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Yadav M, Singh N, Annu, Khan SA, Raorane CJ, Shin DK. Recent Advances in Utilizing Lignocellulosic Biomass Materials as Adsorbents for Textile Dye Removal: A Comprehensive Review. Polymers (Basel) 2024; 16:2417. [PMID: 39274050 DOI: 10.3390/polym16172417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2024] [Revised: 08/19/2024] [Accepted: 08/25/2024] [Indexed: 09/16/2024] Open
Abstract
This review embarks on a comprehensive journey, exploring the application of lignocellulosic biomass materials as highly effective adsorbents for the removal of textile dyes (cationic and anionic dyes) from wastewater. A literature review and analysis were conducted to identify existing gaps in previous research on the use of lignocellulosic biomass for dye removal. This study investigates the factors and challenges associated with dye removal methods and signifies their uses. The study delves into the pivotal role of several parameters influencing adsorption, such as contact time, pH, concentration, and temperature. It then critically examines the adsorption isotherms, unveiling the equilibrium relationship between adsorbent and dye and shedding light on the mechanisms of their interaction. The adsorption process kinetics are thoroughly investigated, and a detailed examination of the adsorbed rate of dye molecules onto lignocellulosic biomass materials is carried out. This includes a lively discussion of the pseudo-first, pseudo-second, and intra-particle diffusion models. The thermodynamic aspects of the adsorption process are also addressed, elucidating the feasibility and spontaneity of the removal process under various temperature conditions. The paper then dives into desorption studies, providing insights into the regeneration potential of lignocellulosic biomass materials for sustainable reusability. The environmental impact and cost-effectiveness of employing lignocellulosic biomass materials in textiles including Congo Red, Reactive Black 5, Direct Yellow 12, Crystal Violet, Malachite Green, Acid Yellow 99, and others dyes from wastewater treatment are discussed, emphasizing the significance of eco-friendly solutions. In summary, this review brings together a wealth of diverse studies and findings to present a comprehensive overview of lignocellulosic biomass materials as adsorbents for textile cationic and anionic dye removal, encompassing various aspects from influential parameters to kinetics, adsorption isotherms, desorption, and thermodynamics studies. Its scope and other considerations are also discussed along with its benefits. The collective knowledge synthesized in this paper is intended to contribute to the advancement of sustainable and efficient water treatment technologies in the textile industry.
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Affiliation(s)
- Manisha Yadav
- Department of Textile and Fibre Engineering, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Nagender Singh
- Department of Fashion and Apparel Engineering, The Technological Institute of Textile and Sciences, Bhiwani 127021, India
| | - Annu
- Materials Laboratory, School of Mechanical Engineering, Yeungnam University, 280-Daehak-ro, Gyeongsan 38541, Republic of Korea
| | - Suhail Ayoub Khan
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225009, China
- IAMFE, School of Chemistry and Materials Science, Nanjing University of Information Science and Technology, Nanjing 210044, China
| | | | - Dong Kil Shin
- Materials Laboratory, School of Mechanical Engineering, Yeungnam University, 280-Daehak-ro, Gyeongsan 38541, Republic of Korea
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2
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Rahimihaghighi M, Gigli M, Ficca VCA, Placidi E, Sgarzi M, Crestini C. Lignin-Derived Sustainable Nano-Platforms: A Multifunctional Solution for an Efficient Dye Removal. CHEMSUSCHEM 2024:e202400841. [PMID: 38899482 DOI: 10.1002/cssc.202400841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2024] [Revised: 06/17/2024] [Accepted: 06/20/2024] [Indexed: 06/21/2024]
Abstract
In contrast to conventional non-biobased adsorbents, lignin emerges as a cost-effective and environmentally benign alternative for water treatment. This study identifies unexpected and unpredicted multifunctional properties of lignin nanoparticles (LNPs). LNPs, which are prepared by simple physical processes, demonstrated for the first time to behave as multifunctional materials able to adsorb and photodegrade methylene blue (MB) in aqueous medium upon UV irradiation. Furthermore, the synthetic approach adopted to synthesize LNPs - and therefore their surface properties - strongly affects their performances. More specifically, LNPs obtained by solvent-antisolvent nanoprecipitation (SLNPs) show the highest MB adsorption properties (98 % removal), reaching a maximum adsorption capacity of 43.0 mg g-1, and the fastest adsorption kinetics with respect to other lignin-based adsorbents. Conversely, hydrotropic LNPs (HLNPs) exhibit exceptional photocatalytic activity, resulting in 98 % MB degradation over 6 hours of UV irradiation, combined with the ability to be easily recycled and reused. The present effort paves the way for the use of LNPs as efficient multifunctional materials able to perform concurrently adsorption and photocatalytic degradation of dye pollutants, toward the creation of a sustainable biobased water treatment platform.
