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Luo E, Ouyang J, Zhang X, Lu Q, Wei D, Wang Y, Cha Z, Ye C, Li CY, Wei L. Study on the enhancement of low carbon-to-nitrogen ratio urban wastewater pollutant removal efficiency by adding sulfur electron acceptors. PLoS One 2024; 19:e0310222. [PMID: 39446715 PMCID: PMC11500869 DOI: 10.1371/journal.pone.0310222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Accepted: 08/27/2024] [Indexed: 10/26/2024] Open
Abstract
The effective elimination of nitrogen and phosphorus in urban sewage treatment was always hindered by the deficiency of organic carbon in the low C/N ratio wastewater. To overcome this organic-dependent barrier and investigate community changes after sulfur electron addition. In this study, we conducted a simulated urban wastewater treatment plant (WWTP) bioreactor by using sodium sulfate as an electron acceptor to explore the removal efficiency of characteristic pollutants before and after the addition of sulfur electron acceptor. In the actual operation of 90 days, the removal rate of sulfur electrons' chemical oxygen demand (COD), ammonia nitrogen, and total phosphorus (TP) with sulfur electrons increased to 94.0%, 92.1% and 74%, respectively, compared with before the addition of sulfur electron acceptor. Compared with no added sulfur(phase I), the reactor after adding sulfur electron acceptor(phase II) was demonstrated more robust in nitrogen removal in the case of low C/N influent. the effluent ammonia nitrogen concentration of the aerobic reactor in Pahse II was kept lower than 1.844 mg N / L after day 40 and the overall concentration of total phosphorus in phase II (0.35 mg P/L) was lower than that of phase I(0.76 mg P/L). The microbial community analysis indicates that Rhodanobacter, Bacteroidetes, and Thiobacillus, which were the predominant bacteria in the reactor, may play a crucial role in inorganic nitrogen removal, complex organic degradation, and autotrophic denitrification under the stress of low carbon and nitrogen ratios. This leads to the formation of a distinctive microbial community structure influenced by the sulfur electron receptor and its composition. This study contributes to further development of urban low-carbon-nitrogen ratio wastewater efficient and low-cost wastewater treatment technology.
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Affiliation(s)
- Erming Luo
- Guangzhou HKUST Fok Ying Tung Research Institute, Guang Zhou, China
| | - Jia Ouyang
- Guangzhou HKUST Fok Ying Tung Research Institute, Guang Zhou, China
| | - Xinxin Zhang
- Guangzhou HKUST Fok Ying Tung Research Institute, Guang Zhou, China
| | - Qian Lu
- Guangzhou HKUST Fok Ying Tung Research Institute, Guang Zhou, China
| | - Dong Wei
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, Heilongjiang Province, China
- College of Life Sciences, Northeast Forestry University, Harbin, Heilongjiang, China
| | - Yongcheng Wang
- Guangzhou COSMO Environment Technology CO.,LTD, Guang Zhou, China
| | - Zhengjiong Cha
- Guangzhou COSMO Environment Technology CO.,LTD, Guang Zhou, China
| | - Chengwei Ye
- Guangzhou COSMO Environment Technology CO.,LTD, Guang Zhou, China
| | - Chun ying Li
- School of Energy and Civil Engineering, Harbin University of Commerce, Harbin, China
| | - Li Wei
- Guangzhou HKUST Fok Ying Tung Research Institute, Guang Zhou, China
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, Heilongjiang Province, China
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Zhang G, Li W, Li D, Wang S, Lv L. Start-up of glycerol-driven denitrifying phosphorus removal from wastewater: The effects of the microaerobic environment. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 366:121870. [PMID: 39032251 DOI: 10.1016/j.jenvman.2024.121870] [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: 03/29/2024] [Revised: 06/28/2024] [Accepted: 07/12/2024] [Indexed: 07/23/2024]
Abstract
Glycerol, an abundant by-product of biodiesel production, represented a promising carbon source for enhancing nutrient removal from low C/N ratio wastewater. This study discovered a novel approach to initiate glycerol-driven denitrifying phosphorus removal (DPR) in situ by creating a short-term microaerobic environment within the aerobic zone. This approach facilitated the in-situ conversion of glycerol, which was subsequently utilized by denitrifying phosphate accumulating organisms (DPAOs) for DPR. The feasibility and stability of glycerol-driven DPR were validated in a continuous-flow pilot-scale reactor. Anaerobic phosphorus release increased from 1.0 mg/L/h to 2.5 mg/L/h, with fermentation bacteria and related functional genes showing significant increases. The stable stage exhibited 92.8% phosphorus removal efficiency and 55.5% DPR percentage. The microaerobic environment enhanced fermentation bacteria enrichment, crucial for glycerol-driven DPR stability. The collaborative interaction between fermentation bacteria and phosphate accumulating organisms (PAOs) played a key role in sustaining glycerol-driven DPR stability. These findings provide a robust theoretical foundation for applying glycerol-driven DPR in established wastewater treatment plants.
