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Li Q, Lan Y, Yang Y, Kang S, Wang X, Jiang J, Liu S, Wang Q, Zhang W, Zhang L. Effect of luminescent materials on the biochemistry, ultrastructure, and rhizobial microbiota of Spirodela polyrhiza. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 207:108427. [PMID: 38367389 DOI: 10.1016/j.plaphy.2024.108427] [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: 11/04/2023] [Revised: 01/13/2024] [Accepted: 02/05/2024] [Indexed: 02/19/2024]
Abstract
Fluorescent materials and technologies have become widely used in scientific research, and due to the ability to convert light wavelengths, their application to photosynthetic organisms can affect their development by altering light quality. However, the impacts of fluorescent materials on aquatic plants and their environmental risks remain unclear. To assess the effects of luminescent materials on floating aquatic macrophytes and their rhizosphere microorganisms, 4-(di-p-tolylamino)benzaldehyde-A (DTB-A) and 4-(di-p-tolylamino)benzaldehyde-M (DTB-M) (emitting blue-green and orange-red light, respectively) were added individually and jointly to Spirodela polyrhiza cultures and set at different concentrations (1, 10, and 100 μM). Both DTB-A and DTB-M exhibited phytotoxicity, which increased with concentration under separate treatment. Moreover, the combined group exhibited obvious stress relief at 10 μM compared to the individually treated group. Fluorescence imaging showed that DTB-A and DTB-M were able to enter the cell matrix and organelles of plant leaves and roots. Peroxidation induced cellular damage, contributing to a decrease in superoxide dismutase (SOD) and peroxidase (POD) activities and malondialdehyde (MDA) accumulation. Decomposition of organelle structures, starch accumulation in chloroplasts, and plasmolysis were observed under the ultrastructure, disrupting photosynthetic pigment content and photosynthesis. DTB-A and DTB-M exposure resulted in growth inhibition, dry weight loss, and leaf yellowing in S. polyrhiza. A total of 3519 Operational Taxonomic Units (OTUs) were identified in the rhizosphere microbiome. The microbial communities were dominated by Alphaproteobacteria, Oxyphotobacteria, and Gammaproteobacteria, with the abundance and diversity varied significantly among treatment groups according to Shannon, Simpson, and Chao1 indices. This study revealed the stress defense response of S. polyrhiza to DTB-A and DTB-M exposures, which provides a broader perspective for the bioremediation of pollutants using aquatic plants and supports the further development of fluorescent materials for applications.
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Affiliation(s)
- Qi Li
- College of Ecology and Environment, Chengdu University of Technology, Chengdu, 610059, PR China.
| | - Yiyang Lan
- College of Ecology and Environment, Chengdu University of Technology, Chengdu, 610059, PR China
| | - Yixia Yang
- College of Ecology and Environment, Chengdu University of Technology, Chengdu, 610059, PR China
| | - Shiyun Kang
- College of Ecology and Environment, Chengdu University of Technology, Chengdu, 610059, PR China
| | - Xin Wang
- The Chinese University of Hong Kong, Shenzhen, 518172, PR China
| | - Jiarui Jiang
- College of Ecology and Environment, Chengdu University of Technology, Chengdu, 610059, PR China
| | - Shengyue Liu
- College of Ecology and Environment, Chengdu University of Technology, Chengdu, 610059, PR China
| | | | - Weizhen Zhang
- College of Ecology and Environment, Chengdu University of Technology, Chengdu, 610059, PR China
| | - Liping Zhang
- The Chinese University of Hong Kong, Shenzhen, 518172, PR China.
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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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Ma H, Zhao Y, Yang K, Wang Y, Zhang C, Ji M. Application oriented bioaugmentation processes: Mechanism, performance improvement and scale-up. BIORESOURCE TECHNOLOGY 2022; 344:126192. [PMID: 34710609 DOI: 10.1016/j.biortech.2021.126192] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 10/18/2021] [Accepted: 10/19/2021] [Indexed: 06/13/2023]
Abstract
Bioaugmentation is an optimization method with great potential to improve the treatment effect by introducing specific strains into the biological treatment system. In this study, a comprehensive review of the mechanism of bioaugmentation from the aspect of microbial community structure, the optimization methods facilitating application as well as feasible approaches of scale-up application has been provided. The different contribution of indigenous and exogenous strains was critically analyzed, the relationship between microbial community variation and system performance was clarified. Operation regulation and immobilization technologies are effective methods to deal with the possible failure of bioaugmentation. The gradual expansion from lab-scale, pilot scale to full-scale, the transformation and upgrading of wastewater treatment plants through the combination of direct dosing and biofilm, and the application of side-stream reactors are feasible ways to realize the full-scale application. The future challenges and prospects in this field were also proposed.
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Affiliation(s)
- Huilin Ma
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, China
| | - Yingxin Zhao
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, China.
| | - Kaichao Yang
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, China
| | - Yue Wang
- School of Environmental Science and Engineering, Tiangong University, Tianjin 300387, China
| | - Chenggong Zhang
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, China
| | - Min Ji
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, China
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4
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Bioaugmentation treatment of a novel microbial consortium for degradation of organic pollutants in tannery wastewater under a full-scale oxic process. Biochem Eng J 2021. [DOI: 10.1016/j.bej.2021.108131] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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5
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Santhanarajan AE, Sul WJ, Yoo KJ, Seong HJ, Kim HG, Koh SC. Metagenomic Insight of a Full Scale Eco-Friendly Treatment System of Textile Dye Wastewater Using Bioaugmentation of the Composite Culture CES-1. Microorganisms 2021; 9:microorganisms9071503. [PMID: 34361939 PMCID: PMC8306160 DOI: 10.3390/microorganisms9071503] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 07/09/2021] [Accepted: 07/12/2021] [Indexed: 11/16/2022] Open
Abstract
Effects of bioaugmentation of the composite microbial culture CES-1 on a full scale textile dye wastewater treatment process were investigated in terms of water quality, sludge reduction, dynamics of microbial community structures and their functional genes responsible for degradation of azo dye, and other chemicals. The removal efficiencies for Chemical Oxygen Demand (COD), Total Nitrogen (T-N), Total Phosphorus (T-P), Suspended Solids (SS), and color intensity (96.4%, 78.4, 83.1, 84.4, and 92.0, respectively) 300-531 days after the augmentation were generally improved after bioaugmentation. The denitrification linked to T-N removal appeared to contribute to the concomitant COD removal that triggered a reduction of sludge (up to 22%) in the same period of augmentation. Azo dye and aromatic compound degradation and other downstream pathways were highly metabolically interrelated. Augmentation of CES-1 increased microbial diversity in the later stages of augmentation when a strong microbial community selection of Acinetobacterparvus, Acinetobacterjohnsonii, Marinobacter manganoxydans, Verminephrobacter sp., and Arcobacter sp. occurred. Herein, there might be a possibility that the CES-1 augmentation could facilitate the indigenous microbial community successions so that the selected communities made the augmentation successful. The metagenomic analysis turned out to be a reasonable and powerful tool to provide with new insights and useful biomarkers for the complex environmental conditions, such as the full scale dye wastewater treatment system undergoing bioaugmentation.
