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Yuan M, Shan Q, Fu M, Deng M, Wang J, Deng F. Larger hydroxyapatite aggregation from Ca 2+ adhesion in ANAMMOX granular sludge caused by high dissolved oxygen. CHEMOSPHERE 2024; 350:141158. [PMID: 38199496 DOI: 10.1016/j.chemosphere.2024.141158] [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: 09/25/2023] [Revised: 12/03/2023] [Accepted: 01/07/2024] [Indexed: 01/12/2024]
Abstract
Anaerobic ammonia oxidation (ANAMMOX), a sustainable biological process, is promising to remove NH4+-N from municipal sewage. In this study, results showed that the anammox granular sludge morphology changes with the alternation of dissolved oxygen (DO), mainly attributing to the adhesion of calcium ions (Ca2+) to the surface of sludge particles. Diverse characterization methods revealed that gray adhesions in the form of hydroxyapatite covered the original holes on the anammox granular sludge surface, including scanning Electron Microscopy (SEM), digital camera images, Energy Dispersive Spectrometer (EDS), and X-ray diffraction (XRD). Ex-situ degradation of NH4+-N and NO2--N yielded diverse outcomes. The protein to polysaccharide ratio (PN/PS) in the total extracellular polymeric substances (EPS) across 4 size groups demonstrated a decrease under O2 exposure. Microbial community analysis indicated norank_f_A4b and Nitrolancea being the most abundant genus under O2 exposure at day 1 and day 100, respectively. These findings offer an effective strategy to prevent size-larger granular sludge from deteriorating through changing DO and Ca2+ in municipal wastewater in ANAMMOX.
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Affiliation(s)
- Mu Yuan
- School of Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Qiu Shan
- School of Environment, Harbin Institute of Technology, Harbin, 150090, China; State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China.
| | - Mengqi Fu
- School of Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Mengxuan Deng
- School of Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Jue Wang
- School of Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Fengxia Deng
- School of Environment, Harbin Institute of Technology, Harbin, 150090, China; State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China
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Song J, Zhang S, Du L, Gao C, Xie L, Shi Y, Su L, Ma Y, Ren S. Synthesis, characterization and application of oligomeric proanthocyanidin-rich dual network hydrogels. Sci Rep 2023; 13:17754. [PMID: 37853007 PMCID: PMC10584812 DOI: 10.1038/s41598-023-42921-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Accepted: 09/16/2023] [Indexed: 10/20/2023] Open
Abstract
A structurally dense hydrogel, with strong hydrogen bonding networks, was formed from poly(vinyl alcohol), sodium alginate, and oligomeric proanthocyanidins, using a combination of freeze-thaw cycles and calcium ion cross-linking. The structure of the hydrogel was characterized by scanning electron microscopy and Fourier transform infrared spectroscopy. Mechanical testing and thermogravimetric analysis showed that incorporation of proanthocyanidins enhanced both the mechanical properties and the thermal stability of the hydrogel. The hydrogel was also demonstrated to have excellent ultraviolet resistance and antioxidant properties. The hydrogel was further shown that this hydrogel is also capable of generating electrochemical reactions, which strongly suggests that this hydrogel has exciting potential in many fields.
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Affiliation(s)
- Jie Song
- Key Laboratory of Bio-Based Material Science & Technology (Northeast Forestry University), Ministry of Education, Harbin, 150040, People's Republic of China
- College of Material Science and Engineering, Northeast Forestry University, Harbin, People's Republic of China, 150040
| | - Shuyu Zhang
- Key Laboratory of Bio-Based Material Science & Technology (Northeast Forestry University), Ministry of Education, Harbin, 150040, People's Republic of China
- College of Material Science and Engineering, Northeast Forestry University, Harbin, People's Republic of China, 150040
| | - Liuping Du
- Key Laboratory of Bio-Based Material Science & Technology (Northeast Forestry University), Ministry of Education, Harbin, 150040, People's Republic of China
- College of Material Science and Engineering, Northeast Forestry University, Harbin, People's Republic of China, 150040
| | - Chong Gao
- College of Material Science and Engineering, Northeast Forestry University, Harbin, People's Republic of China, 150040
| | - Longyue Xie
- College of Material Science and Engineering, Northeast Forestry University, Harbin, People's Republic of China, 150040
| | - Yu Shi
- College of Engineering and Technology, Northeast Forestry University, Harbin, People's Republic of China, 150040
| | - Ling Su
- Yantai Vocational College, Yantai City, People's Republic of China, 264670.
