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Chaghouri M, Gennequin C, Tidahy LH, Cazier F, Abi-Aad E, Veignie E, Rafin C. Low cost and renewable H 2S-biofilter inoculated with Trichoderma harzianum. ENVIRONMENTAL TECHNOLOGY 2024; 45:1508-1521. [PMID: 36377420 DOI: 10.1080/09593330.2022.2147024] [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: 07/11/2022] [Accepted: 11/02/2022] [Indexed: 06/16/2023]
Abstract
The use of biogas to produce hydrogen is currently gaining more attention. One of the drawbacks for the valorization of biogas is the presence of H2S, a hazardous molecule that can cause damage in the metallic internal structures of industries. In this study, the H2S-removal performance of a fungi-based biofilter was investigated. First, an H2S-resistant fungal species was isolated from an industrial digestate and identified as Trichoderma harzianum. The capacity of this microorganism to metabolize H2S in a mineral medium was confirmed. Then, a bioreactor was constructed and put in place to monitor the elimination of gaseous H2S. A mix of cardboard, perlite, woodchips, and wood pellets was used as filling. Microbial development and the outlet gas composition were monitored during a 60-day experimental process during which H2S was completely removed. 97% of the introduced sulphur was detected in the used filling material (fungal species + packing material) by elemental analysis. 24% of the detected sulphur was identified by ion-exchange chromatography as SO42-. Elemental analysis, gas chromatography, and ion-exchange chromatography were used to determine the bioreactor sulphur balance. Metagenomic analysis underlined that H2S elimination was due to the presence of Trichoderma harzianum with a H2S-specific bacterial consortium.
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Affiliation(s)
- Muriel Chaghouri
- Unité de Chimie Environnementale et Interactions sur le Vivant, UR4492, Université du Littoral Côte d'Opale, Dunkerque, France
| | - Cédric Gennequin
- Unité de Chimie Environnementale et Interactions sur le Vivant, UR4492, Université du Littoral Côte d'Opale, Dunkerque, France
| | - Lucette Haingomalala Tidahy
- Unité de Chimie Environnementale et Interactions sur le Vivant, UR4492, Université du Littoral Côte d'Opale, Dunkerque, France
| | - Fabrice Cazier
- Centre commun de mesures, Université du Littoral Côte d'Opale, Dunkerque, France
| | - Edmond Abi-Aad
- Unité de Chimie Environnementale et Interactions sur le Vivant, UR4492, Université du Littoral Côte d'Opale, Dunkerque, France
| | - Etienne Veignie
- Unité de Chimie Environnementale et Interactions sur le Vivant, UR4492, Université du Littoral Côte d'Opale, Dunkerque, France
| | - Catherine Rafin
- Unité de Chimie Environnementale et Interactions sur le Vivant, UR4492, Université du Littoral Côte d'Opale, Dunkerque, France
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Jia T, Zhang L, Sun S, Zhao Q, Peng Y. Adding organics to enrich mixotrophic sulfur-oxidizing bacteria under extremely acidic conditions-A novel strategy to enhance hydrogen sulfide removal. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 854:158768. [PMID: 36108867 DOI: 10.1016/j.scitotenv.2022.158768] [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: 06/27/2022] [Revised: 08/29/2022] [Accepted: 09/10/2022] [Indexed: 06/15/2023]
Abstract
Biotreatment of high load hydrogen sulfide (H2S) can lead to rapid acidification of a bioreactor, which greatly challenges the application of bio-desulfurization technology. In this study, the bio-desulfurization performance was improved by enriching acidophilic mixotrophic sulfur-oxidizing bacteria (SOB) by adding organics under extremely acidic conditions (pH < 1.0). A biotrickling filter (BTF) for the removal of H2S was established and operated under pH < 1.0 for 420 days. In the autotrophic period, the maximum H2S elimination capacity (ECmax-H2S) was 135.8 g/m3/h with biofilm mass remaining within 11.1 g/L-BTF. The autotrophic SOB bacterium Acidithiobacillus was dominant (62.1 %). When glucose was added to the BTF system, ECmax-H2S increased by 272 % to 464.3 g/m3/h as biofilm mass increased to 22.3 g/L-BTF. The acidophilic mixotrophic SOB bacteria Mycobacterium (78.4 %) and Alicyclobacillus (20.7 %) were enriched while Acidithiobacillus was gradually eliminated (<0.1 %). Furthermore, the major sulfur metabolism pathways were identified to explore the desulfurization mechanism under extremely acidic conditions. To maintain optimal desulfurization performance and avoid biofilm overgrowth in the BTF system, biofilm mass should be maintained within 20-22 g/L-BTF. This can be achieved by adding 1.0 g/L-BTF glucose every 20 days under a load rate of H2S in 50-90 g/m3/h and a trickling liquid velocity of 1.8 m/h. Extremely acidic conditions eliminated non-aciduric microorganisms so that the addition of organics can increase the abundance of acidophilic mixotrophic SOB (>99 %), thus offering a novel strategy for enhancing H2S removal.
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Affiliation(s)
- Tipei Jia
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Engineering Research Center of Beijing, Beijing University of Technology, Beijing 100124, China
| | - Liang Zhang
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Engineering Research Center of Beijing, Beijing University of Technology, Beijing 100124, China
| | - Shihao Sun
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Engineering Research Center of Beijing, Beijing University of Technology, Beijing 100124, China
| | - Qi Zhao
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Engineering Research Center of Beijing, Beijing University of Technology, Beijing 100124, China
| | - Yongzhen Peng
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Engineering Research Center of Beijing, Beijing University of Technology, Beijing 100124, China.