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Affiliation(s)
- Aalfin Emmanuel Santhanarajan
- Division of Civil, Environmental Engineering and Logistics System, Korea Maritime and Ocean University, Busan 49112, Korea; (A.E.S.); (K.-J.Y.)
| | - Woo-Jun Sul
- Department of Systems Biotechnology, Chung-Ang University, Anseong 06974, Korea; (W.-J.S.); (H.-J.S.)
| | - Keun-Je Yoo
- Division of Civil, Environmental Engineering and Logistics System, Korea Maritime and Ocean University, Busan 49112, Korea; (A.E.S.); (K.-J.Y.)
| | - Hoon-Je Seong
- Department of Systems Biotechnology, Chung-Ang University, Anseong 06974, Korea; (W.-J.S.); (H.-J.S.)
| | | | - Sung-Cheol Koh
- Division of Civil, Environmental Engineering and Logistics System, Korea Maritime and Ocean University, Busan 49112, Korea; (A.E.S.); (K.-J.Y.)
- Correspondence: ; Tel.: +82-10-9900-7294
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6
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Liang J, Wang Q, Li QX, Jiang L, Kong J, Ke M, Arslan M, Gamal El-Din M, Chen C. Aerobic sludge granulation in shale gas flowback water treatment: Assessment of the bacterial community dynamics and modeling of bioreactor performance using artificial neural network. BIORESOURCE TECHNOLOGY 2020; 313:123687. [PMID: 32574748 DOI: 10.1016/j.biortech.2020.123687] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 06/11/2020] [Accepted: 06/12/2020] [Indexed: 06/11/2023]
Abstract
Flowback water from shale gas extraction is highly saline and comprises complex organic substances, thereby posing a significant challenge for the environmental management of the unconventional natural gas industry. In this work, an aerobic granular sludge (AGS) method was successfully used for the treatment of flowback water from shale gas extraction. The formed AGS had a diameter of 0.25-2.0 mm and the total sludge volume index was 23.40 mL g-1. The AGS efficiently removed COD, NH4+-N and TN by 70.1%, 92.1%, and 59.2%, respectively. The bacterial communities responsible for the removal of nitrogen and degradation of organics were enriched in AGS. The dynamics of contaminant removal was further explained with a three-layered artificial neural network model. The results showed that the initial concentration of COD, TDS, NH4+-N and TN governed the contaminants' removal. As for operating parameters, aerating time showed a strong effect on NH4+-N and TN removal, whereas settling time impacted the COD removal.
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Affiliation(s)
- Jiahao Liang
- State Key Laboratory of Heavy Oil Processing, State Key Laboratory of Petroleum Pollution Control, China University of Petroleum-Beijing, Beijing 102249, China
| | - Qinghong Wang
- State Key Laboratory of Heavy Oil Processing, State Key Laboratory of Petroleum Pollution Control, China University of Petroleum-Beijing, Beijing 102249, China
| | - Qing X Li
- Department of Molecular Biosciences and Bioengineering, University of Hawaii at Manoa, Honolulu, HI 96822, United States
| | - Liangyan Jiang
- State Key Laboratory of Heavy Oil Processing, State Key Laboratory of Petroleum Pollution Control, China University of Petroleum-Beijing, Beijing 102249, China
| | - Jiawen Kong
- State Key Laboratory of Heavy Oil Processing, State Key Laboratory of Petroleum Pollution Control, China University of Petroleum-Beijing, Beijing 102249, China
| | - Ming Ke
- State Key Laboratory of Heavy Oil Processing, State Key Laboratory of Petroleum Pollution Control, China University of Petroleum-Beijing, Beijing 102249, China
| | - Muhammad Arslan
- Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada
| | - Mohamed Gamal El-Din
- Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada
| | - Chunmao Chen
- State Key Laboratory of Heavy Oil Processing, State Key Laboratory of Petroleum Pollution Control, China University of Petroleum-Beijing, Beijing 102249, China.
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7
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Feng Q, Song YC, Li J, Wang Z, Wu Q. Influence of electrostatic field and conductive material on the direct interspecies electron transfer for methane production. ENVIRONMENTAL RESEARCH 2020; 188:109867. [PMID: 32846649 DOI: 10.1016/j.envres.2020.109867] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 06/12/2020] [Accepted: 06/20/2020] [Indexed: 06/11/2023]
Abstract
The influence of electrostatic field on the direct interspecies electron transfer (DIET) pathways for methane production was investigated in a batch bioelectrochemical anaerobic digester (BEAD). The ultimate methane production and methane yield in the BEAD reactor saturated to 925 ± 29 mL/L and 309.9 ± 9.6 mL CH4/g COD, respectively, which were much higher than 616 ± 3 mL/L and 205.4 ± 205.4 mL CH4/g COD in the anaerobic digester (AD). In the cyclic voltammogram (CV) for bulk solution, the oxidation peak current was 0.52 mA in the BEAD reactor, which was higher than 0.24 mA of AD reactor. This shows that the oxidizing ability of microorganisms was greatly improved in the BEAD reactor. Anaerolineaceae, a well-known electroactive bacterial family, was well enriched in the BEAD reactor. It indicates that the electrostatic field can enrich the electroactive bacteria and activate the DIET pathways for methane production. Moreover, the conductive material (activated carbon) further improved the performance of BEAD reactor, implies that the conductivities of bulk solution is one of the important parameters for the DIET pathways.