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Affiliation(s)
- Maryam Rahimihaghighi
- Department of Molecular Sciences and Nanosystems, Università Ca' Foscari Venezia, Via Torino 155, 30172, Venice Mestre, Italy
- Department of Architecture and Industrial Design, Università degli Studi della Campania "Luigi Vanvitelli", Via San Lorenzo, Abbazia di San Lorenzo, 81031, Aversa, Italy
| | - Matteo Gigli
- Department of Molecular Sciences and Nanosystems, Università Ca' Foscari Venezia, Via Torino 155, 30172, Venice Mestre, Italy
| | - Valerio C A Ficca
- Department of Chemistry, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185, Rome, Italy
- Department of Physics, Sapienza University of Rome, Piazzale Aldo Moro 2, 00185, Rome, Italy
| | - Ernesto Placidi
- Department of Physics, Sapienza University of Rome, Piazzale Aldo Moro 2, 00185, Rome, Italy
| | - Massimo Sgarzi
- Department of Molecular Sciences and Nanosystems, Università Ca' Foscari Venezia, Via Torino 155, 30172, Venice Mestre, Italy
| | - Claudia Crestini
- Department of Molecular Sciences and Nanosystems, Università Ca' Foscari Venezia, Via Torino 155, 30172, Venice Mestre, Italy
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Yeruva DK, S VM. Electrogenic engineered flow through tri-phasic wetland system for azo dye treatment: Microbial dynamics and functional metagenomics. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 334:122107. [PMID: 37369299 DOI: 10.1016/j.envpol.2023.122107] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2023] [Revised: 06/12/2023] [Accepted: 06/24/2023] [Indexed: 06/29/2023]
Abstract
Electrogenic engineered flow through tri-phasic wetland (EEFW) system based on nature-based ecological principles was studied by integrating successive biological microenvironments. The potential mechanism of the plant root-based microbial community and its functional diversity with the influence of plant-microbe-electrode synergism towards dye degradation was evaluated. The EEFW system was operated at three varied dye loads of 10, 25 and 50 mg L-1, where the results from the cumulative outlets revealed a maximum dye removal efficiency of 96%, 96.5% and 93%, respectively. Microbial community analysis depicted synergistic dependence on the plant-microbe-electrode interactions, influencing their functional diversity and metabolism towards detoxification of pollutants. The core microbial taxa enriched against the microenvironment variation were mostly associated with carbon and dye removal viz., Desulfomonile tiedjei and Rhodopseudomonas palustris in Tank 1 and Chloroflexi bacterium and Steroidobacter denitrificans in Tank 2. The degradation of polycyclic aromatic hydrocarbons, chloroalkane/chloroalkene, nitrotoluene, bisphenol, caprolactam and 1,1,1-trichloro-2,2-bis(4-chlorophenyl) ethane (DDT) were observed to be predominant in Tank 1. EEFW system could be one of the option for utilizing nature-based processes for the treatment of wastewater by self-induced bioelectrogenesis to augment process efficiency.
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Affiliation(s)
- Dileep Kumar Yeruva
- Bioengineering and Environmental Science Lab, Department of Energy and Environmental Engineering, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad, 500 007, India; Academy of Scientific & Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Venkata Mohan S
- Bioengineering and Environmental Science Lab, Department of Energy and Environmental Engineering, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad, 500 007, India; Academy of Scientific & Innovative Research (AcSIR), Ghaziabad, 201002, India.
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4
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Devi S, Aarushi, Tyagi S. Porous zinc-discs as nanocatalysts for methylene blue dye treatment in water: sensing, adsorption and photocatalytic degradation. RSC Adv 2022; 12:34951-34961. [PMID: 36540260 PMCID: PMC9728022 DOI: 10.1039/d2ra05245h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2022] [Accepted: 11/07/2022] [Indexed: 09/19/2023] Open
Abstract
This paper reports a zinc derived (ZD) porous nanosystem that has been used for selective sensing, adsorption, and photocatalytic degradation of the known hazardous dye, Methylene blue (MB). Using zinc nitrate and 2-aminoterphthalic acid as precursors, the synthesis has been optimized to yield disc-shaped nanoparticles. This luminescent ZD nanoparticles exhibit absorption and emission wavelengths of 328 nm and 427 nm, respectively at an excitation wavelength of 330 nm. In the presence of MB, there is a sharp decrease in the photoluminescence emission intensity of ZD nanoparticles. The detection limit, quenching constant and the binding constant of ZD nanoparticles with MB are found to be 0.31 × 10-9 M, 3.30 × 106 M-1 and 2.27 × 106 M-1 respectively. The impact of contact time, initial MB concentration, and pH on the adsorption process were investigated. The equilibrium data fit well with the Langmuir adsorption isotherm model (R 2 = 0.989) and superlatively fitted to the pseudo-second-order rate model (rate constant: 0.00011 g mg-1 min-1; adsorption capacity (q e, calc.): 386.1 mg g-1; R 2: 0.990). Further, the MB dye degradation was performed under ultra-violet irradiation and ∼95% MB degradation was achieved within 70 min. The experimental data are well fitted to the pseudo-first order kinetics (R 2: 0.99; rate constant: 0.015 min-1). These disc shaped ZD nanoparticles can not only facilitate the detection, but also the adsorption and photocatalytic degradation of MB, which can be further processed for environmental remediation applications.
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Affiliation(s)
- Sarita Devi
- CSIR-Central Scientific Instruments Organization, Analytical Techniques Division Chandigarh 160030 India +91-172-2657267 +91-172-2642545
| | - Aarushi
- CSIR-Central Scientific Instruments Organization, Analytical Techniques Division Chandigarh 160030 India +91-172-2657267 +91-172-2642545
- Acadamy of Scientific and Innovative Research Chennai India
| | - Sachin Tyagi
- CSIR-Central Scientific Instruments Organization, Analytical Techniques Division Chandigarh 160030 India +91-172-2657267 +91-172-2642545
- Acadamy of Scientific and Innovative Research Chennai India
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Cong J, Xie X, Liu Y, Qin Y, Fan J, Fang Y, Liu N, Zhang Q, Song X, Sand W. Biochemical characterization of a novel azo reductase named BVU5 from the bacterial flora DDMZ1: application for decolorization of azo dyes. RSC Adv 2022; 12:1968-1981. [PMID: 35425265 PMCID: PMC8979046 DOI: 10.1039/d1ra08090c] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Accepted: 12/09/2021] [Indexed: 12/07/2022] Open
Abstract
