1
|
Jiao F, Zhang X, Zhang T, Hu Y, Lu R, Ma G, Chen T, Guo H, Li D, Pan Y, Li YY, Kong Z. Insights into carbon-neutral treatment of rural wastewater by constructed wetlands: A review of current development and future direction. ENVIRONMENTAL RESEARCH 2024:119796. [PMID: 39147183 DOI: 10.1016/j.envres.2024.119796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2024] [Revised: 07/27/2024] [Accepted: 08/12/2024] [Indexed: 08/17/2024]
Abstract
In recent years, with the global rise in awareness regarding carbon neutrality, the treatment of wastewater in rural areas is increasingly oriented towards energy conservation, emission reduction, low-carbon output, and resource utilization. This paper provides an analysis of the advantages and disadvantages of the current low-carbon treatment process of low-carbon treatment for rural wastewater. Constructed wetlands (CWs) are increasingly being considered as a viable option for treating wastewater in rural regions. In pursuit of carbon neutrality, advanced carbon-neutral bioprocesses are regarded as the prospective trajectory for achieving carbon-neutral treatment of rural wastewater. The incorporation of CWs with emerging biotechnologies such as sulfur-based autotrophic denitrification (SAD), pyrite-based autotrophic denitrification (PAD), and anaerobic ammonia oxidation (anammox) enables efficient removal of nitrogen and phosphorus from rural wastewater. The advancement of CWs towards improved removal of organic and inorganic pollutants, sustainability, minimal energy consumption, and low carbon emissions is widely recognized as a viable low-carbon approach for achieving carbon-neutral treatment of rural wastewater. This study offers novel perspectives on the sustainable development of wastewater treatment in rural areas within the framework of achieving carbon neutrality in the future.
Collapse
Affiliation(s)
- Feifei Jiao
- Suzhou National Joint Laboratory of Green and Low-carbon Wastewater Treatment and Resource Utilization, School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China; National and Local Joint Engineering Laboratory of Municipal Sewage Resource Utilization Technology, School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Xinzheng Zhang
- Suzhou National Joint Laboratory of Green and Low-carbon Wastewater Treatment and Resource Utilization, School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China; National and Local Joint Engineering Laboratory of Municipal Sewage Resource Utilization Technology, School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Tao Zhang
- College of Design and Innovation, Shanghai International College of Design & Innovation, Tongji University, Shanghai 200092, China
| | - Yong Hu
- School of Environmental Science and Engineering, Nanjing Tech University, Nanjing, 211816, China
| | - Rui Lu
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China
| | - Guangyi Ma
- Suzhou National Joint Laboratory of Green and Low-carbon Wastewater Treatment and Resource Utilization, School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China; National and Local Joint Engineering Laboratory of Municipal Sewage Resource Utilization Technology, School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Tao Chen
- Suzhou National Joint Laboratory of Green and Low-carbon Wastewater Treatment and Resource Utilization, School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China; National and Local Joint Engineering Laboratory of Municipal Sewage Resource Utilization Technology, School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Hongbo Guo
- Suzhou National Joint Laboratory of Green and Low-carbon Wastewater Treatment and Resource Utilization, School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China; National and Local Joint Engineering Laboratory of Municipal Sewage Resource Utilization Technology, School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Dapeng Li
- Suzhou National Joint Laboratory of Green and Low-carbon Wastewater Treatment and Resource Utilization, School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China; National and Local Joint Engineering Laboratory of Municipal Sewage Resource Utilization Technology, School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Yang Pan
- Suzhou National Joint Laboratory of Green and Low-carbon Wastewater Treatment and Resource Utilization, School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China; National and Local Joint Engineering Laboratory of Municipal Sewage Resource Utilization Technology, School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Yu-You Li
- Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aza-Aoba, Aramaki, Aoba Ward, Sendai, Miyagi 980-8579, Japan
| | - Zhe Kong
- Suzhou National Joint Laboratory of Green and Low-carbon Wastewater Treatment and Resource Utilization, School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China; National and Local Joint Engineering Laboratory of Municipal Sewage Resource Utilization Technology, School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China.
| |
Collapse
|
2
|
Zhou L, Li Z, Cheng B, Jiang J, Bi X, Wang Z, Chen G, Guo G. Long-term effects of thiosulfate on the competition between sulfur-mediated bacteria and glycogen accumulating organisms in sulfate-rich carbon-deficient wastewater. ENVIRONMENTAL RESEARCH 2024; 240:117596. [PMID: 37931736 DOI: 10.1016/j.envres.2023.117596] [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: 09/12/2023] [Revised: 11/01/2023] [Accepted: 11/02/2023] [Indexed: 11/08/2023]
Abstract
Sewage nutrient (e.g., nitrogen and phosphorus) biological removal performance is often limited by the deficient carbon source and undesirable glycogen accumulating organisms (GAOs), even in sulfate-containing wastewater. Thiosulfate (S2O32-) as a bioavailable, environmentally-benign, metastable and cost-effective agent has been regarded as electron carriers that induces high sulfur-mediated bacterial activity for nutrient removal from wastewater. In this study, the long-term effects of thiosulfate on the competition between sulfur-mediated bacteria (SMB, including sulfur-reducing bacteria (SRB) and sulfur-oxidizing bacteria (SOB)) and GAOs were explored to further close the gap of our knowledge on the control of GAOs under carbon deficient wastewater. Three reactors were continuously operated for over 100 days and were fed with 200 mg acetate-COD/L and 20 (R1), 50 (R2) and 80 (R3) mg S/L thiosulfate respectively. The results revealed that adding thiosulfate at the beginning of the anoxic phase promoted sulfur metabolism and increased the proliferation of SRB (mainly Desulfobacter) and SOB (mainly Chromatiaceae). Correspondingly, the relative abundance of GAOs (mainly Candidatus_Competibacter) decreased. After the carbon source was reduced, the abundance of GAOs increased and the competitive activity of SRB was weakened, resulting in the reduced sulfate reduction, which could be attributed to the fact that GAOs had a higher carbon source competitiveness than SRB under low carbon source conditions. While SOB maintained a high abundance due to the addition of thiosulfate as an additional electron donor, which enhanced the denitrification efficiency. Additionally, the dominant SOB shifted from Thiobacillus to Chromatiaceae during the long-term operation, indicating that Chromatiaceae had a higher competitive advantage for reduced sulfur (e.g., S2O32-, Polysulfide (Poly-S)) and nitrate compared to Thiobacillus. Furthermore, microbial functional genes revealed that S metabolism was enhanced during long-term operation. The potential mechanism and optimization strategy regarding the competition between sulfur-mediated bacteria and GAOs were revealed.
Collapse
Affiliation(s)
- Lichang Zhou
- School of Environmental Science and Engineering, Huazhong University of Science and Technology (HUST), Key Laboratory of Water and Wastewater Treatment (HUST), MOHURD, Wuhan, 430074, China
| | - Zhaoling Li
- School of Environmental Science and Engineering, Huazhong University of Science and Technology (HUST), Key Laboratory of Water and Wastewater Treatment (HUST), MOHURD, Wuhan, 430074, China
| | - Boyi Cheng
- School of Environmental Science and Engineering, Huazhong University of Science and Technology (HUST), Key Laboratory of Water and Wastewater Treatment (HUST), MOHURD, Wuhan, 430074, China
| | - Jinqi Jiang
- School of Environmental Science and Engineering, Huazhong University of Science and Technology (HUST), Key Laboratory of Water and Wastewater Treatment (HUST), MOHURD, Wuhan, 430074, China
| | - Xinqi Bi
- School of Environmental Science and Engineering, Huazhong University of Science and Technology (HUST), Key Laboratory of Water and Wastewater Treatment (HUST), MOHURD, Wuhan, 430074, China
| | - Zongping Wang
- School of Environmental Science and Engineering, Huazhong University of Science and Technology (HUST), Key Laboratory of Water and Wastewater Treatment (HUST), MOHURD, Wuhan, 430074, China
| | - Guanghao Chen
- Department of Civil & Environmental Engineering, The Hong Kong University of Science and Technology, Hong Kong, China
| | - Gang Guo
- School of Environmental Science and Engineering, Huazhong University of Science and Technology (HUST), Key Laboratory of Water and Wastewater Treatment (HUST), MOHURD, Wuhan, 430074, China.
| |
Collapse
|
3
|
Shao L, Wang D, Chen G, Zhao X, Fan L. Advance in the sulfur-based electron donor autotrophic denitrification for nitrate nitrogen removal from wastewater. World J Microbiol Biotechnol 2023; 40:7. [PMID: 37938419 DOI: 10.1007/s11274-023-03802-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2023] [Accepted: 10/09/2023] [Indexed: 11/09/2023]
Abstract
In the field of wastewater treatment, nitrate nitrogen (NO3--N) is one of the significant contaminants of concern. Sulfur autotrophic denitrification technology, which uses a variety of sulfur-based electron donors to reduce NO3--N to nitrogen (N2) through sulfur autotrophic denitrification bacteria, has emerged as a novel nitrogen removal technology to replace heterotrophic denitrification in the field of wastewater treatment due to its low cost, environmental friendliness, and high nitrogen removal efficiency. This paper reviews the advance of reduced sulfur compounds (such as elemental sulfur, sulfide, and thiosulfate) and iron sulfides (such as ferrous sulfide, pyrrhotite, and pyrite) electron donors for treating NO3--N in wastewater by sulfur autotrophic denitrification technology, including the dominant bacteria types and the sulfur autotrophic denitrification process based on various electron donors are introduced in detail, and their operating costs, nitrogen removal performance and impacts on the ecological environment are analyzed and compared. Moreover, the engineering applications of sulfur-based electron donor autotrophic denitrification technology were comprehensively summarized. According to the literature review, the focus of future industry research were discussed from several aspects as well, which would provide ideas for the application and optimization of the sulfur autotrophic denitrification process for deep and efficient removal of NO3--N in wastewater.
Collapse
Affiliation(s)
- Lixin Shao
- School of Mechanical Engineering, Shenyang University of Technology, Shenyang, 110870, China
| | - Dexi Wang
- School of Mechanical Engineering, Shenyang University of Technology, Shenyang, 110870, China
| | - Gong Chen
- School of Chemical Equipment, Shenyang University of Technology, Liaoyang, 111000, China
| | - Xibo Zhao
- Weihai Baike Environmental Protection Engineering Co., Ltd., Weihai, 264200, China
| | - Lihua Fan
- School of Chemical Equipment, Shenyang University of Technology, Liaoyang, 111000, China.
| |
Collapse
|
4
|
Yuan S, Zhong Q, Zhang H, Zhu W, Wang W, Li M, Tang X, Zhang S. The enrichment of more functional microbes induced by the increasing hydraulic retention time accounts for the increment of autotrophic denitrification performance. ENVIRONMENTAL RESEARCH 2023; 236:116848. [PMID: 37558114 DOI: 10.1016/j.envres.2023.116848] [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: 06/26/2023] [Revised: 07/27/2023] [Accepted: 08/06/2023] [Indexed: 08/11/2023]
Abstract
With pyrite (FeS2) and polycaprolactone (PCL) as electron donors, three denitrification systems, namely FeS2-based autotrophic denitrification (PAD) system, PCL-supported heterotrophic denitrification (PHD) system and split-mixotrophic denitrification (PPMD) system, were constructed and operated under varying hydraulic retention times (HRT, 1-48 h). Compared with PAD or PHD, the PPMD system could achieve higher removals of NO3--N and PO43--P, and the effluent SO42- concentration was greatly reduced to 7.28 mg/L. Similarly, the abundance of the dominant genera involved in the PAD (Thiobacillus, Sulfurimonas, and Ferritrophicum, etc.) or PHD (Syntrophomonas, Desulfomicrobium, and Desulfovibrio, etc.) process all increased in the PPMD system. Gene prediction completed by PICRUSt2 showed that the abundance of the functional genes involved in denitrification and sulfur oxidation all increased with the increase of HRT. This also accounted for the increased contribution of autotrophic denitrification to total nitrogen removal in the PPMD system. In addition, the analysis of metabolic pathways disclosed the specific conversion mechanisms of nitrogen and sulfur inside the reactor.
Collapse
Affiliation(s)
- Sicheng Yuan
- School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan, 430070, PR China
| | - Qingbo Zhong
- School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan, 430070, PR China
| | - Hongjun Zhang
- School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan, 430070, PR China
| | - Wentao Zhu
- School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan, 430070, PR China
| | - Weibo Wang
- CAS Key Laboratory of Aquatic Botany and Watershed Ecology, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, 430074, PR China
| | - Meng Li
- School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan, 430070, PR China
| | - Xinhua Tang
- School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan, 430070, PR China
| | - Shiyang Zhang
- School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan, 430070, PR China.
| |
Collapse
|
5
|
Liu H, Zeng W, Li J, Zhan M, Fan Z, Peng Y. Effect of S 2O 32--S addition on Anammox coupling sulfur autotrophic denitrification and mechanism analysis using N and O dual isotope effects. WATER RESEARCH 2022; 218:118404. [PMID: 35462259 DOI: 10.1016/j.watres.2022.118404] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Revised: 04/01/2022] [Accepted: 04/02/2022] [Indexed: 06/14/2023]
Abstract
Anaerobic ammonia oxidation (Anammox) coupling sulfur autotrophic denitrification is an effective method for the advanced nitrogen removal from the wastewater with limited carbon source. The influence of S2O32--S addition on Anammox coupling sulfur autotrophic denitrification was investigated by adding different concentrations of S2O32--S (0, 39, 78, 156 and 312 mg/L) to the Anammox system. The contribution of sulfur autotrophic denitrification and Anammox to nitrogen removal at S2O32--S concentrations of 156 mg/L was 75% ∼83% and 17%∼25%, respectively, and the mixed system achieved completely nitrogen removal. However, Anammox bioactivity was completely inhibited at S2O32--S concentrations up to 312 mg/L, and only sulfur autotrophic denitrification occurred. The isotopic effects of NO2--N (δ15NNO2 and δ18ONO2) and NO3--N (δ15NNO3 and δ18ONO3) during Anammox coupling sulfur autotrophic denitrification showed a gradual decrease trend with the increase of S2O32--S addition. The ratios of δ15NNO2:δ18ONO2 and δ15NNO3:δ18ONO3 was maintained at 1.30-2.41 and 1.36-2.52, respectively, which revealed that Anammox was dominant nitrogen removal pathway at S2O32--S concentrations less than 156 mg/L. Microbial diversity gradually decreased with the increase of S2O32--S. The S2O32--S addition enhanced the S2O32--driven autotrophic denitrification and weakened the Anammox, leading to a gradually decreasing trend of the proportion of Candidatus Brocadia as Anammox bacteria from the initial 27% to 4% (S2O32--S of 156 mg/L). Yet Norank-f-Hydrogenophilaceae (more than 50%) and Thiobacillus (54%) as functional bacteria of autotrophic denitrification obviously increased. The appropriate amount of S2O32--S addition promoted the performance of Anammox coupling sulfur autotrophic denitrification achieved completely nitrogen removal.
