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Park Y, Noda I, Jung YM. Diverse Applications of Two-Dimensional Correlation Spectroscopy (2D-COS). APPLIED SPECTROSCOPY 2024:37028241256397. [PMID: 38835153 DOI: 10.1177/00037028241256397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2024]
Abstract
This second of the two-part series of a comprehensive survey review provides the diverse applications of two-dimensional correlation spectroscopy (2D-COS) covering different probes, perturbations, and systems in the last two years. Infrared spectroscopy has maintained its top popularity in 2D-COS over the past two years. Fluorescence spectroscopy is the second most frequently used analytical method, which has been heavily applied to the analysis of heavy metal binding, environmental, and solution systems. Various other analytical methods including laser-induced breakdown spectroscopy, dynamic mechanical analysis, differential scanning calorimetry, capillary electrophoresis, seismologic, and so on, have also been reported. In the last two years, concentration, composition, and pH are the main effects of perturbation used in the 2D-COS fields, as well as temperature. Environmental science is especially heavily studied using 2D-COS. This comprehensive survey review shows that 2D-COS undergoes continuous evolution and growth, marked by novel developments and successful applications across diverse scientific fields.
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Affiliation(s)
- Yeonju Park
- Department of Chemistry, Institute for Molecular Science and Fusion Technology, and Kangwon Radiation Convergence Research Support Center, Kangwon National University, Chuncheon, Korea
| | - Isao Noda
- Department of Materials Science and Engineering, University of Delaware, Newark, Delaware, USA
| | - Young Mee Jung
- Department of Chemistry, Institute for Molecular Science and Fusion Technology, and Kangwon Radiation Convergence Research Support Center, Kangwon National University, Chuncheon, Korea
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Ameen F. Improving Tannery Wastewater Treatments Using an Additional Microbial Treatment with a Bacterial-Fungal Consortium. BIOLOGY 2023; 12:1507. [PMID: 38132333 PMCID: PMC10741134 DOI: 10.3390/biology12121507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 12/06/2023] [Accepted: 12/08/2023] [Indexed: 12/23/2023]
Abstract
Environmental pollutants such as toxic heavy metals and oxygen-demanding solids are generated by leather manufacturing. In most tanneries, wastewaters are treated with physico-chemical methods but overly high levels of pollutants remain in surface waters. The efficiency of tanning wastewater treatment with conventional techniques was evaluated in four tanneries in Saudi Arabia. It was observed that the wastewaters contained high amounts of pollutants, needing further treatment. We isolated microorganisms from the wastewaters and carried out experiments to treat the effluents with different bacteria, fungi, and their consortia. We hypothesized that a consortium of microorganisms is more efficient than the single microorganisms in the consortium. The efficiency of five single bacterial and five fungal species from different genera was tested. In a consortium experiment, the efficiency of nine bacterial-fungal consortia was studied. The bacterium Corynebacterium glutamicum and the fungus Acremonium sp. were the most efficient in the single-microbe treatment. In the consortium treatment, the consortium of these two was the most efficient at treating the effluent. The factory wastewater treatment reduced total dissolved solids (TDS) from 1885 mg/L to 880 mg/L. C. glutamicum treatment reduced TDS to 150 mg/L and Acremonium sp. to 140 mg/L. The consortium of these two reduced TDS further to 80 mg/L. Moreover, the factory treatment reduced BOD from 943 mg/L to 440 mg/L, C. glutamicum to 75 mg/L, and Acremonium sp. 70 mg/L. The consortium reduced BOD further to 20 mg/L. The total heavy-metal concentration (Cd, Cr, Cu, Mn, and Pb) was reduced by the factory treatment from 43 μg/L to 26 μg/L and by the consortium to 0.2 μg/L. The collagen concentration that was studied using hydroxyproline assay decreased from 120 mg/L to 39 mg/L. It was shown that the consortium of the bacterium C. glutamicum and the fungus Acremonium sp. was more efficient in reducing the pollutants than the single species. The consortium reduced almost all parameters to below the environmental regulation limit for wastewater discharge to the environment in Saudi Arabia. The consortium should be studied further as an additional treatment to the existing conventional tannery wastewater treatments.