One of the main mechanisms of bacterial decolorization and degradation of azo dyes is the use of biological enzymes to catalyze the breaking of azo bonds. This paper shows the expression and properties of a novel azo reductase (hybrid-cluster NAD(P)-dependent oxidoreductase, accession no. A0A1S1BVU5, named BVU5) from the bacterial flora DDMZ1 for degradation of azo dyes. The molecular weight of BVU5 is about 40.1 kDa, and it contains the prosthetic group flavin mononucleotide (FMN). It has the decolorization ability of 80.1 ± 2.5% within 3 min for a dye concentration of 20 mg L−1, and 53.5 ± 1.8% even for a dye concentration of 200 mg L−1 after 30 min. The optimum temperature of enzyme BVU5 is 30 °C and the optimum pH is 6. It is insensitive to salt concentration up to a salinity level of 10%. Furthermore, enzyme BVU5 has good tolerance toward some metal ions (2 mM) such as Mn2+, Ca2+, Mg2+ and Cu2+ and some organic solvents (20%) such as DMSO, methanol, isopentyl, ethylene glycol and N-hexane. However, the enzyme BVU5 has a low tolerance to high concentrations of denaturants. In particular, it is sensitive to the denaturants guanidine hydrochloride (GdmCl) (2 M) and urea (2 M). Analysis of the dye substrate specificity shows that enzyme BVU5 decolorizes most azo dyes, which is indicating that the enzyme is not strictly substrate specific, it is a functional enzyme for breaking the azo structure. Liquid chromatography/time-of-flight/mass spectrometry (LC-TOF-MS) revealed after the action of enzyme BVU5 that some intermediate products with relatively large molecular weights were produced; this illustrates a symmetric or an asymmetric rapid cleavage of the azo bonds by this enzyme. The potential degradation pathways and the enzyme-catalyzed degradation mechanism are deduced in the end of this paper. The results give insight into the potential of a rapid bio-pretreatment by enzyme BVU5 for processing azo dye wastewater. The combination of BVU5 enzyme and coenzyme NADH can quickly degrade the azo dye RB5.![]()
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Affiliation(s)
- Junhao Cong
- College of Environmental Science and Engineering, State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Key Laboratory of Pollution Control and Emission Reduction Technology for Textile Industry, Donghua University Shanghai 201620 China
| | - Xuehui Xie
- College of Environmental Science and Engineering, State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Key Laboratory of Pollution Control and Emission Reduction Technology for Textile Industry, Donghua University Shanghai 201620 China.,Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092 P. R. China
| | - Yanbiao Liu
- College of Environmental Science and Engineering, State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Key Laboratory of Pollution Control and Emission Reduction Technology for Textile Industry, Donghua University Shanghai 201620 China
| | - Yan Qin
- College of Environmental Science and Engineering, State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Key Laboratory of Pollution Control and Emission Reduction Technology for Textile Industry, Donghua University Shanghai 201620 China
| | - Jiao Fan
- College of Environmental Science and Engineering, State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Key Laboratory of Pollution Control and Emission Reduction Technology for Textile Industry, Donghua University Shanghai 201620 China
| | - Yingrong Fang
- College of Environmental Science and Engineering, State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Key Laboratory of Pollution Control and Emission Reduction Technology for Textile Industry, Donghua University Shanghai 201620 China
| | - Na Liu
- School of Environment and Surveying Engineering, Suzhou University Suzhou Anhui 234000 China
| | - Qingyun Zhang
- School of Chemical and Environmental Engineering, Anhui Polytechnic University Wuhu Anhui 241000 China
| | - Xinshan Song
- College of Environmental Science and Engineering, State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Key Laboratory of Pollution Control and Emission Reduction Technology for Textile Industry, Donghua University Shanghai 201620 China.,Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092 P. R. China
| | - Wolfgang Sand
- College of Environmental Science and Engineering, State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Key Laboratory of Pollution Control and Emission Reduction Technology for Textile Industry, Donghua University Shanghai 201620 China.,Institute of Biosciences, Freiberg University of Mining and Technology Freiberg 09599 Germany
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6
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Zhang K, Zhang D, Li X, Xue Y. Biomineralization of lead in wastewater: Bacterial reutilization and metal recovery. JOURNAL OF HAZARDOUS MATERIALS 2022; 421:126765. [PMID: 34364208 DOI: 10.1016/j.jhazmat.2021.126765] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 07/08/2021] [Accepted: 07/26/2021] [Indexed: 06/13/2023]
Abstract
Biomineralization has not been widely applied due to the lack of bacterial reusability, which needs to be investigated urgently. In this study, we found Lysinibacillus could immobilize Pb2+ at initial pH ≥ 2.0. Lead ion recovery and cell reutilization could be achieved efficiently at pH = 1.0 (c(HNO3) = 0.1 mol/L). Besides, the strong chelating agent EDTA-2Na (c(EDTA-2Na)= 0.1 mol/L) was used for comparison. The oxidative damaging effect of cells could be reduced by both eluents. Mechanism analysis was conducted through zeta potential measurement, 3D-EEM, cyclic voltammetry, FE-EPMA, XRD, FTIR, and XPS. After the cells were eluted by HNO3, the enzyme activity enhanced and the removal efficiency increased continuously. Cells were used to remove Pb2+ repeatedly, and regular-shaped Pb3(PO4)2 crystals were always formed. After the cells were eluted by EDTA-2Na, cells were more prone to redox reaction and were induced to produce mercaptan (R-SH). The active hydrogen in R-SH could react with peroxide free radicals. New free radicals were formed after the R-SH was stripped of hydrogen, and finally, PbS stable mineral was formed. This research provides a new strategy to realize bacterial reutilization, which is a breakthrough in the field of biomineralization.
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Affiliation(s)
- Kejing Zhang
- School of Civil Engineering, Wuhan University, Wuhan, China
| | - Dawei Zhang
- School of Civil Engineering, Wuhan University, Wuhan, China
| | - Xiao Li
- School of Civil Engineering, Wuhan University, Wuhan, China
| | - Yingwen Xue
- School of Civil Engineering, Wuhan University, Wuhan, China.
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7
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Zhang K, Zhang D, Wu X, Xue Y. Continuous and efficient immobilization of heavy metals by phosphate-mineralized bacterial consortium. JOURNAL OF HAZARDOUS MATERIALS 2021; 416:125800. [PMID: 33836328 DOI: 10.1016/j.jhazmat.2021.125800] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Revised: 03/11/2021] [Accepted: 03/26/2021] [Indexed: 06/12/2023]
Abstract
Traditional sewage treatment technology cannot remove heavy metals, which needs to be improved urgently. Lysinibacillus with the function of bio-mineralization was screened and loaded on granular sludge to form a phosphate-mineralized bacterial consortium, which demonstrated the ability of self-regulating pH and automatic solid-liquid separation. Heavy metals could be fixed on the bacterial consortium to produce stable and harmless phosphate minerals. The highest removal efficiency of Pb(Ⅱ), Cd(Ⅱ), and Ni(Ⅱ) were 97.9%, 70%, and 40%, respectively. Organic matter and other metal ions in actual polluted water had little effect on the Pb(Ⅱ) removal efficiency. Mechanism analysis was conducted through 3D-EEM, XRD, SEM-EDS, XPS, FTIR, and high-throughput sequencing analyses. The bacterial consortium was a multi-species coexistence system, but Lysinibacillus played a major role in removing Pb(Ⅱ). C-O and O-H bonds of tyrosine and phosphorous organics were broken by enzyme catalysis and the metal-oxygen bond (Pb-O) was formed. Mineral crystals in the reactor accumulated, transforming from the initial phase non-crystalline structure to the metaphase Pb3(PO4)2 and eventually to the Pb5(PO4)3OH. This research obtained a promising technique for immobilizing Pb(Ⅱ) or other hazardous metals continuously and efficiently.