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Affiliation(s)
- Qing Feng
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353, China; College of Environmental Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353, China.
| | - Young-Chae Song
- Department of Environmental Engineering, Korea Maritime and Ocean University, Busan, 49112, South Korea
| | - Jun Li
- Institute of Engineering Thermophysics, School of Energy and Power Engineering, Chongqing University, Chongqing, 400030, China
| | - Zejie Wang
- College of Environmental Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353, China
| | - Qin Wu
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353, China
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Fernandez M, Pereira PP, Agostini E, González PS. Impact assessment of bioaugmented tannery effluent discharge on the microbiota of water bodies. ECOTOXICOLOGY (LONDON, ENGLAND) 2020; 29:973-986. [PMID: 32556791 DOI: 10.1007/s10646-020-02237-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 05/30/2020] [Indexed: 05/09/2023]
Abstract
Effluents are commonly discharged into water bodies, and in order for the process to be as environmentally sound as possible, the potential effects on native water communities must be assessed alongside the quality parameters of the effluents themselves. In the present work, changes in the bacterial diversity of streamwater receiving a tannery effluent were monitored by high-throughput MiSeq sequencing. Physico-chemical and microbiological parameters and acute toxicity were also evaluated through different bioassays. After the discharge of treated effluents that had been either naturally attenuated or bioaugmented, bacterial diversity decreased immediately in the streamwater samples, as evidenced by the over-representation of taxa such as Brachymonas, Arcobacter, Marinobacterium, Myroides, Paludibacter and Acinetobacter, typically found in tannery effluents. However, there were no remarkable changes in diversity over time (after 1 day). In terms of the physico-chemical and microbiological parameters analyzed, chemical oxygen demand and total bacterial count increased in response to discharge of the treated effluents. No lethal effects were observed in Lactuca sativa L. seeds or Rhinella arenarum embryos exposed to the streamwater that had received the treated effluents. All of these results contribute to the growing knowledge about the environmental safety of effluent discharge procedures.
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Affiliation(s)
- Marilina Fernandez
- Departamento de Biología Molecular, FCEFQyN, INBIAS-CONICET, Universidad Nacional de Río Cuarto, 5800 Río Cuarto, Córdoba, Argentina
| | - Paola P Pereira
- Departamento de Biología Molecular, FCEFQyN, INBIAS-CONICET, Universidad Nacional de Río Cuarto, 5800 Río Cuarto, Córdoba, Argentina
| | - Elizabeth Agostini
- Departamento de Biología Molecular, FCEFQyN, INBIAS-CONICET, Universidad Nacional de Río Cuarto, 5800 Río Cuarto, Córdoba, Argentina.
| | - Paola S González
- Departamento de Biología Molecular, FCEFQyN, INBIAS-CONICET, Universidad Nacional de Río Cuarto, 5800 Río Cuarto, Córdoba, Argentina
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9
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Li D, Liang X, Li Z, Jin Y, Zhou R, Wu C. Effect of chemical oxygen demand load on the nitrification and microbial communities in activated sludge from an aerobic nitrifying reactor. Can J Microbiol 2019; 66:59-70. [PMID: 31644885 DOI: 10.1139/cjm-2018-0599] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
In this study, we explored the effect of chemical oxygen demand (COD) load on the nitrification and microbial communities in activated sludge isolated from an aerobic nitrifying tank. The activated sludge was cultured in three different COD groups: L-COD, 200 mg/L; M-COD, 1200 mg/L; H-COD, 4200 mg/L. The results indicated that the COD exerts a negligible effect on the nitrogen removal ability within the first 24 h. However, the nitrification rate decreased with culture time; the ammonium degradation rates were found to be 80.26%, 57.56%, and 43.43% at 72 h in the three COD groups, respectively. These values correspond to decreases of 19.40%, 41.83%, and 51.48%, respectively, in relation to those observed at 24 h. The activated sludge in the different COD groups exhibited similar community compositions after 24 h, as assessed by Illumina high-throughput sequencing, while a significant difference in the relative abundances of some organisms occurred after 48 and 72 h. Proteobacteria was the main phylum, with a relative abundance of >51.45%. The genera Aridibacter, Paracoccus, Nitrospira, and Nitrosomonas were suppressed by COD load over time. This study may contribute to our knowledge about the nitrification ability and microbial communities in activated sludge at different COD load levels.