| | - Yanli Ma
- Key Laboratory of Bio-Based Material Science & Technology (Northeast Forestry University), Ministry of Education, Harbin, 150040, People's Republic of China
- College of Material Science and Engineering, Northeast Forestry University, Harbin, People's Republic of China, 150040
| | - Shixue Ren
- Key Laboratory of Bio-Based Material Science & Technology (Northeast Forestry University), Ministry of Education, Harbin, 150040, People's Republic of China.
- College of Material Science and Engineering, Northeast Forestry University, Harbin, People's Republic of China, 150040.
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Zhong ZH, Zhang YQ. Green immobilization and efficient proliferation of Escherichia coli cells in polyvinyl alcohol hydrogel membranes by unidirectional nanopore dehydration. Microb Cell Fact 2022; 21:264. [PMID: 36536406 PMCID: PMC9764694 DOI: 10.1186/s12934-022-01995-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Accepted: 12/15/2022] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND The immobilized technology for microbial or cells has the advantages of high microbial activity, high microbial density per unit space, good tolerance, strong shock, load resistance, high processing efficiency, and high reuse rate. It is now widely used in environmental remediation, water quality treatment, biodegradation, food industry, chemical analysis, energy development, medicine and pharmaceuticals, and other fields. RESULTS A novel Escherichia coli cell-immobilizing polyvinyl alcohol hydrogel membrane (ECI-PVAHM) was prepared by unidirectional nanopore dehydration (UND) from a 10% polyvinyl alcohol (PVA) aqueous solution containing enhanced green fluorescent protein-labeled E. coli. This bacteria-loaded film has high water stability, flexibility, transparency, and mechanical robustness. Its tensile strength, elongation rate, and swelling rate are in the ranges 0.66-0.90 MPa, 300-390%, and 330-800%, respectively. The effective bacterial load of ECI-PVAHM is 2.375 × 109-1010 CFU/g (dry weight), which does not affect the original crystal structure of the PVAHM. This biofilm has a porous network structure with pore sizes between 0.2 and 1.0 μm, and these cells are embedded in the PVAHM network. When the immobilized cells were continuously cultured for 20 days, and the medium was renewed twice daily, their relative proliferation efficiency after 40 cycles could still be maintained at ~ 91%. CONCLUSION The above results show that the cell division, proliferation ability, and metabolic activity of immobilized E. coli were not affected by the physical barrier of the porous network structure of the hydrogel. This UND-based ECI-PVAHM has potential applications in molecular biology, biopharmaceutical expression and production, bioreactors, and fuel cells.
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Affiliation(s)
- Zhi-Hao Zhong
- grid.263761.70000 0001 0198 0694School of Biology and Basic Medical Sciences, Medical College, Soochow University, RM702-2303, No. 199, Renai Road, Industrial Park, Suzhou, 215123 China
| | - Yu-Qing Zhang
- grid.263761.70000 0001 0198 0694School of Biology and Basic Medical Sciences, Medical College, Soochow University, RM702-2303, No. 199, Renai Road, Industrial Park, Suzhou, 215123 China
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Wang X, Yang H, Liu X, Su Y. Effects of biomass and environmental factors on nitrogen removal performance and community structure of an anammox immobilized filler. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 710:135258. [PMID: 31866106 DOI: 10.1016/j.scitotenv.2019.135258] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Revised: 10/25/2019] [Accepted: 10/27/2019] [Indexed: 06/10/2023]
Abstract
In order to reduce the loss of anaerobic ammonia oxidation (anammox) sludge and stabilize the reaction microenvironment, polyvinyl alcohol - polypropylene (PVA-PP) was used to encapsulate anammox bacteria on a filler. The influence of different inoculation amounts (2, 4, 6 and 8%) on the overall nitrogen removal process was first compared and then the anammox characteristics of the immobilized filler under the influence of different environmental factors were evaluated through batch experiments. The results show that the biomass only affected the growth rate of the activity during the logarithmic phase, while the total nitrogen removal rate (NRR) tended to be similar after 99 d of culture. The NRR reached 1.83 kg·(m3·d)-1 on day 140, which was 9.4 times that of suspended sludge before encapsulation, and the structure of embedding filler was complete without shedding. Scanning electron microscopy (SEM) showed that the internal porous network structure formed channels and a large number of anammox bacteria were observed around. Microbial community analysis of the 16S rDNA gene showed that the diversity was maintained in the entrapped carrier. Furthermore, the effective enrichment of the anammox functional bacteria Candidatus Kuenenia (AF375995.1) increarsed from 11.06% to 32.55%. The PVA-PP immobilized filler fit well with the biological nitrogen removal kinetic model and could also achieve coupling of anammox and denitrification. The inhibition effect of the organic carbon source interference and starvation on anammox bacteria was significantly weakened.