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Affiliation(s)
- Kejing Zhang
- School of Civil Engineering, Wuhan University, Wuhan, China
| | - Dawei Zhang
- School of Civil Engineering, Wuhan University, Wuhan, China
| | - Xuejiao Wu
- School of Civil Engineering, Wuhan University, Wuhan, China
| | - Yingwen Xue
- School of Civil Engineering, Wuhan University, Wuhan, China.
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8
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Bayomie OS, Kandeel H, Shoeib T, Yang H, Youssef N, El-Sayed MMH. Novel approach for effective removal of methylene blue dye from water using fava bean peel waste. Sci Rep 2020; 10:7824. [PMID: 32385345 PMCID: PMC7210991 DOI: 10.1038/s41598-020-64727-5] [Citation(s) in RCA: 78] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Accepted: 04/16/2020] [Indexed: 11/09/2022] Open
Abstract
Fava bean peels, Vicia faba (FBP) are investigated as biosorbents for the removal of Methylene Blue (MB) dye from aqueous solutions through a novel and efficient sorption process utilizing ultrasonic-assisted (US) shaking. Ultrasonication remarkably enhanced sorption rate relative to conventional (CV) shaking, while maintaining the same sorption capacity. Ultrasonic sorption rate amounted to four times higher than its conventional counterpart at 3.6 mg/L initial dye concentration, 5 g/L adsorbent dose, and pH 5.8. Under the same adsorbent dose and pH conditions, percent removal ranged between 70-80% at the low dye concentration range (3.6-25 mg/L) and reached about 90% at 50 mg/L of the initial dye concentration. According to the Langmuir model, maximum sorption capacity was estimated to be 140 mg/g. A multiple linear regression statistical model revealed that adsorption was significantly affected by initial concentration, adsorbent dose and time. FBP could be successfully utilized as a low-cost biosorbent for the removal of MB from wastewater via US biosorption as an alternative to CV sorption. US biosorption yields the same sorption capacities as CV biosorption, but with significant reduction in operational times.
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Affiliation(s)
- Omar S Bayomie
- Department of Chemistry, American University in Cairo, AUC Avenue, P.O. Box 74, New Cairo, 11835, Egypt.,Department of Energy and Processes, PSL Research University, Paris, France
| | - Haitham Kandeel
- Department of Chemistry, American University in Cairo, AUC Avenue, P.O. Box 74, New Cairo, 11835, Egypt.,Department of Chemistry and Chemical Engineering, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Tamer Shoeib
- Department of Chemistry, American University in Cairo, AUC Avenue, P.O. Box 74, New Cairo, 11835, Egypt
| | - Hu Yang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, P. R. China
| | - Noha Youssef
- Department of Mathematics and Actuarial Science, American University in Cairo, AUC Avenue, P.O. Box 74, New Cairo, 11835, Egypt
| | - Mayyada M H El-Sayed
- Department of Chemistry, American University in Cairo, AUC Avenue, P.O. Box 74, New Cairo, 11835, Egypt.
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Zhou Q, Chen W, Jiang X, Liu H, Ma S, Wang B. Preparation of a novel nitrogen-containing graphitic mesoporous carbon for the removal of acid red 88. Sci Rep 2020; 10:1353. [PMID: 31992724 PMCID: PMC6987219 DOI: 10.1038/s41598-020-57823-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Accepted: 12/19/2019] [Indexed: 11/10/2022] Open
Abstract
A novel nitrogen-containing graphitic mesoporous carbon was prepared through MnO-templated method using polyacrylonitrile (PAN) as both carbon and nitrogen sources, and MnCO3 as both template and catalyst precursors. The effects of preparation conditions on the physicochemical properties of obtained samples were systematically investigated. The results showed that as the decrease of the weight ratios of PAN and MnO (2:1-1:4), the increase of carbonization temperature (700-900 °C) and pre-oxidation temperature (180-200 °C), the samples had higher specific surface area, mesopores volume and ratios, up to 507 m2/g, 0.824 cm3/g and 96.83%, respectively. Moreover, the prepared samples presented relatively high graphitic degree and nitrogen contents (~2.21%). The adsorption capacity for acid red 88 (AR88) was as high as 309 mg/g, which were dramatically affected by the mesoporous properties and C- and N-containing groups on the surface of prepared carbon. The rich graphic carbon and pyridine-N in mesoporous carbon generated π-π dispersion and electrostatic interaction with AR88, respectively, which jointly were responsible for the adsorption process. The results of the isotherm and kinetic studies indicated that the AR88 adsorption on mesoporous carbon could be well depicted using Langmuir model and pseudo-2nd-order model.
