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Linssen R, de Smit S, Röhring Neé Neubert K, Harnisch F, Ter Heijne A. Revealing cellular (poly)sulphide storage in electrochemically active sulphide oxidising bacteria using rotating disc electrodes. Bioelectrochemistry 2024; 158:108710. [PMID: 38636364 DOI: 10.1016/j.bioelechem.2024.108710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 04/11/2024] [Accepted: 04/12/2024] [Indexed: 04/20/2024]
Abstract
Sulphide oxidising bacteria (SOB) have the potential to be used for bioelectrochemical removal, i.e. oxidation, of sulphide from waste streams. In anaerobic conditions, SOB are able to spatially separate sulphide removal and terminal electron transfer to an electrode and act as a sulphide shuttle. However, it is not fully understood how SOB anaerobically remove sulphide and store charge equivalents, and where in this process sulphur is formed. Therefore, the redox behaviour of sulphide shuttling SOB was investigated at haloalkaline conditions using a glassy carbon rotating disc electrode (RDE) and cyclic voltammetry. Voltammograms of SOB in the absence and presence of sulphide were compared to voltammograms of abiotic sulphur species solutions. Polysulphide and sulphide showed different redox behaviour, with distinct potentials for oxidation of > -0.3 V (vs. Ag/AgCl) for polysulphide and > -0.1 V for sulphide. Comparing biotic to abiotic experiments lead to the hypothesis that SOB formed polysulphides during anaerobic sulphide removal, which stayed sorbed to the cells. With this study, further steps were taken in elucidating the mechanisms of sulphide shuttling by SOB.
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Affiliation(s)
- Rikke Linssen
- Environmental Technology, Wageningen University, P.O. Box 17, Bornse Weilanden 9, 6708 WG, Building Axis z, building nr. 118, 6700 AA Wageningen, the Netherlands
| | - Sanne de Smit
- Environmental Technology, Wageningen University, P.O. Box 17, Bornse Weilanden 9, 6708 WG, Building Axis z, building nr. 118, 6700 AA Wageningen, the Netherlands
| | - Katharina Röhring Neé Neubert
- Department of Microbial Biotechnology, Helmholtz-Centre for Environmental Research GmbH - UFZ, Permoserstrasse 15, 04318 Leipzig, Germany
| | - Falk Harnisch
- Department of Microbial Biotechnology, Helmholtz-Centre for Environmental Research GmbH - UFZ, Permoserstrasse 15, 04318 Leipzig, Germany
| | - Annemiek Ter Heijne
- Environmental Technology, Wageningen University, P.O. Box 17, Bornse Weilanden 9, 6708 WG, Building Axis z, building nr. 118, 6700 AA Wageningen, the Netherlands.
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2
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Gupta S, Plugge CM, Muyzer G, Sánchez-Andrea I. Harnessing the potential of the microbial sulfur cycle for environmental biotechnology. Curr Opin Biotechnol 2024; 88:103164. [PMID: 38964081 DOI: 10.1016/j.copbio.2024.103164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Revised: 05/27/2024] [Accepted: 06/03/2024] [Indexed: 07/06/2024]
Abstract
The sulfur cycle is a complex biogeochemical cycle characterized by the high variability in the oxidation states of sulfur. While sulfur is essential for life processes, certain sulfur compounds, such as hydrogen sulfide, are toxic to all life forms. Micro-organisms facilitate the sulfur cycle, playing a prominent role even in extreme environments, such as soda lakes, acid mine drainage sites, hot springs, and other harsh habitats. The activity of these micro-organisms presents unique opportunities for mitigating sulfur-based pollution and enhancing the recovery of sulfur and metals. This review highlights the application of sulfur-oxidizing and -reducing micro-organisms in environmental biotechnology through three illustrative examples. Additionally, it discusses the challenges, recent trends, and prospects associated with these applications.
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Affiliation(s)
- Suyash Gupta
- Wetsus, European Centre of Excellence for Sustainable Water Technology, Leeuwarden, the Netherlands; Microbial Systems Ecology, Department of Freshwater and Marine Ecology, Institute or Biodiversity and Ecosystem Dynamics, University of Amsterdam, Amsterdam, the Netherlands
| | - Caroline M Plugge
- Wetsus, European Centre of Excellence for Sustainable Water Technology, Leeuwarden, the Netherlands; Laboratory of Microbiology, Wageningen University & Research, Wageningen, the Netherlands
| | - Gerard Muyzer
- Microbial Systems Ecology, Department of Freshwater and Marine Ecology, Institute or Biodiversity and Ecosystem Dynamics, University of Amsterdam, Amsterdam, the Netherlands.
| | - Irene Sánchez-Andrea
- Environmental Science for Sustainability Department, IE Universidad, Segovia, Spain
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3
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Wang Z, Wang QN, Ma W, Liu T, Zhang W, Zhou P, Li M, Liu X, Chang Q, Zheng H, Chang B, Li C. Hydrogen Sulfide Splitting into Hydrogen and Sulfur through Off-Field Electrocatalysis. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024; 58:10515-10523. [PMID: 38622088 DOI: 10.1021/acs.est.4c00312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/17/2024]
Abstract
Hydrogen sulfide (H2S), a toxic gas abundant in natural gas fields and refineries, is currently being removed mainly via the Claus process. However, the emission of sulfur-containing pollutants is hard to be prevented and the hydrogen element is combined to water. Herein, we report an electron-mediated off-field electrocatalysis approach (OFEC) for complete splitting of H2S into H2 and S under ambient conditions. Fe(III)/Fe(II) and V(II)/V(III) redox mediators are used to fulfill the cycles for H2S oxidation and H2 production, respectively. Fe(III) effectively removes H2S with almost 100% conversion during its oxidation process. The H+ ions are reduced by V(II) on a nonprecious metal catalyst, tungsten carbide. The mediators are regenerated in an electrolyzer at a cell voltage of 1.05 V, close to the theoretical potential difference (1.02 V) between Fe(III)/Fe(II) and V(II)/V(III). In a laboratory bench-scale plant, the energy consumption for the production of H2 from H2S is estimated to be 2.8 kWh Nm-3 H2 using Fe(III)/Fe(II) and V(II)/V(III) mediators and further reduced to about 0.5 kWh Nm-3 H2 when employing well-designed heteropolyacid/quinone mediators. OFEC presents a cost-effective approach for the simultaneous production of H2 and elemental sulfur from H2S, along with the complete removal of H2S from industrial processes. It also provides a practical platform for electrochemical reactions involving solid precipitation and organic synthesis.
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Affiliation(s)
- Zijin Wang
- State Key Laboratory of Catalysis, Fundamental Research Center of Artificial Photosynthesis (FReCAP), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Qing-Nan Wang
- State Key Laboratory of Catalysis, Fundamental Research Center of Artificial Photosynthesis (FReCAP), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Weiguang Ma
- Marine Engineering College, Clean Energy Center for Ship, Dalian Maritime University, Dalian 116026, China
| | - Tiefeng Liu
- State Key Laboratory of Catalysis, Fundamental Research Center of Artificial Photosynthesis (FReCAP), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Wei Zhang
- State Key Laboratory of Catalysis, Fundamental Research Center of Artificial Photosynthesis (FReCAP), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Panwang Zhou
- State Key Laboratory of Catalysis, Fundamental Research Center of Artificial Photosynthesis (FReCAP), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Mingrun Li
- State Key Laboratory of Catalysis, Fundamental Research Center of Artificial Photosynthesis (FReCAP), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Xinyi Liu
- State Key Laboratory of Catalysis, Fundamental Research Center of Artificial Photosynthesis (FReCAP), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Qingbo Chang
- State Key Laboratory of Catalysis, Fundamental Research Center of Artificial Photosynthesis (FReCAP), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Haibing Zheng
- State Key Laboratory of Catalysis, Fundamental Research Center of Artificial Photosynthesis (FReCAP), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Ben Chang
- State Key Laboratory of Catalysis, Fundamental Research Center of Artificial Photosynthesis (FReCAP), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Can Li
- State Key Laboratory of Catalysis, Fundamental Research Center of Artificial Photosynthesis (FReCAP), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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4
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Zhang J, Li X, Qian A, Xu X, Lv Y, Zhou X, Yang X, Zhu W, Zhang H, Ding Y. Effects of operating conditions on the in situ control of sulfur-containing odors by using a novel alternative landfill cover and its transformation mechanism. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:7959-7976. [PMID: 38175505 DOI: 10.1007/s11356-023-31721-z] [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: 08/14/2023] [Accepted: 12/21/2023] [Indexed: 01/05/2024]
Abstract
Sulfur-containing gases are main sources of landfill odors, which has become a big issue for pollution to environment and human health. Biocover is promising for treating landfill odors, with advantages of durability and environmental friendliness. In this study, charcoal sludge compost was utilized as the main effective component of a novel alternative landfill cover and the in situ control of sulfur-containing odors from municipal solid waste landfilling process was simulated under nine different operating conditions. Results showed that five sulfur-containing odors (hydrogen sulfide, H2S; methyl mercaptan, CH3SH; dimethyl sulfide, CH3SCH3; ethylmercaptan, CH3CH2SH; carbon disulfide, CS2) were monitored and removed by the biocover, with the highest removal efficiencies of 77.18% for H2S, 87.36% for CH3SH, and 92.19% for CH3SCH3 in reactor 8#, and 95.94% for CH3CH2SH and 94.44% for CS2 in reactor 3#. The orthogonal experiment showed that the factors influencing the removal efficiencies of sulfur-containing odors were ranked from high to low as follows: temperature > weight ratio > humidity content. The combination of parameters of 20% weight ratio, 25°C temperature, and 30% water content was more recommended based on the consideration of the removal efficiencies and economic benefits. The mechanisms of sulfur conversion inside biocover were analyzed. Most organic sulfur was firstly degraded to reduced sulfides or element sulfur, and then oxidized to sulfate which could be stable in the layer as the final state. In this process, sulfur-oxidizing bacteria play a great role, and the distribution of them in reactor 1#, 5#, and 8# was specifically monitored. Bradyrhizobiaceae and Rhodospirillaceae were the dominant species which can utilize sulfide as substance to produce sulfate and element sulfur, respectively. Based on the results of OUTs, the biodiversity of these sulfur-oxidizing bacteria, these microorganisms, was demonstrated to be affected by the different parameters. These results indicate that the novel alternative landfill cover modified with bamboo charcoal compost is effective in removing sulfur odors from landfills. Meanwhile, the findings have direct implications for addressing landfill odor problems through parameter adjustment.