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Affiliation(s)
- Dan Li
- College of Light Industry, Textile & Food Engineering, Sichuan University, Chengdu 610065, P.R. China; Key Laboratory of Leather Chemistry and Engineering, Ministry of Education, Sichuan University, Chengdu 610065, P.R. China.,College of Light Industry, Textile & Food Engineering, Sichuan University, Chengdu 610065, P.R. China; Key Laboratory of Leather Chemistry and Engineering, Ministry of Education, Sichuan University, Chengdu 610065, P.R. China
| | - Xihong Liang
- College of Light Industry, Textile & Food Engineering, Sichuan University, Chengdu 610065, P.R. China; Key Laboratory of Leather Chemistry and Engineering, Ministry of Education, Sichuan University, Chengdu 610065, P.R. China.,College of Light Industry, Textile & Food Engineering, Sichuan University, Chengdu 610065, P.R. China; Key Laboratory of Leather Chemistry and Engineering, Ministry of Education, Sichuan University, Chengdu 610065, P.R. China
| | - Zhengwei Li
- College of Light Industry, Textile & Food Engineering, Sichuan University, Chengdu 610065, P.R. China; Key Laboratory of Leather Chemistry and Engineering, Ministry of Education, Sichuan University, Chengdu 610065, P.R. China.,College of Light Industry, Textile & Food Engineering, Sichuan University, Chengdu 610065, P.R. China; Key Laboratory of Leather Chemistry and Engineering, Ministry of Education, Sichuan University, Chengdu 610065, P.R. China
| | - Yao Jin
- College of Light Industry, Textile & Food Engineering, Sichuan University, Chengdu 610065, P.R. China; Key Laboratory of Leather Chemistry and Engineering, Ministry of Education, Sichuan University, Chengdu 610065, P.R. China.,College of Light Industry, Textile & Food Engineering, Sichuan University, Chengdu 610065, P.R. China; Key Laboratory of Leather Chemistry and Engineering, Ministry of Education, Sichuan University, Chengdu 610065, P.R. China
| | - Rongqing Zhou
- College of Light Industry, Textile & Food Engineering, Sichuan University, Chengdu 610065, P.R. China; Key Laboratory of Leather Chemistry and Engineering, Ministry of Education, Sichuan University, Chengdu 610065, P.R. China.,College of Light Industry, Textile & Food Engineering, Sichuan University, Chengdu 610065, P.R. China; Key Laboratory of Leather Chemistry and Engineering, Ministry of Education, Sichuan University, Chengdu 610065, P.R. China
| | - Chongde Wu
- College of Light Industry, Textile & Food Engineering, Sichuan University, Chengdu 610065, P.R. China; Key Laboratory of Leather Chemistry and Engineering, Ministry of Education, Sichuan University, Chengdu 610065, P.R. China.,College of Light Industry, Textile & Food Engineering, Sichuan University, Chengdu 610065, P.R. China; Key Laboratory of Leather Chemistry and Engineering, Ministry of Education, Sichuan University, Chengdu 610065, P.R. China
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Metagenomic analysis of relationships between the denitrification process and carbon metabolism in a bioaugmented full-scale tannery wastewater treatment plant. World J Microbiol Biotechnol 2019; 35:149. [PMID: 31549239 DOI: 10.1007/s11274-019-2716-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2019] [Accepted: 08/21/2019] [Indexed: 01/08/2023]
Abstract
The goal of this study was to investigate the relationship between the denitrification process and carbon metabolism in a full-scale tannery wastewater treatment plant bioaugmented with the microbial consortium BM-S-1. The metagenomic analysis of the microbial community showed that Brachymonas denitrificans, a known denitrifier, was present at a high level in the treatment stages of buffering (B), primary aeration (PA), and sludge digestion (SD). The occurrences of the amino acid-degrading enzymes alpha ketoglutarate dehydrogenase (α-KGDH) and tryptophan synthase were highly correlated with the presence of denitrification genes, such as napA, narG, nosZ and norB. The occurrence of glutamate dehydrogenase (GDH) was also highly paralleled with the occurrence of denitrification genes such as napA, narG, and norZ. The denitrification genes (nosZ, narG, napA, norB and nrfA) and amino acid degradation enzymes (tryptophan synthase, α-KGDH and pyridoxal phosphate dependent enzymes) were observed at high levels in B. This indicates that degradation of amino acids and denitrification of nitrate may potentially occur in B. The high concentrations of the fatty acid degradation enzyme groups (enoyl-CoA hydratase, 3-hydroxyacyl-CoA dehydrogenase and β-ketothiolase) were observed together with the denitrification genes, such as napA, narG and nosZ. Phospholipase/carboxylesterase, enoyl-CoA hydratase/isomerase, acyl-CoA dehydrogenase, phenylacetate degradation enzyme and 3-hydroxyacyl-CoA dehydrogenase 2 were also dominant in B. All these results clearly indicate that the denitrification pathways are potentially linked to the degradation pathways of amino acids and fatty acids whose degradation products go through the TCA cycle, generating the NADH that is used as electron donors for denitrification.
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Abdulla HM, El-Shatoury SA, El-Shahawy AA, Ghorab SA, Nasr M, Trujillo ME. An integrated bioaugmentation/electrocoagulation concept for olive mill wastewater management and the reuse in irrigation of biofuel plants: a pilot study. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:15803-15815. [PMID: 30953323 DOI: 10.1007/s11356-019-04893-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2018] [Accepted: 03/18/2019] [Indexed: 06/09/2023]
Abstract
A consortium of highly degrading microorganisms was used in an integrated bioaugmentation/electrocoagulation process for treating olive mill wastewater. The system was investigated for treating 1 m3 day-1, at a pilot scale, for 2 years; hydraulic loading rate and organic loading rate were 2880 l m-2 day-1 and 37,930 g COD m-2 day-1, respectively. Average removal efficiency for COD, oils, and total phenols was 63.9%, 85.2%, and 43.6%, respectively. The olive mill consortium, OMC, consisted of seven actinomycete strains. The strains were confirmed, by 16S rDNA analysis, to belong to five Streptomyces, one Kitasatospora, and one Micromonospora strains, at 100-99.06% similarities. Hydrolytic enzyme activities of OMC strains were remarkably higher for degrading cellulosic and lipid constituents (enzyme-cumulative indices, 14-16.1), than the phenolic constituents (indices, 4.1-6.5). The establishment of actinomycetes in the treatment system was indicated by their increased counts in the biofilm at the end of the biofilter, reaching 13-fold higher than that in the control bed. The treated effluent was toxic to the seedlings of Jatropha curcas (Jatropha) and Simmondsia chinensis (Jojoba). Though its application in irrigation of 3-year-old Jatropha shrubs, significantly, enhanced the fruit yield up to 1.85-fold higher than the control, without affecting the seed oil content, after 3-month application, the irrigated soil showed insignificant changes in its biochemical properties. This developed bioaugmentation/electrocoagulation process can treat wastewater with extremely high organic strength, while its approximate construction and operational costs are limited to 0.03 and 0.51 US$ m-3, respectively. It produces a treated effluent that can be reused in irrigation of specific plants. Graphical abstract.