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Kumdhitiahutsawakul L, Jirachaisakdeacha D, Kantha U, Pholchan P, Sattayawat P, Chitov T, Tragoolpua Y, Bovonsombut S. Removal of Hydrogen Sulfide from Swine-Waste Biogas on a Pilot Scale Using Immobilized Paracoccus versutus CM1. Microorganisms 2022; 10:microorganisms10112148. [PMID: 36363739 PMCID: PMC9693040 DOI: 10.3390/microorganisms10112148] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 10/22/2022] [Accepted: 10/25/2022] [Indexed: 11/16/2022] Open
Abstract
Hydrogen sulfide (H2S) is a toxic and corrosive component that commonly occurs in biogas. In this study, H2S removal from swine-waste biogas using sulfur-oxidizing Paracoccus versutus CM1 immobilized in porous glass (PG) and polyurethane foam (PUF) biofilters was investigated. Bacterial compositions in the biofilters were also determined using polymerase chain reaction-denaturing gradient gel electrophoresis (PCR-DGGE). The biofilters were first tested on a laboratory scale under three space velocities (SV): 20, 30, and 40 h−1. Within 24 h, at an SV of 20 h−1, PG and PUF biofilters immobilized with P. versutus CM1 removed 99.5% and 99.7% of H2S, respectively, corresponding to the elimination capacities (EC) of 83.5 and 86.2 gm−3 h−1. On a pilot scale, with the horizontal PG-P. versutus CM1 biofilter operated at an SV of 30 h−1, a removal efficiency of 99.7% and a maximum EC of 113.7 gm−3 h−1 were achieved. No reduction in methane content in the outlet biogas was observed under these conditions. The PCR-DGGE analysis revealed that Paracoccus, Acidithiobacillus, and Thiomonas were the predominant bacterial genera in the biofilters, which might play important roles in H2S removal. This PG−P. versutus CM1 biofiltration system is highly efficient for H2S removal from swine-waste biogas.
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Affiliation(s)
- Ladapa Kumdhitiahutsawakul
- Division of Microbiology, Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Dolruedee Jirachaisakdeacha
- Division of Microbiology, Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Uthen Kantha
- Energy Research and Development Institute-Nakornping, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Patiroop Pholchan
- Department of Environmental Engineering, Faculty of Engineering, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Pachara Sattayawat
- Division of Microbiology, Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Thararat Chitov
- Division of Microbiology, Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
- Environmental Science Research Center (ESRC), Chiang Mai University, Chiang Mai 50200, Thailand
| | - Yingmanee Tragoolpua
- Division of Microbiology, Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
- Environmental Science Research Center (ESRC), Chiang Mai University, Chiang Mai 50200, Thailand
- Correspondence: (Y.T.); (S.B.); Tel.: +66-65-6688-529 (S.B.)
| | - Sakunnee Bovonsombut
- Division of Microbiology, Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
- Environmental Science Research Center (ESRC), Chiang Mai University, Chiang Mai 50200, Thailand
- Correspondence: (Y.T.); (S.B.); Tel.: +66-65-6688-529 (S.B.)
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Charnnok B, Laosiripojana N. Integrative process for rubberwood waste digestibility improvement and levulinic acid production by hydrothermal pretreatment with acid wastewater conversion process. BIORESOURCE TECHNOLOGY 2022; 360:127522. [PMID: 35764279 DOI: 10.1016/j.biortech.2022.127522] [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: 04/28/2022] [Revised: 06/22/2022] [Accepted: 06/23/2022] [Indexed: 06/15/2023]
Abstract
This study aimed to develop an integrative process for converting rubberwood waste into sugars, methane, and levulinic acid. Sulfuric acid pretreatment at pH 2.5 yielded the highest glucose of 182.5 g/kg rubberwood waste. Replacing the acid solution with sulfuric acid wastewater led to 11.0% lower glucose yield than that obtained using sulfuric acid. However, the cost reduction equals the difference in revenues between sulfuric acid wastewater and sulfuric acid, resulting in similar total cost and revenue. Furthermore, thermal reactions of the process water resulted in the highest yield of levulinic acid, 17.9% at 220 °C. Meanwhile, anaerobic digestibility of enzymatic hydrolysis residue was increased using inoculum from a digester treating pig farm wastewater owing to the acetoclastic pathway. These co-products potentially returned additional revenues, accounting for 45.8% of the total revenue. These findings highlight the potential pathway for valorization of rubberwood waste via the integrated approach with acid wastewater pretreatment.
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Affiliation(s)
- Boonya Charnnok
- Department of Specialized Engineering, Energy Technology Program, Faculty of Engineering, Prince of Songkla University, Hat Yai Campus, Hat Yai District, Songkhla Province 90110, Thailand; Department of Civil and Environmental Engineering, Faculty of Engineering, Prince of Songkla University, Hat Yai Campus, Hat Yai, Songkhla 90110, Thailand.
| | - Navadol Laosiripojana
- The Joint Graduate School for Energy and Environment (JGSEE), King Mongkut's University of Technology Thonburi, Prachauthit Road, Bangmod, Bangkok 10140, Thailand
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Torres-Herrera S, González-Cortés JJ, Almenglo F, Ramírez M, Cantero D. Development and validation of a sampling and analysis method to determine biogenic sulfur in a desulfurization bioreactor by gas chromatography coupled with a pulsed flame photometric detector (GC-PFPD). JOURNAL OF HAZARDOUS MATERIALS 2022; 424:127667. [PMID: 34763924 DOI: 10.1016/j.jhazmat.2021.127667] [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: 09/07/2021] [Revised: 10/12/2021] [Accepted: 10/29/2021] [Indexed: 06/13/2023]
Abstract
Suspended biomass bioreactors can be operated to remove H2S from biogas under anoxic conditions and produce elemental sulfur, the commercial value of which has been demonstrated. In the present paper, a novel methodology comprising the optimization of a determination method performed in a gas chromatograph equipped with a pulsed flame photometric detector (GC-PFPD), combined with a simple preparation based on filtration and extraction with toluene, is proposed. The injector temperature and carrier gas flow rate (QHe) values were optimized using a response surface methodology based on a face-centred composite central design. This optimization revealed that the optimum conditions were an injector temperature and carrier gas flow rate of 222 °C and 7 mL min-1, respectively. The chromatographic method shows an analysis time of 48 min, a detection limit of more than 5.9 mg L-1, a relative standard deviation of less than 3.71%, and a sulfur recovery percentage of more than 98%. These values provide excellent linearity and a reasonable concentration range (10-200 mg L-1). Finally, a measurement error of 4.45% was obtained when using the present method in a selectivity test.