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Affiliation(s)
- Fuad Ameen
- Department of Botany & Microbiology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
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3
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Gao XX, Wang YW, An YC, Ren RY, Lin YH, Wang N, Wang YF, Han JL, Hao ZN, Liu JF, Wang AJ, Ren NQ. Molecular insights into the dissolved organic matter of leather wastewater in leather industrial park wastewater treatment plant. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 882:163174. [PMID: 37028676 DOI: 10.1016/j.scitotenv.2023.163174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Revised: 02/23/2023] [Accepted: 03/26/2023] [Indexed: 06/01/2023]
Abstract
Leather wastewater (LW) effluent is characterized by complex organic matter, high salinity, and poor biodegradability. To meet the discharge standards, LW effluent is often mixed with municipal wastewater (MW) before being treated at a leather industrial park wastewater treatment plant (LIPWWTP). However, whether this method efficiently removes the dissolved organic matter (DOM) from LW effluent (LWDOM) remains debatable. In this study, the transformation of DOM during full-scale treatment was revealed using spectroscopy and Fourier transform ion cyclotron resonance mass spectrometry. LWDOM exhibited higher aromaticity and lower molecular weight than DOM in MW (MWDOM). The DOM properties in mixed wastewater (MixW) were similar to those in LWDOM and MWDOM. The MixW was treated using a flocculation/primary sedimentation tank (FL1/PST), anoxic/oxic (A/O) process, secondary sedimentation tank (SST), flocculation/sedimentation tank, denitrification filter (FL2/ST-DNF), and an ozonation contact reactor (O3). The FL1/PST unit preferentially removed the peptide-like compounds. The A/O-SST units had the highest removal efficiencies for dissolved organic carbon (DOC) (61.34 %) and soluble chemical oxygen demand (SCOD) (52.2 %). The FL2/ST-DNF treatment removed the lignin-like compounds. The final treatment showed poor DOM mineralization efficiency. The correlation between water quality indices, spectral indices, and molecular-level parameters indicated that lignin-like compounds were strongly correlated with spectral indices and CHOS compounds considerably contributed to the SCOD and DOC. Although the effluent SCOD met the discharge standard, some refractory DOM from LW remained in the effluent. This study illustrates the composition and transformation of DOM and provides theoretical guidance for improving the current treatment processes.
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Affiliation(s)
- Xiao-Xu Gao
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 10085, PR China
| | - Yun-Wen Wang
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 10085, PR China
| | - Ye-Chen An
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, PR China
| | - Rui-Yun Ren
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, PR China
| | - Yao-Hui Lin
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 10085, PR China
| | - Ning Wang
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 10085, PR China
| | - Yi-Fan Wang
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, PR China
| | - Jing-Long Han
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, PR China.
| | - Zhi-Neng Hao
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 10085, PR China.
| | - Jing-Fu Liu
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 10085, PR China
| | - Ai-Jie Wang
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, PR China
| | - Nan-Qi Ren
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, PR China
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Devi A, Verma M, Saratale GD, Saratale RG, Ferreira LFR, Mulla SI, Bharagava RN. Microalgae: A green eco-friendly agents for bioremediation of tannery wastewater with simultaneous production of value-added products. CHEMOSPHERE 2023:139192. [PMID: 37353172 DOI: 10.1016/j.chemosphere.2023.139192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 06/09/2023] [Accepted: 06/10/2023] [Indexed: 06/25/2023]
Abstract
Tannery wastewater (TWW) has high BOD, COD, TS and variety of pollutants like chromium, formaldehydes, biocides, oils, chlorophenols, detergents and phthalates etc. Besides these pollutants, TWW also rich source of nutrients like nitrogen, phosphorus, carbon and sulphur etc. that can be utilized by microalgae during their growth. Direct disposal of TWW into the environment may lead severe environmental and health threats, therefore it needs to be treated adequately. Microalgae are considered as an efficient microorganisms (fast growing, adaptability and strain robustness, high surface to volume ratio, energy saving) for remediation of wastewaters with simultaneous biomass recovery and generation of value added products (VAPs) such as biofuels, biohydrogen, biopolymer, biofertilizer, pigments, bioethanol, bioactive compounds, nutraceutical etc. Most microalgae are photosynthetic and use CO2 and light energy to synthesise carbohydrate and reduces the emission of greenhouse gasses. Microalgae are also reported to remove heavy metals and antibiotics from wastewaters by bioaccumulation, biodegradation and biosorption. Microalgal treatment can be an alternative of conventional processes with generation of VAPs. The use of biotechnology in wastewater remediation with simultaneous generation of VAPs is trending. The validation of economic viability and environmental sustainability, life cycle assessment studies and techno-economic analysis is undergoing. Thus, in this review, the characteristics of TWW and microalgae are summarized, which manifest microalgae as potential candidates for wastewater remediation with simultaneous production of VAPs. Further, the treatment mechanisms, various factors (physical, chemical, mechanical and biological etc.) affecting treatment efficiency as well as challenges associated with microalgal remediation are also discussed.