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Affiliation(s)
- Jiayi Zhang
- Department of Environmental Science and Engineering, Hangzhou Normal University, Hangzhou, 310036, People's Republic of China
| | - Xiaowen Li
- Department of Environmental Science and Engineering, Hangzhou Normal University, Hangzhou, 310036, People's Republic of China
| | - Aiai Qian
- Department of Environmental Science and Engineering, Hangzhou Normal University, Hangzhou, 310036, People's Republic of China
| | - Xianwen Xu
- Department of Environmental Science and Engineering, Hangzhou Normal University, Hangzhou, 310036, People's Republic of China
| | - Ya Lv
- Department of Environmental Science and Engineering, Hangzhou Normal University, Hangzhou, 310036, People's Republic of China
| | - Xinrong Zhou
- Department of Environmental Science and Engineering, Hangzhou Normal University, Hangzhou, 310036, People's Republic of China
| | - Xinrui Yang
- Department of Environmental Science and Engineering, Hangzhou Normal University, Hangzhou, 310036, People's Republic of China
| | - Weiqin Zhu
- Department of Environmental Science and Engineering, Hangzhou Normal University, Hangzhou, 310036, People's Republic of China
| | - Hangjun Zhang
- Department of Environmental Science and Engineering, Hangzhou Normal University, Hangzhou, 310036, People's Republic of China
| | - Ying Ding
- Department of Environmental Science and Engineering, Hangzhou Normal University, Hangzhou, 310036, People's Republic of China.
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5
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Lin X, Qiao B, Chang R, Li Y, Zheng W, He Z, Tian Y. Characterization of two keystone taxa, sulfur-oxidizing, and nitrate-reducing bacteria, by tracking their role transitions in the benzo[a]pyrene degradative microbiome. MICROBIOME 2023; 11:139. [PMID: 37355612 PMCID: PMC10290299 DOI: 10.1186/s40168-023-01583-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Accepted: 05/23/2023] [Indexed: 06/26/2023]
Abstract
BACKGROUND Keystone taxa are drivers of microbiome structure and functioning, which may play critical roles in microbiome-level responses to recalcitrant pollution and are a key to bioremediation. However, the characterization and manipulation of such taxa is a major challenge due to the complexity of microbial communities and rapid turnover in both time and space. Here, microcosms were set up with benzo[a]-pyrene (BaP) and/or nitrate based on C-rich, S-rich, and N-limited mangrove sediments as reductive experimental models to trigger and track the turnover of keystone taxa to address this challenge. RESULTS Based on microbial co-occurrence network analysis, two keystone taxa, Sulfurovum and Sulfurimonas, were found to exhibit significant role transitions in different microcosms, where these two taxa played nonkeystone roles with neutral relationships in in situ mangrove sediments. However, Sulfurimonas transitioned to be keystone taxa in nitrate-replenished microcosms and formed a keystone guild with Thioalkalispira. Sulfurovum stood out in BaP-added microcosms and mutualized in a densely polycyclic aromatic hydrocarbon (PAH)-degrader-centric keystone guild with Novosphingobium and Robiginitalea, where 63.25% of added BaP was removed. Under the occurrence of nitrate and BaP, they simultaneously played roles as keystone taxa in their respective guilds but exhibited significant competition. Comparative genomics and metagenome-assembled genome (MAG) analysis was then performed to reveal the metabolic potential of those keystone taxa and to empirically deduce their functional role in keystone guilds. Sulfurimonas possesses a better sense system and motility, indicative of its aggressive role in nitrate acquisition and conversion; Sulfurovum exhibited a better ability for oxidation resistance and transporting nutrients and electrons. High-efficiency thermal asymmetric interlaced polymerase reaction (hiTAIL-PCR) and enhanced green fluorescent protein (eGFP)-labeling approaches were employed to capture and label the BaP key degrader to further experimentally verify the roles of keystone taxa Sulfurovum in the keystone guilds. Observations of the enhancement in reactive oxygen species (ROS) removal, cell growth, and degradation efficiency by co-culture of isolated keystone taxa strains experimentally demonstrated that Sulfurovum contributes to the BaP degradative microbiome against BaP toxicity. CONCLUSIONS Our findings suggest that the combined use of co-occurrence network analysis, comparative genomics, and co-culture of captured keystone taxa (3C-strategy) in microbial communities whose structure is strongly shaped by changing environmental factors can characterize keystone taxa roles in keystone guilds and may provide targets for manipulation to improve the function of the microbiome. Video Abstract.
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Affiliation(s)
- Xiaolan Lin
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, School of Life Sciences, Xiamen University, Xiamen, 361102, China
| | - Baoyi Qiao
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, School of Life Sciences, Xiamen University, Xiamen, 361102, China
| | - Ruirui Chang
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, School of Life Sciences, Xiamen University, Xiamen, 361102, China
| | - Yixin Li
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, School of Life Sciences, Xiamen University, Xiamen, 361102, China
| | - Wei Zheng
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, School of Life Sciences, Xiamen University, Xiamen, 361102, China
| | - Zhili He
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, 519080, China
| | - Yun Tian
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, School of Life Sciences, Xiamen University, Xiamen, 361102, China.
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, 361102, China.
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6
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Kambara H, Dinh HTT, Matsushita S, Aoi Y, Kindaichi T, Ozaki N, Ohashi A. New microbial electrosynthesis system for methane production from carbon dioxide coupled with oxidation of sulfide to sulfate. J Environ Sci (China) 2023; 125:786-797. [PMID: 36375960 DOI: 10.1016/j.jes.2022.02.029] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Revised: 02/16/2022] [Accepted: 02/18/2022] [Indexed: 06/16/2023]
Abstract
Microbial electrosynthesis system (MES) is a promising method that can use carbon dioxide, which is a greenhouse gas, to produce methane which acts as an energy source, without using organic substances. However, this bioelectrical reduction reaction can proceed at a certain high applied voltage when coupled with water oxidation in the anode coated with metallic catalyst. When coupled with the oxidation of HS- to SO42-, methane production is thermodynamically more feasible, thus implying its production at a considerably lower applied voltage. In this study, we demonstrated the possibility of electrotrophic methane production coupled with HS- oxidation in a cost-effective bioanode chamber in the MES without organic substrates at a low applied voltage of 0.2 V. In addition, microbial community analyses of biomass enriched in the bioanode and biocathode were used to reveal the most probable pathway for methane production from HS- oxidation. In the bioanode, electroautotrophic SO42- production accompanied with electron donation to the electrode is performed mainly by the following two steps: first, incomplete sulfide oxidation to sulfur cycle intermediates (SCI) is performed; then the produced SCI are disproportionated to HS- and SO42-. In the biocathode, methane is produced mainly via H2 and acetate by electron-accepting syntrophic bacteria, homoacetogens, and acetoclastic archaea. Here, a new eco-friendly MES with biological H2S removal is established.