Collapse
Affiliation(s)
- Hong Liu
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Department of Environmental Engineering, Beijing University of Technology, No. 100 Pingleyuan, Chaoyang District, Beijing 100124, China
| | - Wei Zeng
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Department of Environmental Engineering, Beijing University of Technology, No. 100 Pingleyuan, Chaoyang District, Beijing 100124, China.
| | - Jianmin Li
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Department of Environmental Engineering, Beijing University of Technology, No. 100 Pingleyuan, Chaoyang District, Beijing 100124, China
| | - Mengjia Zhan
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Department of Environmental Engineering, Beijing University of Technology, No. 100 Pingleyuan, Chaoyang District, Beijing 100124, China
| | - Zhiwei Fan
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Department of Environmental Engineering, Beijing University of Technology, No. 100 Pingleyuan, Chaoyang District, Beijing 100124, China
| | - Yongzhen Peng
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Department of Environmental Engineering, Beijing University of Technology, No. 100 Pingleyuan, Chaoyang District, Beijing 100124, China
| |
Collapse
|
6
|
Lin Z, Cheng S, Li H, Jin B, He X. Highly selective and sensitive nitrite biocathode biosensor prepared by polarity inversion method coupled with selective removal of interfering electroactive bacteria. Biosens Bioelectron 2022; 214:114507. [DOI: 10.1016/j.bios.2022.114507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 06/21/2022] [Accepted: 06/22/2022] [Indexed: 11/02/2022]
|
7
|
Liu Y, Wang Y, Fan G, Su X, Zhou J, Liu D. Metagenomics reveals functional species and microbial mechanisms of an enriched thiosulfate-driven denitratation consortia. BIORESOURCE TECHNOLOGY 2021; 341:125916. [PMID: 34523585 DOI: 10.1016/j.biortech.2021.125916] [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: 07/10/2021] [Revised: 09/03/2021] [Accepted: 09/04/2021] [Indexed: 06/13/2023]
Abstract
In this study, thiosulfate-driven denitratation (TDD) system was successfully established under optimal S/N molar ratio of 1.00, with nitrite accumulation efficiency (NAE) of 82.24 ± 17.09%. This work highlighted that thiosulfate significantly preferred the reduction of nitrate than nitrite. However, after the depletion of thiosulfate, the in-situ formed intermediate product element sulfur (S0) served as the main electron donor, and significantly favored the reduction of nitrite than nitrate, which constrained nitrite accumulation and nitrate removal. In addition, metagenomic sequencing revealed that the functional denitratation species might be Thiobacillus_sp._65-29, but the occurrence of Nir-annotated species would decrease nitrite accumulation. Under S/N ratio of 1.00, the decreased abundant Nir-annotated species (e.g., Thiobacillus_sp.), as well as the down-regulated quorum sensing interactions between Nar- and Nir-annotated species were key microbial metabolisms of high NAE in the TDD system. Overall, this work provides new sight into the metagenome-base functional species and metabolic potential of thiosulfate-driven denitratation.
Collapse
Affiliation(s)
- Yihui Liu
- College of Civil Engineering, Fuzhou University, Fuzhou, Fujian 350116, PR China
| | - Yingmu Wang
- College of Civil Engineering, Fuzhou University, Fuzhou, Fujian 350116, PR China.
| | - Gongduan Fan
- College of Civil Engineering, Fuzhou University, Fuzhou, Fujian 350116, PR China
| | - Xiaoxuan Su
- Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, Fujian 361021, PR China
| | - Jian Zhou
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, PR China
| | - Deming Liu
- College of Civil Engineering, Fuzhou University, Fuzhou, Fujian 350116, PR China
| |
Collapse
|
8
|
Chen H, Tu Z, Wu S, Yu G, Du C, Wang H, Yang E, Zhou L, Deng B, Wang D, Li H. Recent advances in partial denitrification-anaerobic ammonium oxidation process for mainstream municipal wastewater treatment. CHEMOSPHERE 2021; 278:130436. [PMID: 33839386 DOI: 10.1016/j.chemosphere.2021.130436] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2021] [Revised: 03/25/2021] [Accepted: 03/27/2021] [Indexed: 05/05/2023]
Abstract
To solve the bottleneck of the unstable accumulation of nitrite in the partial nitrification (PN)-anammox (AMX) in municipal wastewater treatment, a novel process called partial denitrification (PD)-AMX has been developed. PD-AMX, which is known for cost-efficiency and environmental friendliness, has currently exhibited a promising potential for the removal of biological nitrogen from municipal wastewater and has attracted much research interest regarding its process mechanisms, as well as its practical applications. Here, we review the recent advances in the PD process and its coupling to the anammox process, including the development, basic principles, main characteristics, and critical process parameters of the stable operation of the PD-AMX process. We also explore the microbial community and its characteristics in the system and summarize the knowledge of the dominant bacteria to clarify the key factors affecting PD-AMX. Then, we introduce the engineering feasibility and economic feasibility as well as the potential challenges of the process. The induction and implementation of partial denitrification and maintenance of mainstream anammox are critical issues to be urgently solved. Meanwhile, the implementation of a full mainstream anammox application remains burdensome, while the mechanism of partial denitrification coupled to anammox needs to be further studied. Additionally, stable operation performance and process control1 methods need to be optimized or developed for the PD-AMX system for better engineering practice. This review can help to accelerate the research and application of the PD-AMX process for municipal wastewater treatment.
Collapse
Affiliation(s)
- Hong Chen
- Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, School of Hydraulic Engineering, Changsha University of Science and Technology, Changsha, 410004, China; Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, Sendai, 980-8579, Japan
| | - Zhi Tu
- Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, School of Hydraulic Engineering, Changsha University of Science and Technology, Changsha, 410004, China; College of Environmental Science and Engineering, Hunan University, Changsha, 410082, PR China
| | - Sha Wu
- Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, School of Hydraulic Engineering, Changsha University of Science and Technology, Changsha, 410004, China
| | - Guanlong Yu
- Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, School of Hydraulic Engineering, Changsha University of Science and Technology, Changsha, 410004, China
| | - Chunyan Du
- Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, School of Hydraulic Engineering, Changsha University of Science and Technology, Changsha, 410004, China
| | - Hong Wang
- Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, School of Hydraulic Engineering, Changsha University of Science and Technology, Changsha, 410004, China; College of Environmental Science and Engineering, Hunan University, Changsha, 410082, PR China
| | - Enzhe Yang
- Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, School of Hydraulic Engineering, Changsha University of Science and Technology, Changsha, 410004, China; School of Energy Science and Engineering, Central South University, Changsha, 410083, China
| | - Lu Zhou
- Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, School of Hydraulic Engineering, Changsha University of Science and Technology, Changsha, 410004, China
| | - Bin Deng
- Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, School of Hydraulic Engineering, Changsha University of Science and Technology, Changsha, 410004, China
| | - Dongbo Wang
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, PR China.
| | - Hailong Li
- School of Energy Science and Engineering, Central South University, Changsha, 410083, China.
| |
Collapse
|
9
|
Liu Z, Lin W, Luo Q, Chen Y, Hu Y. Effects of an organic carbon source on the coupling of sulfur(thiosulfate)-driven denitration with Anammox process. BIORESOURCE TECHNOLOGY 2021; 335:125280. [PMID: 34015567 DOI: 10.1016/j.biortech.2021.125280] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 05/06/2021] [Accepted: 05/09/2021] [Indexed: 06/12/2023]
Abstract
The sulfur(thiosulfate)-driven autotrophic denitrification coupled with Anammox (SDDA) process is proposed as an emerging technology for wastewater containing NH4+-N and NO3--N. However, the influence of organic matter on the SDDA process is not fully understood. A long-term experiment has shown that a moderate organic (acetate) (<140 mg/L COD) can accelerate the heterotrophic/autotrophic denitrification and Anammox activity, to reach as high as 92.8% ± 0.3% total nitrogen at a loading rate of 1.34 kg-N/(m3·d). Batch test results showed that Anammox made the largest contribution to the removal of nitrogen, even in an SDDA system with COD addition. Additionally, organics can promote the bioavailability of solid sulfur through reaction with sulfide to form polysulfides, which increased nitrite accumulation to forward Anammox process. Sulfur-oxidizing bacteria (e.g., Thiobacillus and Denitratisoma) coexisted with Anammox bacteria (e.g., Ca. Brocadia and Ca. Kuenenia) in the SDDA system despite the addition of exogenous COD.
Collapse
Affiliation(s)
- Zihe Liu
- Ministry of Education Key Laboratory of Pollution Control and Ecological Remediation for Industrial Agglomeration Area, School of Environment and Energy, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology Guangzhou, 510006, China
| | - Wenmin Lin
- Ministry of Education Key Laboratory of Pollution Control and Ecological Remediation for Industrial Agglomeration Area, School of Environment and Energy, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology Guangzhou, 510006, China
| | - Qijin Luo
- Ministry of Education Key Laboratory of Pollution Control and Ecological Remediation for Industrial Agglomeration Area, School of Environment and Energy, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology Guangzhou, 510006, China; South China Institute of Environmental Sciences, MEE, Guangzhou, 510006, China
| | - Yuancai Chen
- Ministry of Education Key Laboratory of Pollution Control and Ecological Remediation for Industrial Agglomeration Area, School of Environment and Energy, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology Guangzhou, 510006, China.
| | - Yongyou Hu
- Ministry of Education Key Laboratory of Pollution Control and Ecological Remediation for Industrial Agglomeration Area, School of Environment and Energy, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology Guangzhou, 510006, China
| |
Collapse
|
10
|
Deng YF, Tang WT, Huang H, Qian J, Wu D, Chen GH. Development of a kinetic model to evaluate thiosulfate-driven denitrification and anammox (TDDA) process. WATER RESEARCH 2021; 198:117155. [PMID: 33915406 DOI: 10.1016/j.watres.2021.117155] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 04/11/2021] [Accepted: 04/12/2021] [Indexed: 06/12/2023]
Abstract
Recently, the integration of sulfur-driven denitrification and anammox process has been extensively studied as a promising alternative nitrogen removal technology. Most of these studies investigated the process feasibility and monitored the community dynamics. However, an in-depth understanding of this new sulfur-nitrogen cycle bioprocess based on mathematical modeling and elucidation of complex interactions among different microorganisms has not yet been achieved. To fill this gap, we developed a kinetic model (with 7 bioprocesses, 12 variables, and 19 parameters) to assess the sulfur(thiosulfate)-driven denitrification and anammox (TDDA) process in a single reactor. The parameters used in this process were separately estimated by fitting the data obtained from the experiments. Then, the model was further validated under different conditions, and the results demonstrated that the developed model could describe the dynamic behaviors of nitrogen and sulfur conversions in the TDDA system. The newly developed branched thiosulfate oxidation model was also verified by conducting a metagenomics analysis. Using the developed model, we i) examined the interactions between sulfur-oxidizing bacteria and anammox bacteria at steady-state conditions with varying substrates to demonstrate the reliability of TDDA, and ii) evaluated the feasibility and operation of the TDDA process in terms of practical implementation. Our results will benefit further exploration of the significance of this novel S-N cycle bioprocess and guide its future applications.