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Affiliation(s)
- Anuradha Devi
- Laboratory of Bioremediation and Metagenomics Research (LBMR), Department of Environmental Microbiology (DEM), Babasaheb Bhimrao Ambedkar University, Vidya Vihar, Raebareli Road, Lucknow-226 025 (U.P.), India
| | - Meenakshi Verma
- University Centre of Research and Development, Department of Chemistry, Chandigarh University, Gharuan, Mohali 140413, Panjab, India
| | - Ganesh Dattatraya Saratale
- Department of Food Science and Biotechnology, Dongguk University, Seoul, Ilsandong-gu, Goyang-si, Gyeonggi-do, 10326, Republic of Korea
| | - Rijuta Ganesh Saratale
- Research Institute of Biotechnology and Medical Converged Science, Dongguk University-Seoul, Ilsandong-gu, Goyang-si, Gyeonggido 10326, Republic of Korea
| | - Luiz Fernando R Ferreira
- Waste and Effluent Treatment Laboratory, Institute of Technology and Research (ITP), Tiradentes University, Farolândia, Aracaju, SE 49032-490, Brazil; Graduate Program in Process Engineering, Tiradentes University (UNIT), Av. Murilo Dantas, 300, Farolândia, 49032-490 Aracaju, Sergipe, Brazil
| | - Sikandar I Mulla
- Department of Biochemistry, School of Applied Sciences, REVA University, Bangalore, India
| | - Ram Naresh Bharagava
- Laboratory of Bioremediation and Metagenomics Research (LBMR), Department of Environmental Microbiology (DEM), Babasaheb Bhimrao Ambedkar University, Vidya Vihar, Raebareli Road, Lucknow-226 025 (U.P.), India.
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Saira GC, Shanthakumar S. Zero waste discharge in tannery industries - An achievable reality? A recent review. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 335:117508. [PMID: 36812686 DOI: 10.1016/j.jenvman.2023.117508] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 02/03/2023] [Accepted: 02/11/2023] [Indexed: 06/18/2023]
Abstract
In the recent times, more attention is on industrial waste management due to the unaffordable space for dump yards and landfills and the increased charges for waste dumping. Even though the vegan revolution and plant-based meat products are booming, the traditional slaughterhouses and the wastes produced by them continue to be a concern. Waste valorisation is an established procedure striving to create a closed chain process in industries where there is no refuse. Although a highly polluting industry, slaughterhouse industry wastes have been recycled to economically viable leather since ancient times. However, the tannery industry is causing pollution in par with or even more than the slaughterhouses. Effective management of the liquid and solid wastes from the tannery is of utmost concern because of its toxicity. The hazardous wastes generated enter the food chain, causing long term impacts in the ecosystem. Several leather waste transformation processes are widely used in the industries, and they are yielding good products of economic value. However careful exploration into the processes and products of waste valorisation are often ignored as long as the transformed waste product is of higher value than the waste. The most efficient and environmentally friendly waste management technique should convert the refuse into a value-added utilization without any toxic leftovers. Zero waste concept is an extension of the zero liquid discharge concept, where the solid waste is also treated and reused to such an extent that there is no residue to be sent to the landfill. This review initially presents the existing methods for the de-toxification of tannery wastes and examines the possibility of solid waste management within the tannery industry to attain zero waste discharge.
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Affiliation(s)
- G C Saira
- Department of Environmental and Water Resources Engineering, School of Civil Engineering, Vellore Institute of Technology (VIT), Vellore, 632014, India
| | - S Shanthakumar
- Centre for Clean Environment, Vellore Institute of Technology (VIT), Vellore, 632014, India.