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Affiliation(s)
- Hiromi Kambara
- Department of Civil and Environmental Engineering, Graduate School of Engineering, Hiroshima University, 1-4-1, Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8527, Japan
| | - Ha T T Dinh
- Faculty of Environment, Ho Chi Minh City University of Natural Resources and Environment, 236 Le Van Sy, 1 Ward, Tan Binh District, Ho Chi Minh City, Vietnam
| | - Shuji Matsushita
- Agricultural Technology Research Center, Hiroshima Prefectural Technology Research Institute, 6869, Hara, Hachihonmatsu, Higashihiroshima, Hiroshima 739-0151, Japan
| | - Yoshiteru Aoi
- Program of Biotechnology, Graduate School of Integrated Sciences for Life, Hiroshima University, 1-3-1, Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8530, Japan
| | - Tomonori Kindaichi
- Department of Civil and Environmental Engineering, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1, Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8527, Japan
| | - Noriatsu Ozaki
- Department of Civil and Environmental Engineering, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1, Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8527, Japan
| | - Akiyoshi Ohashi
- Department of Civil and Environmental Engineering, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1, Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8527, Japan.
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7
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Linssen R, Slinkert T, Buisman CJN, Klok JBM, Ter Heijne A. Anaerobic sulphide removal by haloalkaline sulphide oxidising bacteria. BIORESOURCE TECHNOLOGY 2023; 369:128435. [PMID: 36481375 DOI: 10.1016/j.biortech.2022.128435] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 11/23/2022] [Accepted: 11/30/2022] [Indexed: 06/17/2023]
Abstract
Sulphide is a toxic and corrosive compound and requires removal from waste streams. Recent discoveries show that sulphide oxidising bacteria (SOB) from modern desulphurisation plants are able to spatially separate sulphide removal and oxygen reduction when exposed to intermittent anaerobic and aerobic environments. Here, SOB act as electron shuttles between electron donor and acceptor. The underlying mechanisms for electron shuttling are of yet unknown. To investigate the anaerobic sulphide removal of SOB, batch experiments and mathematical models were applied. The sulphide removal capacity decreased at increasing biomass concentrations. At 0.6 mgN/L SOB could remove up to 8 mgS/mgN in 30 min. It was found that biological activity determines sulphide removal, alongside chemical processes. Anaerobic oxidation of electron carriers was determined to only explain 0.1% of charge storage, where irreversible cleavage of long chain polysulphides could explain full sulphide storage. Different sulphide removal and intracellular storage processes are postulated.
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Affiliation(s)
- Rikke Linssen
- Environmental Technology, Wageningen University, P.O. Box 17, Wageningen, The Netherlands
| | - Thomas Slinkert
- Environmental Technology, Wageningen University, P.O. Box 17, Wageningen, The Netherlands
| | - Cees J N Buisman
- Environmental Technology, Wageningen University, P.O. Box 17, Wageningen, The Netherlands; Wetsus, European Centre of Excellence for Sustainable Water Technology, Oostergoweg 9, Leeuwarden, The Netherlands
| | - Johannes B M Klok
- Environmental Technology, Wageningen University, P.O. Box 17, Wageningen, The Netherlands; Wetsus, European Centre of Excellence for Sustainable Water Technology, Oostergoweg 9, Leeuwarden, The Netherlands; Paqell B.V., Reactorweg 301, 3542 AD Utrecht, The Netherlands
| | - Annemiek Ter Heijne
- Environmental Technology, Wageningen University, P.O. Box 17, Wageningen, The Netherlands.
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8
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Yang Y, Xie X, Chen M, Xie Z, Wang J. Effects of Sulfide Input on Arsenate Bioreduction and Its Reduction Product Formation in Sulfidic Groundwater. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:16987. [PMID: 36554867 PMCID: PMC9779320 DOI: 10.3390/ijerph192416987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 12/15/2022] [Accepted: 12/16/2022] [Indexed: 06/17/2023]
Abstract
Microbes have important impacts on the mobilization of arsenic in groundwater. To study the effects of sulfide on As(V) bioreduction in sulfidic groundwater, Citrobacter sp. JH012-1 isolated from sediments in the Jianghan Plain was used in a microcosm experiment. The results showed that sulfide significantly enhanced As(V) bioreduction as an additional electron donor. The reduction rates of As(V) were 21.8%, 34.5%, 73.6% and 85.9% under 0, 15, 75 and 150 µM sulfide inputting, respectively. The main products of As(V) bioreduction were thioarsenite and orpiment and the concentration of thioarsenite reached to 5.5 and 7.1 µM in the solution with the initial 75 and 150 µM sulfide, respectively. However, under 0 and 15 µM sulfide inputting, the dominant product was arsenite with no thioarsenite accumulation. The decrease in pH enhanced the bioreduction of As(V) and promoted the formation of thioarsenite and orpiment. In addition, the percentage of thioarsenite in total arsenic decreased with the decrease in the ratio of sulfur to arsenic, indicating that the formation of thioarsenite was limited by the concentration of initial sulfide. Therefore, the presence of sulfide had a significant effect on the transformation of arsenic in groundwater. This study provides new insights into the bioreduction of As(V) and the formation of thioarsenite in sulfidic groundwater.
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Affiliation(s)
- Yang Yang
- Hubei Key Laboratory of Yangtze Catchment Environmental Aquatic Science, School of Environmental Studies, China University of Geosciences, Wuhan 430074, China
| | - Xi Xie
- School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, China
| | - Mengna Chen
- Hubei Key Laboratory of Yangtze Catchment Environmental Aquatic Science, School of Environmental Studies, China University of Geosciences, Wuhan 430074, China
| | - Zuoming Xie
- Hubei Key Laboratory of Yangtze Catchment Environmental Aquatic Science, School of Environmental Studies, China University of Geosciences, Wuhan 430074, China
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan 430074, China
| | - Jia Wang
- Changjiang River Scientific Research Institute, Wuhan 430014, China
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9
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Bioelectrocatalytic sulfide oxidation by a haloalkaliphilic electroactive microbial community dominated by Desulfobulbaceae. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.140576] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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10
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Peh S, Mu T, Zhong W, Yang M, Chen Z, Yang G, Zhao X, Sharshar MM, Samak NA, Xing J. Enhanced Biodesulfurization with a Microbubble Strategy in an Airlift Bioreactor with Haloalkaliphilic Bacterium Thioalkalivibrio versutus D306. ACS OMEGA 2022; 7:15518-15528. [PMID: 35571827 PMCID: PMC9096976 DOI: 10.1021/acsomega.2c00258] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Accepted: 03/31/2022] [Indexed: 05/05/2023]
Abstract
Biodesulfurization under haloalkaline conditions requires limiting oxygen and additional energy in the system to deliver high mixing quality control. This study considers biodesulfurization in an airlift bioreactor with uniform microbubbles generated by a fluidic oscillation aeration system to enhance the biological desulfurization process and its hydrodynamics. Fluidic oscillation aeration in an airlift bioreactor requires minimal energy input for microbubble generation. This aeration system produced 81.87% smaller average microbubble size than the direct aeration system in a bubble column bioreactor. The biodesulfurization phase achieved a yield of 94.94% biological sulfur, 84.91% biological sulfur selectivity, and 5.06% sulfur oxidation performance in the airlift bioreactor with the microbubble strategy. The biodesulfurization conditions of thiosulfate via Thioalkalivibrio versutus D306 are revealed in this study. The biodesulfurization conditions in the airlift bioreactor with the fluidic oscillation aeration system resulted in the complete conversion of thiosulfate with 27.64% less sulfate production and 10.34% more biological sulfur production than in the bubble column bioreactor. Therefore, pleasant hydrodynamics via an airlift bioreactor mechanism with microbubbles is favored for biodesulfurization under haloalkaline conditions.