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Affiliation(s)
- Guanglin Zhang
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China; School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Weiguang Li
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China; School of Environment, Harbin Institute of Technology, Harbin 150090, China.
| | - Donghui Li
- School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Shuncai Wang
- School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Longyi Lv
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China; Tianjin Key Laboratory of Clean Energy and Pollution Control, School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China.
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Zhang X, Li X, Sun S, Wang P, Ma X, Hou R, Liang X. Anti-Tumor Metastasis via Platelet Inhibitor Combined with Photothermal Therapy under Activatable Fluorescence/Magnetic Resonance Bimodal Imaging Guidance. ACS APPLIED MATERIALS & INTERFACES 2021; 13:19679-19694. [PMID: 33876926 DOI: 10.1021/acsami.1c02302] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Photothermal therapy (PTT) is a promising tumor therapy strategy; however, heterogeneous heat distribution over the tumor often exists, resulting in insufficient photothermal ablation and potential risk of cancer metastasis, which has been demonstrated to be associate with platelets. Herein, a near-infrared (NIR) photothermal agent of IR780 was conjugated with MRI agent of Gd-DOTA via a disulfide linkage (ICD-Gd), which was coassembly with lipid connecting tumor-homing pentapeptide CREKA (Cys-Arg-Glu-Lys-Ala) (DSPE-PEG-CREKA) to encapsulate a platelet inhibitor of ticagrelor (Tic), affording a multistimuli-responsive nanosystem (DPC@ICD-Gd-Tic). The nanosystem with completely quenching fluorescence could specifically target the tumor-associated platelets and showed pH/reduction/NIR light-responsive drug release, which simultaneously resulting in dis-assembly of nanoparticle and fluorescence recovery, enabling the drug delivery visualization in tumor in situ via activatable NIR fluorescence/MR bimodal imaging. Finally, DPC@ICD-Gd-Tic further integrated the photoinduced hyperthermia and platelet function inhibitor to achieve synergistic anticancer therapy, leading to ablation of primary tumor cells and effectively suppressed their distant metastasis. The number of lung metastases in 4T1 tumor bearing mice was reduced by about 90%, and the size of tumor was reduced by about 70%, while half of the mouse was completely cured by this smart nanosystem.