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6
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Li G, Zhong H, Yang Y, Zhu L, Liu X, Wang H. Effect of modified kaolin conditioning sludge on organic matter properties. Biochem Eng J 2022. [DOI: 10.1016/j.bej.2022.108701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Horn EJ, van Hille RP, Oyekola OO, Welz PJ. Functional Microbial Communities in Hybrid Linear Flow Channel Reactors for Desulfurization of Tannery Effluent. Microorganisms 2022; 10:2305. [PMID: 36422375 PMCID: PMC9695182 DOI: 10.3390/microorganisms10112305] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/19/2024] Open
Abstract
Recent research has demonstrated that hybrid linear flow channel reactors (HLFCRs) can desulfurize tannery effluent via sulfate reduction and concurrent oxidation of sulfide to elemental sulfur. The reactors can be used to pre-treat tannery effluent to improve the efficiency of downstream anaerobic digestion and recover sulfur. This study was conducted to gain insight into the bacterial communities in HLFCRs operated in series and identify structure-function relationships. This was accomplished by interpreting the results obtained from amplicon sequencing of the 16S rRNA gene and quantification of the dissimilatory sulfite reducing (dsrB) gene. In an effort to provide a suitable inoculum, microbial consortia were harvested from saline estuaries and enriched. However, it was found that bioaugmentation was not necessary because native communities from tannery wastewater were selected over exogenous communities from the enriched consortia. Overall, Dethiosulfovibrio sp. and Petrimonas sp. were strongly selected (maximum relative abundances of 29% and 26%, respectively), while Desulfobacterium autotrophicum (57%), and Desulfobacter halotolerans (27%) dominated the sulfate reducing bacteria. The presence of elemental sulfur reducing genera such as Dethiosulfovibrio and Petrimonas is not desirable in HLFCRs, and strategies to counter their selection need to be considered to ensure efficiency of these systems for pre-treatment of tannery effluent.
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Sun H, Xia J, Wu B, Ren H, Zhang X, Ye L. Aerobic starvation treatment of activated sludge enhances the degradation efficiency of refractory organic compounds. WATER RESEARCH 2022; 224:119069. [PMID: 36108399 DOI: 10.1016/j.watres.2022.119069] [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: 05/22/2022] [Revised: 09/04/2022] [Accepted: 09/05/2022] [Indexed: 06/15/2023]
Abstract
Many refractory organic compounds (ROCs) in wastewater are toxic to human and aquatic organisms. Here, we reported an aerobic starvation approach to improve the degradation efficiencies of ROCs in activated sludge systems. The highest degradation rates of bisphenol AF (BPAF) (11.4 mg/g VSS · h) and gabapentin (GBP) (8.9 mg/g VSS · h) were achieved on the second day of the starvation process. While, the degradation rate of bisphenol A (BPA) on the 43rd day reached the maximum value of 0.8 mg/g VSS ·h, which was significantly higher than that of the seeding sludge (0.01 mg/g VSS · h). To investigate the mechanisms of this finding, we applied magnetic-nanoparticle mediated isolation, 16S rRNA gene sequencing, metagenomic sequencing and metatranscriptomic sequencing to analyze the microbial community structures and functions during the starvation process. The results showed that the increase of the BPA degradation ability was caused by the increase of the relative abundance of BPA degrading bacteria (Sphingomonas, Achromobacter, etc.), while, the enhancement of BPAF and GBP degradation was attributed to the increase of the expression of ROC degrading genes. Overall, these results improve our understanding of the microbial ecology of starved activated sludge and provide useful information for the future development of ROC removal technologies.
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Affiliation(s)
- Haohao Sun
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing 210023, China
| | - Juntao Xia
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing 210023, China
| | - Bing Wu
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing 210023, China
| | - Hongqiang Ren
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing 210023, China
| | - Xuxiang Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing 210023, China.
| | - Lin Ye
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing 210023, China.
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Liu K, Chen J, Sun F, Liu Y, Tang M, Yang Y. Historical development and prospect of intimately coupling photocatalysis and biological technology for pollutant treatment in sewage: A review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 835:155482. [PMID: 35483466 DOI: 10.1016/j.scitotenv.2022.155482] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Revised: 04/17/2022] [Accepted: 04/19/2022] [Indexed: 06/14/2023]
Abstract
Through the synergistic effect of photocatalysis and biodegradation, intimately coupling photocatalysis and biological (ICPB) technology could improve the removal rate and mineralization rate of refractory pollutants and reduce the toxicity of intermediate products. ICPB system was characterized with the advantages of simple operation, low energy consumption and high treatment efficiency. As a new sewage treatment technology, ICPB system has shown great potential in the treatment of refractory pollutants, and has been widely concerned. In this study, the research progress of photocatalyst, carrier and biofilm in ICPB system were discussed, and the degradation mechanism was introduced. The shortcomings of the current ICPB system were pointed out, and the possible research directions of ICPB in the future were proposed. This review aimed to deepen the understanding of ICPB technology and promoted the further development of ICPB technology in the treatment of refractory pollutants.