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Affiliation(s)
- Sumit Peh
- CAS
Key Laboratory of Green Process and Engineering, State Key Laboratory
of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences (CAS), Beijing 100190, China
- College
of Chemical Engineering, University of Chinese
Academy of Sciences, Beijing 100049, P.R. China
| | - Tingzhen Mu
- CAS
Key Laboratory of Green Process and Engineering, State Key Laboratory
of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences (CAS), Beijing 100190, China
| | - Wei Zhong
- CAS
Key Laboratory of Green Process and Engineering, State Key Laboratory
of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences (CAS), Beijing 100190, China
- College
of Chemical Engineering, University of Chinese
Academy of Sciences, Beijing 100049, P.R. China
| | - Maohua Yang
- CAS
Key Laboratory of Green Process and Engineering, State Key Laboratory
of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences (CAS), Beijing 100190, China
| | - Zheng Chen
- CAS
Key Laboratory of Green Process and Engineering, State Key Laboratory
of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences (CAS), Beijing 100190, China
- College
of Chemical Engineering, University of Chinese
Academy of Sciences, Beijing 100049, P.R. China
| | - Gama Yang
- CAS
Key Laboratory of Green Process and Engineering, State Key Laboratory
of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences (CAS), Beijing 100190, China
- College
of Chemical Engineering, University of Chinese
Academy of Sciences, Beijing 100049, P.R. China
| | - Xuhao Zhao
- CAS
Key Laboratory of Green Process and Engineering, State Key Laboratory
of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences (CAS), Beijing 100190, China
- College
of Chemical Engineering, University of Chinese
Academy of Sciences, Beijing 100049, P.R. China
| | - Moustafa Mohamed Sharshar
- CAS
Key Laboratory of Green Process and Engineering, State Key Laboratory
of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences (CAS), Beijing 100190, China
- College
of Chemical Engineering, University of Chinese
Academy of Sciences, Beijing 100049, P.R. China
| | - Nadia A. Samak
- CAS
Key Laboratory of Green Process and Engineering, State Key Laboratory
of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences (CAS), Beijing 100190, China
- College
of Chemical Engineering, University of Chinese
Academy of Sciences, Beijing 100049, P.R. China
- Processes
Design and Development Department, Egyptian
Petroleum Research Institute, Nasr
City 11727, Cairo, Egypt
| | - Jianmin Xing
- CAS
Key Laboratory of Green Process and Engineering, State Key Laboratory
of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences (CAS), Beijing 100190, China
- College
of Chemical Engineering, University of Chinese
Academy of Sciences, Beijing 100049, P.R. China
- Chemistry
and Chemical Engineering Guangdong Laboratory, Shantou 515031, P.R. China
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11
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Investigating role of abiotic side and finding optimum abiotic condition for improving gas biodesulfurization using Thioalkalivibrio versutus. Sci Rep 2022; 12:6260. [PMID: 35428823 PMCID: PMC9012822 DOI: 10.1038/s41598-022-10430-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Accepted: 03/29/2022] [Indexed: 11/24/2022] Open
Abstract
Hydrogen sulfide (H2S) is a super toxic substance that produces SOx gases when combusted. Therefore, it should be removed from gas streams. Biodesulfurization is one of the developing methods for removing sulfide. Gas biodesulfurization must be accelerated to be competitive with chemical processes. This process has two sides: biotic and abiotic sides. To increase the rate of sulfide removal, this substance should be given to the bacteria in the maximum amount (Max. − RHS B). Therefore, it is necessary to minimize the rate of adverse abiotic reactions of sulfide (Min. − RHS A). Minimizing the sulfide reaction with biosulfur and oxygen and thiosulfate generation (Min. − RHS thio2) was assessed in de-microbized medium. It was concluded that the pH should be kept as low as possible. The kinetics of thiosulfate formation from sulfide oxidation (− RHS thio1) are strongly dependent on the sulfide concentration, and to minimize this reaction rate, sulfide should be gently injected into the culture. To minimize sulfide reduction to hydrogen sulfide (Min. − RHS rev), the pH should be kept as high as possible. Using the Design Expert v.13, a model was driven for the abiotic side to obtain optimum condition. The pH value was found to be 8.2 and the sulfide concentration to 2.5E−05 M. Thioalkalivibrio versutus cultivation under identified abiotic conditions resulted in biological removal of sulfide up to 1.5 g/h. The culture was not able to remove 2 g/h input sulfide, and to increase this, the biotic side should be studied.
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12
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Ostermeyer P, Bonin L, Leon‐Fernandez LF, Dominguez‐Benetton X, Hennebel T, Rabaey K. Electrified bioreactors: the next power-up for biometallurgical wastewater treatment. Microb Biotechnol 2022; 15:755-772. [PMID: 34927376 PMCID: PMC8913880 DOI: 10.1111/1751-7915.13992] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 11/26/2021] [Accepted: 11/29/2021] [Indexed: 12/23/2022] Open
Abstract
Over the past decades, biological treatment of metallurgical wastewaters has become commonplace. Passive systems require intensive land use due to their slow treatment rates, do not recover embedded resources and are poorly controllable. Active systems however require the addition of chemicals, increasing operational costs and possibly negatively affecting safety and the environment. Electrification of biological systems can reduce the use of chemicals, operational costs, surface footprint and environmental impact when compared to passive and active technologies whilst increasing the recovery of resources and the extraction of products. Electrification of low rate applications has resulted in the development of bioelectrochemical systems (BES), but electrification of high rate systems has been lagging behind due to the limited mass transfer, electron transfer and biomass density in BES. We postulate that for high rate applications, the electrification of bioreactors, for example, through the use of electrolyzers, may herald a new generation of electrified biological systems (EBS). In this review, we evaluate the latest trends in the field of biometallurgical and microbial-electrochemical wastewater treatment and discuss the advantages and challenges of these existing treatment technologies. We advocate for future research to focus on the development of electrified bioreactors, exploring the boundaries and limitations of these systems, and their validity upon treating industrial wastewaters.
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Affiliation(s)
- Pieter Ostermeyer
- Faculty of Bioscience EngineeringCenter of Microbial Ecology and Technology (CMET)Ghent UniversityCoupure Links 653GhentB‐9000Belgium
- CAPTUREFrieda Saeysstraat 1Ghent9000Belgium
| | - Luiza Bonin
- Faculty of Bioscience EngineeringCenter of Microbial Ecology and Technology (CMET)Ghent UniversityCoupure Links 653GhentB‐9000Belgium
- CAPTUREFrieda Saeysstraat 1Ghent9000Belgium
| | - Luis Fernando Leon‐Fernandez
- Separation and Conversion TechnologyFlemish Institute for Technological Research (VITO)Boeretang 200Mol2400Belgium
| | - Xochitl Dominguez‐Benetton
- Separation and Conversion TechnologyFlemish Institute for Technological Research (VITO)Boeretang 200Mol2400Belgium
| | - Tom Hennebel
- Faculty of Bioscience EngineeringCenter of Microbial Ecology and Technology (CMET)Ghent UniversityCoupure Links 653GhentB‐9000Belgium
- Group Research and Development, Competence Area Recycling and Extraction TechnologiesUmicoreWatertorenstraat 33OlenB‐2250Belgium
| | - Korneel Rabaey
- Faculty of Bioscience EngineeringCenter of Microbial Ecology and Technology (CMET)Ghent UniversityCoupure Links 653GhentB‐9000Belgium
- CAPTUREFrieda Saeysstraat 1Ghent9000Belgium
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13
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de Rink R, B Lavender M, Liu D, Klok JBM, Sorokin DY, Ter Heijne A, Buisman CJN. Continuous electron shuttling by sulfide oxidizing bacteria as a novel strategy to produce electric current. JOURNAL OF HAZARDOUS MATERIALS 2022; 424:127358. [PMID: 34879559 DOI: 10.1016/j.jhazmat.2021.127358] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Revised: 08/30/2021] [Accepted: 09/24/2021] [Indexed: 06/13/2023]
Abstract
Sulfide oxidizing bacteria (SOB) are widely applied in industry to convert toxic H2S into elemental sulfur. Haloalkaliphilic planktonic SOB can remove sulfide from solution under anaerobic conditions (SOB are 'charged'), and release electrons at an electrode (discharge of SOB). The effect of this electron shuttling on product formation and biomass growth is not known. Here, we study and demonstrate a continuous process in which SOB remove sulfide from solution in an anaerobic 'uptake chamber', and shuttle these electrons to the anode of an electrochemical cell, in the absence of dissolved sulfide. Two experiments over 31 and 41 days were performed. At a sulfide loading rate of 1.1 mmolS/day, electricity was produced continuously (3 A/m2) without dissolved sulfide in the anolyte. The main end product was sulfate (56% in experiment 1% and 78% in experiment 2), and 87% and 77% of the electrons in sulfide were recovered as electricity. It was found that the current density was dependent on the sulfide loading rate and not on the anode potential. Biological growth occurred, mainly at the anode as biofilm, in which the deltaproteobacterial genus Desulfurivibrio was dominating. Our results demonstrate a novel strategy to produce electricity from sulfide in an electrochemical system.