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Affiliation(s)
- Hesham M Abdulla
- Botany Dept., Faculty of Science, Suez Canal University, P.O. Box 41522, Ismailia, Egypt.
| | - Sahar A El-Shatoury
- Botany Dept., Faculty of Science, Suez Canal University, P.O. Box 41522, Ismailia, Egypt
| | - Abeer A El-Shahawy
- Civil Engineering Dept, Faculty of Engineering, Suez Canal University, P.O. Box 41522, Ismailia, Egypt
| | - Safaa A Ghorab
- Forestry and Timber Trees Dept., Hort. Res. Institute, Agric. Research Center, Ismailia, Egypt
| | - Mahmoud Nasr
- Department of Sanitary Engineering, Faculty of Engineering, Alexandria University, P.O. Box 21544, Alexandria, Egypt
| | - Martha E Trujillo
- Department of Microbiology and Genetics, Edificio Departamental, University of Salamanca, Salamanca, Spain
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Anaerobic treatment of opaque beer wastewater with enhanced biogas recovery through Acti-zyme bio augmentation. SOUTH AFRICAN JOURNAL OF CHEMICAL ENGINEERING 2018. [DOI: 10.1016/j.sajce.2018.10.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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13
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Tigini V, Bevione F, Prigione V, Poli A, Ranieri L, Spennati F, Munz G, Varese GC. Tannery mixed liquors from an ecotoxicological and mycological point of view: Risks vs potential biodegradation application. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 627:835-843. [PMID: 29426208 DOI: 10.1016/j.scitotenv.2018.01.240] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Revised: 01/23/2018] [Accepted: 01/24/2018] [Indexed: 06/08/2023]
Abstract
Fungi are known to be present in the activated sludge of wastewater treatment plants (WWTP). Their study should be at the base of an overall vision of the plant effectiveness and of effluents sanitary impact. Moreover, it could be fundamental for the implementation of successful bioaugmentation strategies aimed at the removal of recalcitrant or toxic compounds. This is one of the first studies on the cultivable autochthonous mycoflora present in the mixed liquors of two WWTP treating either vegetable or chromium tannery effluents. All samples showed a risk associated with potential pathogens or toxigenic species and high ecotoxicity (Lepidium sativum and Raphidocelis subcapitata were the most sensitive organisms). Diverse fungal populations developed, depending on the origin of the samples (63% of the 102 identified taxa were sample-specific). The use of a fungistatic was determinant for the isolation and, thus, for the identification of sample-specific species with a lower growth rate. The incubation temperature also affected the mycoflora composition, even though at lower extent. A selective medium, consisting of agarised wastewater, allowed isolating fungi with a biodegradation potential. Pseudallescheria boydii/Scedosporium apiospermum species complex was ubiquitously dominant, indicating a possible role in the degradation of pollutants in both WWTP. Other species, i.e. Trichoderma spp., Trematosphaeria grisea, Geotrichum candidum, Lichtheimia corymbifera, Acremonium furcatum, Penicillium simplicissimum, Penicillium dangeardii, Fusarium solani, Scopulariopsis brevicaulis potentially could be involved in the degradation of specific pollutants of vegetable or chromium tannery wastewaters. However, several of these fungi are potential pathogens and their application, for an in situ treatment, must be carefully evaluated.
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Affiliation(s)
- Valeria Tigini
- Department of Life Sciences and Systems Biology, University of Turin, viale Mattioli 25, 10125 Turin, Italy.
| | - Federico Bevione
- Department of Life Sciences and Systems Biology, University of Turin, viale Mattioli 25, 10125 Turin, Italy
| | - Valeria Prigione
- Department of Life Sciences and Systems Biology, University of Turin, viale Mattioli 25, 10125 Turin, Italy
| | - Anna Poli
- Department of Life Sciences and Systems Biology, University of Turin, viale Mattioli 25, 10125 Turin, Italy
| | - Lucrezia Ranieri
- Department of Life Sciences and Systems Biology, University of Turin, viale Mattioli 25, 10125 Turin, Italy
| | - Francesco Spennati
- Department of Environmental and Civil Engineering, University or Florence, via Santa Marta 3, 50139 Firenze, Italy
| | - Giulio Munz
- Department of Environmental and Civil Engineering, University or Florence, via Santa Marta 3, 50139 Firenze, Italy
| | - Giovanna Cristina Varese
- Department of Life Sciences and Systems Biology, University of Turin, viale Mattioli 25, 10125 Turin, Italy
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14
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Wang S, Lydon KA, White EM, Grubbs JB, Lipp EK, Locklin J, Jambeck JR. Biodegradation of Poly(3-hydroxybutyrate- co-3-hydroxyhexanoate) Plastic under Anaerobic Sludge and Aerobic Seawater Conditions: Gas Evolution and Microbial Diversity. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:5700-5709. [PMID: 29672030 DOI: 10.1021/acs.est.7b06688] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Poly(3-hydroxybutyrate- co-3-hydroxyhexanoate) (poly(3HB- co-3HHx)) thermoplastics are a promising biodegradable alternative to traditional plastics for many consumer applications. Biodegradation measured by gaseous carbon loss of several types of poly(3HB- co-3HHx) plastic was investigated under anaerobic conditions and aerobic seawater environments. Under anaerobic conditions, the biodegradation levels of a manufactured sheet of poly(3HB- co-3HHx) and cellulose powder were not significantly different from one another over 85 days with 77.1 ± 6.1 and 62.9 ± 19.7% of the carbon converted to gas, respectively. However, the sheet of poly(3HB- co-3HHx) had significantly higher methane yield ( p ≤ 0.05), 483.8 ± 35.2 mL·g-1 volatile solid (VS), compared to cellulose controls, 290.1 ± 92.7 mL·g-1 VS, which is attributed to a greater total carbon content. Under aerobic seawater conditions (148-195 days at room temperature), poly(3HB- co-3HHx) sheets were statistically similar to cellulose for biodegradation as gaseous carbon loss (up to 83% loss in about 6 months), although the degradation rate was lower than that for cellulose. The microbial diversity was investigated in both experiments to explore the dominant bacteria associated with biodegradation of poly(3HB- co-3HHx) plastic. For poly(3HB- co-3HHx) treatments, Cloacamonales and Thermotogales were enriched under anaerobic sludge conditions, while Clostridiales, Gemmatales, Phycisphaerales, and Chlamydiales were the most enriched under aerobic seawater conditions.