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Affiliation(s)
- Qiying Zhou
- College of Architecture and Environment, Sichuan University, Chengdu, 610065, China.,National Engineering Research Centre for Flue Gas Desulfurization, Chengdu, 610065, China
| | - Wenhua Chen
- College of Architecture and Environment, Sichuan University, Chengdu, 610065, China.,National Engineering Research Centre for Flue Gas Desulfurization, Chengdu, 610065, China
| | - Xia Jiang
- College of Architecture and Environment, Sichuan University, Chengdu, 610065, China. .,National Engineering Research Centre for Flue Gas Desulfurization, Chengdu, 610065, China.
| | - Hongying Liu
- College of Architecture and Environment, Sichuan University, Chengdu, 610065, China.,National Engineering Research Centre for Flue Gas Desulfurization, Chengdu, 610065, China
| | - Shenggui Ma
- College of Architecture and Environment, Sichuan University, Chengdu, 610065, China.,National Engineering Research Centre for Flue Gas Desulfurization, Chengdu, 610065, China
| | - Bangda Wang
- College of Architecture and Environment, Sichuan University, Chengdu, 610065, China.,National Engineering Research Centre for Flue Gas Desulfurization, Chengdu, 610065, China
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10
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Rathour R, Jain K, Madamwar D, Desai C. Microaerophilic biodegradation of raw textile effluent by synergistic activity of bacterial community DR4. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2019; 250:109549. [PMID: 31545178 DOI: 10.1016/j.jenvman.2019.109549] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Revised: 08/31/2019] [Accepted: 09/06/2019] [Indexed: 06/10/2023]
Abstract
Treatment of raw textile effluent (RTE) is very difficult, due to its inherent heterogeneous, low-biodegradable and toxic compositions. Pure and mixed microbial cultures have limited metabolic capabilities in effective mineralization of complex RTE. Therefore, in this study a novel bacterial community DR4 was enriched directly into a complex RTE consisting of 27 different dyes using textile dye polluted soil as an inoculum. The rigorous enrichment process resulted in acclimatization of a taxonomically distinct bacterial population, with an abundance of the genus Comamonas in the bacterial community DR4 as compared to the abundance of Pseudomonas in the RTE respectively, as revealed by high-throughput 16S rRNA gene (V3-V4 region) sequencing. Microaerophilic treatment of RTE by enriched bacterial community DR4, in the presence of optimized electron donor (sucrose) and nitrogen source (yeast extract) resulted in 88% of American Dye Manufacturer's Institute (ADMI) removal and 98% of Chemical oxygen demand (COD) reduction within 32 h at 37 °C. In silico prediction of the functional genes within bacterial community DR4 was made by Phylogenetic Investigation of Communities by Reconstruction of Unobserved States (PICRUSt) analysis. The PICRUSt analysis revealed high abundance of xenobiotic degradation and metabolism genes. The predicted functional genes and textile dye degradation pathways were further validated using Ultraviolet-visible spectroscopy (UV-Vis), Fourier transform infrared (FTIR) spectroscopy and High Resolution Liquid Chromatography coupled with Mass Spectrometry (HR-LCMS) based characterization of textile dye degradation metabolites. The activity of azoreductases in the cell-free extracts (CFE) of the enriched bacterial community DR4 was induced by 1.83-7.81 folds in the presence of representative textile dyes as compared to uninduced samples, which confirmed their role in textile effluent decolourization. The degradation of four representative azo dyes present in RTE such as Disperse orange 30, Reactive red 152, Direct blue 2 and Acid brown 15 depicted symmetric degradation of azo bonds by bacterial community DR4.
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Affiliation(s)
- Rohit Rathour
- P. D. Patel Institute of Applied Sciences, Charotar University of Science and Technology (CHARUSAT), CHARUSAT Campus, Changa, 388 421, Gujarat, India.
| | - Kunal Jain
- Environmental Genomics and Proteomics Lab, Post Graduate Department of Biosciences, UGC Center of Advanced Study, Sardar Patel University, Satellite Campus, Vadtal Road, Bakrol, 388 315, Anand, Gujarat, India
| | - Datta Madamwar
- Environmental Genomics and Proteomics Lab, Post Graduate Department of Biosciences, UGC Center of Advanced Study, Sardar Patel University, Satellite Campus, Vadtal Road, Bakrol, 388 315, Anand, Gujarat, India
| | - Chirayu Desai
- P. D. Patel Institute of Applied Sciences, Charotar University of Science and Technology (CHARUSAT), CHARUSAT Campus, Changa, 388 421, Gujarat, India.
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Menezes O, Brito R, Hallwass F, Florêncio L, Kato MT, Gavazza S. Coupling intermittent micro-aeration to anaerobic digestion improves tetra-azo dye Direct Black 22 treatment in sequencing batch reactors. Chem Eng Res Des 2019. [DOI: 10.1016/j.cherd.2019.04.020] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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12
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Yazdani EB, Mehrizad A. Sonochemical preparation and photocatalytic application of Ag-ZnS-MWCNTs composite for the degradation of Rhodamine B under visible light: Experimental design and kinetics modeling. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.01.154] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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13
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Reddy CN, Kumar AN, Mohan SV. Metabolic phasing of anoxic-PDBR for high rate treatment of azo dye wastewater. JOURNAL OF HAZARDOUS MATERIALS 2018; 343:49-58. [PMID: 28941837 DOI: 10.1016/j.jhazmat.2017.08.065] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Revised: 07/18/2017] [Accepted: 08/23/2017] [Indexed: 06/07/2023]
Abstract
The treatment of azo dye wastewater was studied in a periodic discontinuous batch reactor (PDBR) at high loading condition (1250mg/l) under anoxic microenvironments. PDBR performance was evaluated by varying the time period of aerobic microenvironment during the cycle operation [before multiphasing (BMP; Control), 0.014; after multiphasing (AMP): AMPI, 0.84; AMPII, 0.73; AMPIII, 0.65]. Induction of air in anoxic-PDBR facilitated the simultaneous oxidation and reduction conditions and thus resulted higher dye removal efficiency with AMPIII strategy (65%) followed by AMPII (59.4%) and AMPI (54.4%) than the corresponding control operation (BMP: 49.4%). Relatively higher azo reductase enzyme activity was documented with AMP than corresponding BMP operation correlating well with azo dye decolorization. UV- UV-Significant transformational changes of azo dye peaks (618nm) were documented before and after multiphase operations. Cyclic voltammogram profiles depicted increment in redox catalytic currents during AMPIII operation and also supports the involvement of reducing equivalents towards the dye removal. Derivatives of voltammograms illustrated the involvement of various redox mediators viz., cytochrome-C, quinones, Fumarate/Succinate, Fe(CN)63-/Fe(CN)64-, and flavoproteins. Flexibility in phasing the multiple microenvironments in single bioreactor (PDBR) provides new insights in embodying the required capabilities to treat the recalcitrant azo dye wastewater especially at higher dye load operations.