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Affiliation(s)
- Rieks de Rink
- Environmental Technology, Wageningen University, P.O. Box 17, Wageningen, The Netherlands; Paqell B.V., Reactorweg 301, 3542 AD Utrecht, The Netherlands
| | - Micaela B Lavender
- Environmental Technology, Wageningen University, P.O. Box 17, Wageningen, The Netherlands
| | - Dandan Liu
- Paqell B.V., Reactorweg 301, 3542 AD Utrecht, The Netherlands
| | - Johannes B M Klok
- Environmental Technology, Wageningen University, P.O. Box 17, Wageningen, The Netherlands; Paqell B.V., Reactorweg 301, 3542 AD Utrecht, The Netherlands; Wetsus, European Centre of Excellence for Sustainable Water Technology, Oostergoweg 9, Leeuwarden, The Netherlands
| | - Dimitry Y Sorokin
- Winogradsky Institute of Microbiology, Research Centre of Biotechnology RAS, Leninskii Prospect, 33/2, 119071 Moscow, Russia; Department of Biotechnology, Delft University of Technology, Van der Maasweg 9, 2629HZ Delft, The Netherlands
| | - Annemiek Ter Heijne
- Environmental Technology, Wageningen University, P.O. Box 17, Wageningen, The Netherlands.
| | - Cees J N Buisman
- Environmental Technology, Wageningen University, P.O. Box 17, Wageningen, The Netherlands; Wetsus, European Centre of Excellence for Sustainable Water Technology, Oostergoweg 9, Leeuwarden, The Netherlands
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14
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Srivastava P, Abbassi R, Yadav AK, Garaniya V, Lewis T, Zhao Y, Aminabhavi T. Interrelation between sulphur and conductive materials and its impact on ammonium and organic pollutants removal in electroactive wetlands. JOURNAL OF HAZARDOUS MATERIALS 2021; 419:126417. [PMID: 34174621 DOI: 10.1016/j.jhazmat.2021.126417] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 05/21/2021] [Accepted: 06/14/2021] [Indexed: 06/13/2023]
Abstract
This investigation is the first of its kind to evaluate the interrelation of sulphate (SO42-) with conductive materials as well as their individual and synergetic effects on the removal of ammonium and organic pollutants in electroactive wetlands, also known as constructed wetland (CW) - microbial fuel cell (MFC). The role of MFC components in CW was investigated to treat the sulphate containing wastewater under a long-term operation without any toxicity build-up in the system. A comparative study was also performed between CW-MFC and CW, where sulphate containing wastewater (S-replete) and without sulphate wastewater (S-deplete) was assessed. The S-replete showed high NH4+ removal than the S-deplete, and the requesnce of removal was: CW-MFC-replete>CW-MFC-deplete>CW-replete>CW-deplete. The chemical oxygen demand (COD) removal was high in the case of CW-MFC-replete, and the sequence of removal was CW-MFC-replete>CW-MFC-deplete>CW-deplete>CW-replete. X-ray photon spectroscopic study indicates 0.84% sulphur accumulation in CW-MFC-replete and 2.49% in CW-replete, indicating high sulphur precipitation in CW without the MFC component. The high relative abundance of class Deltaproteobacteria (7.3%) in CW-MFC-replete along with increased microbial diversity (Shannon index=3.5) rationalise the symbiosis of sulphate reducing/oxidising microbes and its impact on the treatment performance and electrochemical activity.
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Affiliation(s)
- Pratiksha Srivastava
- Australian Maritime College, College of Sciences and Engineering, University of Tasmania, Launceston 7248, Australia
| | - Rouzbeh Abbassi
- School of Engineering, Faculty of Science and Engineering, Macquarie University, Sydney, NSW 2109, Australia
| | - Asheesh Kumar Yadav
- Environment and Sustainability Department, CSIR-Institute of Minerals and Materials Technology, Bhubaneswar 751013, India
| | - Vikram Garaniya
- Australian Maritime College, College of Sciences and Engineering, University of Tasmania, Launceston 7248, Australia
| | - Trevor Lewis
- School of Natural Sciences, College of Sciences and Engineering, University of Tasmania, Launceston, Tasmania 7250, Australia
| | - Yaqian Zhao
- State Key Laboratory of Eco-Hydraulics in Northwest Arid Region, Xi'an University of Technology, Xi'an 710048, Shaanxi, PR China
| | - Tejraj Aminabhavi
- Department of Chemistry, Karnatak University, Dharwad 580003, India.
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15
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Chen Z, Yang G, Hao X, Samak NA, Jia Y, Peh S, Mu T, Yang M, Xing J. Recent advances in microbial capture of hydrogen sulfide from sour gas via sulfur-oxidizing bacteria. Eng Life Sci 2021; 21:693-708. [PMID: 34690639 PMCID: PMC8518563 DOI: 10.1002/elsc.202100006] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 03/23/2021] [Accepted: 04/30/2021] [Indexed: 01/05/2023] Open
Abstract
Biological desulfurization offers several remarkably environmental advantages of operation at ambient temperature and atmospheric pressure, no demand of toxic chemicals as well as the formation of biologically re-usable sulfur (S0), which has attracted increasing attention compared to conventionally physicochemical approaches in removing hydrogen sulfide from sour gas. However, the low biomass of SOB, the acidification of process solution, the recovery of SOB, and the selectivity of bio-S0 limit its industrial application. Therefore, more efforts should be made in the improvement of the BDS process for its industrial application via different research perspectives. This review summarized the recent research advances in the microbial capture of hydrogen sulfide from sour gas based on strain modification, absorption enhancement, and bioreactor modification. Several efficient solutions to limitations for the BDS process were proposed, which paved the way for the future development of BDS industrialization.
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Affiliation(s)
- Zheng Chen
- CAS Key Laboratory of Green Process and EngineeringState Key Laboratory of Biochemical EngineeringInstitute of Process Engineering, Chinese Academy of SciencesBeijingP. R. China
- College of Chemical EngineeringUniversity of Chinese Academy of SciencesBeijingP. R. China
| | - Gama Yang
- CAS Key Laboratory of Green Process and EngineeringState Key Laboratory of Biochemical EngineeringInstitute of Process Engineering, Chinese Academy of SciencesBeijingP. R. China
- College of Chemical EngineeringUniversity of Chinese Academy of SciencesBeijingP. R. China
| | - Xuemi Hao
- CAS Key Laboratory of Green Process and EngineeringState Key Laboratory of Biochemical EngineeringInstitute of Process Engineering, Chinese Academy of SciencesBeijingP. R. China
- College of Chemical EngineeringUniversity of Chinese Academy of SciencesBeijingP. R. China
| | - Nadia A. Samak
- CAS Key Laboratory of Green Process and EngineeringState Key Laboratory of Biochemical EngineeringInstitute of Process Engineering, Chinese Academy of SciencesBeijingP. R. China
- College of Chemical EngineeringUniversity of Chinese Academy of SciencesBeijingP. R. China
- Processes Design and Development DepartmentEgyptian Petroleum Research InstituteCairoEgypt
| | - Yunpu Jia
- CAS Key Laboratory of Green Process and EngineeringState Key Laboratory of Biochemical EngineeringInstitute of Process Engineering, Chinese Academy of SciencesBeijingP. R. China
- College of Chemical EngineeringUniversity of Chinese Academy of SciencesBeijingP. R. China
| | - Sumit Peh
- CAS Key Laboratory of Green Process and EngineeringState Key Laboratory of Biochemical EngineeringInstitute of Process Engineering, Chinese Academy of SciencesBeijingP. R. China
- College of Chemical EngineeringUniversity of Chinese Academy of SciencesBeijingP. R. China
| | - Tingzhen Mu
- CAS Key Laboratory of Green Process and EngineeringState Key Laboratory of Biochemical EngineeringInstitute of Process Engineering, Chinese Academy of SciencesBeijingP. R. China
| | - Maohua Yang
- CAS Key Laboratory of Green Process and EngineeringState Key Laboratory of Biochemical EngineeringInstitute of Process Engineering, Chinese Academy of SciencesBeijingP. R. China
| | - Jianmin Xing
- CAS Key Laboratory of Green Process and EngineeringState Key Laboratory of Biochemical EngineeringInstitute of Process Engineering, Chinese Academy of SciencesBeijingP. R. China
- College of Chemical EngineeringUniversity of Chinese Academy of SciencesBeijingP. R. China
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16
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Dykstra CM, Pavlostathis SG. Hydrogen sulfide affects the performance of a methanogenic bioelectrochemical system used for biogas upgrading. WATER RESEARCH 2021; 200:117268. [PMID: 34098269 DOI: 10.1016/j.watres.2021.117268] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 05/11/2021] [Accepted: 05/14/2021] [Indexed: 06/12/2023]
Abstract
Methanogenic bioelectrochemical systems (BESs) can convert carbon dioxide (CO2) to methane (CH4) and may be used for anaerobic digester biogas upgrading. However, the effect of hydrogen sulfide (H2S), a common biogas component, on BES performance is unknown. Thus, the objective of this study was to assess the effect of H2S addition to the cathode headspace on BES performance at a range of initial gas-phase H2S concentrations (0-6% v/v), as well as its effect on the anode and cathode microbial communities. As the initial cathode headspace H2S increased from 0 to 2% (v/v), biocathodic CH4 production increased by two-fold to 3.56 ± 0.36 mmol/L-d, due to dissolved H2S transport from the cathode to the anode where H2S was oxidized. Elemental sulfur and sulfate were H2S oxidation products detected in the anode. Above 3% initial cathode headspace H2S, biocathodic CH4 production declined due to inhibition. A phylotype most closely related to Methanobrevibacter arboriphilus dominated the cathode archaeal communities. In the sulfide-amended BES, a phylotype similar to the exoelectrogen Ochrobactrum anthropi was enriched in both the anode and cathode, whereas phylotypes related to sulfate-reducing and sulfur oxidizing Bacteria were detected in the bioanode. Thus, sulfide transport and oxidation in the anode play an important role in methanogenic BESs treating sulfide-bearing biogas.