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Affiliation(s)
- XiaoTong Wang
- Key Laboratory of Beijing for Water Quality Science and Water Environmental Recovery Engineering, College of Architectural Engineering, Beijing University of Technology, Beijing 100124, China
| | - Hong Yang
- Key Laboratory of Beijing for Water Quality Science and Water Environmental Recovery Engineering, College of Architectural Engineering, Beijing University of Technology, Beijing 100124, China.
| | - XuYan Liu
- Key Laboratory of Beijing for Water Quality Science and Water Environmental Recovery Engineering, College of Architectural Engineering, Beijing University of Technology, Beijing 100124, China
| | - Yang Su
- Key Laboratory of Beijing for Water Quality Science and Water Environmental Recovery Engineering, College of Architectural Engineering, Beijing University of Technology, Beijing 100124, China
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Abstract
Microbial whole cells are efficient, ecological, and low-cost catalysts that have been successfully applied in the pharmaceutical, environmental, and alimentary industries, among others.Microorganism immobilization is a good way to carry out the bioprocess under preparative conditions. The main advantages of this methodology lie in their high operational stability, easy upstream separation, and bioprocess scale-up feasibility.Cell entrapment is the most widely used technique for whole cell immobilization. This technique-in which the cells are included within a rigid network-is porous enough to allow the diffusion of substrates and products, protects the selected microorganism from the reaction medium, and has high immobilization efficiency (100% in most cases).
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Screening and Immobilizing the Denitrifying Microbes in Sediment for Bioremediation. WATER 2019. [DOI: 10.3390/w11030614] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
In this study, immobilized microbial beads were proposed as a solution for excessive nitrogen concentration of the river sediment. The predominant denitrifying microbes were screened from the river sediment. The optimized production of immobilized microbial beads and long-term nitrogen removal efficiency were investigated. 16S rRNA gene sequencing analysis showed that denitrifying bacteria such as Pseudomonas, Alcaligenes, Proteiniclasticum, Achromobacter and Methylobacillus were dominant microflora in the enriched microbial agent, which accounted for 94.43% of the total microbes. Pseudomonas belongs to Gammaproteo bacteria, accounting for 49.22% and functioned as the most predominant denitrifying bacteria. The material concentration of 8% polyvinyl alcohol, 0.5% sodium alginate and 12.5% microbial biomass were found to be the optimal immobilizing conditions. The NH4+-N and total nitrogen (TN) removal rates in sediment with dosing immobilized microbial beads were estimated as 68.1% and 67.8%, respectively, when compared to the dosing liquid microbial agent were 50.5% and 49.3%. Meanwhile, the NH4+-N and TN removal rates in overlying water went up from 53.14% to 59.69% and from 68.03% to 78.13%, respectively, by using immobilized microbial beads.