Collapse
Affiliation(s)
- Yang-Fan Deng
- Department of Civil and Environmental Engineering, Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution (Hong Kong Branch) and Water Technology Center, The Hong Kong University of Science and Technology, Hong Kong, China; Shenzhen Research Institute, Fok Ying Tung Graduate School, The Hong Kong University of Science and Technology, Guangdong, China
| | - Wen-Tao Tang
- Department of Civil and Environmental Engineering, Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution (Hong Kong Branch) and Water Technology Center, The Hong Kong University of Science and Technology, Hong Kong, China; Shenzhen Research Institute, Fok Ying Tung Graduate School, The Hong Kong University of Science and Technology, Guangdong, China
| | - Hao Huang
- Department of Civil and Environmental Engineering, Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution (Hong Kong Branch) and Water Technology Center, The Hong Kong University of Science and Technology, Hong Kong, China; Shenzhen Research Institute, Fok Ying Tung Graduate School, The Hong Kong University of Science and Technology, Guangdong, China
| | - Jin Qian
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, China
| | - Di Wu
- Department of Civil and Environmental Engineering, Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution (Hong Kong Branch) and Water Technology Center, The Hong Kong University of Science and Technology, Hong Kong, China; Shenzhen Research Institute, Fok Ying Tung Graduate School, The Hong Kong University of Science and Technology, Guangdong, China.
| | - Guang-Hao Chen
- Department of Civil and Environmental Engineering, Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution (Hong Kong Branch) and Water Technology Center, The Hong Kong University of Science and Technology, Hong Kong, China; Shenzhen Research Institute, Fok Ying Tung Graduate School, The Hong Kong University of Science and Technology, Guangdong, China.
| |
Collapse
|
11
|
Zhang Z, Zhang K, Ouyang H, Li MKK, Luo Z, Li Y, Chen C, Yang X, Shao Z, Yan DYS. Simultaneous PAHs degradation, odour mitigation and energy harvesting by sediment microbial fuel cell coupled with nitrate-induced biostimulation. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 284:112045. [PMID: 33567357 DOI: 10.1016/j.jenvman.2021.112045] [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] [Received: 08/13/2020] [Revised: 12/17/2020] [Accepted: 12/18/2020] [Indexed: 06/12/2023]
Abstract
The study investigates a bioremediation process of polycyclic aromatic hydrocarbons (PAHs) removal and odour mitigation combined with energy harvesting. Sediment microbial fuel cells (SMFCs) were constructed with the addition of nitrate in the sediment to simultaneously remove acid-volatile sulphide (AVS) and PAHs. With the combined nitrate-SMFC treatment, over 90% of the AVS was removed from the sediment in 6 weeks of the SMFC operation and a maximum of 94% of AVS removal efficiency was reached at Week 10. The highest removal efficiencies of phenanthrene, pyrene, and benzo[a]pyrene was 93%, 80%, and 69%, respectively. The maximum voltage attained for the combined nitrate-SMFC treatment was 341 mV. Illumina HiSeq sequencing revealed that the autotrophic denitrifiers Thiobacillus are the dominant genus. In electricity generation, both sulphide-oxidation and PAH-oxidation are the possible pathways. Besides, the addition of nitrate stimulated the growth of Pseudomonas which is responsible for the electricity generation and direct biodegradation of the PAHs, indicating a synergistic effect. The developed bioremediation process demonstrated the potential in the in-situ bioremediation process utilizing SMFC combined with nitrate-induced bioremediation.
Collapse
Affiliation(s)
- Zhen Zhang
- College of Natural Resources and Environment, Joint Institute for Environmental Research & Education, South China Agricultural University, Guangzhou, 510642, China
| | - Kun Zhang
- College of Natural Resources and Environment, Joint Institute for Environmental Research & Education, South China Agricultural University, Guangzhou, 510642, China; College of Materials and Energy, South China Agricultural University, Guangzhou, 510642, China
| | - He Ouyang
- College of Natural Resources and Environment, Joint Institute for Environmental Research & Education, South China Agricultural University, Guangzhou, 510642, China
| | - Marcus K K Li
- Faculty of Science and Technology, Technological and Higher Education Institute of Hong Kong, Hong Kong
| | - Zifeng Luo
- College of Natural Resources and Environment, Joint Institute for Environmental Research & Education, South China Agricultural University, Guangzhou, 510642, China
| | - Yongtao Li
- College of Natural Resources and Environment, Joint Institute for Environmental Research & Education, South China Agricultural University, Guangzhou, 510642, China
| | - Chengyu Chen
- College of Natural Resources and Environment, Joint Institute for Environmental Research & Education, South China Agricultural University, Guangzhou, 510642, China
| | - Xingjian Yang
- College of Natural Resources and Environment, Joint Institute for Environmental Research & Education, South China Agricultural University, Guangzhou, 510642, China
| | - Zhiwei Shao
- College of Natural Resources and Environment, Joint Institute for Environmental Research & Education, South China Agricultural University, Guangzhou, 510642, China
| | - Dickson Y S Yan
- Faculty of Science and Technology, Technological and Higher Education Institute of Hong Kong, Hong Kong.
| |
Collapse
|
12
|
Fan C, Zhou W, He S, Huang J. Sulfur transformation in sulfur autotrophic denitrification using thiosulfate as electron donor. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 268:115708. [PMID: 33010676 DOI: 10.1016/j.envpol.2020.115708] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Revised: 09/03/2020] [Accepted: 09/20/2020] [Indexed: 06/11/2023]
Abstract
Thiosulfate is frequently used as an energy source and electron donor in autotrophic denitrification (AD) for removing nitrate from wastewater. However, transforming pathways of S2O32- in this process is unclear. Herein, the aim of this study is to explore possible transforming pathways of sulfur compounds in thiosulfate-based AD process. After measuring the variation of NO3-, NO2-, and various sulfur compounds such as S0, SO42-, S2O32-, acid volatile sulfide (AVS), and S2- in the presence and absence of S2O32-, the variation process of S2O32- and the contribution of various sulfur compounds were analyzed. The results indicated that S0, AVS, and S2- were the intermediate products when S2O32- was applied as an electron donor. All S2O32-, S0, AVS, and S2- could act as electron donors in the nitrate removal process with the final products of SO42-. The utilization priority of these four sulfur sources was presumed in the following order: S2- > S2O32- > AVS ≈ S0. Furthermore, sulfur transformation and balance in nitrate removal process was also investigated. This suggests the transforming pathways of sulfur compounds in denitrification process. Nitrogen removal and sulfur conversion process are dependent on the presence of microorganisms in the sludge.
Collapse
Affiliation(s)
- Chunzhen Fan
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, PR China; School of Life and Environmental Science, Wenzhou University, Wenzhou, 325000, PR China; School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, PR China
| | - Weili Zhou
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, PR China.
| | - Shengbing He
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, PR China
| | - Jungchen Huang
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, PR China
| |
Collapse
|
13
|
Yang H, Deng L, Xiao Y, Yang H, Wang H, Zheng D. Construction of autotrophic nitrogen removal system based on zero-valent iron (ZVI): performance and mechanism. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2020; 82:2990-3002. [PMID: 33341787 DOI: 10.2166/wst.2020.544] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
In this study, the performance and mechanism of nitrogen removal in sequencing batch reactors (SBRs) with and without zero-valent iron (ZVI) was investigated. The results showed that ZVI had a capacity to promote NH4+-N conversion, NO2--N accumulation and total inorganic nitrogen (TIN) removal, with the TIN removal rate being increased by 29.45%. The ZVI also had a significant impact on microbial community structure by means of high-throughput pyrosequencing, increasing the enrichment of Anammox (anaerobic ammonium oxidation) bacteria Candidatus Brocadia and Feammox (anaerobic ferric ammonium oxidation) bacteria Ignavibacterium. With ZVI addition, the main pathway of nitrogen removal was changed from nitrification-heterotrophic denitrification to Anammox and Feammox.
Collapse
Affiliation(s)
- Han Yang
- Biogas Institute of Ministry of Agriculture and Rural Affairs, Chengdu 610041, China and Laboratory of Development and Application of Rural Renewable Energy, Ministry of Agriculture and Rural Affairs, Chengdu, 610041, China E-mail: ; Chengdu Drainage Limited Liability Company, Chengdu 610000, China
| | - Liangwei Deng
- Biogas Institute of Ministry of Agriculture and Rural Affairs, Chengdu 610041, China and Laboratory of Development and Application of Rural Renewable Energy, Ministry of Agriculture and Rural Affairs, Chengdu, 610041, China E-mail:
| | - Youqian Xiao
- Biogas Institute of Ministry of Agriculture and Rural Affairs, Chengdu 610041, China and Laboratory of Development and Application of Rural Renewable Energy, Ministry of Agriculture and Rural Affairs, Chengdu, 610041, China E-mail:
| | - Hongnan Yang
- Biogas Institute of Ministry of Agriculture and Rural Affairs, Chengdu 610041, China and Laboratory of Development and Application of Rural Renewable Energy, Ministry of Agriculture and Rural Affairs, Chengdu, 610041, China E-mail:
| | - Hong Wang
- Biogas Institute of Ministry of Agriculture and Rural Affairs, Chengdu 610041, China and Laboratory of Development and Application of Rural Renewable Energy, Ministry of Agriculture and Rural Affairs, Chengdu, 610041, China E-mail:
| | - Dan Zheng
- Biogas Institute of Ministry of Agriculture and Rural Affairs, Chengdu 610041, China and Laboratory of Development and Application of Rural Renewable Energy, Ministry of Agriculture and Rural Affairs, Chengdu, 610041, China E-mail:
| |
Collapse
|
14
|
Mohanakrishna G, Abu-Reesh IM, Pant D. Enhanced bioelectrochemical treatment of petroleum refinery wastewater with Labaneh whey as co-substrate. Sci Rep 2020; 10:19665. [PMID: 33184377 PMCID: PMC7665216 DOI: 10.1038/s41598-020-76668-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2020] [Accepted: 10/30/2020] [Indexed: 11/26/2022] Open
Abstract
Petroleum refinery wastewater (PRW) that contains recalcitrant components as the major portion of constituents is difficult to treat by conventional biological processes. Microbial fuel cells (MFCs) which also produce renewable energy were found to be promising for the treatment of PRW. However, due to the high total dissolved solids and low organic matter content, the efficiency of the process is limited. Labaneh whey (LW) wastewater, having higher biodegradability and high organic matter was evaluated as co-substrate along with PRW in standard dual chambered MFC to achieve improved power generation and treatment efficiency. Among several concentrations of LW as co-substrate in the range of 5–30% (v/v) with PRW, 85:15 (PRW:LW) showed to have the highest power generation (power density (PD), 832 mW/m2), which is two times higher than the control with PRW as sole substrate (PD, 420 mW/m2). On the contrary, a maximum substrate degradation rate of 0.420 kg COD/m3-day (ξCOD, 63.10%), was registered with 80:20 feed. Higher LW ratios in PRW lead to the production of VFA which in turn gradually decreased the anolyte pH to below 4.5 (70:30 feed). This resulted in a drop in the performance of MFC with respect to power generation (274 mW/m2, 70:30 feed) and substrate degradation (ξCOD, 17.84%).
Collapse
Affiliation(s)
- Gunda Mohanakrishna
- Department of Chemical Engineering, College of Engineering, Qatar University, P O Box 2713, Doha, Qatar
| | - Ibrahim M Abu-Reesh
- Department of Chemical Engineering, College of Engineering, Qatar University, P O Box 2713, Doha, Qatar.
| | - Deepak Pant
- Separation and Conversion Technologies, VITO - Flemish Institute for Technological Research, Boeretang 200, 2400, Mol, Belgium
| |
Collapse
|
15
|
Yang Y, Lu H, Shao Z, Liu S, Zhang Y, Jiang D, Gu L, He Q, Chai H. Electron buffer formation through coupling thiosulfate-dependent denitratation with anammox in a single-stage sequencing batch reactor. BIORESOURCE TECHNOLOGY 2020; 312:123560. [PMID: 32473471 DOI: 10.1016/j.biortech.2020.123560] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 05/15/2020] [Accepted: 05/17/2020] [Indexed: 06/11/2023]
Abstract
The combination of thiosulfate-dependent denitratation and anammox in a single-stage reactor provides a feasible way to improve total nitrogen removal. The molar ratios of NH4+/NO3- and S2O32-/NO3- were confirmed to be two key factors affecting the reactor performance. The optimal total nitrogen removal efficiency of 99.4% was achieved at NH4+/NO3- of 0.75 and S2O32-/NO3- of 0.85. The multiple thiosulfate oxidation pathways contribute to electron buffers generated in the system. A novel isotope labeling method using 15N was applied to reveal N transformation pathways and a 3-step model was proposed. The nitrate was first converted to nitrite or nitric oxide (NO) by sulfur-oxidizing bacteria. In the second step, both nitrite and NO were utilized by anammox bacteria. Finally, the nitrate generated from anammox could be removed using sulfur deposits as electron donors. The findings provide a potential solution for mainstream nitrogen removal.
Collapse
Affiliation(s)
- Yan Yang
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, China; National Centre for International Research of Low-carbon and Green Buildings, Chongqing University, Chongqing 400045, China
| | - Hui Lu
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, China; Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Guangzhou, China
| | - Zhiyu Shao
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, China; National Centre for International Research of Low-carbon and Green Buildings, Chongqing University, Chongqing 400045, China
| | - Shiyi Liu
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, China; National Centre for International Research of Low-carbon and Green Buildings, Chongqing University, Chongqing 400045, China
| | - Yuxin Zhang
- College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
| | - Debin Jiang
- College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067, China
| | - Li Gu
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, China; National Centre for International Research of Low-carbon and Green Buildings, Chongqing University, Chongqing 400045, China
| | - Qiang He
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, China; National Centre for International Research of Low-carbon and Green Buildings, Chongqing University, Chongqing 400045, China
| | - Hongxiang Chai
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, China; National Centre for International Research of Low-carbon and Green Buildings, Chongqing University, Chongqing 400045, China.
| |
Collapse
|
16
|
Ai T, Zhan H, Zou L, Fu J, Fu Q, He Q, Ai H. Potential applications of endogenous sulfide for enhanced denitrification of low C/N domestic wastewater in anodic mixotrophic denitrification microbial fuel cell: The mechanism of electrons transfer and microbial community. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 722:137830. [PMID: 32349200 DOI: 10.1016/j.scitotenv.2020.137830] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Revised: 03/01/2020] [Accepted: 03/07/2020] [Indexed: 06/11/2023]
Abstract
Anodic mixotrophic denitrification microbial fuel cell (MFC) was developed for pollutants removal and electricity generation in treatment of low C/N domestic wastewater. The experimental results show that the MFC achieved up to 100% of acetate, 100% of sulfide, and more than 91% of nitrate removal efficiency in all the MFCs. Particularly, thiosulfate was generated as the main intermediate of sulfide oxidation, and the sulfate generation ratio ranged from 66.93% to 73.76%. Those electrons produced during the acetate and sulfide oxidation were mainly used for denitrification and electricity generation. The microbial community analysis revealed that heterotrophic denitrifying bacteria (HDB) and sulfide-based autotrophic denitrifying bacteria (SADB) were the dominant bacteria for pollutants removal, and those facultative autotrophic bacterium (FAB) were key functional genera for high sulfate generation under both low and high sulfide concentrations. Meanwhile, the microbial functional prediction revealed that sulfide oxidation gene of Sqr and Sox were highly expressed. Moreover, a preliminary sulfide-based autotrophic denitrification (SAD) potential estimation indicated that the sulfide generated in the WWTPs had great potential for denitrification.
