00 Ostrava, Czech Republic.
| | - Čeněk Novotný
- Institute of Microbiology, Czech Academy of Sciences, Vídeňská 1083, 142 20 Prague 4, Czech Republic.
| | - Kateřina Malachová
- Department of Biology and Ecology, Faculty of Science, University of Ostrava, Chittussiho 10, 710 00 Ostrava, Czech Republic.
| | - Hana Válková
- Department of Biology and Ecology, Faculty of Science, University of Ostrava, Chittussiho 10, 710 00 Ostrava, Czech Republic.
| | - Jindřich Fojtík
- Department of Biology and Ecology, Faculty of Science, University of Ostrava, Chittussiho 10, 710 00 Ostrava, Czech Republic.
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69
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Song L, Shao Y, Ning S, Tan L. Performance of a newly isolated salt-tolerant yeast strain Pichia occidentalis G1 for degrading and detoxifying azo dyes. BIORESOURCE TECHNOLOGY 2017; 233:21-29. [PMID: 28258992 DOI: 10.1016/j.biortech.2017.02.065] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Revised: 02/13/2017] [Accepted: 02/15/2017] [Indexed: 05/07/2023]
Abstract
A salt-tolerant yeast named G1 which could decolorize various azo dyes was recently isolated and identified as Pichia occidentalis. Systematic researches on characterization, degradation pathway, detoxification effects and enzymes analysis of this yeast were done. The results showed that the optimal metabolism and growth parameters for strain G1 were: 2.0gL-1 glucose, 0.6gL-1 ammonium sulfate, 0.08gL-1 yeast extract, 30gL-1 NaCl, 160rmin-1, 30°C and pH 5.0. More than 98% of 50mgL-1 Acid Red B (ARB) could be decolorized within 16h under the optimal conditions. Additionally, strain G1 degraded and obviously detoxified ARB through a possible pathway successively consisting of decolorization, deamination/desulfonation and TCA cycle processes. Moreover, NADH-DCIP reductase was estimated as the key reductase for decolorization and ligninases including lignin peroxidase, manganese peroxidase and laccase were important oxidoreductases for further degradation of decolorization intermediates.
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Affiliation(s)
- Li Song
- School of Life Science, Liaoning Normal University, Dalian 116081, China
| | - Yifan Shao
- School of Life Science, Liaoning Normal University, Dalian 116081, China
| | - Shuxiang Ning
- School of Life Science, Liaoning Normal University, Dalian 116081, China
| | - Liang Tan
- School of Life Science, Liaoning Normal University, Dalian 116081, China.
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70
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Ahmadi M, Jorfi S, Kujlu R, Ghafari S, Darvishi Cheshmeh Soltani R, Jaafarzadeh Haghighifard N. A novel salt-tolerant bacterial consortium for biodegradation of saline and recalcitrant petrochemical wastewater. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2017; 191:198-208. [PMID: 28104552 DOI: 10.1016/j.jenvman.2017.01.010] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2016] [Revised: 01/02/2017] [Accepted: 01/05/2017] [Indexed: 06/06/2023]
Abstract
Treatment of a saline petrochemical wastewater with BOD5/COD ratio of less than 0.1 was investigated using a consortium consisted of three isolated salt-tolerant bacteria namely, Kocuria turfanesis, Halomonas alkaliphila and Pseudomonas balearica. Selected bacteria were isolated from petrochemical wastewater containing mineral salt mediums of 3% salinity. A lab-scale activated sludge bioreactor was used for startup in batch mode operation and after obtaining the MLSS concentration of about 3000 mg/L, the operation was changed to continuous flow mode to determine the biokinetic coefficients under different organic loading rates of 0.33-1.21 kg CODm-3 d-1. The COD removal efficiency of 78.7%-61.5% was observed for treatment of real saline wastewater with a decreasing trend along with increasing the organic loading rate. In addition, results of kinetic investigation demonstrated that the yield(Y), endogenous decay coefficient (kd), maximum reaction rate (Kmax), maximum specific growth rate (μmax) and saturation constant (Ks) were 0.54 mg VSS mg COD-1, 0.014 day-1, 1.23 day-1, 0.66 day-1, and 1315 mg L-1, respectively.
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Affiliation(s)
- Mehdi Ahmadi
- Environmental Technologies Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran; Department of Environmental Health Engineering, School of Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
| | - Sahand Jorfi
- Environmental Technologies Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran; Department of Environmental Health Engineering, School of Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
| | - Raheleh Kujlu
- School of Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
| | - Shokouh Ghafari
- Health Research Institute, Infectious and Tropical Disease Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran; Virology Department, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
| | | | - Nematollah Jaafarzadeh Haghighifard
- Environmental Technologies Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran; Department of Environmental Health Engineering, School of Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
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Performance of the biological aerated filter bioaugmented by a yeast Magnusiomyces ingens LH-F1 for treatment of Acid Red B and microbial community dynamics. World J Microbiol Biotechnol 2017; 33:39. [DOI: 10.1007/s11274-017-2210-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2016] [Accepted: 01/11/2017] [Indexed: 10/20/2022]
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73
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Pizarro AH, Molina CB, Rodriguez JJ. Decoloration of azo and triarylmethane dyes in the aqueous phase by catalytic hydrotreatment with Pd supported on pillared clays. RSC Adv 2016. [DOI: 10.1039/c6ra24542k] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Catalytic hydrotreatment of synthetic dyes as azo compounds and triarylmethanes has been carried out under ambient-like conditions (25–50 °C, 1 atm) with H2using Pd supported on Al-pillared clays and Al2O3as catalysts.
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Affiliation(s)
- A. H. Pizarro
- Chemical Engineering Area
- Faculty of Sciences
- Universidad Autónoma de Madrid
- Madrid
- Spain
| | - C. B. Molina
- Chemical Engineering Area
- Faculty of Sciences
- Universidad Autónoma de Madrid
- Madrid
- Spain
| | - J. J. Rodriguez
- Chemical Engineering Area
- Faculty of Sciences
- Universidad Autónoma de Madrid
- Madrid
- Spain
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