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Ding S, Fang D, Pang Z, Luo B, Kuang L, Wang H, Zhang Q, Shen Q, Ji F. Immobilization of powdery calcium silicate hydrate via PVA covalent cross-linking process for phosphorus removal. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 645:937-945. [PMID: 30032089 DOI: 10.1016/j.scitotenv.2018.07.197] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Revised: 07/15/2018] [Accepted: 07/15/2018] [Indexed: 06/08/2023]
Abstract
Calcium silicate hydrate (CSH) is a popular material used for phosphorus removal in recent years. In this work, a novel immobilized material, polyvinyl alcohol-CSH (PVA-CSH), was prepared using a 1:10 weight ratio of CSH powder to 8% PVA solution and then used for phosphorus removal. Samples were characterized by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The adsorption mechanism and practical application properties of phosphorus wastewater were studied by sequential batch and continuous flow experiment. The results showed PVA-CSH possessed a porous network structure and an average pore diameter of 24.94 ± 0.11 nm. Furthermore, the CSH functional groups were unaffected by PVA immobilization. Compared with CSH, PVA-CSH did not easily lose CSH after being immobilized by PVA, and the duration of efficient phosphorus removal stage was approximately 20 h longer than that of CSH. In addition, the effluent turbidity of PVA-CSH was 0.11 ± 0.03 NTU during the continuous operation period, which was significantly lower than CSH. In summary, this research study demonstrated the significant potential of PVA-CSH for practical phosphorus removal.
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Affiliation(s)
- Shilin Ding
- Key Laboratory of Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, China
| | - Dexin Fang
- Key Laboratory of Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, China
| | - Zishan Pang
- Chongqing Yuxi Water Co., Ltd, Chongqing 402160, China
| | - Bin Luo
- Chongqing Yuxi Water Co., Ltd, Chongqing 402160, China
| | - Li Kuang
- Chongqing Gangli Environmental Protection Co., Ltd, Chongqing 404100, China
| | - Han Wang
- Key Laboratory of Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, China
| | - Qian Zhang
- Key Laboratory of Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, China
| | - Qiushi Shen
- Key Laboratory of Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, China
| | - Fangying Ji
- Key Laboratory of Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, China.
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Enhancing catalytic stability and cadaverine tolerance by whole-cell immobilization and the addition of cell protectant during cadaverine production. Appl Microbiol Biotechnol 2018; 102:7837-7847. [DOI: 10.1007/s00253-018-9190-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2018] [Revised: 06/21/2018] [Accepted: 06/23/2018] [Indexed: 11/25/2022]
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9
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Liu C, Xie J, Song M, Gao Z, Zheng D, Liu X, Ning G, Cheng X, Bruning H. Nitrogen removal performance and microbial community changes in subsurface wastewater infiltration systems (SWISs) at low temperature with different bioaugmentation strategies. BIORESOURCE TECHNOLOGY 2018; 250:603-610. [PMID: 29216573 DOI: 10.1016/j.biortech.2017.11.089] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Revised: 11/23/2017] [Accepted: 11/27/2017] [Indexed: 06/07/2023]
Abstract
Poor nitrogen removal efficiency (mainly nitrate, NO3--N) at low temperatures strongly limits application of subsurface wastewater infiltration systems (SWISs). Seven psychrophilic strains (heterotrophic nitrifying bacteria and aerobic denitrifying bacteria) were isolated and added to SWISs to investigate the effect of embedding and direct-dosing bioaugmentation strategies on sewage treatment performance at low temperature. Both bioaugmentation strategies improved ammonium (NH4+-N) removal efficiencies, and the embedding strategy also exhibited satisfactory NO3--N and total nitrogen (TN) removal efficiencies. Pyrosequencing results of the bacterial 16S rRNA gene indicated that the embedding strategy significantly decreased the indigenous soil microbial diversity (p < .05) and altered the bacterial community structure, significantly increasing the relative abundance of Clostridia, which have good nitrate-reducing activity.
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Affiliation(s)
- Chunjing Liu
- College of Resources and Environmental Science, Hebei Agricultural University, Baoding 071000, PR China; Key Laboratory for Farmland Eco-Environment of Hebei Province, 071000 Baoding, PR China
| | - Jianzhi Xie
- College of Resources and Environmental Science, Hebei Agricultural University, Baoding 071000, PR China; Key Laboratory for Farmland Eco-Environment of Hebei Province, 071000 Baoding, PR China.