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Affiliation(s)
- Shunli Wang
- College of Engineering , University of Georgia , Athens , Georgia 30602 , United States
- New Materials Institute , University of Georgia , Athens , Georgia 30602 , United States
| | - Keri A Lydon
- Department of Environmental Health Science , University of Georgia , Athens , Georgia 30602 , United States
| | - Evan M White
- New Materials Institute , University of Georgia , Athens , Georgia 30602 , United States
| | - Joe B Grubbs
- New Materials Institute , University of Georgia , Athens , Georgia 30602 , United States
| | - Erin K Lipp
- Department of Environmental Health Science , University of Georgia , Athens , Georgia 30602 , United States
| | - Jason Locklin
- College of Engineering , University of Georgia , Athens , Georgia 30602 , United States
- Department of Chemistry , University of Georgia , Athens , Georgia 30602 , United States
- New Materials Institute , University of Georgia , Athens , Georgia 30602 , United States
| | - Jenna R Jambeck
- College of Engineering , University of Georgia , Athens , Georgia 30602 , United States
- New Materials Institute , University of Georgia , Athens , Georgia 30602 , United States
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15
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Microbiome analysis and -omics studies of microbial denitrification processes in wastewater treatment: recent advances. SCIENCE CHINA-LIFE SCIENCES 2018; 61:753-761. [DOI: 10.1007/s11427-017-9228-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Accepted: 11/22/2017] [Indexed: 10/18/2022]
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16
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Chen Y, Lan S, Wang L, Dong S, Zhou H, Tan Z, Li X. A review: Driving factors and regulation strategies of microbial community structure and dynamics in wastewater treatment systems. CHEMOSPHERE 2017; 174:173-182. [PMID: 28161518 DOI: 10.1016/j.chemosphere.2017.01.129] [Citation(s) in RCA: 74] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Revised: 01/24/2017] [Accepted: 01/25/2017] [Indexed: 06/06/2023]
Abstract
The performance and stabilization of biological wastewater treatment systems 1are closely related to the microbial community structure and dynamics. In this paper, the effects and mechanisms of influent composition, process configuration, operating parameters (dissolved oxygen [DO], pH, hydraulic retention time [HRT] and sludge retention time [SRT]) and environmental condition (temperature) to the change of microbial community structure and process performance (nitrification, denitrification, biological phosphorus removal, organics mineralization and utilization, etc.) are critically reviewed. Furthermore, some strategies for microbial community structure regulation, mainly bioaugmentation, process adjustment and operating parameters optimization, applied in the current wastewater treatment systems are also discussed. Although the recent studies have strengthened our understanding on the relationship between microbial community structure and wastewater treatment process performance, how to fully tap the microbial information, optimize the microbial community structure and maintain the process performance in wastewater treatment systems are still full of challenges.
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Affiliation(s)
- Yangwu Chen
- Key Laboratory of Environmental and Applied Microbiology, Chengdu Institute of Biology, Chinese Academy of Sciences, 610041, Chengdu, PR China; Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, 610041, Chengdu, PR China; University of Chinese Academy of Sciences, 100049, Beijing, PR China
| | - Shuhuan Lan
- Key Laboratory of Environmental and Applied Microbiology, Chengdu Institute of Biology, Chinese Academy of Sciences, 610041, Chengdu, PR China; Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, 610041, Chengdu, PR China
| | - Longhui Wang
- Key Laboratory of Environmental and Applied Microbiology, Chengdu Institute of Biology, Chinese Academy of Sciences, 610041, Chengdu, PR China; Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, 610041, Chengdu, PR China
| | - Shiyang Dong
- Key Laboratory of Environmental and Applied Microbiology, Chengdu Institute of Biology, Chinese Academy of Sciences, 610041, Chengdu, PR China; Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, 610041, Chengdu, PR China; University of Chinese Academy of Sciences, 100049, Beijing, PR China
| | - Houzhen Zhou
- Key Laboratory of Environmental and Applied Microbiology, Chengdu Institute of Biology, Chinese Academy of Sciences, 610041, Chengdu, PR China; Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, 610041, Chengdu, PR China
| | - Zhouliang Tan
- Key Laboratory of Environmental and Applied Microbiology, Chengdu Institute of Biology, Chinese Academy of Sciences, 610041, Chengdu, PR China; Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, 610041, Chengdu, PR China.
| | - Xudong Li
- Key Laboratory of Environmental and Applied Microbiology, Chengdu Institute of Biology, Chinese Academy of Sciences, 610041, Chengdu, PR China; Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, 610041, Chengdu, PR China
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17
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Sul WJ, Kim IS, Ekpeghere KI, Song B, Kim BS, Kim HG, Kim JT, Koh SC. Metagenomic insight of nitrogen metabolism in a tannery wastewater treatment plant bioaugmented with the microbial consortium BM-S-1. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 2016; 51:1164-1172. [PMID: 27471001 DOI: 10.1080/10934529.2016.1206387] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Nitrogen (N) removal in a tannery wastewater treatment plant was significantly enhanced by the bioaugmentation of the novel consortium BM-S-1. In order to identify dominant taxa responsible for N metabolisms in the different stages of the treatment process, Illumina MiSeq Sequencer was used to conduct metagenome sequencing of the microbial communities in the different stages of treatment system, including influent (I), buffering (B), primary aeration (PA), secondary aeration (SA) and sludge digestion (SD). Based on MG-RAST analysis, the dominant phyla were Proteobacteria, Bacteroidetes and Firmicutes in B, PA, SA and SD, whereas Firmicutes was the most dominant in I before augmentation. The augmentation increased the abundance of the denitrification genes found in the genera such as Ralstonia (nirS, norB and nosZ), Pseudomonas (narG, nirS and norB) and Escherichia (narG) in B and PA. In addition, Bacteroides, Geobacter, Porphyromonasand Wolinella carrying nrfA gene encoding dissimilatory nitrate reduction to ammonium were abundantly present in B and PA. This was corroborated with the higher total N removal in these two stages. Thus, metagenomic analysis was able to identify the dominant taxa responsible for dissimilatory N metabolisms in the tannery wastewater treatment system undergoing bioaugmentation. This metagenomic insight into the nitrogen metabolism will contribute to a successful monitoring and operation of the eco-friendly tannery wastewater treatment system.