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Affiliation(s)
- Sandra Torres-Herrera
- Department of Chemical Engineering and Food Technologies, Wine and Agrifood Research Institute (IVAGRO), Faculty of Sciences, University of Cadiz, 11510 Puerto Real, Cádiz, Spain
| | - J Joaquín González-Cortés
- Department of Chemical Engineering and Food Technologies, Wine and Agrifood Research Institute (IVAGRO), Faculty of Sciences, University of Cadiz, 11510 Puerto Real, Cádiz, Spain
| | - Fernando Almenglo
- Department of Chemical Engineering and Food Technologies, Wine and Agrifood Research Institute (IVAGRO), Faculty of Sciences, University of Cadiz, 11510 Puerto Real, Cádiz, Spain
| | - Martín Ramírez
- Department of Chemical Engineering and Food Technologies, Wine and Agrifood Research Institute (IVAGRO), Faculty of Sciences, University of Cadiz, 11510 Puerto Real, Cádiz, Spain.
| | - Domingo Cantero
- Department of Chemical Engineering and Food Technologies, Wine and Agrifood Research Institute (IVAGRO), Faculty of Sciences, University of Cadiz, 11510 Puerto Real, Cádiz, Spain
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Li X, Zou J, Zhang D, Xie L, Yuan Y. A new method for in-situ treatment of waste gas scrubbing liquid containing both NH 3 and H 2S based on sulfur autotrophic denitrification and partial nitrification-Anammox coupling system. BIORESOURCE TECHNOLOGY 2021; 329:124925. [PMID: 33676352 DOI: 10.1016/j.biortech.2021.124925] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Revised: 02/21/2021] [Accepted: 02/24/2021] [Indexed: 06/12/2023]
Abstract
In this study, an integrated device with scrubbing and biochemical treatment functions was used, and partial nitrification (PN)-Anammox and sulfur autotrophic denitrification (SADN) processes were coupled in a biochemical treatment pond to explore the feasibility of in-situ autotrophic removal of NH3 and H2S. The results showed that the removal efficiency of NH3 and H2S in waste gas are 95% and 87.5% respectively. The scrubbing liquid was efficiently treated in the biochemical treatment pond. Nitrogenous compounds weren't accumulated in liquid and converted to N2 by SADN and PN-Anammox coupling system. S2- was mainly used by SADN process to reduce NO3-. The scrubbing liquid processed by the biochemical treatment pond was refluxed to the scrubber to achieve continuous absorption of NH3 and H2S. Microbial community and functional microbial analysis showed that the PN-Anammox and SADN processes were the main processes to achieve the conversion of pollutants in the scrubbing liquid.
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Affiliation(s)
- Xiang Li
- 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, Suzhou 215009, China; Jiangsu Cooperative Innovation Center of Water Treatment Technology and Materials, Suzhou University of Science and Technology, Suzhou 215009, China.
| | - Jiayi Zou
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Dongyuan Zhang
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Linyan Xie
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Yan Yuan
- 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, Suzhou 215009, China; Jiangsu Cooperative Innovation Center of Water Treatment Technology and Materials, Suzhou University of Science and Technology, Suzhou 215009, China
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7
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Zhang Y, Oshita K, Kusakabe T, Takaoka M, Kawasaki Y, Minami D, Tanaka T. Simultaneous removal of siloxanes and H 2S from biogas using an aerobic biotrickling filter. JOURNAL OF HAZARDOUS MATERIALS 2020; 391:122187. [PMID: 32062547 DOI: 10.1016/j.jhazmat.2020.122187] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2019] [Revised: 01/01/2020] [Accepted: 01/24/2020] [Indexed: 06/10/2023]
Abstract
The feasibility of simultaneous removal of siloxane and H2S from biogas was investigated using an aerobic biotrickling filter (BTF). The biodegradation of H2S in the BTF followed a first-order kinetic model and more than 95 % H2S was eliminated within a residence time of 0.3 min. The removal of decamethylcyclopentasiloxane (D5) increased with longer empty bed residence time (EBRT). The partition test and microbial community analysis further reveals that up to 52 % removal of D5 was reached mainly by the chemical-absorption in acid recycling liquid. Finally, D5 was converted into mixtures of dimethylsilanediol (DMSD) and hexamethyldisiloxane (L2) via ring-opening hydrolysis in acid liquid and ring-shrinking polyreaction using CH4 derived from biogas. These operational characteristics demonstrate that the abiotic removal of D5, in addition to biological removal of H2S in an aerobic BTF can significantly decrease the siloxane loading to the downstream siloxane removing units.
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Affiliation(s)
- Yuyao Zhang
- Department of Environmental Engineering, Graduate School of Engineering, Kyoto University, C-cluster, Kyotodaigaku-katsura, Nishikyo-ku, Kyoto, 615-8540, Japan
| | - Kazuyuki Oshita
- Department of Environmental Engineering, Graduate School of Engineering, Kyoto University, C-cluster, Kyotodaigaku-katsura, Nishikyo-ku, Kyoto, 615-8540, Japan.
| | - Taketoshi Kusakabe
- Department of Environmental Engineering, Graduate School of Engineering, Kyoto University, C-cluster, Kyotodaigaku-katsura, Nishikyo-ku, Kyoto, 615-8540, Japan
| | - Masaki Takaoka
- Department of Environmental Engineering, Graduate School of Engineering, Kyoto University, C-cluster, Kyotodaigaku-katsura, Nishikyo-ku, Kyoto, 615-8540, Japan
| | - Yu Kawasaki
- Ebara Jitsugyo Co., Ltd., Ginza, Chuo-ku, Tokyo, Japan
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Yin Z, Feng S, Tong Y, Yang H. Adaptive mechanism of Acidithiobacillus thiooxidans CCTCC M 2012104 under stress during bioleaching of low-grade chalcopyrite based on physiological and comparative transcriptomic analysis. ACTA ACUST UNITED AC 2019; 46:1643-1656. [DOI: 10.1007/s10295-019-02224-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2019] [Accepted: 08/07/2019] [Indexed: 11/27/2022]
Abstract
Abstract
Acidithiobacillus thiooxidans (A. thiooxidans) is often used for sulfur-bearing ores bioleaching, but its adaptive mechanism to harsh environments remains unclear. Here, we explored the adaptive mechanism of A. thiooxidans in the process of low-grade chalcopyrite bioleaching based on the physiology and comparative transcriptome analysis. It was indicated that A. thiooxidans maintains intracellular pH homeostasis by regulating unsaturated fatty acids, especially cyclopropane fatty acids, intracellular ATP, amino acid metabolism, and antioxidant factors. Comparative transcriptome analysis indicated that the key genes involved in sulfur oxidation, sor and soxABXYZ, were significantly up-regulated, generating more energy to resist extreme environmental stress by more active sulfur metabolism. Confocal laser scanning microscope analysis found that down-regulation of flagellar-related genes was likely to promote the biofilm formation. System-level understanding of leaching microorganisms under extreme stress can contribute to the evolution of these extremophiles via genetic engineering modification work, which further improves bioleaching in future.