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Affiliation(s)
- Christy M Dykstra
- School of Civil and Environmental Engineering, Georgia Institute of Technology, 311 Ferst Drive, Atlanta, GA 30332-0512, United States; Department of Civil, Construction and Environmental Engineering, San Diego State University, 5500 Campanile Drive, San Diego, CA 92182, United States.
| | - Spyros G Pavlostathis
- School of Civil and Environmental Engineering, Georgia Institute of Technology, 311 Ferst Drive, Atlanta, GA 30332-0512, United States
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17
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Song B, Tian Z, van der Weijden RD, Buisman CJN, Weijma J. High-rate biological selenate reduction in a sequencing batch reactor for recovery of hexagonal selenium. WATER RESEARCH 2021; 193:116855. [PMID: 33556693 DOI: 10.1016/j.watres.2021.116855] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 12/30/2020] [Accepted: 01/16/2021] [Indexed: 06/12/2023]
Abstract
Recovery of selenium (Se) from wastewater provides a solution for both securing Se supply and preventing Se pollution. Here, we developed a high-rate process for biological selenate reduction to elemental selenium. Distinctive from other studies, we aimed for a process with selenate as the main biological electron sink, with minimal formation of methane or sulfide. A sequencing batch reactor, fed with an influent containing 120 mgSe L-1 selenate and ethanol as electron donor and carbon source, was operated for 495 days. The high rates (419 ± 17 mgSe L-1 day-1) were recorded between day 446 and day 495 for a hydraulic retention time of 6 h. The maximum conversion efficiency of selenate amounted to 96% with a volumetric conversion rate of 444 mgSe L-1 day-1, which is 6 times higher than the rates reported in the literature thus far. At the end of the experiment, a highly enriched selenate reducing biomass had developed, with a specific activity of 856 ± 26 mgSe-1day-1gbiomass-1, which was nearly 1000-fold higher than that of the inoculum. No evidence was found for the formation of methane, sulfide, or volatile reduced selenium compounds like dimethyl-selenide or H2Se, revealing a high selectivity. Ethanol was incompletely oxidized to acetate. The produced elemental selenium partially accumulated in the reactor as pure (≥80% Se of the total mixture of biomass sludge flocs and flaky aggregates, and ~100% of the specific flaky aggregates) selenium black hexagonal needles, with cluster sizes between 20 and 200 µm. The new process may serve as the basis for a high-rate technology to remove and recover pure selenium from wastewater or process streams with high selectivity.
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Affiliation(s)
- B Song
- Department of Environmental Technology, Wageningen University and Research, P.O. Box 17; 6700 AA Wageningen, the Netherlands
| | - Z Tian
- Department of Environmental Technology, Wageningen University and Research, P.O. Box 17; 6700 AA Wageningen, the Netherlands
| | - R D van der Weijden
- Department of Environmental Technology, Wageningen University and Research, P.O. Box 17; 6700 AA Wageningen, the Netherlands
| | - C J N Buisman
- Department of Environmental Technology, Wageningen University and Research, P.O. Box 17; 6700 AA Wageningen, the Netherlands
| | - J Weijma
- Department of Environmental Technology, Wageningen University and Research, P.O. Box 17; 6700 AA Wageningen, the Netherlands.
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18
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Effects of the Feeding Solution Composition on a Reductive/Oxidative Sequential Bioelectrochemical Process for Perchloroethylene Removal. Processes (Basel) 2021. [DOI: 10.3390/pr9030405] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Chlorinated aliphatic hydrocarbons (CAHs) are common groundwater contaminants due to their improper use in several industrial activities. Specialized microorganisms are able to perform the reductive dechlorination (RD) of high-chlorinated CAHs such as perchloroethylene (PCE), while the low-chlorinated ethenes such as vinyl chloride (VC) are more susceptible to oxidative mechanisms performed by aerobic dechlorinating microorganisms. Bioelectrochemical systems can be used as an effective strategy for the stimulation of both anaerobic and aerobic microbial dechlorination, i.e., a biocathode can be used as an electron donor to perform the RD, while a bioanode can provide the oxygen necessary for the aerobic dechlorination reaction. In this study, a sequential bioelectrochemical process constituted by two membrane-less microbial electrolysis cells connected in series has been, for the first time, operated with synthetic groundwater, also containing sulphate and nitrate, to simulate more realistic process conditions due to the possible establishment of competitive processes for the reducing power, with respect to previous research made with a PCE-contaminated mineral medium (with neither sulphate nor nitrate). The shift from mineral medium to synthetic groundwater showed the establishment of sulphate and nitrate reduction and caused the temporary decrease of the PCE removal efficiency from 100% to 85%. The analysis of the RD biomarkers (i.e., Dehalococcoides mccartyi 16S rRNA and tceA, bvcA, vcrA genes) confirmed the decrement of reductive dechlorination performances after the introduction of the synthetic groundwater, also characterized by a lower ionic strength and nutrients content. On the other hand, the system self-adapted the flowing current to the increased demand for the sulphate and nitrate reduction, so that reducing power was not in defect for the RD, although RD coulombic efficiency was less.
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19
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Kiragosyan K, Picard M, Timmers PHA, Sorokin DY, Klok JBM, Roman P, Janssen AJH. Effect of methanethiol on process performance, selectivity and diversity of sulfur-oxidizing bacteria in a dual bioreactor gas biodesulfurization system. JOURNAL OF HAZARDOUS MATERIALS 2020; 398:123002. [PMID: 32506049 DOI: 10.1016/j.jhazmat.2020.123002] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2020] [Revised: 04/30/2020] [Accepted: 05/19/2020] [Indexed: 06/11/2023]
Abstract
This study provides important new insights on how to achieve high sulfur selectivities and stable gas biodesulfurization process operation in the presence of both methanethiol and H2S in the feed gas. On the basis of previous research, we hypothesized that a dual bioreactor lineup (with an added anaerobic bioreactor) would favor sulfur-oxidizing bacteria (SOB) that yield a higher sulfur selectivity. Therefore, the focus of the present study was to enrich thiol-resistant SOB that can withstand methanethiol, the most prevalent and toxic thiol in sulfur-containing industrial off gases. In addition, the effect of process conditions on the SOB population dynamics was investigated. The results confirmed that thiol-resistant SOB became dominant with a concomitant increase of the sulfur selectivity from 75 mol% to 90 mol% at a loading rate of 2 mM S methanethiol day-1. The abundant SOB in the inoculum - Thioalkalivibrio sulfidiphilus - was first outcompeted by Alkalilimnicola ehrlichii after which Thioalkalibacter halophilus eventually became the most abundant species. Furthermore, we found that the actual electron donor in our lab-scale biodesulfurization system was polysulfide, and not the primarily supplied sulfide.
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Affiliation(s)
- Karine Kiragosyan
- Wetsus, European Centre of Excellence for Sustainable Water Technology, Oostergoweg 9, 8911 MA Leeuwarden, the Netherlands; Environmental Technology, Wageningen University & Research, P.O. Box 17, 6700 AA Wageningen, the Netherlands.