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Affiliation(s)
- Kai Liu
- School of Life Sciences, Qufu Normal University, Qufu 273165, PR China
| | - Junfeng Chen
- School of Life Sciences, Qufu Normal University, Qufu 273165, PR China.
| | - Fengfei Sun
- School of Life Sciences, Qufu Normal University, Qufu 273165, PR China
| | - Yanyan Liu
- School of Life Sciences, Qufu Normal University, Qufu 273165, PR China
| | - Meizhen Tang
- School of Life Sciences, Qufu Normal University, Qufu 273165, PR China
| | - Yuewei Yang
- School of Life Sciences, Qufu Normal University, Qufu 273165, PR China.
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Dos Santos JRN, Alves ICB, Marques ALB, Marques EP. Bibliometric analysis of global research progress on electrochemical degradation of organic pollutants. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:54769-54781. [PMID: 35305220 PMCID: PMC8934053 DOI: 10.1007/s11356-022-19534-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Accepted: 02/26/2022] [Indexed: 06/14/2023]
Abstract
As a result of anthropogenic action, an increasing amount of toxic organic compounds has been released into the environment. These pollutants have adverse effects on human health and wildlife, which has motivated the development of different types of technologies for the treatment of effluents and contaminated environments. The electrochemical degradation of organic pollutants has attracted the interest of research centers around the world for its environmental compatibility, high efficiency, and affordable cost. In the present study, a bibliometric analysis was performed using the Web of Science database in order to assess the progress of publications related to electrochemical degradation of organic pollutants between the years 2001 and 2021. The data retrieved showed a significant increase in publications related to the topic in the last 20 years. Electrochimica Acta was the magazine responsible for the largest number of publications (291, 6.52%). The studies mainly included the areas of engineering, chemistry, and environmental science ecology. China with a total of 1472 (32.96%) publications dominated research in this area, followed by Spain (436, 9.76%) and Brazil (345, 7.72%). The institutions with the highest number of contributions were the University of Barcelona and the Chinese Academy of Sciences, and the most productive authors were Brillas E. and Oturan M. A. The results of this study provide important references and information on possible research directions for future investigations on electrochemical degradation of organic pollutants.
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Affiliation(s)
- José Ribamar Nascimento Dos Santos
- Postgraduate Program in Biodiversity and Biotechnology of the Legal Amazon (BIONORTE), Federal University of Maranhão (UFMA), São Luís, MA, Brazil
- Department of Chemistry, NEPE: LPQA & LAPQAP), Federal University of Maranhão (UFMA), São Luís, MA, Brazil
| | - Ismael Carlos Braga Alves
- Postgraduate Program in Biodiversity and Biotechnology of the Legal Amazon (BIONORTE), Federal University of Maranhão (UFMA), São Luís, MA, Brazil
- Department of Chemical Technology, NEPE: LPQA & LAPQAP), Federal University of Maranhão (UFMA), São Luís, MA, Brazil
| | - Aldaléa Lopes Brandes Marques
- Postgraduate Program in Biodiversity and Biotechnology of the Legal Amazon (BIONORTE), Federal University of Maranhão (UFMA), São Luís, MA, Brazil.
- Department of Chemical Technology, NEPE: LPQA & LAPQAP), Federal University of Maranhão (UFMA), São Luís, MA, Brazil.