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Affiliation(s)
- Zongwei Yin
- The Key Laboratory of Industrial Biotechnology Ministry of Education Wuxi People’s Republic of China
- grid.258151.a 0000 0001 0708 1323 School of Biotechnology Jiangnan University 1800 Lihu Road Wuxi People’s Republic of China
- grid.258151.a 0000 0001 0708 1323 Key Laboratory of Carbohydrate Chemistry and Biotechnology (Jiangnan University) Ministry of Education Wuxi People’s Republic of China
| | - Shoushuai Feng
- The Key Laboratory of Industrial Biotechnology Ministry of Education Wuxi People’s Republic of China
- grid.258151.a 0000 0001 0708 1323 School of Biotechnology Jiangnan University 1800 Lihu Road Wuxi People’s Republic of China
- grid.258151.a 0000 0001 0708 1323 Key Laboratory of Carbohydrate Chemistry and Biotechnology (Jiangnan University) Ministry of Education Wuxi People’s Republic of China
| | - Yanjun Tong
- grid.258151.a 0000 0001 0708 1323 State Key Laboratory of Food Science and Technology Jiangnan University Wuxi People’s Republic of China
- grid.258151.a 0000 0001 0708 1323 School of Food Science and Technology Jiangnan University 1800 Lihu Road Wuxi People’s Republic of China
| | - Hailin Yang
- The Key Laboratory of Industrial Biotechnology Ministry of Education Wuxi People’s Republic of China
- grid.258151.a 0000 0001 0708 1323 School of Biotechnology Jiangnan University 1800 Lihu Road Wuxi People’s Republic of China
- grid.258151.a 0000 0001 0708 1323 Key Laboratory of Carbohydrate Chemistry and Biotechnology (Jiangnan University) Ministry of Education Wuxi People’s Republic of China
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9
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Salehi R, Chaiprapat S. Single-/triple-stage biotrickling filter treating a H 2S-rich biogas stream: Statistical analysis of the effect of empty bed retention time and liquid recirculation velocity. JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION (1995) 2019; 69:1429-1437. [PMID: 31343389 DOI: 10.1080/10962247.2019.1645761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Accepted: 07/12/2019] [Indexed: 06/10/2023]
Abstract
Biogas containing H2S has limited use in electricity and heat production as H2S can be corrosive to metal equipment. Bio-filtration has proved to be a suitable technology for biogas desulfurization because of economical and environmental benefits over physicochemical techniques. In the present study, a response surface methodology using 32 full factorial design was employed to determine the effects of two operating parameters, namely empty bed retention time (EBRT: 100-180 sec) and liquid recirculation velocity (LRV: 2.4-7.1 m3 m-2 h-1) on H2S removal efficiency (%) in single-stage and triple-stage bio-trickling filters (SBTF and TBTF) treating an H2S-rich biogas. Quadratic model was found to be the best predictive model for H2S removal efficiency. The results indicated that H2S removal efficiency was significantly influenced by the synergistic effect of linear terms of EBRT and LRV with a greater effect associated with EBRT. However, the quadratic term of LRV had an antagonistic effect. The quadratic term of EBRT and cross-product term between EBRT and LRV did not exhibit a significant effect on H2S removal efficiency. The predicted values from the established models showed a close agreement with the experimental data with the coefficient of determination (R2) of 0.99 for H2S removal efficiency in both SBTF and TBTF. Response analysis demonstrated that the performance of TBTF was superior compared to SBTF.Implications: Bio-trickling filter technology has gained a lot of attention for biogas desulfurization because it is economically and environmentally superior over chemical methods. Empty bed retention time (EBRT) and liquid recirculation velocity (LRV) are crucial variables influencing the performance of bio-trickling filters. In this work, the authors established a model that can properly predict H2S removal efficiency in a single/triple bio-trickling filter (SBTF and TBTF) treating H2S-rich biogas with regard to the individual and interaction effects between EBRT and LRV. Analysis with the help of response surface methodology indicated that TBTF was more efficient compared to SBTF for H2S removal.
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Affiliation(s)
- Reza Salehi
- Independent Researcher, Montreal, Quebec, Canada
| | - Sumate Chaiprapat
- Environmental Engineering, Department of Civil Engineering, Faculty of Engineering, Prince of Songkla University, Hat Yai Campus, Hat Yai, Thailand
- PSU Energy Systems Research Institute, Research and Development Office, Prince of Songkla University, Songkhla, Thailand
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10
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Tu X, Xu M, Li J, Li E, Feng R, Zhao G, Huang S, Guo J. Enhancement of using combined packing materials on the removal of mixed sulfur compounds in a biotrickling filter and analysis of microbial communities. BMC Biotechnol 2019; 19:52. [PMID: 31345193 PMCID: PMC6659214 DOI: 10.1186/s12896-019-0540-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Accepted: 07/05/2019] [Indexed: 11/23/2022] Open
Abstract
Background Packing materials is a critical design consideration when employing biological reactor to treat malodorous gases. The acidification of packing bed usually results in a significant drop in the removal efficiency. In the present study, a biotrickling filter (BTF2) packed with plastic balls in the upper layer and with lava rocks in the bottom layer, was proposed to mitigate the acidification. Results Results showed that using combined packing materials efficiently enhanced the removal performance of BTF2 when compared with BTF1, which was packed with sole lava rocks. Removal efficiencies of more than 92.5% on four sulfur compounds were achieved in BTF2. Average pH value in its bottom packing bed was about 4.86, significantly higher than that in BTF1 (2.85). Sulfate and elemental sulfur were observed to accumulate more in BTF1 than in BTF2. Analysis of principal coordinate analysis proved that structure of microbial communities in BTF2 changed less after the shutdown but more when the initial pH value was set at 5.5. Network analysis of significant co-occurrence patterns based on the correlations between microbial taxa revealed that BTF2 harbored more diverse microorganisms involving in the bio-oxidation of sulfur compounds and had more complex interactions between microbial species. Conclusions Results confirmed that using combined packing materials effectively improved conditions for the growth of microorganisms. The robustness of reactor against acidification, adverse temperature and gas supply shutdown was greatly enhanced. These provided a theoretical basis for using mixed packing materials to improve removal performance.