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Affiliation(s)
- C Nagendranatha Reddy
- Academy of Scientific and Innovative Research (AcSIR), CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad-500 007, India; Bioengineering and Environmental Science Lab, EEFF Department, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad-500 007, India
| | - A Naresh Kumar
- Academy of Scientific and Innovative Research (AcSIR), CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad-500 007, India; Bioengineering and Environmental Science Lab, EEFF Department, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad-500 007, India
| | - S Venkata Mohan
- Bioengineering and Environmental Science Lab, EEFF Department, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad-500 007, India.
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14
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Moeder M, Carranza-Diaz O, López-Angulo G, Vega-Aviña R, Chávez-Durán FA, Jomaa S, Winkler U, Schrader S, Reemtsma T, Delgado-Vargas F. Potential of vegetated ditches to manage organic pollutants derived from agricultural runoff and domestic sewage: A case study in Sinaloa (Mexico). THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 598:1106-1115. [PMID: 28482458 DOI: 10.1016/j.scitotenv.2017.04.149] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Revised: 04/16/2017] [Accepted: 04/19/2017] [Indexed: 06/07/2023]
Abstract
This case study presents the fate of selected organic, priority and emerging pollutants along a 3.6km sector of a vegetated, agricultural ditch situated in Sinaloa (Mexico). The ditch receives runoff of agriculture and domestic wastewater from an adjacent community. During 2013, the occurrence of 38 organic pollutants (pesticides, polycyclic aromatic hydrocarbons (PAHs), artificial sweeteners and pharmaceutical residues) was monitored monthly at five selected points in the ditch water. Additionally, sediment and Typha domingensis (cattail) plants were collected in March, June, and September 2013 and investigated concerning their ability to absorb and accumulate pollutants. The concentrations of the selected pollutants in the ditch water ranged from sub ngL-1 (metolachlor, atrazine) to μgL-1 (metalaxyl, acesulfame). The metabolites endosulfan sulfate and endosulfan lactone exceeded mostly the concentration of the precursor insecticide endosulfan. Sorption on sediments was of minor relevance for accumulation of pollutants in the ditch system. Concentrations in the sediments varied seasonally and ranged from 0.2 to 12,432μgkg-1 dry weight (d.w.). T. domingensis accumulated ten of the studied pollutants mainly in roots (5-1065μgkg-1 d.w.). Overall, the monitoring results of the ditch compartments indicated that downstream the concentrations of the target pollutants decreased. Under no-flow conditions in the hot season, the ditch revealed a noticeable potential to mitigate pollutants. Among the high microbial activity in the water and the subtropical climate conditions, the ditch vegetation contributed to natural attenuation of the selected pollutants.
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Affiliation(s)
- Monika Moeder
- UFZ-Helmholtz Center for Environmental Research, Department of Analytical Chemistry, Permoserstrasse 15, 04318 Leipzig, Germany.
| | - Otoniel Carranza-Diaz
- Marine Sciences Faculty, Autonomous University of Sinaloa, Paseo Claussen S/N, Col. Centro, CP 82000 Mazatlán, Sinaloa, Mexico
| | - Gabriela López-Angulo
- Facultad de Ciencias Químico Biológicas, Universidad Autónoma de Sinaloa, Ciudad Universitaria s/n, CP 80010 Culiacán, Sinaloa, Mexico
| | - Rito Vega-Aviña
- Facultad de Agronomía, UAS, Carretera Culiacán-El Dorado km 17.5, CP 80000 Culiacán, Sinaloa, Mexico
| | - Francisco Armando Chávez-Durán
- Comisión Nacional del Agua, Organismo de Cuenca Pacífico Norte, Dirección de Infraestructura Hidroagrícola, Ingeniería de Riego y Drenaje Distrito de Riego 010 Culiacán-Humaya, Mexico
| | - Seifeddine Jomaa
- UFZ-Helmholtz Center for Environmental Research, Department of Aquatic Ecosystem Analysis and Management, Brueckstrasse 3a, 39114 Magdeburg, Germany
| | - Ursula Winkler
- UFZ-Helmholtz Center for Environmental Research, Department of Analytical Chemistry, Permoserstrasse 15, 04318 Leipzig, Germany
| | - Steffi Schrader
- UFZ-Helmholtz Center for Environmental Research, Department of Analytical Chemistry, Permoserstrasse 15, 04318 Leipzig, Germany
| | - Thorsten Reemtsma
- UFZ-Helmholtz Center for Environmental Research, Department of Analytical Chemistry, Permoserstrasse 15, 04318 Leipzig, Germany
| | - Francisco Delgado-Vargas
- Facultad de Ciencias Químico Biológicas, Universidad Autónoma de Sinaloa, Ciudad Universitaria s/n, CP 80010 Culiacán, Sinaloa, Mexico
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15
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Effects of Electrical Stimulation on the Degradation of Azo Dye in Three-Dimensional Biofilm Electrode Reactors. WATER 2017. [DOI: 10.3390/w9050301] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Three-dimensional biofilm electrode reactors (3D-BERs) were constructed to degrade the azo dye Reactive Brilliant Red (RBR) X-3B. The 3D-BERs with different influent concentrations and external voltages were individually studied to investigate their influence on the removal of X-3B. Experimental results showed that 3D-BERs have good X-3B removal efficiency; even when the influent concentration was 800 mg/L, removal efficiency of 73.4% was still achieved. In addition, the X-3B removal efficiency stabilized shortly after the influent concentration increased. In 3D-BERs, the average X-3B removal efficiency increased from 52.8% to 85.4% when the external voltage rose from 0 to 2 V. We further identified the intermediate products via UV-Vis and gas chromatography-mass spectrometry (GC-MS) analyses, and discussed the potential mechanism of degradation. After the conjugate structure of X-3B was destroyed, all of the substances generated mainly consisted of lower-molecular-weight organics.