| | - Magali Picard
- Wetsus, European Centre of Excellence for Sustainable Water Technology, Oostergoweg 9, 8911 MA Leeuwarden, the Netherlands; Eurofins Agroscience Services Chem SAS 75, chemin de Sommières 30310, Vergèze, France
| | - Peer H A Timmers
- Wetsus, European Centre of Excellence for Sustainable Water Technology, Oostergoweg 9, 8911 MA Leeuwarden, the Netherlands; Laboratory of Microbiology, Wageningen University & Research, Wageningen, the Netherlands
| | - Dimitry Y Sorokin
- Wetsus, European Centre of Excellence for Sustainable Water Technology, Oostergoweg 9, 8911 MA Leeuwarden, the Netherlands; Winogradsky Institute of Microbiology, Research Centre of Biotechnology, Russian Academy of Sciences, Prospect 60-let Oktyabrya 7/2, Moscow, Russian Federation; Department of Biotechnology, Delft University of Technology, Van der Maasweg 9, 2629 HZ, Delft, the Netherlands
| | - Johannes B M Klok
- Wetsus, European Centre of Excellence for Sustainable Water Technology, Oostergoweg 9, 8911 MA Leeuwarden, the Netherlands; Environmental Technology, Wageningen University & Research, P.O. Box 17, 6700 AA Wageningen, the Netherlands; Paqell B.V., Reactorweg 301, 3542 AD, Utrecht, the Netherlands
| | - Pawel Roman
- Wetsus, European Centre of Excellence for Sustainable Water Technology, Oostergoweg 9, 8911 MA Leeuwarden, the Netherlands
| | - Albert J H Janssen
- Environmental Technology, Wageningen University & Research, P.O. Box 17, 6700 AA Wageningen, the Netherlands; Shell, Oostduinlaan 2, 2596 JM, the Hague, the Netherlands
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20
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Lin S, Hao T, Li X, Xiao Y, Chen G. Pin-point denitrification for groundwater purification without direct chemical dosing: Demonstration of a two-chamber sulfide-driven denitrifying microbial electrochemical system. WATER RESEARCH 2020; 182:115918. [PMID: 32531495 DOI: 10.1016/j.watres.2020.115918] [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: 12/09/2019] [Revised: 05/02/2020] [Accepted: 05/04/2020] [Indexed: 06/11/2023]
Abstract
The nitrate concentration in groundwater has been increasing over time due to the intensive use of nitrogen fertilizer. Current nitrate removal technologies are restricted by the high operational cost or the inevitable secondary contaminations. This study proposed a two-chamber sulfide-driven denitrifying microbial electrochemical system to denitrify nitrate in its cathode chamber. Instead of conventional organic substrates, sulfide is oxidized in the anode chamber to generate electrons for cathodic denitrification. Long-term performance of this novel system was evaluated over 200 days (100 cycles) of batch-fed operation. With the assistance of anodic microorganisms, sulfide can be directly oxidized to sulfate thus avoiding passivating the anode. Catalyzed by the cathodic microorganisms, complete denitrification was realized with neither nitrite nor nitrous oxide accumulation. Benefiting from the electroautotrophic behavior of the functional microorganisms, high electron utilization efficiencies were achieved, 80% and 85% for the anode (sulfide oxidation) and the cathode (denitrification) respectively. Both observed electrode potentials and microbial analyses revealed that cytochrome c is the crucial electron transfer mediator in the cathodic electron transfer for denitrification. Based on the analysis of planktonic and biofilm microbial samples, anodic and cathodic extracellular electron transfer bioprocesses are proposed, both the direct and mediated electron transfers involved, as were revealed by immobilized and planktonic functional microorganisms, respectively. This study demonstrates the feasibility of purifying nitrate-contaminated groundwater without sacrificing its water quality in a separate mode of treatment. This concept can be extended to a broader field, in which the water requires bio-polishing without introducing unwanted secondary pollution like the post-denitrification of wastewater effluents.
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Affiliation(s)
- Sen Lin
- Department of Civil and Environmental Engineering, The Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Tianwei Hao
- Department of Civil and Environmental Engineering, Faculty of Science and Technology, University of Macau, Macau.
| | - Xiling Li
- Department of Civil and Environmental Engineering, The Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Yihang Xiao
- Department of Civil and Environmental Engineering, Faculty of Science and Technology, University of Macau, Macau
| | - Guanghao Chen
- Department of Civil and Environmental Engineering, The Hong Kong University of Science & Technology, Clear Water Bay, Kowloon, Hong Kong, China; 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
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21
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Ter Heijne A, Pereira MA, Pereira J, Sleutels T. Electron Storage in Electroactive Biofilms. Trends Biotechnol 2020; 39:34-42. [PMID: 32646618 DOI: 10.1016/j.tibtech.2020.06.006] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 06/05/2020] [Accepted: 06/09/2020] [Indexed: 10/23/2022]
Abstract
Microbial electrochemical technologies (METs) are promising for sustainable applications. Recently, electron storage during intermittent operation of electroactive biofilms (EABs) has been shown to play an important role in power output and electron efficiencies. Insights into electron storage mechanisms, and the conditions under which these occur, are essential to improve microbial electrochemical conversions and to optimize biotechnological processes. Here, we discuss the two main mechanisms for electron storage in EABs: storage in the form of reduced redox active components in the electron transport chain and in the form of polymers. We review electron storage in EABs and in other microorganisms and will discuss how the mechanisms of electron storage can be influenced.
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Affiliation(s)
- A Ter Heijne
- Environmental Technology, Wageningen University and Research, Wageningen, The Netherlands.
| | - M A Pereira
- CEB - Centre of Biological Engineering, University of Minho, Braga, Portugal
| | - J Pereira
- Environmental Technology, Wageningen University and Research, Wageningen, The Netherlands; Wetsus, European Centre of Excellence for Sustainable Water Technology, Leeuwarden, The Netherlands
| | - T Sleutels
- Wetsus, European Centre of Excellence for Sustainable Water Technology, Leeuwarden, The Netherlands
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22
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Bian B, Bajracharya S, Xu J, Pant D, Saikaly PE. Microbial electrosynthesis from CO 2: Challenges, opportunities and perspectives in the context of circular bioeconomy. BIORESOURCE TECHNOLOGY 2020; 302:122863. [PMID: 32019708 DOI: 10.1016/j.biortech.2020.122863] [Citation(s) in RCA: 95] [Impact Index Per Article: 23.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Revised: 01/17/2020] [Accepted: 01/20/2020] [Indexed: 06/10/2023]
Abstract
Recycling CO2 into organic products through microbial electrosynthesis (MES) is attractive from the perspective of circular bioeconomy. However, several challenges need to be addressed before scaling-up MES systems. In this review, recent advances in electrode materials, microbe-catalyzed CO2 reduction and MES energy consumption are discussed in detail. Anode materials are briefly reviewed first, with several strategies proposed to reduce the energy input for electron generation and enhance MES bioeconomy. This was followed by discussions on MES cathode materials and configurations for enhanced chemolithoautotroph growth and CO2 reduction. Various chemolithoautotrophs, effective for CO2 reduction and diverse bioproduct formation, on MES cathode were also discussed. Finally, research efforts on developing cost-effective process for bioproduct extraction from MES are presented. Future perspectives to improve product formation and reduce energy cost are discussed to realize the application of the MES as a chemical production platform in the context of building a circular economy.
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Affiliation(s)
- Bin Bian
- King Abdullah University of Science and Technology, Water Desalination and Reuse Center, Biological and Environmental Science and Engineering Division, Thuwal 23955 6900, Saudi Arabia
| | - Suman Bajracharya
- King Abdullah University of Science and Technology, Water Desalination and Reuse Center, Biological and Environmental Science and Engineering Division, Thuwal 23955 6900, Saudi Arabia
| | - Jiajie Xu
- King Abdullah University of Science and Technology, Water Desalination and Reuse Center, Biological and Environmental Science and Engineering Division, Thuwal 23955 6900, Saudi Arabia
| | - Deepak Pant
- Flemish Institute for Technological Research (VITO), Separation and Conversion Technology, Boeretang 200, Mol 2400, Belgium; Centre for Advanced Process Technology for Urban Resource Recovery (CAPTURE), 9000 Ghent, Belgium
| | - Pascal E Saikaly
- King Abdullah University of Science and Technology, Water Desalination and Reuse Center, Biological and Environmental Science and Engineering Division, Thuwal 23955 6900, Saudi Arabia.
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23
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de Rink R, Klok JBM, van Heeringen GJ, Keesman KJ, Janssen AJH, Ter Heijne A, Buisman CJN. Biologically enhanced hydrogen sulfide absorption from sour gas under haloalkaline conditions. JOURNAL OF HAZARDOUS MATERIALS 2020; 383:121104. [PMID: 31586887 DOI: 10.1016/j.jhazmat.2019.121104] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Revised: 07/21/2019] [Accepted: 08/26/2019] [Indexed: 06/10/2023]
Abstract
We studied a biotechnological desulfurization process for removal of toxic hydrogen sulfide (H2S) from sour gas. The process consists of two steps: i) Selective absorption of H2S into a (bi)carbonate solution in the absorber column and ii) conversion of sulfide to sulfur by sulfide oxidizing bacteria (SOB) in the aerated bioreactor. In previous studies, several physico-chemical factors were assessed to explain the observed enhancement of H2S absorption in the absorber, but a full explanation was not provided. We investigated the relation between the metabolic activity of SOB and the enhancement factor. Two continuous experiments on pilot-scale were performed to determine H2S absorption efficiencies at different temperatures and biomass concentrations. The absorption efficiency improved at increasing temperatures, i.e. H2S concentration in the treated gas decreased from 715 ± 265 ppmv at 25.4 °C to 69 ± 25 ppmv at 39.4 °C. The opposite trend is expected when H2S absorption is solely determined by physico-chemical factors. Furthermore, increasing biomass concentrations to the absorber also resulted in decreased H2S concentrations in the treated gas, from approximately 6000 ppmv without biomass to 1664 ± 126 ppmv at 44 mg N/L. From our studies it can be concluded that SOB activity enhances H2S absorption and leads to increased H2S removal efficiencies in biotechnological gas desulfurization.