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Affiliation(s)
- Xu Zhang
- Department of Ultrasound, Peking University Third Hospital, Beijing 100191, P. R. China
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, School of Medicine, Northwest University, Xi'an 710069, P. R. China
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety and CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology of China, University of Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Xiaoda Li
- School of Basic Medical Sciences, Peking University, Beijing 100190, P. R. China
| | - Suhui Sun
- Department of Ultrasound, Peking University Third Hospital, Beijing 100191, P. R. China
| | - Ping Wang
- Department of Ultrasound, Peking University Third Hospital, Beijing 100191, P. R. China
| | - Xiaotu Ma
- Department of Ultrasound, Peking University Third Hospital, Beijing 100191, P. R. China
| | - Rui Hou
- Department of Ultrasound, Peking University Third Hospital, Beijing 100191, P. R. China
| | - Xiaolong Liang
- Department of Ultrasound, Peking University Third Hospital, Beijing 100191, P. R. China
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4
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Wang D, Tooker NB, Srinivasan V, Li G, Fernandez LA, Schauer P, Menniti A, Maher C, Bott CB, Dombrowski P, Barnard JL, Onnis-Hayden A, Gu AZ. Side-stream enhanced biological phosphorus removal (S2EBPR) process improves system performance - A full-scale comparative study. WATER RESEARCH 2019; 167:115109. [PMID: 31585384 DOI: 10.1016/j.watres.2019.115109] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Revised: 08/30/2019] [Accepted: 09/21/2019] [Indexed: 06/10/2023]
Abstract
To address the common challenges in enhanced biological phosphorus removal (EBPR) related to stability and unfavorable influent carbon to phosphorus ratio, a side-stream EBPR (S2EBPR) process that involves a side-stream anaerobic biological sludge hydrolysis and fermentation reactor was proposed as an emerging alternative. In this study, a full-scale pilot testing was performed with side-by-side operation of a conventional anaerobic-anoxic-aerobic (A2O) process versus a S2EBPR process. A comparison of the performance, activity and microbial community between the two configurations was performed. The results demonstrated that, with the same influent wastewater characteristics, S2EBPR configuration showed improved P removal performance and stability than the conventional A2O configuration, especially when the mixers in the side-stream anaerobic reactor were operated intermittently. Mass balance analysis illustrated that both denitrification and EBPR were enhanced in S2EBPR configuration, where return activated sludge was diverted into the anaerobic zone to promote fermentation and enrichment of polyphosphate accumulating organisms (PAOs), and the influent was bypassed to the anoxic zone for enhancing denitrification. A relatively higher PAO activity and total PAO abundance were observed in S2EBPR than in A2O configuration, accompanied by a higher degree of dependence on glycolysis pathway than tricarboxylic acid cycle. No significant difference in the relative abundances of putative PAOs, including Ca. Accumulibacter and Tetrasphaera, were observed between the two configurations. However, higher microbial community diversity indices were observed in S2EBPR configuration than in conventional one. In addition, consistently lower relative abundance of known glycogen accumulating organisms (GAOs) was observed in S2EBPR system. Extended anaerobic retention time and conditions that generate continuous and more complex volatile fatty acids in the side-stream anaerobic reactor of S2EBPR process likely give more competitive advantage for PAOs over GAOs. PAOs exhibited sustained EBPR activity and delayed decay under extended anaerobic condition, likely due to their versatile metabolic pathways depending on the availability and utilization of multiple intracellular polymers. This study provided new insights into the effects of implementing side-stream EBPR configuration on microbial populations, EBPR activity profiles and resulted system performance.
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Affiliation(s)
- Dongqi Wang
- State Key Laboratory of Eco-hydraulics in Northwest Arid Region, Xi'an University of Technology, Xi'an, Shaanxi, 710048, China; Department of Civil and Environmental Engineering, Northeastern University, 360 Huntington Avenue, Boston, MA, 02115, United States.
| | - Nicholas B Tooker
- Department of Civil and Environmental Engineering, Northeastern University, 360 Huntington Avenue, Boston, MA, 02115, United States
| | - Varun Srinivasan
- Department of Civil and Environmental Engineering, Northeastern University, 360 Huntington Avenue, Boston, MA, 02115, United States
| | - Guangyu Li
- Department of Civil and Environmental Engineering, Northeastern University, 360 Huntington Avenue, Boston, MA, 02115, United States
| | - Loretta A Fernandez
- Department of Civil and Environmental Engineering, Northeastern University, 360 Huntington Avenue, Boston, MA, 02115, United States
| | - Peter Schauer
- Clean Water Services, 16060 SW 85th Avenue, Tigard, OR, 97224, United States
| | - Adrienne Menniti
- Clean Water Services, 16060 SW 85th Avenue, Tigard, OR, 97224, United States
| | - Chris Maher
- Clean Water Services, 16060 SW 85th Avenue, Tigard, OR, 97224, United States
| | - Charles B Bott
- Hampton Roads Sanitation District, 1434 Air Rail Avenue, Virginia Beach, VA, 23454, United States
| | - Paul Dombrowski
- Woodard & Curran, Inc., 1699 King Street, Enfield, CT, 06082, United States
| | - James L Barnard
- Black & Veatch, 8400 Ward Parkway, Kansas City, MO, 64114, United States
| | - Annalisa Onnis-Hayden
- Department of Civil and Environmental Engineering, Northeastern University, 360 Huntington Avenue, Boston, MA, 02115, United States
| | - April Z Gu
- Department of Civil and Environmental Engineering, Northeastern University, 360 Huntington Avenue, Boston, MA, 02115, United States; School of Civil and Environmental Engineering, Cornell University, 220 Hollister Hall, Ithaca, NY, 14853, United States.