Collapse
Affiliation(s)
- Tao Ai
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, PR China
| | - Hao Zhan
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, PR China
| | - Linzhi Zou
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, PR China
| | - Junyu Fu
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, PR China
| | - Qibin Fu
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, PR China
| | - Qiang He
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, PR China
| | - Hainan Ai
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, PR China.
| |
Collapse
|
17
|
Sun S, Liu J, Zhang M, He S. Thiosulfate-driven autotrophic and mixotrophic denitrification processes for secondary effluent treatment: Reducing sulfate production and nitrous oxide emission. BIORESOURCE TECHNOLOGY 2020; 300:122651. [PMID: 31887578 DOI: 10.1016/j.biortech.2019.122651] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 12/15/2019] [Accepted: 12/17/2019] [Indexed: 06/10/2023]
Abstract
Three ecological floating beds (EFBs) with different additional electron donors including sodium thiosulfate, mixed electron donors of sodium thiosulfate and sodium acetate and without additional electron donors were established to compare the differences of nitrogen removal efficiency, nitrous oxide emission, microbial community and functional gene between autotrophic and mixotrophic denitrification. Results showed denitrification efficiency was nearly 100% in both autotrophic and mixotrophic process when electron donors were sufficient while that ranged from 4 to 43% without additional electron donors. Sodium acetate addition could effectively decrease sulfate concentration in effluent and nitrogen oxide flux. In addition, high-throughput sequencing analysis revealed autotrophic denitrifying bacteria were dominant in autotrophic denitrification while autotrophic, facultative and heterotrophic denitrifying bacteria coexisted in mixotrophic denitrification, and there was no dominant genus. For EFB with mixed external autotrophic and heterotrophic electron donors, it can not only achieve better denitrification efficiency, but also reduce the emission of nitrous oxide.
Collapse
Affiliation(s)
- Shanshan Sun
- School of Environmental Science and Engineering, Shanghai Jiaotong University, Shanghai 200240, PR China
| | - Jie Liu
- School of Environmental Science and Engineering, Shanghai Jiaotong University, Shanghai 200240, PR China
| | - Manping Zhang
- School of Environmental Science and Engineering, Shanghai Jiaotong University, Shanghai 200240, PR China
| | - Shengbing He
- School of Environmental Science and Engineering, Shanghai Jiaotong University, Shanghai 200240, PR China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 20092, PR China; Shanghai Engineering Research Center of Landscape Water Environment, Shanghai 200031, PR China.
| |
Collapse
|
18
|
Fu C, Li J, Lv X, Song W, Zhang X. Operation performance and microbial community of sulfur-based autotrophic denitrification sludge with different sulfur sources. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2020; 42:1009-1020. [PMID: 31897870 DOI: 10.1007/s10653-019-00482-5] [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: 12/18/2018] [Accepted: 11/23/2019] [Indexed: 06/10/2023]
Abstract
Operation performance and bacterial community structure of sulfur-based autotrophic denitrification (SAD) based on different sulfur sources served as electron donor was first parallelly compared among three sequencing batch reactors. Sulfur and sodium thiosulfate systems achieved similar operation performance and were superior to that of sodium sulfide. When the influent NO3--N concentration ranged from 50 to 150 mg/L, the effluent NO3--N concentrations of the sulfur and sodium thiosulfate systems were 0-5.99 mg/L and 0-4.52 mg/L, respectively, without NO2--N accumulation. However, when the effluent concentration of NO3--N in the sodium sulfide system was 0-10.38 mg/L, that of NO2--N in the effluent was 0-39.85 mg/L. In addition, participation of sulfur sources presented obvious pressure on the bacterial community structure based on the high-throughput sequencing. Microbial diversity results indicated that sludge with elemental sulfur as electron donor had the richest microbial diversity, followed by sodium thiosulfate and sodium sulfide. Moreover, sludge with elemental sulfur and sodium thiosulfate as electron donor demonstrated more similar community structure compared with the sludge that denitrified with sodium sulfide according to the microbial similarity analysis. The 9.34%, 24.3% and 29.6% of sequences could be assigned to potential SAD organisms from sludge denitrifying with elemental sulfur, sodium thiosulfate and sodium sulfide, respectively. Furthermore, all sludge denitrifying with different sulfur sources showed an enrichment of separate core functional microorganisms. This study could provide an insight into improving the understanding of SAD in engineering applications.
Collapse
Affiliation(s)
- Caixia Fu
- School of Environment, Harbin Institute of Technology, Harbin, 150090, China
- Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Ji Li
- School of Civil and Environmental Engineering, Shenzhen Key Laboratory of Water Resource Application and Environmental Pollution Control, Harbin Institute of Technology (Shenzhen), E202, HIT Campus Shenzhen University Town Xili, Shenzhen, 518055, China
| | - Xiaomei Lv
- School of Environment and Civil Engineering, Dongguan University of Technology, Dongguan, 523808, Guangdong, China
| | - Wei Song
- School of Civil and Environmental Engineering, Shenzhen Key Laboratory of Water Resource Application and Environmental Pollution Control, Harbin Institute of Technology (Shenzhen), E202, HIT Campus Shenzhen University Town Xili, Shenzhen, 518055, China
| | - Xiaolei Zhang
- School of Civil and Environmental Engineering, Shenzhen Key Laboratory of Water Resource Application and Environmental Pollution Control, Harbin Institute of Technology (Shenzhen), E202, HIT Campus Shenzhen University Town Xili, Shenzhen, 518055, China.
| |
Collapse
|
19
|
Zhang Z, Zhang Y, Chen Y. Recent advances in partial denitrification in biological nitrogen removal: From enrichment to application. BIORESOURCE TECHNOLOGY 2020; 298:122444. [PMID: 31784254 DOI: 10.1016/j.biortech.2019.122444] [Citation(s) in RCA: 77] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Revised: 11/13/2019] [Accepted: 11/15/2019] [Indexed: 05/12/2023]
Abstract
To maximize energy recovery, carbon capture followed by shortcut nitrogen removal is becoming the most promising route in biological wastewater treatment. As the intermediate of microbial denitrification, nitrite could serve as a substrate for anammox bacteria, while N2O is a combustion promoter that can increase 37% energy release from CH4 than O2. Therefore, the important advances in partial denitrification (PD) that produces nitrite or N2O as the main product using inorganic or organic electron donors were critically reviewed. Specifically, the enrichment strategies of PD microorganisms were obtained by analyzing the selection pressures, metabolism, physiology, and microbiology of these microorganisms. Furthermore, some prospective and promising processes integrating PD microorganisms and the bottlenecks of current applications were discussed. The obtained knowledge would provide new insights into the upgrading of current WWTPs involving commitment to achieve nitrogen removal from wastewaters more economically and environmentally friendly.
Collapse
Affiliation(s)
- Zhengzhe Zhang
- State Key Laboratory of Pollution Control and Resources Reuse, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China
| | - Yu Zhang
- State Key Laboratory of Pollution Control and Resources Reuse, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China
| | - Yinguang Chen
- State Key Laboratory of Pollution Control and Resources Reuse, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China.
| |
Collapse
|
20
|
Cui YX, Biswal BK, van Loosdrecht MCM, Chen GH, Wu D. Long term performance and dynamics of microbial biofilm communities performing sulfur-oxidizing autotrophic denitrification in a moving-bed biofilm reactor. WATER RESEARCH 2019; 166:115038. [PMID: 31505308 DOI: 10.1016/j.watres.2019.115038] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Revised: 08/30/2019] [Accepted: 08/31/2019] [Indexed: 06/10/2023]
Abstract
Sulfide-oxidizing autotrophic denitrification (SOAD) implemented in a moving-bed biofilm reactor (MBBR) is a promising alternative to conventional heterotrophic denitrification in mainstream biological nitrogen removal. The sulfide-oxidation intermediate - elemental sulfur - is crucial for the kinetic and microbial properties of the sulfur-oxidizing bacterial communities, but its role is yet to be studied in depth. Hence, to investigate the performance and microbial communities of the aforementioned new biosystem, we operated for a long term a laboratory-scale (700 d) SOAD MBBR to treat synthetic saline domestic sewage, with an increase of the surface loading rate from 8 to 50 mg N/(m2·h) achieved by shortening the hydraulic retention time from 12 h to 2 h. The specific reaction rates of the reactor were eventually increased up to 0.37 kg N/(m3·d) and 0.73 kg S/(m3·d) for nitrate reduction and sulfide oxidation with no significant sulfur elemental accumulation. Two sulfur-oxidizing bacterial (SOB) clades, Sox-independent SOB (SOBI) and Sox-dependent SOB (SOBII), were responsible for indirect two-step sulfur oxidation (S2-→S0→SO42-) and direct one-step sulfur oxidation (S2-→SO42-), respectively. The SOBII biomass-specific electron transfer capacity could be around 2.5 times greater than that of SOBI (38 mmol e-/(gSOBII·d) versus 15 mmol e-/(gSOBI·d)), possibly resulting in the selection of SOBII over SOBI under stress conditions (such as a shorter HRT). Further studies on the methods and mechanism of selecting of SOBII over SOBI in biofilm reactors are recommended. Overall, the findings shed light on the design and operation of MBBR-based SOAD processes for mainstream biological denitrification.
Collapse
Affiliation(s)
- Yan-Xiang Cui
- Department of Civil and Environmental Engineering, Water Technology Center, Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution (Hong Kong Branch), The Hong Kong University of Science and Technology, Hong Kong China; Shenzhen Research Institute, Fok Ying Tung Graduate School, The Hong Kong University of Science and Technology, Guangdong, China
| | - Basanta Kumar Biswal
- Department of Civil and Environmental Engineering, Water Technology Center, Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution (Hong Kong Branch), The Hong Kong University of Science and Technology, Hong Kong China
| | | | - Guang-Hao Chen
- Department of Civil and Environmental Engineering, Water Technology Center, Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution (Hong Kong Branch), The Hong Kong University of Science and Technology, Hong Kong China; Shenzhen Research Institute, Fok Ying Tung Graduate School, The Hong Kong University of Science and Technology, Guangdong, China
| | - Di Wu
- Department of Civil and Environmental Engineering, Water Technology Center, Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution (Hong Kong Branch), The Hong Kong University of Science and Technology, Hong Kong China; Shenzhen Research Institute, Fok Ying Tung Graduate School, The Hong Kong University of Science and Technology, Guangdong, China.
| |
Collapse
|
21
|
Qian J, Zhang M, Jing R, Bai L, Zhou B, Zhao M, Pei X, Wei L, Chen GH. Thiosulfate as the electron acceptor in Sulfur Bioconversion-Associated Process (SBAP) for sewage treatment. WATER RESEARCH 2019; 163:114850. [PMID: 31326695 DOI: 10.1016/j.watres.2019.07.017] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Revised: 06/21/2019] [Accepted: 07/08/2019] [Indexed: 06/10/2023]
Abstract
The sulfur bioconversion-associated processes (SBAP) for sewage treatment have been extensively reported so far. In this study, biological thiosulfate reduction (BTR)-driven biotechnology for high rate sulfidogenesis and organic removal was explored to further close the gap of our knowledge on the sulfur cycle-based sewage treatment bioprocess. With thiosulfate as the electron acceptor, the sulfidogenic rate in the UASB rector is 105.6 mg S/L/h with the sludge yield of only 0.044 g MLVSS/g CODsubstrate. Thus providing sufficient electron donors or chemical sources (i.e. HS-) for the downstream autotrophic denitrification or for the cost-effective heavy metal precipitation. Thiosulfate disproportionation was not observed in BTR reactor. High-throughput pyrosequencing analysis reveals that Desulfobulbus and Desulfomicrobium are the predominant thiosulfate-reducing genera and the thiosulfate disproportionation-bacteria were at much lower genus level. The specific thiosulfate-reducer i.e. Dethiosulfatibacter which could utilize thiosulfate but not sulfate as the electron acceptor was also identified. Batch testing results indicate that the sulfidogenic activity on thiosulfate was 1.5 times that on sulfate. The optimal pH for BTR activity was between 7.0 and 8.0, a typical pH range of the municipal sewage. Thiosulfate can be efficiently recovered in the sulfide-driven denitritation reactor enriched with abundant sulfide-oxidizing genera (mainly including Thiobacillus and Sulfurimonas). Finally, a conceptual model of the sulfur cycle based on the biotransformation between thiosulfate and sulfide was established, offering new insights into the sustainable SBAP with sludge minimization.