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Affiliation(s)
- Xiang Tu
- Guangdong Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, 510070, People's Republic of China.,State Key Laboratory of Applied Microbiology Southern China, Guangzhou, 510070, People's Republic of China.,Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangzhou, 510070, People's Republic of China
| | - Meiying Xu
- Guangdong Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, 510070, People's Republic of China.,State Key Laboratory of Applied Microbiology Southern China, Guangzhou, 510070, People's Republic of China.,Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangzhou, 510070, People's Republic of China
| | - Jianjun Li
- Guangdong Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, 510070, People's Republic of China. .,State Key Laboratory of Applied Microbiology Southern China, Guangzhou, 510070, People's Republic of China. .,Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangzhou, 510070, People's Republic of China.
| | - Enze Li
- Guangdong Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, 510070, People's Republic of China.,State Key Laboratory of Applied Microbiology Southern China, Guangzhou, 510070, People's Republic of China.,Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangzhou, 510070, People's Republic of China
| | - Rongfang Feng
- Guangdong Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, 510070, People's Republic of China.,State Key Laboratory of Applied Microbiology Southern China, Guangzhou, 510070, People's Republic of China.,Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangzhou, 510070, People's Republic of China
| | - Gang Zhao
- Guangdong Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, 510070, People's Republic of China.,State Key Laboratory of Applied Microbiology Southern China, Guangzhou, 510070, People's Republic of China.,Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangzhou, 510070, People's Republic of China
| | - Shaobin Huang
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, People's Republic of China
| | - Jun Guo
- Guangdong Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, 510070, People's Republic of China.,State Key Laboratory of Applied Microbiology Southern China, Guangzhou, 510070, People's Republic of China.,Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangzhou, 510070, People's Republic of China
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11
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Khanongnuch R, Di Capua F, Lakaniemi AM, Rene ER, Lens PNL. H 2S removal and microbial community composition in an anoxic biotrickling filter under autotrophic and mixotrophic conditions. JOURNAL OF HAZARDOUS MATERIALS 2019; 367:397-406. [PMID: 30611032 DOI: 10.1016/j.jhazmat.2018.12.062] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Revised: 12/16/2018] [Accepted: 12/17/2018] [Indexed: 06/09/2023]
Abstract
Removal of H2S from gas streams using NO3--containing synthetic wastewater was investigated in an anoxic biotrickling filter (BTF) at feed N/S ratios of 1.2-1.7 mol mol-1 with an empty bed residence time of 3.5 min and a hydraulic retention time of 115 min. During 108 days of operation under autotrophic conditions, the BTF showed a maximum elimination capacity (EC) of 19.2 g S m-3 h-1 and H2S removal efficiency (RE) >99%. When the BTF was operated under mixotrophic conditions by adding organic carbon (10.2 g acetate m-3 h-1) to the synthetic wastewater, the H2S EC decreased from 16.4 to 13.1 g S m-3 h-1, while the NO3- EC increased from 9.9 to 11.1 g NO3--N m-3 h-1, respectively. Thiobacillus sp. (98-100% similarity) was the only sulfur-oxidizing nitrate-reducing bacterium detected in the BTF biofilm, while the increased abundance of heterotrophic denitrifiers, i.e. Brevundimonas sp. and Rhodocyclales, increased the N/S ratio during BTF operation. Residence time distribution tests showed that biomass accumulation during BTF operation reduced gas and liquid retention times by 17.1% and 83.5%, respectively.
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Affiliation(s)
- Ramita Khanongnuch
- Laboratory of Chemistry and Bioengineering, Tampere University of Technology, P.O. Box 541, 33101, Tampere, Finland.