| | - Manli Song
- College of Resources and Environmental Science, Hebei Agricultural University, Baoding 071000, PR China
| | - Zhiling Gao
- College of Resources and Environmental Science, Hebei Agricultural University, Baoding 071000, PR China; Key Laboratory for Farmland Eco-Environment of Hebei Province, 071000 Baoding, PR China
| | - Dongxing Zheng
- College of Resources and Environmental Science, Hebei Agricultural University, Baoding 071000, PR China
| | - Xia Liu
- College of Resources and Environmental Science, Hebei Agricultural University, Baoding 071000, PR China; Key Laboratory for Farmland Eco-Environment of Hebei Province, 071000 Baoding, PR China
| | - Guohui Ning
- College of Resources and Environmental Science, Hebei Agricultural University, Baoding 071000, PR China; Key Laboratory for Farmland Eco-Environment of Hebei Province, 071000 Baoding, PR China
| | - Xu Cheng
- Laboratory of Molecular Biology, Department of Plant Science, Wageningen University, Wageningen, The Netherlands
| | - Harry Bruning
- Sub-department of Environmental Technology, Wageningen University, Wageningen, The Netherlands
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Production of xanthan gum by free and immobilized cells of Xanthomonas campestris and Xanthomonas pelargonii. Int J Biol Macromol 2016; 82:751-6. [DOI: 10.1016/j.ijbiomac.2015.10.065] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2015] [Revised: 09/28/2015] [Accepted: 10/19/2015] [Indexed: 11/23/2022]
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Zhu N, Shi C, Shang R, Yang C, Xu Z, Wu P. Immobilization of Acidithiobacillus ferrooxidans on cotton gauze for biological oxidation of ferrous ions in a batch bioreactor. Biotechnol Appl Biochem 2015; 64:727-734. [PMID: 26621070 DOI: 10.1002/bab.1464] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2015] [Accepted: 11/21/2015] [Indexed: 01/01/2023]
Abstract
The ability of Acidithiobacillus ferrooxidans to oxidize ferrous iron has been extensively studied in bioleaching to recover metal resources. Although immobilization of A. ferrooxidans is of great importance to achieve high bioleaching performance in practical application, the reported approaches of immobilization of A. ferrooxidans are still limited. This paper is attempting to develop a novel method to immobilize A. ferrooxidans by a less-costly effective carrier from zeolite, activated carbon, and cotton gauze. The results showed that cotton gauze was the most suitable carrier to immobilize A. ferrooxidans cells in comparison with zeolite and activated carbon. Acidithiobacillus ferrooxidans immobilized on the cotton gauze by gravity dehydration could achieve an average ferrous iron oxidation rate of 0.73 g/(L·h). Furthermore, the ferrous iron oxidation ratio attained in the bioreactor under batch operation was maintained above 97.83%. All results indicated that cotton gauze could be an efficient carrier for immobilizing A. ferrooxidans cells for the biooxidation of ferrous ions.
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Affiliation(s)
- Nengwu Zhu
- School of Environment and Energy, Guangzhou Higher Education Mega Centre, South China University of Technology, Guangzhou, People's Republic of China.,The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou Higher Education Mega Centre, South China University of Technology, Guangzhou, People's Republic of China.,The Key Laboratory of Environmental Protection and Eco-Remediation of Guangdong Regular Higher Education Institutions, Guangzhou Higher Education Mega Centre, Guangzhou, People's Republic of China
| | - Chaohong Shi
- School of Environment and Energy, Guangzhou Higher Education Mega Centre, South China University of Technology, Guangzhou, People's Republic of China
| | - Ru Shang
- School of Environment and Energy, Guangzhou Higher Education Mega Centre, South China University of Technology, Guangzhou, People's Republic of China
| | - Chong Yang
- The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou Higher Education Mega Centre, South China University of Technology, Guangzhou, People's Republic of China
| | - Zhiguo Xu
- School of Environment and Energy, Guangzhou Higher Education Mega Centre, South China University of Technology, Guangzhou, People's Republic of China
| | - Pingxiao Wu
- School of Environment and Energy, Guangzhou Higher Education Mega Centre, South China University of Technology, Guangzhou, People's Republic of China.,The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou Higher Education Mega Centre, South China University of Technology, Guangzhou, People's Republic of China.,The Key Laboratory of Environmental Protection and Eco-Remediation of Guangdong Regular Higher Education Institutions, Guangzhou Higher Education Mega Centre, Guangzhou, People's Republic of China