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Affiliation(s)
- Woo-Jun Sul
- a Department of Systems Biotechnology , Chung-Ang University , Anseong , South Korea
| | - In-Soo Kim
- b Department of Environmental Engineering , Korea Maritime and Ocean University , Busan , South Korea
| | - Kalu I Ekpeghere
- b Department of Environmental Engineering , Korea Maritime and Ocean University , Busan , South Korea
| | - Bongkeun Song
- c Department of Biological Sciences , Viginia Institute of Marine Science , Gloucester Point , Virginia , USA
- d Department of Life Science , Dongguk University-Seoul , Junggu , Seoul , South Korea
| | - Bong-Soo Kim
- e Department of Life Science , Hallym University , Chuncheon , South Korea
| | | | | | - Sung-Cheol Koh
- b Department of Environmental Engineering , Korea Maritime and Ocean University , Busan , South Korea
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18
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Feng Q, Song YC, Bae BU. Influence of applied voltage on the performance of bioelectrochemical anaerobic digestion of sewage sludge and planktonic microbial communities at ambient temperature. BIORESOURCE TECHNOLOGY 2016; 220:500-508. [PMID: 27611033 DOI: 10.1016/j.biortech.2016.08.085] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2016] [Revised: 08/21/2016] [Accepted: 08/22/2016] [Indexed: 06/06/2023]
Abstract
The influence of applied voltage on the bioelectrochemical anaerobic digestion of sewage sludge was studied at ambient temperature (25±2°C). The stability of the bioelectrochemical anaerobic digestion was considerably good in terms of pH, alkalinity and VFAs at 0.3V and 0.5V, but VFA accumulation occurred at 0.7V. The specific methane production rate (370mLCH4/L.d) was the highest at 0.3V, but the methane content (80.6%) in biogas and the methane yield (350mLCH4/gCODr) were higher at 0.5V, significantly better than those of 0.7V. The VS removal efficiency was 64-66% at 0.3V and 0.5V, but only 31% at 0.7V. The dominant species of planktonic microbial communities was Cloacamonas at 0.3V and 0.5V, but the percentage of hydrolytic bacteria species such as Saprospiraceae, Fimbriimonas, and Ottowia pentelensis was much higher at 0.7V. The optimal applied voltage for bioelectrochemical anaerobic digestion was 0.3-0.5V according to digestion performance and planktonic microbial communities.
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Affiliation(s)
- Qing Feng
- Department of Environmental Engineering, Korea Maritime and Ocean University, Busan 49112, South Korea
| | - Young-Chae Song
- Department of Environmental Engineering, Korea Maritime and Ocean University, Busan 49112, South Korea.
| | - Byung-Uk Bae
- Department of Environmental Engineering, Daejeon University, Daejeon 300-716, South Korea
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19
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Chon K, Lee K, Kim IS, Jang A. Performance assessment of a submerged membrane bioreactor using a novel microbial consortium. BIORESOURCE TECHNOLOGY 2016; 210:2-10. [PMID: 26776149 DOI: 10.1016/j.biortech.2016.01.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2015] [Revised: 01/01/2016] [Accepted: 01/05/2016] [Indexed: 06/05/2023]
Abstract
The performance of a submerged membrane bioreactor (MBR) with and without a novel microbial consortium (NMBR vs. CMBR) was compared to provide deeper insights into the effects of changes in water quality and dissolved organic matter (DOM) characteristics by a novel microbial consortium on the fouling characteristics of MBR processes. Despite similar operating conditions and identical DOM properties in the feed waters, NMBR exhibited a lower propensity to release polysaccharide-like compounds with low molecular weight by bacterial activities compared to CMBR. These compounds have a great fouling potential for MBR processes. Therefore, an increase in the transmembrane pressure (TMP) of NMBR (normalized TMP (TMP/TMP0): 1.14) was much slower and less significant than that observed in CMBR (TMP/TMP0: 2.61). These observations imply that the novel microbial consortium can efficiently mitigate membrane fouling by hydrophilic DOM in MBR processes.
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Affiliation(s)
- Kangmin Chon
- Jeju Global Research Center (JGRC), Korea Institute of Energy Research (KIER), 200 Haemajihaean-ro, Gujwa-eup, Jeju-si, Jeju-do 63357, Republic of Korea
| | - Kyungpyo Lee
- School of Water Resources, Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do 16419, Republic of Korea
| | - In-Soo Kim
- Department of Environmental Engineering, Korea Maritime and Ocean University, 727 Taejong-ro, Yeongdo-gu, Busan 49112, Republic of Korea
| | - Am Jang
- School of Water Resources, Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do 16419, Republic of Korea.
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20
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Park S, Cui F, Mo K, Kim M. Mathematical models and bacterial communities for ammonia toxicity in mesophilic anaerobes not acclimated to high concentrations of ammonia. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2016; 74:935-942. [PMID: 27533868 DOI: 10.2166/wst.2016.274] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
In this study, we evaluated ammonia toxicity in mesophilic anaerobic digestion at various pH values and total ammonia nitrogen (TAN) concentrations. We performed anaerobic toxicity assays (ATAs) to evaluate the toxicity effects of TAN and pH on mesophilic anaerobic digestion. Modeling based on the results of the ATAs indicated that the specific methanogenic activity (SMA) decreased by 30% at a TAN concentration higher than 3.0 g/L compared to a TAN concentration of 0 g/L. In addition, the highest SMA for a given TAN level (0.5-10.0 g/L) was observed at a pH of around 7.6. The results of bacterial community analyses showed that the diversity and richness of microorganisms with increasing TAN concentration were decreased. Chloroflexi and Synergistetes were the dominant phyla at TAN concentrations less than 3.0 g/L, and Firmicutes was the dominant phylum at TAN concentrations higher than 3.0 g/L, implying that the ammonia toxicity concentration may influence the kind of dominant species. In conclusion, to start a stable mesophilic anaerobic digestion concerning ammonia toxicity, a TAN concentration less than 3.0 g/L is preferable.