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5
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Zhang X, Liang X, Ma X, Hou R, Li X, Wang F. Highly stable near-infrared dye conjugated cerasomes for fluorescence imaging-guided synergistic chemo-photothermal therapy of colorectal cancer. Biomater Sci 2019; 7:2873-2888. [DOI: 10.1039/c9bm00458k] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Dye-conjugated cerasome loaded with DOX exhibited high stability and controllable drug release, holding great promise in colorectal cancer photothermal chemotherapy.
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Affiliation(s)
- Xu Zhang
- Medical Isotopes Research Center and Department of Radiation Medicine
- School of Basic Medical Sciences
- Peking University Health Science Center
- Beijing
- China
| | - Xiaolong Liang
- Department of Ultrasound
- Peking University Third Hospital
- Beijing
- China
| | - Xiaotu Ma
- Key Laboratory of Protein and Peptide Pharmaceuticals
- CAS Center for Excellence in Biomacromolecules
- Institute of Biophysics
- Chinese Academy of Sciences
- Beijing
| | - Rui Hou
- Medical Isotopes Research Center and Department of Radiation Medicine
- School of Basic Medical Sciences
- Peking University Health Science Center
- Beijing
- China
| | - Xiaoda Li
- Medical Isotopes Research Center and Department of Radiation Medicine
- School of Basic Medical Sciences
- Peking University Health Science Center
- Beijing
- China
| | - Fan Wang
- Medical Isotopes Research Center and Department of Radiation Medicine
- School of Basic Medical Sciences
- Peking University Health Science Center
- Beijing
- China
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Liu H, Han P, Liu H, Zhou G, Fu B, Zheng Z. Full-scale production of VFAs from sewage sludge by anaerobic alkaline fermentation to improve biological nutrients removal in domestic wastewater. BIORESOURCE TECHNOLOGY 2018; 260:105-114. [PMID: 29625281 DOI: 10.1016/j.biortech.2018.03.105] [Citation(s) in RCA: 113] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Revised: 03/21/2018] [Accepted: 03/23/2018] [Indexed: 05/28/2023]
Abstract
A full-scale project of thermal-alkaline pretreatment and alkaline fermentation of sewage sludge was built to produce volatile fatty acids (VFAs) which was then used as external carbon source for improving biological nitrogen and phosphorus removals (BNPR) in wastewater plant. Results showed this project had efficient and stable performances in VFA production, sludge reduce and BNPR. Hydrolysis rate in pretreatment, VFAs yield in fermentation and total VS reduction reached 68.7%, 261.32 mg COD/g VSS and 54.19%, respectively. Moreover, fermentation liquid with VFA presented similar efficiency as acetic acid in enhancing BNPR, obtaining removal efficiencies of nitrogen and phosphorus up to 72.39% and 89.65%, respectively. Finally, the project also presented greater economic advantage than traditional processes, and the net profits for VFAs and biogas productions are 9.12 and 3.71 USD/m3 sludge, respectively. Long-term operation indicated that anaerobic alkaline fermentation for VFAs production is technically and economically feasible for sludge carbon recovery.
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Affiliation(s)
- He Liu
- Jiangsu Key Laboratory of Anaerobic Biotechnology, School of Environmental and Civil Engineering, Jiangnan University, 214122 Wuxi, PR China; Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Suzhou 215011, PR China
| | - Peng Han
- Jiangsu Key Laboratory of Anaerobic Biotechnology, School of Environmental and Civil Engineering, Jiangnan University, 214122 Wuxi, PR China
| | - Hongbo Liu
- Jiangsu Key Laboratory of Anaerobic Biotechnology, School of Environmental and Civil Engineering, Jiangnan University, 214122 Wuxi, PR China; Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Suzhou 215011, PR China.