Collapse
Affiliation(s)
- Jin Qian
- Research & Development Institute in Shenzhen & School of Natural and Applied Sciences, Northwestern Polytechnical University, China; State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China.
| | - Mingkuan Zhang
- Research & Development Institute in Shenzhen & School of Natural and Applied Sciences, Northwestern Polytechnical University, China
| | - Ran Jing
- Department of Civil and Environmental Engineering, University of Maryland at College Park, 0147L Glenn L. Martin Hall, College Park, MD, 20742, USA
| | - Linqin Bai
- Research & Development Institute in Shenzhen & School of Natural and Applied Sciences, Northwestern Polytechnical University, China
| | - Bo Zhou
- Research & Development Institute in Shenzhen & School of Natural and Applied Sciences, Northwestern Polytechnical University, China
| | - Mingjun Zhao
- Research & Development Institute in Shenzhen & School of Natural and Applied Sciences, Northwestern Polytechnical University, China
| | - Xiangjun Pei
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu, China.
| | - Li Wei
- Department of Civil & Environmental Engineering, Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution (Hong Kong Branch) and Water Technology Center, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China
| | - Guang-Hao Chen
- Department of Civil & Environmental Engineering, Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution (Hong Kong Branch) and Water Technology Center, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China
| |
Collapse
|
22
|
Cui YX, Guo G, Ekama GA, Deng YF, Chui HK, Chen GH, Wu D. Elucidating the biofilm properties and biokinetics of a sulfur-oxidizing moving-bed biofilm for mainstream nitrogen removal. WATER RESEARCH 2019; 162:246-257. [PMID: 31279316 DOI: 10.1016/j.watres.2019.02.061] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 02/25/2019] [Accepted: 02/26/2019] [Indexed: 06/09/2023]
Abstract
The sulfide-oxidizing autotrophic denitrification (SOAD) process offers a feasible alternative to mainstream heterotrophic denitrification in treating domestic sewage with insufficient organics. Previously SOAD has been successfully applied in a moving-bed biofilm reactor (MBBR). However, the biofilm properties and biokinetics are still not thoroughly understood. The present study was therefore designed to investigate these features of sulfur-oxidizing biofilms (SOBfs) cultivated in a lab-scale MBBR under stable operation for over a year. The biofilms developed were 160 μm thick, had an uneven and porous surface on which elemental sulfur (S0) accumulated, and the SOB biomass was highly diverse. The bioprocess kinetics were evaluated through 12 batch experiments. The results were interpreted by adopting a two-step sulfide oxidation model (sulfide→S0 and S0→ sulfate) with all specific rates having a linear regression coefficient of R2 > 0.9. Moreover, the inhibitory kinetic analysis revealed that 1) the maximum treatment capacity (about 480 mg S/(m2·h) and 80 mg N/(m2·h)) was observed at low sulfide level (40 mg S/L), while higher sulfide level (60-150 mg S/L) showed increasing inhibition on the oxidation of both sulfide and sulfur and denitrification. 2) The denitritation activity decreased by up to 43% when free nitrous acid reached a maximum of 8.6 μg N/L, whereas the oxidation of sulfide and sulfur did not have any significant effect. Interestingly, two physiologically diverse SOB groups were found in this special biofilm. The mechanisms of the cooperation and competition for electron donors and acceptors between these two SOB clades are proposed. The results of this study greatly enhance our understanding of the design and optimization of SOAD-MBBR for mainstream nitrogen removal.
Collapse
Affiliation(s)
- Yan-Xiang Cui
- Department of Civil and Environmental Engineering, Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution (Hong Kong Branch) and Water Technology Center, The Hong Kong University of Science and Technology, Hong Kong, China; Fok Ying Tung Graduate School and Shenzhen Research Institute, The Hong Kong University of Science and Technology, Guangdong, China
| | - Gang Guo
- Department of Civil and Environmental Engineering, Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution (Hong Kong Branch) and Water Technology Center, The Hong Kong University of Science and Technology, Hong Kong, China
| | - George A Ekama
- Water Research Group, Department of Civil Engineering, University of Cape Town, Cape Town, South Africa
| | - Yang-Fan Deng
- Department of Civil and Environmental Engineering, Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution (Hong Kong Branch) and Water Technology Center, The Hong Kong University of Science and Technology, Hong Kong, China
| | - Ho-Kwong Chui
- Department of Civil and Environmental Engineering, Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution (Hong Kong Branch) and Water Technology Center, The Hong Kong University of Science and Technology, Hong Kong, China
| | - Guang-Hao Chen
- Department of Civil and Environmental Engineering, Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution (Hong Kong Branch) and Water Technology Center, The Hong Kong University of Science and Technology, Hong Kong, China; Fok Ying Tung Graduate School and Shenzhen Research Institute, The Hong Kong University of Science and Technology, Guangdong, China
| | - Di Wu
- Department of Civil and Environmental Engineering, Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution (Hong Kong Branch) and Water Technology Center, The Hong Kong University of Science and Technology, Hong Kong, China; Fok Ying Tung Graduate School and Shenzhen Research Institute, The Hong Kong University of Science and Technology, Guangdong, China.
| |
Collapse
|
23
|
Guo G, Ekama GA, Wang Y, Dai J, Biswal BK, Chen G, Wu D. Advances in sulfur conversion-associated enhanced biological phosphorus removal in sulfate-rich wastewater treatment: A review. BIORESOURCE TECHNOLOGY 2019; 285:121303. [PMID: 30952535 DOI: 10.1016/j.biortech.2019.03.142] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Revised: 03/26/2019] [Accepted: 03/29/2019] [Indexed: 06/09/2023]
Abstract
Recently an innovative sulfur conversion-associated enhanced biological phosphorus removal (S-EBPR) process has been developed for treating sulfate-rich wastewater. This process has successfully integrated sulfur (S), carbon (C), nitrogen (N) and P cycles for simultaneous metabolism or removal of C, N and P; moreover this new process relies on the synergy among the slow-growing sulfate-reducing bacteria and sulfur-oxidizing bacteria, hence generating little excess sludge. To elucidate this new process, researchers have investigated the microorganisms proliferated in the system, identified the biochemical pathways and assessed the impact of operational and environmental factors on process performance as well as trials on process optimization. This paper for the first time reviews the recent advances that have been achieved, particularly relating to the areas of S-EBPR microbiology and biochemistry, as well as the effects of environmental factors (e.g., electron donors/acceptors, pH, temperature, etc.). Moreover, future directions for researches and applications are proposed.
Collapse
Affiliation(s)
- Gang Guo
- School of Environmental Science and Engineering, Huazhong University of Science and Technology (HUST), Key Laboratory of Water and Wastewater Treatment (HUST), MOHURD, Wuhan 430074, China; Department of Civil & Environmental Engineering; Hong Kong Branch of the Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, The Hong Kong University of Science and Technology, Hong Kong, China; Wastewater Treatment Laboratory, FYT Graduate School, The Hong Kong University of Science and Technology, Nansha, Guangzhou, China
| | - George A Ekama
- Water Research Group, Department of Civil Engineering, University of Cape Town, Cape Town, South Africa
| | - Yayi Wang
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, China
| | - Ji Dai
- Department of Civil & Environmental Engineering; Hong Kong Branch of the Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, The Hong Kong University of Science and Technology, Hong Kong, China
| | - Basanta Kumar Biswal
- Department of Civil & Environmental Engineering; Hong Kong Branch of the Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, The Hong Kong University of Science and Technology, Hong Kong, China
| | - Guanghao Chen
- Department of Civil & Environmental Engineering; Hong Kong Branch of the Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, The Hong Kong University of Science and Technology, Hong Kong, China; Wastewater Treatment Laboratory, FYT Graduate School, The Hong Kong University of Science and Technology, Nansha, Guangzhou, China
| | - Di Wu
- Department of Civil & Environmental Engineering; Hong Kong Branch of the Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution, The Hong Kong University of Science and Technology, Hong Kong, China; Wastewater Treatment Laboratory, FYT Graduate School, The Hong Kong University of Science and Technology, Nansha, Guangzhou, China.
| |
Collapse
|
24
|
Cui YX, Biswal BK, Guo G, Deng YF, Huang H, Chen GH, Wu D. Biological nitrogen removal from wastewater using sulphur-driven autotrophic denitrification. Appl Microbiol Biotechnol 2019; 103:6023-6039. [DOI: 10.1007/s00253-019-09935-4] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Revised: 05/20/2019] [Accepted: 05/21/2019] [Indexed: 01/06/2023]
|
25
|
Legin E, Zadorozhnaya O, Khaydukova M, Kirsanov D, Rybakin V, Zagrebin A, Ignatyeva N, Ashina J, Sarkar S, Mukherjee S, Bhattacharyya N, Bandyopadhyay R, Legin A. Rapid Evaluation of Integral Quality and Safety of Surface and Waste Waters by a Multisensor System (Electronic Tongue). SENSORS 2019; 19:s19092019. [PMID: 31035734 PMCID: PMC6547355 DOI: 10.3390/s19092019] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Revised: 04/22/2019] [Accepted: 04/26/2019] [Indexed: 11/16/2022]
Abstract
The paper describes a wide-range practical application of the potentiometric multisensor system (MS) (1) for integral safety evaluation of a variety of natural waters at multiple locations, under various climatic conditions and anthropogenic stress and (2) for close to real consistency evaluation of waste water purification processes at urban water treatment plants. In total, 25 natural surface water samples were collected around St. Petersburg (Russia), analyzed as is, and after ultrasonic treatment. Toxicity of the samples was evaluated using bioassay and MS. Relative errors of toxicity assessment with MS in these samples were below 20%. The system was also applied for fast determination of integral water quality using chemical oxygen demand (COD) values in 20 samples of water from river and ponds in Kolkata (India) and performed with an acceptable precision of 20% to 22% in this task. Furthermore, the MS was applied for fast simultaneous evaluation of COD, biochemical oxygen demand, inorganic phosphorous, ammonia, and nitrate nitrogen at two waste water treatment plants (over 320 samples). Reasonable precision (within 25%) of such analysis is acceptable for rapid water safety evaluation and enables fast control of the purification process. MS proved to be a practicable analytical instrument for various real-world tasks related to water safety monitoring.
Collapse
Affiliation(s)
- Evgeny Legin
- Laboratory of Artificial Sensory Systems, ITMO University, Kronverkskiy pr, 49, St. Petersburg 197101, Russia.
- Institute of Chemistry, St. Petersburg State University, Mendeleev Center, Universitetskaya nab. 7/9, St. Petersburg 199034, Russia.
| | - Olesya Zadorozhnaya
- Institute of Chemistry, St. Petersburg State University, Mendeleev Center, Universitetskaya nab. 7/9, St. Petersburg 199034, Russia.
- Sensor Systems LLC, pr. Pyatiletok, 2, St. Petersburg 193318, Russia.
| | - Maria Khaydukova
- Institute of Chemistry, St. Petersburg State University, Mendeleev Center, Universitetskaya nab. 7/9, St. Petersburg 199034, Russia.
| | - Dmitry Kirsanov
- Laboratory of Artificial Sensory Systems, ITMO University, Kronverkskiy pr, 49, St. Petersburg 197101, Russia.
- Institute of Chemistry, St. Petersburg State University, Mendeleev Center, Universitetskaya nab. 7/9, St. Petersburg 199034, Russia.
| | - Vladimir Rybakin
- Institute of Limnology, Russian Academy of Sciences, ul. Sevast'yanova 9, St.-Petersburg 196105, Russia.
| | - Anatoly Zagrebin
- Institute of Limnology, Russian Academy of Sciences, ul. Sevast'yanova 9, St.-Petersburg 196105, Russia.
| | - Natalia Ignatyeva
- Institute of Limnology, Russian Academy of Sciences, ul. Sevast'yanova 9, St.-Petersburg 196105, Russia.
| | - Julia Ashina
- Laboratory of Artificial Sensory Systems, ITMO University, Kronverkskiy pr, 49, St. Petersburg 197101, Russia.
| | - Subrata Sarkar
- Centre for Development of Advanced Computing (C-DAC), E-2/1, Block-GP, Sector⁻V, Salt Lake, Kolkata 700091, West Bengal, India.
| | - Subhankar Mukherjee
- Centre for Development of Advanced Computing (C-DAC), E-2/1, Block-GP, Sector⁻V, Salt Lake, Kolkata 700091, West Bengal, India.
| | - Nabarun Bhattacharyya
- Laboratory of Artificial Sensory Systems, ITMO University, Kronverkskiy pr, 49, St. Petersburg 197101, Russia.
- Centre for Development of Advanced Computing (C-DAC), E-2/1, Block-GP, Sector⁻V, Salt Lake, Kolkata 700091, West Bengal, India.
| | - Rajib Bandyopadhyay
- Laboratory of Artificial Sensory Systems, ITMO University, Kronverkskiy pr, 49, St. Petersburg 197101, Russia.
- Department of Instrumentation and Electronics Engineering, Jadavpur University, Salt Lake Campus, Plot No.8, Salt Lake Bypass, LB Block, Sector III, Salt Lake City, Kolkata 700098, West Bengal, India.
| | - Andrey Legin
- Laboratory of Artificial Sensory Systems, ITMO University, Kronverkskiy pr, 49, St. Petersburg 197101, Russia.
- Institute of Chemistry, St. Petersburg State University, Mendeleev Center, Universitetskaya nab. 7/9, St. Petersburg 199034, Russia.
| |
Collapse
|
26
|
Zhang L, Song Y, Zuo Y, Huo S, Liang C, Hu C. Integrated sulfur- and iron-based autotrophic denitrification process and microbial profiling in an anoxic fluidized-bed membrane bioreactor. CHEMOSPHERE 2019; 221:375-382. [PMID: 30641379 DOI: 10.1016/j.chemosphere.2018.12.168] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Revised: 12/03/2018] [Accepted: 12/22/2018] [Indexed: 06/09/2023]
Abstract
The integrated sulfur- and Fe0-based autotrophic denitrification process in an anoxic fluidized-bed membrane bioreactor (AnFB-MBR) was developed for the nitrate-contaminated water treatment in order to control sulfate generation and avoid alkalinity supplement. The nitrate removal rate of the AnFB-MBR reached 1.22 g NO3--N L-1d-1 with NO3--N ranging 40-200 mg L-1 at hydraulic retention times of 1.0-5.0 h. The denitrification in the integrated system was simultaneously carried out by sulfur- and Fe0-oxidizing autotrophic denitrifiers. The effluent sulfate generation was decreased by 29.3-70.3% and 31.2-50.9% due to the functional role of Fe0-based denitrification in the integrated system. Alkalinity produced by Fe0-oxidizing autotrophic denitrification could compensate for the alkalinity consumption by sulfur-based autotrophic denitrification. The sulfur- and Fe0-oxidizing autotrophic denitrifying bacterial consortium was composed mainly of bacteria from Thiobacillus, Sulfurimonas, and Geothrix genera. The integrated modes leads to a harmonious co-existence of sulfur- and Fe0-oxidizing denitrifying microbes, which may make a difference to the functional performance of the bioreactor. Overall, the integrated sulfur- and Fe0-based autotrophic denitrification could overcome the shortcomings of excess sulfate generation and external alkalinity supplementation compared to the sole sulfur-based autotrophic denitrification, indicating further potential for the technology in practice.