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Affiliation(s)
- Seyong Park
- Plant Engineering Center, Institute for Advanced Engineering, 51 Goan-ro, Yongin City, Kyeonggido 175-28, Republic of Korea; Department of Civil & Environmental Engineering, Hanyang University, 55 Hanyangdaehak-ro, Ansan City, Kyeonggido 155-88, Republic of Korea E-mail:
| | - Fenghao Cui
- Department of Civil & Environmental Engineering, Hanyang University, 55 Hanyangdaehak-ro, Ansan City, Kyeonggido 155-88, Republic of Korea E-mail:
| | - Kyung Mo
- Department of Civil & Environmental Engineering, Hanyang University, 55 Hanyangdaehak-ro, Ansan City, Kyeonggido 155-88, Republic of Korea E-mail:
| | - Moonil Kim
- Department of Civil & Environmental Engineering, Hanyang University, 55 Hanyangdaehak-ro, Ansan City, Kyeonggido 155-88, Republic of Korea E-mail:
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21
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Huang G, Fan G, Liu G. Enhanced treatment of tannery wastewater in an integrated multistage bioreactor (IMBR) by the predominant bacterial strains enriched from marine sediments. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2016; 73:807-817. [PMID: 26901723 DOI: 10.2166/wst.2015.548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
An innovative integrated multistage bioreactor (IMBR) system, which was augmented with three predominant bacterial strains (Lactobacillus paracasei CL1107, Pichia jadinii CL1705, and Serratia marcescens CL1502) isolated from marine sediments, was developed to treat real tannery wastewater without performing physicochemical pretreatment, with the potential to reduce the generation of waste sludge and odors. The performance of the IMBR treatment system, with and without the inclusion of the predominant bacterial strains, was compared. The results indicated that the performance of the IMBR system without bioaugmentation by the predominant bacterial strains was poor. However, when in the presence of the predominant bacterial strains, the IMBR system exhibited high removal efficiencies of chemical oxygen demand (COD) (97%), NH4(+)-N (97.7%), and total nitrogen (TN) (90%). In addition, the system had the capacity for the simultaneous removal of organics and nitrogen, heterotrophic nitrification and denitrification being carried out concurrently, thereby avoiding the strong inhibition of high concentrations of COD on nitrification. The system possessed excellent adaptability and ability to resist influent loading fluctuations, and had a good alkalinity balance such that it could achieve a high NH4(+)-N, and TN removal efficiency without a supplement of external alkalinity. In addition, an empirical performance modeling of the IMBR system was analyzed.
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Affiliation(s)
- Guangdao Huang
- School of Environment, Henan Normal University, Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Xinxiang, Henan 453007, China E-mail: ; Environmental Protection & Design institute, Huaqiao University, Quanzhou, Fujian 362021, China
| | - Guofeng Fan
- Environmental Protection & Design institute, Huaqiao University, Quanzhou, Fujian 362021, China
| | - Guoguang Liu
- School of Environment, Henan Normal University, Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Xinxiang, Henan 453007, China E-mail:
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Subha B, Song YC, Woo JH. Optimization of biostimulant for bioremediation of contaminated coastal sediment by response surface methodology (RSM) and evaluation of microbial diversity by pyrosequencing. MARINE POLLUTION BULLETIN 2015; 98:235-246. [PMID: 26139459 DOI: 10.1016/j.marpolbul.2015.06.042] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2015] [Revised: 06/10/2015] [Accepted: 06/24/2015] [Indexed: 06/04/2023]
Abstract
The present study aims to optimize the slow release biostimulant ball (BSB) for bioremediation of contaminated coastal sediment using response surface methodology (RSM). Different bacterial communities were evaluated using a pyrosequencing-based approach in contaminated coastal sediments. The effects of BSB size (1-5cm), distance (1-10cm) and time (1-4months) on changes in chemical oxygen demand (COD) and volatile solid (VS) reduction were determined. Maximum reductions of COD and VS, 89.7% and 78.8%, respectively, were observed at a 3cm ball size, 5.5cm distance and 4months; these values are the optimum conditions for effective treatment of contaminated coastal sediment. Most of the variance in COD and VS (0.9291 and 0.9369, respectively) was explained in our chosen models. BSB is a promising method for COD and VS reduction and enhancement of SRB diversity.
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Affiliation(s)
- Bakthavachallam Subha
- Department of Environmental Engineering, Korea Maritime and Ocean University, Busan, South Korea
| | - Young Chae Song
- Department of Environmental Engineering, Korea Maritime and Ocean University, Busan, South Korea.
| | - Jung Hui Woo
- Nuclear Power Equipment Research Center, Korea Maritime and Ocean University, Busan, South Korea
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Zhang Y, Chen L, Sun R, Dai T, Tian J, Liu R, Wen D. Effect of wastewater disposal on the bacterial and archaeal community of sea sediment in an industrial area in China. FEMS Microbiol Ecol 2014; 88:320-32. [DOI: 10.1111/1574-6941.12298] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2013] [Revised: 02/03/2014] [Accepted: 02/04/2014] [Indexed: 11/26/2022] Open
Affiliation(s)
- Yan Zhang
- School of Environment; Tsinghua University; Beijing China
| | - Lujun Chen
- School of Environment; Tsinghua University; Beijing China
- Zhejiang Provincial Key Laboratory of Water Science and Technology; Department of Environmental Technology and Ecology; Yangtze Delta Region Institute of Tsinghua University; Zhejiang Jiaxing China
| | - Renhua Sun
- College of Environmental Sciences and Engineering; Peking University; Beijing China
| | - Tianjiao Dai
- College of Environmental Sciences and Engineering; Peking University; Beijing China
| | - Jinping Tian
- School of Environment; Tsinghua University; Beijing China
| | - Rui Liu
- Zhejiang Provincial Key Laboratory of Water Science and Technology; Department of Environmental Technology and Ecology; Yangtze Delta Region Institute of Tsinghua University; Zhejiang Jiaxing China
| | - Donghui Wen
- College of Environmental Sciences and Engineering; Peking University; Beijing China
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