| | - Edmar Pereira Marques
- Postgraduate Program in Biodiversity and Biotechnology of the Legal Amazon (BIONORTE), Federal University of Maranhão (UFMA), São Luís, MA, Brazil
- Department of Chemistry, NEPE: LPQA & LAPQAP), Federal University of Maranhão (UFMA), São Luís, MA, Brazil
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Liu J, Zang N, Gao L, Liu X, Tian H, Yue P, Li T. A modified packed anaerobic baffled reactor based on phase separation for the treatment of decentralized wastewater: Performance and microbial communities. Biochem Eng J 2022. [DOI: 10.1016/j.bej.2022.108455] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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12
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Liang Y, Feng Q, Zhang J, Jiao C, Xiong J, Wang S, Yang Q. Coupling of photocatalysis and biological treatment for elemental chlorine free bleaching wastewater: Application of factorial design methodology. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 302:114111. [PMID: 34800771 DOI: 10.1016/j.jenvman.2021.114111] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 10/20/2021] [Accepted: 11/13/2021] [Indexed: 06/13/2023]
Abstract
In this study, the visible-light-induced intimately coupled photocatalysis and biodegradation (ICPB) technology was fabricated using the TiO2/bagasse cellulose composite as the carrier and Phanerochaete mixed activated sludge as the biological source. The ICPB degradation effect of elemental chlorine free (ECF) bleaching wastewater was evaluated via the response surface design. Then, the wastewater was characterized, including absorbable organic halogen (AOX), dissolved organic carbon (DOC), chemical oxygen demand (COD), chroma, pH, suspended solids, and the organic compound changes in wastewater were analyzed by fourier transform infrared spectroscopy (FT-IR). Under the optimal conditions of pH 7, carrier filling rate of 5%, aeration rate of 2 L/min, and reaction time of 7 h, the degradation efficiencies of AOX, COD, and DOC were 95%, 91%, and 82%, respectively. The X-ray photoelectron spectroscopy (XPS) results of the ICPB carrier after the reaction were almost identical to those before the reaction. The biomass and its activity on the ICPB system were analyzed by the dominant bacteria during degradation (Curaneotrichosporon, Paenibacillus, Cellulonas, Phanerochaete, Dechlorobacter, Rhodotorula, Sphingobacterium, and Ruminiclostridium), which had a good degradation effect on wastewater. This study affords a novel method for the degradation of ECF bleaching wastewater and a new idea for ICPB technology optimization.
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Affiliation(s)
| | - Qilin Feng
- Guangxi University, Nanning, 530004, China
| | | | | | - Jianhua Xiong
- Guangxi University, Nanning, 530004, China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning, 530004, China.
| | - Shuangfei Wang
- Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning, 530004, China
| | - Qifeng Yang
- Guangxi Bossco Environmental Protection Technology Co., Ltd., Nanning, 530007, China
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Sodhi V, Singh C, Pal Singh Cheema P, Sharma R, Bansal A, Kumar Jha M. Simultaneous sludge minimization, pollutant and nitrogen removal using integrated MBBR configuration for tannery wastewater treatment. BIORESOURCE TECHNOLOGY 2021; 341:125748. [PMID: 34416656 DOI: 10.1016/j.biortech.2021.125748] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Revised: 08/04/2021] [Accepted: 08/07/2021] [Indexed: 06/13/2023]
Abstract
An advanced operational configuration of anoxic-aerobic moving bed biofilm reactors (AMOMOX process) was experimentally demonstrated to achieve simultaneous sludge yield minimization, pollution and nitrogen removal. The AMOMOX experimentation witnessed considerable variation in process parameters while feed operation changed from synthetic wastewater to real tannery influent. The strict maintenance of operational strategies resulted prominent removal of TCOD, SCOD, ammonia nitrogen and total nitrogen higher upto 93.5%, 94.8%, 95.2% and 88.7% respectively. The nourishment of filamentous microbiota and purposeful promotion of cell-lysis effectively sustained sludge yield restriction. Here, the sludge yield (Yobs) lowering upto 0.51 gVSS/gCOD ultimately turned an overall sludge minimization of 46.8% compared with a parallel-run conventional activated sludge treatment. The observations were further supported by sophisticated instrumental imaging, thermogravimetric analysis and batch digestion test of the sludge pool. The experimental Yobs and corresponding solids retention showed consensus with the reported correlation model and, thus, a modified correlation was tested.
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Affiliation(s)
- Vijay Sodhi
- Department of Civil Engineering, Guru Nanak Dev Engineering College, Ludhiana City, India.
| | - Charanjit Singh
- Department of Civil Engineering, Guru Nanak Dev Engineering College, Ludhiana City, India
| | | | - Reena Sharma
- Department of Chemistry, A. B. V. Government Institute of Engineering and Technology, Shimla, India
| | - Ajay Bansal
- Department of Chemical Enginerring, Dr. B. R. Ambedkar National Institute of Technology, Jalandhar City, India
| | - Mithilesh Kumar Jha
- Department of Chemical Enginerring, Dr. B. R. Ambedkar National Institute of Technology, Jalandhar City, India.
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