| | - Francesco Di Capua
- Department of Civil, Architectural and Environmental Engineering, University of Naples Federico II, 80125, Naples, Italy
| | - Aino-Maija Lakaniemi
- Laboratory of Chemistry and Bioengineering, Tampere University of Technology, P.O. Box 541, 33101, Tampere, Finland
| | - Eldon R Rene
- UNESCO-IHE Institute for Water Education, P.O. Box 3015, 2601 DA, Delft, the Netherlands
| | - Piet N L Lens
- Laboratory of Chemistry and Bioengineering, Tampere University of Technology, P.O. Box 541, 33101, Tampere, Finland; UNESCO-IHE Institute for Water Education, P.O. Box 3015, 2601 DA, Delft, the Netherlands
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12
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Wang R, Lin JQ, Liu XM, Pang X, Zhang CJ, Yang CL, Gao XY, Lin CM, Li YQ, Li Y, Lin JQ, Chen LX. Sulfur Oxidation in the Acidophilic Autotrophic Acidithiobacillus spp. Front Microbiol 2019; 9:3290. [PMID: 30687275 PMCID: PMC6335251 DOI: 10.3389/fmicb.2018.03290] [Citation(s) in RCA: 107] [Impact Index Per Article: 21.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Accepted: 12/18/2018] [Indexed: 12/12/2022] Open
Abstract
Sulfur oxidation is an essential component of the earth's sulfur cycle. Acidithiobacillus spp. can oxidize various reduced inorganic sulfur compounds (RISCs) with high efficiency to obtain electrons for their autotrophic growth. Strains in this genus have been widely applied in bioleaching and biological desulfurization. Diverse sulfur-metabolic pathways and corresponding regulatory systems have been discovered in these acidophilic sulfur-oxidizing bacteria. The sulfur-metabolic enzymes in Acidithiobacillus spp. can be categorized as elemental sulfur oxidation enzymes (sulfur dioxygenase, sulfur oxygenase reductase, and Hdr-like complex), enzymes in thiosulfate oxidation pathways (tetrathionate intermediate thiosulfate oxidation (S4I) pathway, the sulfur oxidizing enzyme (Sox) system and thiosulfate dehydrogenase), sulfide oxidation enzymes (sulfide:quinone oxidoreductase) and sulfite oxidation pathways/enzymes. The two-component systems (TCSs) are the typical regulation elements for periplasmic thiosulfate metabolism in these autotrophic sulfur-oxidizing bacteria. Examples are RsrS/RsrR responsible for S4I pathway regulation and TspS/TspR for Sox system regulation. The proposal of sulfur metabolic and regulatory models provide new insights and overall understanding of the sulfur-metabolic processes in Acidithiobacillus spp. The future research directions and existing barriers in the bacterial sulfur metabolism are also emphasized here and the breakthroughs in these areas will accelerate the research on the sulfur oxidation in Acidithiobacillus spp. and other sulfur oxidizers.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | - Jian-Qun Lin
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, China
| | - Lin-Xu Chen
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, China
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13
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Brito J, Valle A, Almenglo F, Ramírez M, Cantero D. Progressive change from nitrate to nitrite as the electron acceptor for the oxidation of H2S under feedback control in an anoxic biotrickling filter. Biochem Eng J 2018. [DOI: 10.1016/j.bej.2018.08.017] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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14
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Sun Z, Yang B, Ding C, Li Z, Wang L. Enhanced removal of gaseous 1,3-dichlorobenzene in biotrickling filters by rhamnolipid and Mg (II). JOURNAL OF HAZARDOUS MATERIALS 2018; 360:571-577. [PMID: 30149343 DOI: 10.1016/j.jhazmat.2018.08.054] [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: 04/24/2018] [Revised: 07/12/2018] [Accepted: 08/15/2018] [Indexed: 06/08/2023]
Abstract
In this study, the effect of rhamnolipid and Mg (II) on microbial growth and 1,3-dichlorobenzene removal was investigated in two identical lab-scale biotrickling filters (named BTF1 and BTF2). The contact angle and Henry's constant were detected at various concentrations of rhamnolipid and the results indicated that rhamnolipid is able to effectively improve the solubility of 1,3-dichlorobenzene in medium. The results of the experiments in BTFs showed that the optimal concentrations of rhamnolipid and Mg (II) were 170 mg/L and 2 mg/L, respectively. The removal efficiency (RE) of 1,3-dichlorobenzene decreased from 100% to 57.13% for BTF1 that was not fed with rhamnolipid and Mg (II) and from 100% to 86.26% for BTF2 that was fed with rhamnolipid and Mg (II) when the inlet loading rate increased from 2.87 to 83.83 g/(m3 h) at an empty bed residence time (EBRT) of 60 s. The dissolved oxygen (DO) was analyzed throughout the entire period and the results showed that the two additives can significantly promote oxygen transfer. In addition, the microbial adhesive strength and community were observed and compared to show the positive role of rhamnolipid and Mg (II).
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Affiliation(s)
- Zhuqiu Sun
- School of Environmental Science and Engineering, Yancheng Institute of Technology, Yancheng, Jiangsu, 224000, PR China; Environmental Simulation and Pollution Control State Key Joint Laboratory, School of Environment, Tsinghua University, Beijing, 100084, PR China
| | - Bairen Yang
- School of Environmental Science and Engineering, Yancheng Institute of Technology, Yancheng, Jiangsu, 224000, PR China; School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou, Jiangsu, 221116, PR China
| | - Cheng Ding
- School of Environmental Science and Engineering, Yancheng Institute of Technology, Yancheng, Jiangsu, 224000, PR China.
| | - Zhaoxia Li
- School of Environmental Science and Engineering, Yancheng Institute of Technology, Yancheng, Jiangsu, 224000, PR China
| | - Liping Wang
- School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou, Jiangsu, 221116, PR China
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16
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Liu N, Gong C, Jiang J, Yan F, Tian S. Controlling odors from sewage sludge using ultrasound coupled with Fenton oxidation. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2016; 181:124-128. [PMID: 27341372 DOI: 10.1016/j.jenvman.2016.05.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Revised: 04/26/2016] [Accepted: 05/03/2016] [Indexed: 06/06/2023]
Abstract
We examined the effects of ultrasound (U), Fenton oxidation (F), and ultrasound coupled with Fenton oxidation (U + F) pre-treatments (prior to anaerobic digestion) on the elimination of odorous compounds. The results demonstrated that U promoted odor release, while the coupled treatment and F alone decreased odor release. After 20-min treatments, the concentration of dissolved sulfide (S(2-)) under the coupled U + F treatment declined from 17.4 mg/L to 8.1 mg/L, decreasing by more than 50% and 34%, respectively, for U alone and F alone. In addition, the dissolved sulfate (SO4(2-)) concentration under couple U + F treatment significantly increased in sewage sludge from 200 mg/L to 390.6 mg/L, up 95.3% compared to U alone and 5% compared to F alone. This illustrates the oxidation process from S(2-) to SO4(2-). Throughout experimentation, SO4(2-) was odorless and stable, highlighting the mechanism of odor control. Thus, combining U and F into a single coupled treatment proved to be a better alternative pretreatment for controlling sludge odor compared to the U and F alone and can effectively decrease potential odor release.