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16
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Zhang X, Wu Y, Xiao G, Tang Z, Wang M, Liu F, Zhu X. Simultaneous photocatalytic and microbial degradation of dye-containing wastewater by a novel g-C3N4-P25/photosynthetic bacteria composite. PLoS One 2017; 12:e0172747. [PMID: 28273118 PMCID: PMC5342213 DOI: 10.1371/journal.pone.0172747] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2016] [Accepted: 01/27/2017] [Indexed: 11/21/2022] Open
Abstract
Azo dyes are very resistant to light-induced fading and biodegradation. Existing advanced oxidative pre-treatment methods based on the generation of non-selective radicals cannot efficiently remove these dyes from wastewater streams, and post-treatment oxidative dye removal is problematic because it may leave many byproducts with unknown toxicity profiles in the outgoing water, or cause expensive complete mineralization. These problems could potentially be overcome by combining photocatalysis and biodegradation. A novel visible-light-responsive hybrid dye removal agent featuring both photocatalysts (g-C3N4-P25) and photosynthetic bacteria encapsulated in calcium alginate beads was prepared by self-assembly. This system achieved a removal efficiency of 94% for the dye reactive brilliant red X-3b and also reduced the COD of synthetic wastewater samples by 84.7%, successfully decolorized synthetic dye-contaminated wastewater and reduced its COD, demonstrating the advantages of combining photocatalysis and biocatalysis for wastewater purification. The composite apparently degrades X-3b by initially converting the dye into aniline and phenol derivatives whose aryl moieties are then attacked by free radicals to form alkyl derivatives, preventing the accumulation of aromatic hydrocarbons that might suppress microbial activity. These alkyl intermediates are finally degraded by the photosynthetic bacteria.
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Affiliation(s)
- Xinying Zhang
- College of Environment and Resources, Fuzhou University, Fuzhou, Fujian, PR China
- Research Institute of Photocatalysis, State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, China
- * E-mail: (XZ); (XZ)
| | - Yan Wu
- College of Environment and Resources, Fuzhou University, Fuzhou, Fujian, PR China
| | - Gao Xiao
- College of Environment and Resources, Fuzhou University, Fuzhou, Fujian, PR China
| | - Zhenping Tang
- College of Environment and Resources, Fuzhou University, Fuzhou, Fujian, PR China
| | - Meiyin Wang
- College of Environment and Resources, Fuzhou University, Fuzhou, Fujian, PR China
| | - Fuchang Liu
- College of Environment and Resources, Fuzhou University, Fuzhou, Fujian, PR China
| | - Xuefeng Zhu
- Section Sanitary Engineering, Department of Water Management, Faculty of Civil Engineering and GeoSciences, Delft University of Technology, Delft, Netherlands
- * E-mail: (XZ); (XZ)
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17
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Shabbir S, Faheem M, Ali N, Kerr PG, Wu Y. Periphyton biofilms: A novel and natural biological system for the effective removal of sulphonated azo dye methyl orange by synergistic mechanism. CHEMOSPHERE 2017; 167:236-246. [PMID: 27728882 DOI: 10.1016/j.chemosphere.2016.10.002] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2016] [Revised: 09/30/2016] [Accepted: 10/01/2016] [Indexed: 06/06/2023]
Abstract
Due to their large scale use, azo dyes are adversely affecting aquatic fauna and flora as well as humans. The persistent nature of sulphonated azo dyes makes them potential ecotoxic hazards. The aim of the present study was to employ a proficient, locally available biomaterial, viz. periphyton (i.e. epiphyton, epilithon or metaphyton), for removal of the azo dye, methyl orange (MO). Results showed that the periphytic biofilms are capable of completely removing comparatively high concentrations (up to 500 mg L-1) of MO from wastewater. The removal of MO occurs by a synergistic mechanism involving bioadsorption and biodegradation processes. The adsorption of MO by periphyton can be described by pseudo-second order kinetics. Elovich and intraparticle diffusion models as well as Langmuir equations fit well to the MO adsorption process. FTIR analysis of MO and its metabolites demonstrated biotransformation into simpler compounds within 72 h. GC-MS/MS analysis showed the conversion of MO into simpler compounds such as phenol, ethyl acetate and acetyl acetate. The results indicated that periphyton is a promising biomaterial for the complete removal of MO from wastewater and that the treatment process has the potential for in situ removal of MO at contaminated sites.
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Affiliation(s)
- Sadaf Shabbir
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Sciences, Chinese Academy of Sciences, 71 East Beijing Road, Nanjing, 210008, Jiangsu, People's Republic of China; Department of Microbiology, Quaid-i-Azam University, 3rd Avenue, 45320, Islamabad, Pakistan
| | - Muhammad Faheem
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Sciences, Chinese Academy of Sciences, 71 East Beijing Road, Nanjing, 210008, Jiangsu, People's Republic of China
| | - Naeem Ali
- Department of Microbiology, Quaid-i-Azam University, 3rd Avenue, 45320, Islamabad, Pakistan
| | - Philip G Kerr
- School of Biomedical Sciences, Charles Sturt University, Wagga Wagga, NSW, 2678, Australia
| | - Yonghong Wu
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Sciences, Chinese Academy of Sciences, 71 East Beijing Road, Nanjing, 210008, Jiangsu, People's Republic of China.
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18
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Shanthi Sravan J, Naresh Kumar A, Venkata Mohan S. Multi-pollutant treatment of crystalline cellulosic effluent: Function of dissolved oxygen on process control. BIORESOURCE TECHNOLOGY 2016; 217:245-251. [PMID: 27005787 DOI: 10.1016/j.biortech.2016.02.116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2015] [Revised: 02/23/2016] [Accepted: 02/25/2016] [Indexed: 06/05/2023]
Abstract
Treatment of crystalline cellulose based wastewater was carried out in periodic discontinuous batch reactor (PDBR). Specific influence of dissolved oxygen on treatment of crystalline cellulosic (CC) wastewater was evaluated in three different microenvironments such as aerobic, anoxic and anaerobic. PDBR-aerobic biosystem documented relatively higher substrate degradation [2.63kgCOD/m(3)-day (92%)] in comparison to PDBR-anoxic [2.12kgCOD/m(3)-day (71%)] and PDBR-anaerobic [1.81kgCOD/m(3)-day (63%)], which is in accordance with the observed DO levels. Similarly, multipollutants viz., phosphates and nitrates removal was observed to be higher in aerobic followed by anoxic and anaerobic operations. Higher nitrate removal in aerobic operation might be attributed to the efficient denitrification carried out by the biocatalyst, which utilizes both nitrates and oxygen as oxidizing agents. Multiscan spectral profiles depicted reduction in color intensity in all three microenvironments that correlated with the substrate degradation observed. Despite the high organic load, PDBR functioned well without exhibiting process inhibition.