| | - Guangjie Zhou
- Jiangsu Key Laboratory of Anaerobic Biotechnology, School of Environmental and Civil Engineering, Jiangnan University, 214122 Wuxi, PR China
| | - Bo Fu
- Jiangsu Key Laboratory of Anaerobic Biotechnology, School of Environmental and Civil Engineering, Jiangnan University, 214122 Wuxi, PR China; Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Suzhou 215011, PR China
| | - Zhiyong Zheng
- Jiangsu Key Laboratory of Anaerobic Biotechnology, School of Environmental and Civil Engineering, Jiangnan University, 214122 Wuxi, PR China
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Montiel-Jarillo G, Carrera J, Suárez-Ojeda ME. Enrichment of a mixed microbial culture for polyhydroxyalkanoates production: Effect of pH and N and P concentrations. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 583:300-307. [PMID: 28117150 DOI: 10.1016/j.scitotenv.2017.01.069] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2016] [Revised: 01/03/2017] [Accepted: 01/11/2017] [Indexed: 06/06/2023]
Abstract
Polyhydroxyalkanoates (PHA) are biopolymers that can be an alternative against conventional plastics. The study reported herein evaluated the enrichment of a mixed microbial culture (MMC) operated under feast/famine regime and different pHs in a sequencing batch reactor (SBR) using acetate as sole carbon source to produce polyhydroxyalkanoates (PHAs). The enrichment step was evaluated at controlled pH of 7.5 and also without pH control (averaged value of 9.0). The acetate uptake rate (-qS) of both enrichments at the end of the experimental period exhibited similar behaviour being about 0.18CmolAcCmolX-1h-1 and 0.19CmolAcCmolX-1h-1 for SBR-A and SBR-B, respectively. However, the PHA-storing capacity of the biomass enriched without pH control was better, exhibiting a maximum PHA content of 36% (gPHAg-1 VSS) with a PHA production rate (qPHA) of 0.16CmolPHACmolX-1h-1. Batch experiments were performed to evaluate PHA-storing capacity of the enriched culture at different pHs and nutrients concentrations. In the pH experiments (without nutrient limitation), it was found that in the absence of controlled pH, the enriched biomass exhibited a PHA content of 44% gPHAg-1 VSS with -qS and PHA to substrate yield (YPHA/Ac) of 0.57CmolAcCmolX-1h-1 and 0.33CmolPHACmolAc-1, respectively. Regarding the experiments at variable nutrients concentration (pH ranging 8.8 to 9.2), the results indicate that the PHA content in the enriched biomass is significantly higher being around 51% gPHAg-1 VSS under nitrogen limitation. This work demonstrated the feasibility of the enrichment of a MMC with PHA storage ability without pH control. Results also suggest that better PHAs contents and substrate uptake rates are obtained without controlling the pH in the accumulation step. Finally, this work also highlights the importance of understanding the role of nutrients concentration during the accumulation step.
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Affiliation(s)
- Gabriela Montiel-Jarillo
- GENOCOV Research Group, Departament d'Enginyeria Química, Biològica i Ambiental. Escola d'Enginyeria. Edifici Q, c/ de les Sitges S/N, Universitat Autònoma de Barcelona, 08193 Bellaterra (Barcelona), Spain
| | - Julián Carrera
- GENOCOV Research Group, Departament d'Enginyeria Química, Biològica i Ambiental. Escola d'Enginyeria. Edifici Q, c/ de les Sitges S/N, Universitat Autònoma de Barcelona, 08193 Bellaterra (Barcelona), Spain
| | - María Eugenia Suárez-Ojeda
- GENOCOV Research Group, Departament d'Enginyeria Química, Biològica i Ambiental. Escola d'Enginyeria. Edifici Q, c/ de les Sitges S/N, Universitat Autònoma de Barcelona, 08193 Bellaterra (Barcelona), Spain.