Collapse
Affiliation(s)
- Lili Zhang
- Water Environmental Research Institute, Beijing Enterprise Water Group Limited, China; State Key Laboratory of Organic-Inorganic Composites and Research Center of the Ministry of Education for High Gravity Engineering and Technology, Beijing University of Chemical Technology, Beijing, 100029, China.
| | - Yunda Song
- Water Environmental Research Institute, Beijing Enterprise Water Group Limited, China; State Key Laboratory of Organic-Inorganic Composites and Research Center of the Ministry of Education for High Gravity Engineering and Technology, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Yu Zuo
- State Key Laboratory of Organic-Inorganic Composites and Research Center of the Ministry of Education for High Gravity Engineering and Technology, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Shan Huo
- State Key Laboratory of Organic-Inorganic Composites and Research Center of the Ministry of Education for High Gravity Engineering and Technology, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Cen Liang
- State Key Laboratory of Organic-Inorganic Composites and Research Center of the Ministry of Education for High Gravity Engineering and Technology, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Chengzhi Hu
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China.
| |
Collapse
|
27
|
Qian J, Zhou J, Pei X, Zhang M, Liu Y. Bioactivities and formation/utilization of soluble microbial products (SMP) in the biological sulfate reduction under different conditions. CHEMOSPHERE 2019; 221:37-44. [PMID: 30634147 DOI: 10.1016/j.chemosphere.2018.12.208] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Revised: 11/22/2018] [Accepted: 12/31/2018] [Indexed: 06/09/2023]
Abstract
The biological sulfate reduction (BSR) plays a critical role in the organic compound removal in the sulfur bioconversion-associated sewage treatment process. The soluble microbial products (SMP) are the major components of residual organic compounds in the secondary treatment effluent and its presence directly affects treatment capacity. In addition, the SMP could be one of the available organic substrates and be utilized as an electron donor in the bioreactions. However, the SMP formation and utilization in the BSR are poorly understood. Herein, the BSR activities and SMP generation/utilization were simultaneously investigated under different conditions, i.e. pH, temperature and ratio of organic carbon (C) to sulfur (S). The role of SMP as the electron donor for BSR was also identified. The higher BSR activities and rapid SMP synthesis were found under neutral and alkaline conditions, but the SMP utilization as the electron donor is not favorable at pH 7.0. The BSR activity became higher and more SMP was synthesized by raising the temperature. The ratio of C to S rarely affected the sulfidogenic activity but has an effect on the net SMP generation (total SMP generation - SMP consumption by SBR as the electron donor). The lower ratio of C/S could result in the low residual SMP level in the reactor. And the SMP-induced BSR activity was higher under the acid and alkaline conditions compared with the neutral condition.
Collapse
Affiliation(s)
- Jin Qian
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, China; Research and Development Institute in Shenzhen & School of Natural and Applied Sciences, Northwestern Polytechnical University, China.
| | - Junmei Zhou
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, China
| | - Xiangjun Pei
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, China.
| | - Mingkuan Zhang
- Research and Development Institute in Shenzhen & School of Natural and Applied Sciences, Northwestern Polytechnical University, China
| | - Yu Liu
- Advanced Environmental Biotechnology Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, 1 Cleantech Loop, CleanTech One, 637141, Singapore; School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
| |
Collapse
|
28
|
|
29
|
Mora M, Lafuente J, Gabriel D. Screening of biological sulfate reduction conditions for sulfidogenesis promotion using a methanogenic granular sludge. CHEMOSPHERE 2018; 210:557-566. [PMID: 30029148 DOI: 10.1016/j.chemosphere.2018.07.025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Revised: 07/01/2018] [Accepted: 07/05/2018] [Indexed: 06/08/2023]
Abstract
Effluents containing great amounts of oxidized sulfur compounds, such as sulfate or sulfite, can be valorized as elemental sulfur from a sequential reduction-oxidation biological process. However, the most important, challenging step to be optimized is the reduction of sulfate. The present study aimed at seeking out the optimal conditions to promote sulfidogenesis instead of methanogenesis using waste carbon sources and a methanogenic granular sludge. Crude glycerol showed better results in terms of the consumed COD/S-Sulfate ratio compared with acetate, cheese whey, pig slurry, and vinasse. Then, the screening of several conditions (T, pH, and COD/S-Sulfate ratio) and the effects of air presence and dissolved sulfide inhibition on sulfate reduction was carried out. Sulfidogenesis was promoted at 35 °C, pH = 8.5, COD/S-Sulfate ratio above 7.0 g O2 g-1 S, microaerophilic conditions, and dissolved sulfide concentrations below 250 mg S2- L-1. These conditions were tested for nearly 3 months in the startup and operation of a 2 L UASB reactor. An inlet sulfate concentration of 220 mg S L-1 and an HRT of 2 h were set. Removal efficiencies of approximately 90% were obtained with less than 20% of organic matter destined for biogas production.
Collapse
Affiliation(s)
- M Mora
- GENOCOV Research Group, Department of Chemical, Biological and Environmental Engineering, Escola d'Enginyeria, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
| | - J Lafuente
- GENOCOV Research Group, Department of Chemical, Biological and Environmental Engineering, Escola d'Enginyeria, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
| | - D Gabriel
- GENOCOV Research Group, Department of Chemical, Biological and Environmental Engineering, Escola d'Enginyeria, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain.
| |
Collapse
|
30
|
Qian J, Zhang M, Wu Y, Niu J, Chang X, Yao H, Hu S, Pei X. A feasibility study on biological nitrogen removal (BNR) via integrated thiosulfate-driven denitratation with anammox. CHEMOSPHERE 2018; 208:793-799. [PMID: 29906753 DOI: 10.1016/j.chemosphere.2018.06.060] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Revised: 06/04/2018] [Accepted: 06/08/2018] [Indexed: 06/08/2023]
Abstract
To exploit the advantages of less electron donor consumptions in partial-denitrification (denitratation, NO3- → NO2-) as well as less sludge production in autotrophic denitrification (AD) and anammox, a novel biological nitrogen removal (BNR) process through combined anammox and thiosulfate-driven denitratation was proposed here. In this study, the ratio of S2O32--S/NO3--N and pH are confirmed to be two key factors affecting the thiosulfate-driven denitratation activity and nitrite accumulation. Simultaneous high denitratation activity and substantial nitrite accumulation were observed at initial S2O32--S/NO3--N ratio of 1.5:1 and pH of 8.0. The optimal pH for the anammox reaction is determined to be 8.0. A sequential batch reactor (SBR) and an up-flow anaerobic sludge blanket (UASB) reactor were established to proceed the anammox and the high-rate thiosulfate-driven denitratation, respectively. Under the ambient temperature of 35 °C, the total nitrogen removal efficiency and capacity are 73% and 0.35 kg N/day/m3 in the anammox-SBR. At HRT of 30 min, the NO3- removal efficiency could achieve above 90% with the nitrate-to-nitrite transformation ratio of 0.8, implying the great potential to apply the thiosulfate-driven denitratation & anammox system for BNR with minimal sludge production. Without the occurrence of denitritation (NO2- → N2O → N2), theoretically no N2O could be emitted from this BNR system. This study could shed light on how to operate a high rate BNR system targeting to electron donor and energy savings as well as biowastes minimization and greenhouse gas reductions.
Collapse
Affiliation(s)
- Jin Qian
- Research and Development Institute in Shenzhen & School of Natural and Applied Sciences, Northwestern Polytechnical University, China; State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, China.
| | - Mingkuan Zhang
- Research and Development Institute in Shenzhen & School of Natural and Applied Sciences, Northwestern Polytechnical University, China
| | - Yaoguo Wu
- Research and Development Institute in Shenzhen & School of Natural and Applied Sciences, Northwestern Polytechnical University, China
| | - Juntao Niu
- Research and Development Institute in Shenzhen & School of Natural and Applied Sciences, Northwestern Polytechnical University, China
| | - Xing Chang
- Research and Development Institute in Shenzhen & School of Natural and Applied Sciences, Northwestern Polytechnical University, China
| | - Hairui Yao
- Research and Development Institute in Shenzhen & School of Natural and Applied Sciences, Northwestern Polytechnical University, China
| | - Sihai Hu
- Research and Development Institute in Shenzhen & School of Natural and Applied Sciences, Northwestern Polytechnical University, China
| | - Xiangjun Pei
- State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, China; School of Environment, Chengdu University of Technology, China.
| |
Collapse
|
31
|
Wei C, Wei L, Li C, Wei D, Zhao Y. Effects of salinity, C/S ratio, S/N ratio on the BESI process, and treatment of nanofiltration concentrate. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:5129-5139. [PMID: 28710731 DOI: 10.1007/s11356-017-9585-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Accepted: 06/19/2017] [Indexed: 06/07/2023]
Abstract
A laboratory-scale biodegradation and electron transfer based on the sulfur metabolism in the integrated (BESI®) process was used to treat a saline petrochemical nanofiltration concentrate (NFC). The integrated process consisted of activated sludge sulfate reduction (SR), and sulfide oxidation (SO) reactors, and a biofilm nitrification reactor. During the process, the total removal efficiencies of chemical oxygen demand (COD), ammonia nitrogen, and total nitrogen (TN) were 76.2, 83.8, and 73.1%, respectively. In the SR reactor, most of the organic degradation occurred and approximately 70% COD were removed by the sulfate-reducing bacteria (SRB). In the SO reactor, both the autotrophic and heterotrophic denitrifications were observed to take place. In parallel, batch experiments were conducted to detect the effects of different C/S and S/N ratios on COD removal and denitrification efficiency. The batch experiments were also conducted to detect the effects of salinity on COD and sulfate reduction. The composition of pollutants in the wastewater was complex, and some existing organics were not degraded by the SRB. The non-SRB groups also played important roles in the reactor. Under salinity-induced stress, the metabolisms of the SRBs and non-SRB groups were both inhibited. However, 6 g/L NaCl did not have much effect on the final COD removal efficiency. In the batch experiments, the added sulfide served as the electron donor for autotrophic denitrification. The added organics provided substance for heterotrophic denitrification.
Collapse
Affiliation(s)
- Chao Wei
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Li Wei
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China.
| | - Chunying Li
- School of Energy and Civil Engineering, Harbin University of Commerce, Harbin, 150028, China
| | - Dong Wei
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Yunfa Zhao
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China
| |
Collapse
|
32
|
Bahiraei A, Afkhami A, Madrakian T, Gheitaran R. Preparation and characterization of γ-Fe 2O 3 nanoparticles and investigation of its adsorption performance for sulfide, sulfite and thiosulfate from aqueous solutions using ultrasonic assisted method: Modeling and optimization. ULTRASONICS SONOCHEMISTRY 2018; 40:1049-1058. [PMID: 28946402 DOI: 10.1016/j.ultsonch.2017.08.035] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Revised: 08/04/2017] [Accepted: 08/28/2017] [Indexed: 06/07/2023]
Abstract
Maghemite nanoparticles, as an adsorbent, was used for the removal of sulfur species including sulfide, sulfite and thiosulfate from waste water samples by ultrasonic-assisted adsorption method. The characterization of the prepared nanoparticles was carried out by Fourier transform infrared spectroscopy, scanning electron microscopy, X-ray diffraction and BET technique. The nanoparticles well dispersed in the water. The adsorbent was easily separated magnetically from the solution after loading with adsorbate. According to central composite design, the best experimental conditions including initial pH, the dosage of adsorbent and sonication time were obtained for sulfide, sulfite and thiosulfate. After optimization of the parameters, the removal of analytes in these conditions lead to the highest analytes removal efficiency (above 98%). The adsorption capacity was evaluated using different adsorption isotherm models. The maximum predicted adsorption capacities for sulfide, sulfite and thiosulfate were obtained as 148.5, 122.5 and 119.6mgg-1, respectively. Then, desorption process of the adsorbed thiosulfate was also investigated using sodium hydroxide solution as the solvent and the other conditions affect to desorption were optimized.
Collapse
Affiliation(s)
| | - Abbas Afkhami
- Faculty of Chemistry, Bu-Ali Sina University, Hamedan, Iran.
| | | | | |
Collapse
|
33
|
The performance and microbial communities of biodegradation-electron transfer with sulfur metabolism integrated process for flue gas desulfurization wastewater treatment. Bioprocess Biosyst Eng 2017; 40:1543-1553. [DOI: 10.1007/s00449-017-1810-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2017] [Accepted: 06/29/2017] [Indexed: 11/25/2022]
|
34
|
Qian J, Wang L, Wu Y, Bond PL, Zhang Y, Chang X, Deng B, Wei L, Li Q, Wang Q. Free sulfurous acid (FSA) inhibition of biological thiosulfate reduction (BTR) in the sulfur cycle-driven wastewater treatment process. CHEMOSPHERE 2017; 176:212-220. [PMID: 28264778 DOI: 10.1016/j.chemosphere.2017.02.117] [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: 11/10/2016] [Revised: 02/20/2017] [Accepted: 02/23/2017] [Indexed: 06/06/2023]
Abstract
A sulfur cycle-based bioprocess for co-treatment of wet flue gas desulfurization (WFGD) wastes with freshwater sewage has been developed. In this process the removal of organic carbon is mainly associated with biological sulfate or sulfite reduction. Thiosulfate is a major intermediate during biological sulfate/sulfite reduction, and its reduction to sulfide is the rate-limiting step. In this study, the impacts of saline sulfite (the ionized form: HSO3- + SO32-) and free sulfurous acid (FSA, the unionized form: H2SO3) sourced from WGFD wastes on the biological thiosulfate reduction (BTR) activities were thoroughly investigated. The BTR activity and sulfate/sulfite-reducing bacteria (SRB) populations in the thiosulfate-reducing up-flow anaerobic sludge bed (UASB) reactor decreased when the FSA was added to the UASB influent. Batch experiment results confirmed that FSA, instead of saline sulfite, was the true inhibitor of BTR. And BTR activities dropped by 50% as the FSA concentrations were increased from 8.0 × 10-8 to 2.0 × 10-4 mg H2SO3-S/L. From an engineering perspective, the findings of this study provide some hints on how to ensure effective thiosulfate accumulation in biological sulfate/sulfite reduction for the subsequent denitrification/denitritation. Such manipulation would result in higher nitrogen removal rates in this co-treatment process of WFGD wastes with municipal sewage.