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Affiliation(s)
- J Shanthi Sravan
- Bioengineering and Environmental Science (BEES), CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500 007, India
| | - A Naresh Kumar
- Bioengineering and Environmental Science (BEES), CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500 007, India
| | - S Venkata Mohan
- Bioengineering and Environmental Science (BEES), CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500 007, India.
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19
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Sreelatha S, Velvizhi G, Naresh Kumar A, Venkata Mohan S. Functional behavior of bio-electrochemical treatment system with increasing azo dye concentrations: Synergistic interactions of biocatalyst and electrode assembly. BIORESOURCE TECHNOLOGY 2016; 213:11-20. [PMID: 27067459 DOI: 10.1016/j.biortech.2016.03.087] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2015] [Revised: 03/15/2016] [Accepted: 03/16/2016] [Indexed: 06/05/2023]
Abstract
Treatment of dye bearing wastewater through biological machinery is particularly challenging due to its recalcitrant and inhibitory nature. In this study, functional behavior and treatment efficiency of bio-electrochemical treatment (BET) system was evaluated with increasing azo dye concentrations (100, 200, 300 and 500mg dye/l). Maximum dye removal was observed at 300mg dye/l (75%) followed by 200mg dye/l (65%), 100mg dye/l (62%) and 500mg dye/l (58%). Concurrent increment in dye load resulted in enhanced azo reductase and dehydrogenase activities respectively (300mg dye/l: 39.6U; 4.96μg/ml). Derivatives of cyclic voltammograms also supported the involvement of various membrane bound redox shuttlers, viz., cytochrome-c, cytochrome-bc1 and flavoproteins during the electron transfer. Bacterial respiration during BET operation utilized various electron acceptors such as electrodes and dye intermediates with simultaneous bioelectricity generation. This study illustrates the synergistic interaction of biocatalyst with electrode assembly for efficient treatment of azo dye wastewater.
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Affiliation(s)
- S Sreelatha
- Bioengineering and Environmental Sciences (BEES), CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500 007, India
| | - G Velvizhi
- Bioengineering and Environmental Sciences (BEES), CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500 007, India
| | - A Naresh Kumar
- Bioengineering and Environmental Sciences (BEES), CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500 007, India
| | - S Venkata Mohan
- Bioengineering and Environmental Sciences (BEES), CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500 007, India.
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20
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Dutta S, Ghosh A, Kabir H, Saha R. Facile one pot synthesis of zinc oxide nanorods and statistical evaluation for photocatalytic degradation of a diazo dye. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2016; 74:698-713. [PMID: 27508375 DOI: 10.2166/wst.2016.248] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
In the present work zinc oxide nanorods (ZNRs) have been synthesized to estimate its photocatalytic degradation potential on an industrially used diazo dye and optimization of the total treatment process has been designed. Response surface methodology (RSM) has been used to model the operational parameters for this photocatalytic degradation. The crystallite size (101 plane) of the synthesized ZNR has been found to be 20.99 nm having a band gap energy of 3.45 eV. At elevated pH, the rate of degradation of the photocatalyst was found to be higher than that of acidic pH. The independent variables of the model are time (9.6-122 min), pH (2-12.2), catalyst dose (0.2-0.4 g/L) and dye concentration (88-512 mg/L). It was seen that the degradation efficiency was significantly affected by the initial dye concentration and the pH, the optimal values of the parameters being a pH of 10.67, an initial concentration of 150 mg/L and ZnO dose of 0.37 g/L, the time taken being 88.52 min. The actual degradation efficiency of the dye reached 96.9% at optimized condition, which is quite close to the predicted value of 98.07%.
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Affiliation(s)
- Suvanka Dutta
- Department of Chemistry, National Institute of Technology Durgapur, Durgapur 713209, India E-mail:
| | - Ananya Ghosh
- Department of Chemistry, National Institute of Technology Durgapur, Durgapur 713209, India E-mail:
| | - Humayun Kabir
- Department of Earth and Environmental Science, National Institute of Technology Durgapur, Durgapur 713209, India
| | - Rajnarayan Saha
- Department of Chemistry, National Institute of Technology Durgapur, Durgapur 713209, India E-mail:
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21
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Sreelatha S, Velvizhi G, Reddy CN, Modestra JA, Mohan SV. Solid electron acceptor effect on biocatalyst activity in treating azo dye based wastewater. RSC Adv 2015. [DOI: 10.1039/c5ra15648c] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Schematic representation of (a) BET, (b) AnT and (c) abiotic-control operations along with the electron flux mechanism occurring in presence and absence of electrode assembly.
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Affiliation(s)
- S. Sreelatha
- Bioengineering and Environmental Sciences (BEES)
- CSIR-Indian Institute of Chemical Technology (CSIR-IICT)
- Hyderabad-500 007
- India
| | - G. Velvizhi
- Bioengineering and Environmental Sciences (BEES)
- CSIR-Indian Institute of Chemical Technology (CSIR-IICT)
- Hyderabad-500 007
- India
| | - C. Nagendranatha Reddy
- Bioengineering and Environmental Sciences (BEES)
- CSIR-Indian Institute of Chemical Technology (CSIR-IICT)
- Hyderabad-500 007
- India
| | - J. Annie Modestra
- Bioengineering and Environmental Sciences (BEES)
- CSIR-Indian Institute of Chemical Technology (CSIR-IICT)
- Hyderabad-500 007
- India
| | - S. Venkata Mohan
- Bioengineering and Environmental Sciences (BEES)
- CSIR-Indian Institute of Chemical Technology (CSIR-IICT)
- Hyderabad-500 007
- India
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