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Xie T, Mo C, Li X, Zhang J, An H, Yang Q, Wang D, Zhao J, Zhong Y, Zeng G. Effects of different ratios of glucose to acetate on phosphorus removal and microbial community of enhanced biological phosphorus removal (EBPR) system. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:4494-4505. [PMID: 27943155 DOI: 10.1007/s11356-016-7860-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Accepted: 10/06/2016] [Indexed: 05/24/2023]
Abstract
In this study, the effects of different ratios of glucose to acetate on enhanced biological phosphorus removal (EBPR) were investigated with regard to the changes of intercellular polyhydroxyalkanoates (PHAs) and glycogen, as well as microbial community. The experiments were carried out in five sequencing batch reactors (SBRs) fed with glucose and/or acetate as carbon sources at the ratios of 0:100 %, 25:75 %, 50:50 %, 75:25 %, and 100:0 %. The experimental results showed that a highest phosphorus removal efficiency of 96.3 % was obtained with a mixture of glucose and acetate at the ratio of 50:50 %, which should be attributed to more glycogen and polyhydroxyvalerate (PHV) transformation in this reactor during the anaerobic condition. PCR-denaturing gradient gel electrophoresis (DGGE) analysis of sludge samples taken from different anaerobic/aerobic (A/O) SBRs revealed that microbial community structures were distinctively different with a low similarity between each other.
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Affiliation(s)
- Ting Xie
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, China
- Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, China
| | - Chuangrong Mo
- School of Environment, Guangxi University, Nanning, 530004, China.
| | - Xiaoming Li
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, China.
- Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, China.
| | - Jian Zhang
- Guangxi University of Chinese Medicine, Nanning, 530200, China
| | - Hongxue An
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, China
- Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, China
| | - Qi Yang
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, China
- Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, China
| | - Dongbo Wang
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, China
- Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, China
| | - Jianwei Zhao
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, China
- Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, China
| | - Yu Zhong
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, China
- Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, China
| | - Guangming Zeng
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, China
- Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, China
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Trzcinski AP, Ganda L, Yan Ni AS, Kunacheva C, Qing ZD, Lin LL, Tao G, Lee Y, Ng WJ. Identification of recalcitrant compounds in a pilot-scale AB system: An adsorption (A) stage followed by a biological (B) stage to treat municipal wastewater. BIORESOURCE TECHNOLOGY 2016; 206:121-127. [PMID: 26851895 DOI: 10.1016/j.biortech.2016.01.048] [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: 11/14/2015] [Revised: 01/08/2016] [Accepted: 01/10/2016] [Indexed: 06/05/2023]
Abstract
This manuscript presents a comparison of the A-stage and B-stage sludges in terms of anaerobic biodegradability and low molecular weight compounds present in the supernatant using Gas Chromatography-Mass Spectrometry (GC-MS). The GC-MS analysis of A-stage and B-stage supernatants identified respectively 43 and 19 organic compounds consisting mainly of aromatics (27.9% and 21%), alcohols (25.6% and 15%) and acids (30.2% and 15%). The methane potential was found to be 349±1 mL CH4/g VS and 238±12 mL CH4/g VS, respectively. After anaerobic digestion of these sludges, a greater proportion of aromatics (42% and 58%) and a lower proportion of acids (10% and 10%) and alcohols (16% and 10%) was observed.
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Affiliation(s)
- Antoine Prandota Trzcinski
- Advanced Environmental Biotechnology Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, 1 Cleantech Loop, CleanTech One #06-08, Singapore 637141, Singapore
| | - Lily Ganda
- Advanced Environmental Biotechnology Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, 1 Cleantech Loop, CleanTech One #06-08, Singapore 637141, Singapore
| | - Annie Soh Yan Ni
- Advanced Environmental Biotechnology Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, 1 Cleantech Loop, CleanTech One #06-08, Singapore 637141, Singapore
| | - Chinagarn Kunacheva
- Advanced Environmental Biotechnology Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, 1 Cleantech Loop, CleanTech One #06-08, Singapore 637141, Singapore
| | - Zhang Dong Qing
- Advanced Environmental Biotechnology Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, 1 Cleantech Loop, CleanTech One #06-08, Singapore 637141, Singapore
| | - Li Leonard Lin
- Public Utilities Board, Water Reclamation (Plants) Department, 40 Scotts Road, #15-01, Singapore 228231, Singapore
| | - Guihe Tao
- Public Utilities Board, Water Reclamation (Plants) Department, 40 Scotts Road, #15-01, Singapore 228231, Singapore
| | - Yingjie Lee
- Public Utilities Board, Water Reclamation (Plants) Department, 40 Scotts Road, #15-01, Singapore 228231, Singapore
| | - Wun Jern Ng
- Advanced Environmental Biotechnology Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, 1 Cleantech Loop, CleanTech One #06-08, Singapore 637141, Singapore; Division of Environmental and Water Resources, School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore.
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