Collapse
Affiliation(s)
- Jin Qian
- Department of Applied Chemistry, School of Natural and Applied Sciences, Northwestern Polytechnical University, NO. 127 West Youyi Road, Xi'an 710072, China; State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, China; Research Center for Ecology and Environmental Sciences, Northwestern Polytechnical University, NO. 127 West Youyi Road, Xi'an 710072, China.
| | - Lianlian Wang
- Department of Applied Chemistry, School of Natural and Applied Sciences, Northwestern Polytechnical University, NO. 127 West Youyi Road, Xi'an 710072, China
| | - Yaoguo Wu
- Department of Applied Chemistry, School of Natural and Applied Sciences, Northwestern Polytechnical University, NO. 127 West Youyi Road, Xi'an 710072, China
| | - Philip L Bond
- Advanced Water Management Centre (AWMC), The University of Queensland, QLD 4072, Brisbane, Australia
| | - Yuhan Zhang
- Department of Applied Chemistry, School of Natural and Applied Sciences, Northwestern Polytechnical University, NO. 127 West Youyi Road, Xi'an 710072, China
| | - Xing Chang
- Department of Applied Chemistry, School of Natural and Applied Sciences, Northwestern Polytechnical University, NO. 127 West Youyi Road, Xi'an 710072, China
| | - Baixue Deng
- Department of Applied Chemistry, School of Natural and Applied Sciences, Northwestern Polytechnical University, NO. 127 West Youyi Road, Xi'an 710072, China
| | - Li Wei
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Qin Li
- Griffith School of Engineering, Griffith University, Nathan Campus, QLD 4111, Australia; Queensland Miro- and Nanotechnology Centre, Griffith University, Nathan, QLD 4111, Australia
| | - Qilin Wang
- Griffith School of Engineering, Griffith University, Nathan Campus, QLD 4111, Australia; Advanced Water Management Centre (AWMC), The University of Queensland, QLD 4072, Brisbane, Australia.
| |
Collapse
|
35
|
Kattel E, Dulova N. Ferrous ion-activated persulphate process for landfill leachate treatment: removal of organic load, phenolic micropollutants and nitrogen. ENVIRONMENTAL TECHNOLOGY 2017; 38:1223-1231. [PMID: 27564134 DOI: 10.1080/09593330.2016.1221472] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Accepted: 08/02/2016] [Indexed: 06/06/2023]
Abstract
The innovative [Formula: see text] treatment technology based on sulphate radicals induced oxidation was applied for the treatment of landfill leachate. The performance of chemical oxygen demand (COD) and dissolved organic carbon (DOC) removal in the Fe2+-activated persulphate system was moderate; however, the results of dissolved nitrogen (DN) and total phenols removal showed significant efficacy (≤39% and ≥87%, respectively). [Formula: see text] addition to the [Formula: see text] system enhanced the treatment efficacy and resulted in supplementary 15% of COD and 5% of DN removal. Hydroxyl radical-based H2O2/Fe2+ treatment of the landfill leachate was performed as well; the results indicated higher removal efficacy of COD and DOC compared to the [Formula: see text] system. However, practical application of the H2O2/Fe2+ system is considerably influenced by temperature rise and excessive foam formation. Generally, the ferrous ion-activated persulphate treatment could be a promising technology for ex situ as well as in situ landfill leachate treatment applications.
Collapse
Affiliation(s)
- Eneliis Kattel
- a Department of Chemical Engineering , Tallinn University of Technology , Ehitajate tee 5, Tallinn , Estonia
| | - Niina Dulova
- a Department of Chemical Engineering , Tallinn University of Technology , Ehitajate tee 5, Tallinn , Estonia
| |
Collapse
|
36
|
Chen Y, Wen Y, Zhou Q, Huang J, Vymazal J, Kuschk P. Sulfate removal and sulfur transformation in constructed wetlands: The roles of filling material and plant biomass. WATER RESEARCH 2016; 102:572-581. [PMID: 27423407 DOI: 10.1016/j.watres.2016.07.001] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Revised: 07/01/2016] [Accepted: 07/02/2016] [Indexed: 06/06/2023]
Abstract
Sulfate in effluent is a challenging issue for wastewater reuse around the world. In this study, sulfur (S) removal and transformation in five batch constructed wetlands (CWs) treating secondary effluent were investigated. The results showed that the presence of the plant cattail (Typha latifolia) had little effect on sulfate removal, while the carbon-rich litter it generated greatly improved sulfate removal, but with limited sulfide accumulation in the pore-water. After sulfate removal, most of the S was deposited with the valence states S (-II) and S (0) on the iron-rich gravel surface, and acid volatile sulfide was the main S sink in the litter-added CWs. High-throughput pyrosequencing revealed that sulfate-reducing bacteria (i.e. Desulfobacter) and sulfide-oxidizing bacteria (i.e. Thiobacillus) were dominant in the litter-added CWs, which led to a sustainable S cycle between sulfate and sulfide. Overall, this study suggests that recycling plant litter and iron-rich filling material in CWs gives an opportunity to utilize the S in the wastewater as both an electron acceptor for sulfate reduction and as an electron donor for nitrate reduction coupled with sulfide oxidation. This leads to the simultaneous removal of sulfate, nitrate, and organics without discharging toxic sulfide into the receiving water body.
Collapse
Affiliation(s)
- Yi Chen
- Key Laboratory of Yangtze Water Environment of Ministry of the State Education, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China; Department of Applied Ecology, Faculty of Environmental Sciences, Czech University of Life Sciences, Prague, 16521, Czech Republic
| | - Yue Wen
- Key Laboratory of Yangtze Water Environment of Ministry of the State Education, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China.
| | - Qi Zhou
- Key Laboratory of Yangtze Water Environment of Ministry of the State Education, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China
| | - Jingang Huang
- Institute of Environmental Science and Engineering, Hangzhou Dianzi University, Hangzhou 310018, PR China
| | - Jan Vymazal
- Department of Applied Ecology, Faculty of Environmental Sciences, Czech University of Life Sciences, Prague, 16521, Czech Republic
| | - Peter Kuschk
- Department of Environmental Biotechnology, Helmholtz Centre for Environmental Research -UFZ, Permoserstr. 15, Leipzig, 04318, Germany
| |
Collapse
|
37
|
Zhang L, Lin X, Wang J, Jiang F, Wei L, Chen G, Hao X. Effects of Lead and Mercury on Sulfate-Reducing Bacterial Activity in a Biological Process for Flue Gas Desulfurization Wastewater Treatment. Sci Rep 2016; 6:30455. [PMID: 27455890 PMCID: PMC4960525 DOI: 10.1038/srep30455] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2015] [Accepted: 07/04/2016] [Indexed: 01/01/2023] Open
Abstract
Biological sulfate-reducing bacteria (SRB) may be effective in removing toxic lead and mercury ions (Pb(II) and Hg(II)) from wet flue gas desulfurization (FGD) wastewater through anaerobic sulfite reduction. To confirm this hypothesis, a sulfite-reducing up-flow anaerobic sludge blanket reactor was set up to treat FGD wastewater at metal loading rates of 9.2 g/m3-d Pb(II) and 2.6 g/m3-d Hg(II) for 50 days. The reactor removed 72.5 ± 7% of sulfite and greater than 99.5% of both Hg(II) and Pb(II). Most of the removed lead and mercury were deposited in the sludge as HgS and PbS. The contribution of cell adsorption and organic binding to Pb(II) and Hg(II) removal was 20.0 ± 0.1% and 1.8 ± 1.0%, respectively. The different bioavailable concentration levels of lead and mercury resulted in different levels of lethal toxicity. Cell viability analysis revealed that Hg(II) was less toxic than Pb(II) to the sludge microorganisms. In the batch tests, increasing the Hg(II) feeding concentration increased sulfite reduction rates. In conclusion, a sulfite-reducing reactor can efficiently remove sulfite, Pb(II) and Hg(II) from FGD wastewater.
Collapse
Affiliation(s)
- Liang Zhang
- School of Chemistry &Environment, South China Normal University, Guangzhou, China
| | - Xiaojuan Lin
- School of Chemistry &Environment, South China Normal University, Guangzhou, China.,SYSU-HKUST Research Center for Innovation Environmental Technology, Sun Yat-sen University, Guangzhou, China
| | - Jinting Wang
- School of Chemistry &Environment, South China Normal University, Guangzhou, China
| | - Feng Jiang
- School of Chemistry &Environment, South China Normal University, Guangzhou, China.,Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education, Guangzhou, China
| | - Li Wei
- Department of Civil &Environmental Engineering, The Hong Kong University of Science and Technology, Clear Water, Kowloon, Hong Kong, China
| | - Guanghao Chen
- Department of Civil &Environmental Engineering, The Hong Kong University of Science and Technology, Clear Water, Kowloon, Hong Kong, China
| | - Xiaodi Hao
- Key Laboratory of Urban Stormwater System and Water Environment -MoU/R and D Center for Sustainable Wastewater Treatment, Beijing University of Civil Engineering and Architecture, Beijing, China
| |
Collapse
|
38
|
Biological Nitrogen Removal through Nitritation Coupled with Thiosulfate-Driven Denitritation. Sci Rep 2016; 6:27502. [PMID: 27272192 PMCID: PMC4897740 DOI: 10.1038/srep27502] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2016] [Accepted: 05/19/2016] [Indexed: 11/21/2022] Open
Abstract
A novel biological nitrogen removal system based on nitritation coupled with thiosulfate-driven denitritation (Nitritation-TDD) was developed to achieve a high nitrogen removal rate and low sludge production. A nitritation sequential batch reactor (nitritation SBR) and an anoxic up-flow sludge bed (AnUSB) reactor were applied for effective nitritation and denitritation, respectively. Above 75% nitrite was accumulated in the nitritation SBR with an influent ammonia loading rate of 0.43 kg N/d/m3. During Nitritation-TDD operation, particle sizes (d50) of the sludge decreased from 406 to 225 um in nitritation SBR and from 327–183 um in AnUSB reactor. Pyrosequencing tests revealed that ammonium-oxidizing bacteria (AOB) population was stabilized at approximately 7.0% (calculated as population of AOB-related genus divided by the total microbial population) in the nitritation SBR. In contrast, nitrite-oxidizing bacteria (NOB) population decreased from 6.5–0.6% over the same time, indicating the effective nitrite accumulation in the nitritation SBR. Thiobacillus, accounting for 34.2% in the AnUSB reactor, was mainly responsible for nitrogen removal via autotrophic denitritation, using an external source of thiosulfate as electron donor. Also, it was found that free nitrous acid could directly affect the denitritation activity.
Collapse
|
39
|
Qian J, Wei L, Liu R, Jiang F, Hao X, Chen GH. An Exploratory Study on the Pathways of Cr (VI) Reduction in Sulfate-reducing Up-flow Anaerobic Sludge Bed (UASB) Reactor. Sci Rep 2016; 6:23694. [PMID: 27021522 PMCID: PMC4810426 DOI: 10.1038/srep23694] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Accepted: 03/10/2016] [Indexed: 11/22/2022] Open
Abstract
Electroplating wastewater contains both Cr (VI) and sulfate. So Cr (VI) removal under sulfate-rich condition is quite complicated. This study mainly investigates the pathways for Cr (VI) removal under biological sulfate-reducing condition in the up-flow anaerobic sludge bed (UASB) reactor. Two potential pathways are found for the removal of Cr (VI). The first one is the sulfidogenesis-induced Cr (VI) reduction pathway (for 90% Cr (VI) removal), in which Cr (VI) is reduced by sulfide generated from biological reduction of sulfate. The second one leads to direct reduction of Cr (VI) which is utilized by bacteria as the electron acceptor (for 10% Cr (VI) removal). Batch test results confirmed that sulfide was oxidized to elemental sulfur instead of sulfate during Cr (VI) reduction. The produced extracellular polymeric substances (EPS) provided protection to the microbes, resulting in effective removal of Cr (VI). Sulfate-reducing bacteria (SRB) genera accounted for 11.1% of the total bacterial community; thus they could be the major organisms mediating the sulfidogenesis-induced reduction of Cr (VI). In addition, chromate-utilizing genera (e.g. Microbacterium) were also detected, which were possibly responsible for the direct reduction of Cr (VI) using organics as the electron donor and Cr (VI) as the electron acceptor.