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Affiliation(s)
- Nuo Liu
- School of Environment, Tsinghua University, Beijing 100084, China
| | - Changxiu Gong
- School of Environment, Tsinghua University, Beijing 100084, China
| | - Jianguo Jiang
- School of Environment, Tsinghua University, Beijing 100084, China; Key Laboratory for Solid Waste Management and Environment Safety, Ministry of Education of China, China; Collaborative Innovation Center for Regional Environmental Quality, Tsinghua University, Beijing, China.
| | - Feng Yan
- School of Environment, Tsinghua University, Beijing 100084, China
| | - Sicong Tian
- School of Environment, Tsinghua University, Beijing 100084, China
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Gerrity S, Kennelly C, Clifford E, Collins G. Hydrogen sulfide oxidation in novel Horizontal-Flow Biofilm Reactors dominated by an Acidithiobacillus and a Thiobacillus species. ENVIRONMENTAL TECHNOLOGY 2016; 37:2252-2264. [PMID: 26829048 DOI: 10.1080/09593330.2016.1147609] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2015] [Accepted: 01/25/2016] [Indexed: 06/05/2023]
Abstract
Hydrogen Sulfide (H2S) is an odourous, highly toxic gas commonly encountered in various commercial and municipal sectors. Three novel, laboratory-scale, Horizontal-Flow Biofilm Reactors (HFBRs) were tested for the removal of H2S gas from air streams over a 178-day trial at 10°C. Removal rates of up to 15.1 g [H2S] m(-3) h(-1) were achieved, demonstrating the HFBRs as a feasible technology for the treatment of H2S-contaminated airstreams at low temperatures. Bio-oxidation of H2S in the reactors led to the production of H(+) and sulfate (SO(2-)4) ions, resulting in the acidification of the liquid phase. Reduced removal efficiency was observed at loading rates of 15.1 g [H2S] m(-3) h(-1). NaHCO3 addition to the liquid nutrient feed (synthetic wastewater (SWW)) resulted in improved H2S removal. Bacterial diversity, which was investigated by sequencing and fingerprinting 16S rRNA genes, was low, likely due to the harsh conditions prevailing in the systems. The HFBRs were dominated by two species from the genus Acidithiobacillus and Thiobacillus. Nonetheless, there were significant differences in microbial community structure between distinct HFBR zones due to the influence of alkalinity, pH and SO4 concentrations. Despite the low temperature, this study indicates HFBRs have an excellent potential to biologically treat H2S-contaminated airstreams.
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Affiliation(s)
- S Gerrity
- a Microbial Communities Laboratory, School of Natural Sciences , National University of Ireland Galway , Galway , Ireland
| | - C Kennelly
- b Civil Engineering, College of Engineering and Informatics , National University of Ireland Galway , Galway , Ireland
| | - E Clifford
- b Civil Engineering, College of Engineering and Informatics , National University of Ireland Galway , Galway , Ireland
- c Ryan Institute for Environmental, Marine and Energy Research , National University of Ireland Galway , Galway , Ireland
| | - G Collins
- a Microbial Communities Laboratory, School of Natural Sciences , National University of Ireland Galway , Galway , Ireland
- c Ryan Institute for Environmental, Marine and Energy Research , National University of Ireland Galway , Galway , Ireland
- d School of Engineering , University of Glasgow , Glasgow , UK
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Comparison of Removal Behavior of Two Biotrickling Filters under Transient Condition and Effect of pH on the Bacterial Communities. PLoS One 2016; 11:e0155593. [PMID: 27196300 PMCID: PMC4873206 DOI: 10.1371/journal.pone.0155593] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2015] [Accepted: 05/02/2016] [Indexed: 11/22/2022] Open
Abstract
Although biotrickling filters (BTFs) applied under acidic condition to remove H2S from waste gases have been reported, the removal behavior of the acidic BTF under transient condition which was normal in most industry processes, and corresponding bacterial community have not been thoroughly studied. In the present study, two BTFs were run under neutral (BTFn) and acidic (BTFa) conditions, respectively. The results revealed that the removal performance of BTFa under transient condition was superior to that of BTFn; the maximum H2S eliminating capacities (ECs) achieved by BTFa and BTFn were 489.9 g/m3 h and 443.6 g/m3 h, respectively. High-throughput sequencing suggested that pH was the critical factor and several other factors including nutrient and the inlet loadings also had roles in shaping bacterial community structure. Acidithiobacillus was the most abundant bacterial group. The results indicated that BTF acclimation under acidic condition may facilitate generating microbial community with high H2S-degrading capability.
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Chaiprapat S, Charnnok B, Kantachote D, Sung S. Bio-desulfurization of biogas using acidic biotrickling filter with dissolved oxygen in step feed recirculation. BIORESOURCE TECHNOLOGY 2015; 179:429-435. [PMID: 25569031 DOI: 10.1016/j.biortech.2014.12.068] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2014] [Revised: 12/17/2014] [Accepted: 12/20/2014] [Indexed: 06/04/2023]
Abstract
Triple stage and single stage biotrickling filters (T-BTF and S-BTF) were operated with oxygenated liquid recirculation to enhance bio-desulfurization of biogas. Empty bed retention time (EBRT 100-180 s) and liquid recirculation velocity (q 2.4-7.1 m/h) were applied. H2S removal and sulfuric acid recovery increased with higher EBRT and q. But the highest q at 7.1 m/h induced large amount of liquid through the media, causing a reduction in bed porosity in S-BTF and H2S removal. Equivalent performance of S-BTF and T-BTF was obtained under the lowest loading of 165 gH2S/m(3)/h. In the subsequent continuous operation test, it was found that T-BTF could maintain higher H2S elimination capacity and removal efficiency at 175.6±41.6 gH2S/m(3)/h and 89.0±6.8% versus S-BTF at 159.9±42.8 gH2S/m(3)/h and 80.1±10.2%, respectively. Finally, the relationship between outlet concentration and bed height was modeled. Step feeding of oxygenated liquid recirculation in multiple stages clearly demonstrated an advantage for sulfide oxidation.