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Affiliation(s)
- Rieks de Rink
- Environmental Technology, Wageningen University, P.O. Box 17, Wageningen, the Netherlands; Paqell B.V., Reactorweg 301, 3542 AD Utrecht, the Netherlands
| | - Johannes B M Klok
- Environmental Technology, Wageningen University, P.O. Box 17, Wageningen, the Netherlands; Paqell B.V., Reactorweg 301, 3542 AD Utrecht, the Netherlands; Wetsus, European Centre of Excellence for Sustainable Water Technology, Oostergoweg 9, Leeuwarden, the Netherlands
| | | | - Karel J Keesman
- Wetsus, European Centre of Excellence for Sustainable Water Technology, Oostergoweg 9, Leeuwarden, the Netherlands; Mathematical and Statistical methods, Wageningen University, P.O. Box 16, 6700 AA Wageningen, the Netherlands
| | - Albert J H Janssen
- Environmental Technology, Wageningen University, P.O. Box 17, Wageningen, the Netherlands
| | - Annemiek Ter Heijne
- Environmental Technology, Wageningen University, P.O. Box 17, Wageningen, the Netherlands.
| | - Cees J N Buisman
- Environmental Technology, Wageningen University, P.O. Box 17, Wageningen, the Netherlands; Wetsus, European Centre of Excellence for Sustainable Water Technology, Oostergoweg 9, Leeuwarden, the Netherlands
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24
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ter Heijne A. Bioelectrochemistry for flexible control of biological processes. ENVIRONMENTAL SCIENCE AND ECOTECHNOLOGY 2020; 1:100011. [PMID: 36160372 PMCID: PMC9488031 DOI: 10.1016/j.ese.2020.100011] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Revised: 01/06/2020] [Accepted: 01/07/2020] [Indexed: 06/12/2023]
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25
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Reductive/Oxidative Sequential Bioelectrochemical Process for Perchloroethylene Removal. WATER 2019. [DOI: 10.3390/w11122579] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
An innovative bioelectrochemical reductive/oxidative sequential process was developed and tested on a laboratory scale to obtain the complete mineralization of perchloroethylene (PCE) in a synthetic medium. The sequential bioelectrochemical process consisted of two separate tubular bioelectrochemical reactors that adopted a novel reactor configuration, avoiding the use of an ion exchange membrane to separate the anodic and cathodic chamber and reducing the cost of the reactor. In the reductive reactor, a dechlorinating mixed inoculum received reducing power to perform the reductive dechlorination of perchloroethylene (PCE) through a cathode chamber, while the less chlorinated daughter products were removed in the oxidative reactor, which supported an aerobic dechlorinating culture through in situ electrochemical oxygen evolution. Preliminary fluid dynamics and electrochemical tests were performed to characterize both the reductive and oxidative reactors, which were electrically independent of each other, with each having its own counterelectrode. The first continuous-flow potentiostatic run with the reductive reactor (polarized at −450 mV vs SHE) resulted in obtaining 100% ± 1% removal efficiency of the influent PCE, while the oxidative reactor (polarized at +1.4 V vs SHE) oxidized the vinyl chloride and ethylene from the reductive reactor, with removal efficiencies of 100% ± 2% and 92% ± 1%, respectively.
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26
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Sudirjo E, Buisman CJN, Strik DPBTB. Marine Sediment Mixed With Activated Carbon Allows Electricity Production and Storage From Internal and External Energy Sources: A New Rechargeable Bio-Battery With Bi-Directional Electron Transfer Properties. Front Microbiol 2019; 10:934. [PMID: 31156566 PMCID: PMC6527962 DOI: 10.3389/fmicb.2019.00934] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Accepted: 04/12/2019] [Indexed: 11/13/2022] Open
Abstract
Marine sediment has a great potential to generate electricity with a bioelectrochemical system (BES) like the microbial fuel cell (MFC). In this study, we investigated the potential of marine sediment and activated carbon (AC) to generate and store electricity. Both internal and external energy supply was validated for storage behavior. Four types of anode electrode compositions were investigated. Two types were mixtures of different volumes of AC and Dutch Eastern Scheldt marine sediment (67% AC and 33% AC) and the others two were 100% AC or 100% marine sediment based. Each composition was duplicated. Operating these BES's under MFC mode with solely marine sediment as the anode electron donor resulted in the creation of a bio-battery. The recharge time of such bio-battery does depend on the fuel content and its usage. The results show that by usage of marine sediment and AC electricity was generated and stored. The 100% AC and the 67% AC mixed with marine sediment electrode were over long term potentiostatic controlled at -100 mV vs. Ag/AgCl which resulted in a cathodic current and an applied voltage. After switching back to the MFC operation mode at 1000 Ω external load, the electrode turned into an anode and electricity was generated. This supports the hypothesis that external supply electrical energy was recovered via bi-directional electron transfer. With open cell voltage experiments these AC marine bioanodes showed internal supplied electric charge storage up to 100 mC at short self-charging times (10 and 60 s) and up to 2.4°C (3,666 C/m3 anode) at long charging time (1 h). Using a hypothetical cell voltage of 0.2 V, this value represents an internal electrical storage density of 0.3 mWh/kg AC marine anode. Furthermore it was remarkable that the BES with 100% marine sediment based electrode also acted like a capacitor similar to the charge storage behaviors of the AC based bioanodes with a maximum volumetric storage of 1,373 C/m3 anode. These insights give opportunities to apply such BES systems as e.g., ex situ bio-battery to store and use electricity for off-grid purpose in remote areas.
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Affiliation(s)
- Emilius Sudirjo
- Government of Landak Regency, West Kalimantan, Indonesia.,Environmental Technology, Wageningen University & Research, Wageningen, Netherlands
| | - Cees J N Buisman
- Environmental Technology, Wageningen University & Research, Wageningen, Netherlands
| | - David P B T B Strik
- Environmental Technology, Wageningen University & Research, Wageningen, Netherlands
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27
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de Rink R, Klok JB, van Heeringen GJ, Sorokin DY, ter Heijne A, Zeijlmaker R, Mos YM, de Wilde V, Keesman KJ, Buisman CJ. Increasing the Selectivity for Sulfur Formation in Biological Gas Desulfurization. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:4519-4527. [PMID: 30882225 PMCID: PMC6581417 DOI: 10.1021/acs.est.8b06749] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
In the biotechnological desulfurization process under haloalkaline conditions, dihydrogen sulfide (H2S) is removed from sour gas and oxidized to elemental sulfur (S8) by sulfide-oxidizing bacteria. Besides S8, the byproducts sulfate (SO42-) and thiosulfate (S2O32-) are formed, which consume caustic and form a waste stream. The aim of this study was to increase selectivity toward S8 by a new process line-up for biological gas desulfurization, applying two bioreactors with different substrate conditions (i.e., sulfidic and microaerophilic), instead of one (i.e., microaerophilic). A 111-day continuous test, mimicking full scale operation, demonstrated that S8 formation was 96.6% on a molar H2S supply basis; selectivity for SO42- and S2O32- were 1.4 and 2.0% respectively. The selectivity for S8 formation in a control experiment with the conventional 1-bioreactor line-up was 75.6 mol %. At start-up, the new process line-up immediately achieved lower SO42- and S2O32- formations compared to the 1-bioreactor line-up. When the microbial community adapted over time, it was observed that SO42- formation further decreased. In addition, chemical formation of S2O32- was reduced due to biologically mediated removal of sulfide from the process solution in the anaerobic bioreactor. The increased selectivity for S8 formation will result in 90% reduction in caustic consumption and waste stream formation compared to the 1-bioreactor line-up.
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Affiliation(s)
- Rieks de Rink
- Environmental
Technology, Wageningen University, P.O. Box 17, 6700 AA Wageningen, The Netherlands
- Paqell
B.V., Reactorweg 301, 3542 AD Utrecht, The Netherlands
| | - Johannes B.M. Klok
- Paqell
B.V., Reactorweg 301, 3542 AD Utrecht, The Netherlands
- Wetsus, European
Centre of Excellence for Sustainable Water
Technology, Oostergoweg
9, 8911 MA Leeuwarden, The Netherlands
| | | | - Dimitry Y. Sorokin
- Winogradsky
Institute of Microbiology, Research Centre
of Biotechnology, Russian Academy of Sciences, Prospect 60-let Oktyabrya 7/2, Moscow, Russian Federation
- Department
of Biotechnology, Delft University of Technology, Van der Maasweg 9, 2629 HZ, Delft, The Netherlands
| | - Annemiek ter Heijne
- Environmental
Technology, Wageningen University, P.O. Box 17, 6700 AA Wageningen, The Netherlands
- E-mail:
| | | | - Yvonne M. Mos
- Environmental
Technology, Wageningen University, P.O. Box 17, 6700 AA Wageningen, The Netherlands
| | - Vinnie de Wilde
- Environmental
Technology, Wageningen University, P.O. Box 17, 6700 AA Wageningen, The Netherlands
| | - Karel J. Keesman
- Mathematical
and Statistical methods, Wageningen University, P.O. Box 16, 6700 AA Wageningen, The Netherlands
| | - Cees J.N. Buisman
- Environmental
Technology, Wageningen University, P.O. Box 17, 6700 AA Wageningen, The Netherlands
- Wetsus, European
Centre of Excellence for Sustainable Water
Technology, Oostergoweg
9, 8911 MA Leeuwarden, The Netherlands
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