Collapse
Affiliation(s)
- Jin Qian
- School of Natural and Applied Sciences, Northwestern Polytechnical University, Xi'an, China.,Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Li Wei
- Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China.,Wastewater Treatment Laboratory, FYT Graduate School, The Hong Kong University of Science and Technology, Nansha, Guangzhou, China
| | - Rulong Liu
- Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Feng Jiang
- School of Chemistry &Environment, South China Normal University, Guangzhou, China
| | - Xiaodi Hao
- Beijing University of Civil Engineering and Architecture, Beijing, China
| | - Guang-Hao Chen
- Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China.,Water Technology Center, The Hong Kong University of Science and Technology, Hong Kong, China.,Hong Kong Branch of Chinese National Engineering Research Center for Control &Treatment of Heavy Metal Pollution, The Hong Kong University of Science and Technology, Hong Kong, China.,Wastewater Treatment Laboratory, FYT Graduate School, The Hong Kong University of Science and Technology, Nansha, Guangzhou, China
| |
Collapse
|
40
|
Xu G, Yin F, Chen S, Xu Y, Yu HQ. Mathematical modeling of autotrophic denitrification (AD) process with sulphide as electron donor. WATER RESEARCH 2016; 91:225-234. [PMID: 26799712 DOI: 10.1016/j.watres.2016.01.011] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2015] [Revised: 12/01/2015] [Accepted: 01/07/2016] [Indexed: 06/05/2023]
Abstract
Autotrophic denitrification (AD) plays a critical role in nitrate removal from organic carbon-deficient wastewaters with a high level of nitrogen oxides. However, the AD process is not included in the current denitrification models, which limits the application of AD technology for wastewater treatment. In this work, a kinetic model for AD process involved 4 processes and 5 components with 9 parameters is established to describe the sulphide biooxidation and nitrite removal process. In this model, 4 oxidation-reduction reactions using sulphide as electronic donor in the AD process are taken into account. The model parameters are optimized by fitting data from the experiments with different combinations of sulphide, sulphur, sulphate, nitrate and nitrite at various concentrations. Model calibration and validation results demonstrate that the developed model is able to reasonably describe the removal rates of nitrate, nitrite, sulphide and sulphur in the AD process. The model simulation results also show that the sulphur term (η(S)) in the kinetic equations of nitrate, nitrite, sulphur and sulphate remains constant, rather than being controlled by its own concentration. Furthermore, with this model the products of sulphide biooxidation in the AD process, sulphur and sulphate, and their concentrations can be accurately predicted. Therefore, this model provides a strategy to control the sulphate concentration below the discharge limits or recover sulphur as the main end product from sulphide biooxidation.
Collapse
Affiliation(s)
- Guihua Xu
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Chemistry, University of Science and Technology of China, Hefei 230026, China; Key Laboratory of Reservoir Aquatic Environment, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China; Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
| | - Fengjun Yin
- Key Laboratory of Reservoir Aquatic Environment, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China
| | - Shaohua Chen
- Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China.
| | - Yuanjian Xu
- Key Laboratory of Reservoir Aquatic Environment, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China
| | - Han-Qing Yu
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Chemistry, University of Science and Technology of China, Hefei 230026, China.
| |
Collapse
|
41
|
Zan F, Hao T, Chi K, Ekama GA, Chen G. Using sulfite pretreatment to improve the biodegradability of waste activated sludge. RSC Adv 2016. [DOI: 10.1039/c6ra07510j] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Significant improvement (∼51%) in biodegradability of waste activated sludge with sulfite pretreatment.
Collapse
Affiliation(s)
- Feixiang Zan
- Department of Civil and Environmental Engineering
- The Hong Kong University of Science and Technology
- Hong Kong
- China
| | - Tianwei Hao
- Department of Civil and Environmental Engineering
- The Hong Kong University of Science and Technology
- Hong Kong
- China
| | - Kun Chi
- Department of Civil and Environmental Engineering
- The Hong Kong University of Science and Technology
- Hong Kong
- China
| | - George A. Ekama
- Water Research Group
- Department of Civil Engineering
- University of Cape Town
- South Africa
| | - Guanghao Chen
- Department of Civil and Environmental Engineering
- The Hong Kong University of Science and Technology
- Hong Kong
- China
- Water Technology Lab
| |
Collapse
|
42
|
Pourjavadi A, Abedin-Moghanaki A, Tavakoli A. Efficient removal of cationic dyes using a new magnetic nanocomposite based on starch-g-poly(vinylalcohol) and functionalized with sulfate groups. RSC Adv 2016. [DOI: 10.1039/c6ra02517j] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A new magnetic nano-adsorbent has been prepared based on graft copolymerization of vinyl acetate onto starch in the presence of magnetic nanoparticles followed by the sulfation of the hydroxyl groups using chlorosulfonic acid.
Collapse
Affiliation(s)
- Ali Pourjavadi
- Polymer Research Laboratory
- Department of Chemistry
- Sharif University of Technology
- Tehran
- Iran
| | | | - Amir Tavakoli
- Polymer Research Laboratory
- Department of Chemistry
- Sharif University of Technology
- Tehran
- Iran
| |
Collapse
|
43
|
Zhang Z, Lo IMC, Yan DYS. An integrated bioremediation process for petroleum hydrocarbons removal and odor mitigation from contaminated marine sediment. WATER RESEARCH 2015; 83:21-30. [PMID: 26117370 DOI: 10.1016/j.watres.2015.06.022] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2015] [Revised: 06/08/2015] [Accepted: 06/14/2015] [Indexed: 06/04/2023]
Abstract
This study developed a novel integrated bioremediation process for the removal of petroleum hydrocarbons and the mitigation of odor induced by reduced sulfur from contaminated marine sediment. The bioremediation process consisted of two phases. In Phase I, acetate was dosed into the sediment as co-substrate to facilitate the sulfate reduction process. Meanwhile, akaganeite (β-FeOOH) was dosed in the surface layer of the sediment to prevent S(2-) release into the overlying seawater. In Phase II, NO3(-) was injected into the sediment as an electron acceptor to facilitate the denitrification process. After 20 weeks of treatment, the sequential integration of the sulfate reduction and denitrification processes led to effective biodegradation of total petroleum hydrocarbons (TPH), in which about 72% of TPH was removed. In Phase I, the release of S(2-) was effectively controlled by the addition of akaganeite. The oxidation of S(2-) by Fe(3+) and the precipitation of S(2-) by Fe(2+) were the main mechanisms for S(2-) removal. In Phase II, the injection of NO3(-) completely inhibited the sulfate reduction process. Most of residual AVS and S(0) were removed within 4 weeks after NO3(-) injection. The 16S rRNA clone library-based analysis revealed a distinct shift of bacterial community structure in the sediment over different treatment phases. The clones affiliated with Desulfobacterales and Desulfuromonadales were the most abundant in Phase I, while the clones related to Thioalkalivibrio sulfidophilus, Thiohalomonas nitratireducens and Sulfurimonas denitrificans predominated in Phase II.
Collapse
Affiliation(s)
- Zhen Zhang
- Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Hong Kong, China
| | - Irene M C Lo
- Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Hong Kong, China.
| | - Dickson Y S Yan
- Faculty of Science and Technology, Technological and Higher Education Institute of Hong Kong, Hong Kong, China
| |
Collapse
|
44
|
Qian J, Liu R, Wei L, Lu H, Chen GH. System evaluation and microbial analysis of a sulfur cycle-based wastewater treatment process for Co-treatment of simple wet flue gas desulfurization wastes with freshwater sewage. WATER RESEARCH 2015; 80:189-199. [PMID: 26001823 DOI: 10.1016/j.watres.2015.05.005] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2014] [Revised: 03/24/2015] [Accepted: 05/01/2015] [Indexed: 06/04/2023]
Abstract
A sulfur cycle-based wastewater treatment process, namely the Sulfate reduction, Autotrophic denitrification and Nitrification Integrated process (SANI(®) process) has been recently developed for organics and nitrogen removal with 90% sludge minimization and 35% energy reduction in the biological treatment of saline sewage from seawater toilet flushing practice in Hong Kong. In this study, sulfate- and sulfite-rich wastes from simple wet flue gas desulfurization (WFGD) were considered as a potential low-cost sulfur source to achieve beneficial co-treatment with non-saline (freshwater) sewage in continental areas, through a Mixed Denitrification (MD)-SANI process trialed with synthetic mixture of simple WFGD wastes and freshwater sewage. The system showed 80% COD removal efficiency (specific COD removal rate of 0.26 kg COD/kg VSS/d) at an optimal pH of 7.5 and complete denitrification through MD (specific nitrogen removal rate of 0.33 kg N/kg VSS/d). Among the electron donors in MD, organics and thiosulfate could induce a much higher denitrifying activity than sulfide in terms of both NO3(-) reduction and NO2(-) reduction, suggesting a much higher nitrogen removal rate in organics-, thiosulfate- and sulfide-based MD in MD-SANI compared to sulfide alone-based autotrophic denitrification in conventional SANI(®). Diverse sulfate/sulfite-reducing bacteria (SRB) genera dominated in the bacterial community of sulfate/sulfite-reducing up-flow sludge bed (SRUSB) sludge without methane producing bacteria detected. Desulfomicrobium-like species possibly for sulfite reduction and Desulfobulbus-like species possibly for sulfate reduction are the two dominant groups with respective abundance of 24.03 and 14.91% in the SRB genera. Diverse denitrifying genera were identified in the bacterial community of anoxic up-flow sludge bed (AnUSB) sludge and the Thauera- and Thiobacillus-like species were the major taxa. These results well explained the successful operation of the lab-scale MD-SANI process.
Collapse
Affiliation(s)
- Jin Qian
- Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Rulong Liu
- Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Li Wei
- Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Hui Lu
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, China.
| | - Guang-Hao Chen
- Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China.
| |
Collapse
|
45
|
Gong G, Zhang F, Cheng Z, Zhou L. Facile fabrication of magnetic carboxymethyl starch/poly(vinyl alcohol) composite gel for methylene blue removal. Int J Biol Macromol 2015; 81:205-11. [PMID: 26234575 DOI: 10.1016/j.ijbiomac.2015.07.061] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2015] [Revised: 07/22/2015] [Accepted: 07/29/2015] [Indexed: 11/24/2022]
Abstract
This study presents a simple method to fabricate magnetic carboxymethyl starch/poly(vinyl alcohol) (mCMS/PVA) composite gel. The obtained mCMS/PVA was characterized by Fourier transform infrared (FTIR) spectra, vibrating-sample magnetometer (VSM) and scanning electron microscopy (SEM) measurements. The application of mCMS/PVA as an adsorbent for removal of cationic methylene blue (MB) dye from water was investigated. Benefiting from the combined merits of carboxymethyl starch and magnetic gel, the mCMS/PVA simultaneously exhibited excellent adsorption property toward MB and convenient magnetic separation capability. The effects of initial dye concentration, contact time, pH and ionic strength on the adsorption performance of mCMS/PVA adsorbent were investigated systematically. The adsorption process of mCMS/PVA for MB fitted pseudo-second-order model and Freundlich isotherm. Moreover, desorption experiments revealed that the mCMS/PVA adsorbent could be well regenerated in ethanol solution without obvious compromise of removal efficiency even after eight cycles of desorption/adsorption. Considering the facile fabrication process and robust adsorption performance, the mCMS/PVA composite gel has great potential as a low cost adsorbent for environmental decontamination.
Collapse
Affiliation(s)
- Guisheng Gong
- Guangxi Ministry-Province Jointly-Constructed Cultivation Base for State Key Laboratory of Processing for Nonferrous Metal and Featured Materials, Key Laboratory of New Processing Technology for Nonferrous Metal and Materials (Ministry of Education), Guilin University of Technology, Guilin 541004, PR China; College of Material Science and Engineering, Guilin University of Technology, Guilin 541004, PR China
| | - Faai Zhang
- Guangxi Ministry-Province Jointly-Constructed Cultivation Base for State Key Laboratory of Processing for Nonferrous Metal and Featured Materials, Key Laboratory of New Processing Technology for Nonferrous Metal and Materials (Ministry of Education), Guilin University of Technology, Guilin 541004, PR China; College of Material Science and Engineering, Guilin University of Technology, Guilin 541004, PR China.
| | - Zehong Cheng
- Guangxi Ministry-Province Jointly-Constructed Cultivation Base for State Key Laboratory of Processing for Nonferrous Metal and Featured Materials, Key Laboratory of New Processing Technology for Nonferrous Metal and Materials (Ministry of Education), Guilin University of Technology, Guilin 541004, PR China; College of Material Science and Engineering, Guilin University of Technology, Guilin 541004, PR China
| | - Li Zhou
- Guangxi Ministry-Province Jointly-Constructed Cultivation Base for State Key Laboratory of Processing for Nonferrous Metal and Featured Materials, Key Laboratory of New Processing Technology for Nonferrous Metal and Materials (Ministry of Education), Guilin University of Technology, Guilin 541004, PR China; College of Material Science and Engineering, Guilin University of Technology, Guilin 541004, PR China.
| |
Collapse
|
46
|
Biostimulation of petroleum-hydrocarbon-contaminated marine sediment with co-substrate: involved metabolic process and microbial community. Appl Microbiol Biotechnol 2015; 99:5683-96. [PMID: 25661814 DOI: 10.1007/s00253-015-6420-9] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2014] [Revised: 01/14/2015] [Accepted: 01/18/2015] [Indexed: 10/24/2022]
Abstract
This study investigated the effect of acetate and methanol as co-substrates on anaerobic biodegradation of total petroleum hydrocarbons (TPHs, C10-C40) in marine sediment. The findings evidenced that the degradation of TPH can be enhanced by adding acetate or methanol. The addition of acetate was generally more favorable than the addition of methanol for the TPH degradation. Both sulfate reduction and methanogenesis occurred in the acetate-treated sediment. However, the depletion of SO4 (2-) inhibited sulfate reduction over the incubation period. Only methanogenesis was prevalent in the methanol-treated sediment within the whole incubation period. The degradation of TPH fractions with higher carbon number ranges (C31-C40) was speculated to be more favored under sulfate-reducing condition, while TPH fractions with lower carbon number ranges (C10-C20) were preferentially degraded under methanogenic condition. The 16S rRNA clone library-based analysis revealed that the addition of different co-substrates led to distinct structures of the microbial community. Clones related to sulfate-reducing Desulfobacterales were the most abundant in the sediment dosed with acetate. Clones related to Clostridiales predominated in the sediment dosed with methanol. Acetoclastic methanogens were found to be the predominant archaeal species in the sediment dosed with acetate, while both acetoclastic methanogens and hydrogenotrophic methanogens accounted for large proportions in the sediment dosed with methanol. The results obtained in this study will contribute to more comprehensive knowledge on the role of acetate and methanol as co-substrates in biostimulation of petroleum-hydrocarbon-contaminated marine sediment.
Collapse
|