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Affiliation(s)
- Sumate Chaiprapat
- Energy Technology Research Center, Department of Civil Engineering, Faculty of Engineering, Prince of Songkla University, Hat Yai Campus, Hat Yai, Songkhla 90110, Thailand.
| | - Boonya Charnnok
- Faculty of Environmental Management and PSU Energy System Research Institute (PERIN), Prince of Songkla University, Hat Yai Campus, Hat Yai, Songkhla 90110, Thailand
| | - Duangporn Kantachote
- Department of Microbiology, Faculty of Science, Prince of Songkla University, Hat Yai Campus, Hat Yai, Songkhla 90110, Thailand
| | - Shihwu Sung
- College of Agriculture, Forestry and Natural Resource Management, University of Hawaii at Hilo, Hilo, Hawaii 96720-4091, USA
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Zhang CZ, Zhang WJ, Xu J. Isolation and identification of methanethiol-utilizing bacterium CZ05 and its application in bio-trickling filter of biogas. BIORESOURCE TECHNOLOGY 2013; 150:338-343. [PMID: 24185035 DOI: 10.1016/j.biortech.2013.10.024] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2013] [Revised: 10/01/2013] [Accepted: 10/07/2013] [Indexed: 06/02/2023]
Abstract
A bacterium capable of methanethiol (MT) degradation was enriched and isolated by employing activated sewage sludge as the inoculum in a mineral medium containing MT. The isolate was identified as Paenibacillus polymyxa CZ05 through a Biolog test and 16S rDNA sequencing. This strain can utilize both organic and inorganic media and thrives at pH 4 to 9. The batch culture showed that the strain can degrade MT better in the No. 4 medium than in the No. 1 medium. A series-operating biotrickling filter with lava stone as the carrier was employed to test the application of P. polymyxa CZ05 in the removal of MT in simulated biogas. Long-term experiments showed that a high concentration of MT (60 ppm) was efficiently removed (99.5%) by the biotrickling filters at EBRT 30 s. The addition of hydrogen sulfide decreased the MT removal rate because the dissolved oxygen competed with MT.
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Affiliation(s)
- Chao-zheng Zhang
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China; Key Laboratory of Ministry of Education Industrial Fermentation Microbiology, Tianjin Key Laboratory of Industrial Microbiology, Tianjin University of Science and Technology, Tianjin 300457, PR China
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Li L, Han Y, Yan X, Liu J. H2S removal and bacterial structure along a full-scale biofilter bed packed with polyurethane foam in a landfill site. BIORESOURCE TECHNOLOGY 2013; 147:52-58. [PMID: 23989036 DOI: 10.1016/j.biortech.2013.07.143] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2013] [Revised: 07/18/2013] [Accepted: 07/21/2013] [Indexed: 06/02/2023]
Abstract
Hydrogen sulfide accumulated under a cover film in a landfill site was treated for 7 months by a full-scale biofilter packed with polyurethane foam cubes. Sampling ports were set along the biofilter bed to investigate H2S removal and microbial characteristics in the biofilter. The H2S was removed effectively by the biofilter, and over 90% removal efficiency was achieved in steady state. Average elimination capacity of H2S was 2.21 g m(-3) h(-1) in lower part (LPB) and 0.41 g m(-3) h(-1) in upper part (UPB) of the biofilter. Most H2S was eliminated in LPB. H2S concentration varied along the polyurethane foam packed bed, the structure of the bacterial communities showed spatial variation in the biofilter, and H2S removal as well as products distribution changed accordingly. The introduction of odorants into the biofilter shifted the distribution of the existing microbial populations toward a specific culture that could metabolize the target odors.
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Affiliation(s)
- Lin Li
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
| | - Yunping Han
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
| | - Xu Yan
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
| | - Junxin Liu
- Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
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Dechrugsa S, Kantachote D, Chaiprapat S. Effects of inoculum to substrate ratio, substrate mix ratio and inoculum source on batch co-digestion of grass and pig manure. BIORESOURCE TECHNOLOGY 2013; 146:101-108. [PMID: 23916981 DOI: 10.1016/j.biortech.2013.07.051] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2013] [Revised: 07/09/2013] [Accepted: 07/13/2013] [Indexed: 06/02/2023]
Abstract
Biochemical methane potential (BMP) assay was conducted at 35 °C to evaluate the effects of inoculum to substrate ratio (ISR) and substrate mix ratio between para-grass and pig manure co-digesting using different inocula. Rubber latex digester (RLD) inoculum showed higher methanogenic activity (41.4 mL CH4/gVS) than pig farm digester (PFD) inoculum (37.3 mL CH4/gVS). However, the maximum methane yields, occurred at the highest para-grass mix ratio (G), were 369.6, 437.6, 465.9 and 442.6 mL CH4/gTSadded for RLD inoculum, versus 332.4, 475.0, 519.5 and 521.9 mL/gTSadded for PFD inoculum at ISR 1, 2, 3, and 4, respectively. HPr, HBu and HVa appeared at higher G, corresponding to substrate's higher biodegradability. Response surface indicated that higher ISR and G had a significantly positive impact on methane yield. It suggested the use of higher ISR, i.e. 3 or 4, for BMP assay of these co-substrates. Dominant species of fermentative bacteria in each inoculum was tested by DGGE.
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Affiliation(s)
- Sumeth Dechrugsa
- International Postgraduate Program in Environmental Management, Graduate School, Chulalongkorn University, Bangkok 10330, Thailand; Center of Excellence on Hazardous Substance Management (HSM), Bangkok 10330, Thailand
| | - Duangporn Kantachote
- Department of Microbiology, Faculty of Science, Prince of Songkla University, Hat Yai Campus, Hat Yai, Songkhla 90110, Thailand
| | - Sumate Chaiprapat
- Energy Technology Research Center, Department of Civil Engineering, Faculty of Engineering, Prince of Songkla University, Hat Yai Campus, Hat Yai, Songkhla 90110, Thailand; Center of Excellence for Environmental and Hazardous Waste Management (EHWM), Southern University Consortium, Prince of Songkla University, Hat Yai Campus, Hat Yai, Songkhla 90110, Thailand.
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Lee EJ, Lim KH. Transient Behavior of Hybrid System Composed of a Photo-Catalytic Reactor and a Biofilter to Treat Waste-Air Containing Highly Concentrated-Hydrogen Sulfide with High Loading. JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 2013. [DOI: 10.1252/jcej.13we076] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Eun Ju Lee
- Department of Chemical Engineering, Daegu University
| | - Kwang-Hee Lim
- Department of Chemical Engineering, Daegu University
- Research Institute for Industrial and Environmental Waste Air Treatment
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