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Xie Q, Yu L, Li Z, Liu H, Liu Z, Guo Z, Wu Z, Zhu H, Sun Y, Khan A, Li H. A novel method of dissolving realgar by immobilized Acidithiobacillus ferrooxidans. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.minpro.2015.08.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Nie H, Zhu N, Cao Y, Xu Z, Wu P. Immobilization of Acidithiobacillus ferrooxidans on Cotton Gauze for the Bioleaching of Waste Printed Circuit Boards. Appl Biochem Biotechnol 2015; 177:675-88. [PMID: 26239442 DOI: 10.1007/s12010-015-1772-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2015] [Accepted: 07/21/2015] [Indexed: 11/26/2022]
Abstract
The bioleaching parameters of metal concentrates from waste printed circuit boards by Acidithiobacillus ferrooxidans immobilized on cotton gauze in a two-step reactor were investigated in this study. The results indicated that an average ferrous iron oxidation rate of 0.54 g/(L·h) and a ferrous iron oxidation ratio of 96.90 % were obtained after 12 h at aeration rate of 1 L/min in bio-oxidation reactor. After 96 h, the highest leaching efficiency of copper reached 91.68 % under the conditions of the content of the metal powder 12 g/L, the retention time 6 h, and the aeration rate 1 L/min. The bioleaching efficiency of copper could be above 91.12 % under repeated continuous batch operation. Meanwhile, 95.32 % of zinc, 90.32 % of magnesium, 86.31 % of aluminum, and 59.07 % of nickel were extracted after 96 h. All the findings suggested that the recovery of metal concentrates from waste printed circuit boards via immobilization of A. ferrooxidans on cotton gauze was feasible.
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Affiliation(s)
- Hongyan Nie
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China
| | - Nengwu Zhu
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China.
- The Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Clusters of Ministry of Education, Guangzhou, 510006, China.
- The Key Laboratory of Environmental Protection and Eco-Remediation of Guangdong Regular Higher Education Institutions, Guangzhou, 510006, China.
| | - Yanlan Cao
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China
| | - Zhiguo Xu
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China
| | - Pingxiao Wu
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China
- The Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Clusters of Ministry of Education, Guangzhou, 510006, China
- The Key Laboratory of Environmental Protection and Eco-Remediation of Guangdong Regular Higher Education Institutions, Guangzhou, 510006, China
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Vosoughi A, Yazdian F, Amoabediny G, Hakim M. Investigating the effect of design parameters on the response time of a highly sensitive microbial hydrogen sulfide biosensor based on oxygen consumption. Biosens Bioelectron 2015; 70:106-14. [DOI: 10.1016/j.bios.2015.03.025] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2015] [Revised: 03/09/2015] [Accepted: 03/10/2015] [Indexed: 10/23/2022]
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16
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Hou Q, Fang D, Liang J, Zhou L. Significance of oxygen supply in jarosite biosynthesis promoted by Acidithiobacillus ferrooxidans. PLoS One 2015; 10:e0120966. [PMID: 25807372 PMCID: PMC4373806 DOI: 10.1371/journal.pone.0120966] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2014] [Accepted: 01/27/2015] [Indexed: 11/28/2022] Open
Abstract
Jarosite [(Na+, K+, NH4+, H3O+)Fe3(SO4)2(OH)6] is an efficient scavenger for trace metals in Fe- and SO42--rich acidic water. During the biosynthesis of jarosite promoted by Acidithiobacillus ferrooxidans, the continuous supply of high oxygen levels is a common practice that results in high costs. To evaluate the function of oxygen in jarosite production by A. ferrooxidans, three groups of batch experiments with different oxygen supply levels (i.e., loading volume percentages of FeSO4 solution of 20%, 40%, and 70% v/v in the flasks), as well as three groups of sealed flask experiments with different limiting oxygen supply conditions (i.e., the solutions were not sealed at the initial stage of the ferrous oxidation reaction by paraffin but were rather sealed at the end of the ferrous oxidation reaction at 48 h), were tested. The formed Fe-precipitates were characterized via X-ray powder diffraction and scanning electron microscope-energy dispersive spectral analysis. The results showed that the biosynthesis of jarosite by A. ferrooxidans LX5 could be achieved at a wide range of solution loading volume percentages. The rate and efficiency of the jarosite biosynthesis were poorly correlated with the concentration of dissolved oxygen in the reaction solution. Similar jarosite precipitates, expressed as KFe3 (SO4) 2(OH)6 with Fe/S molar ratios between 1.61 and 1.68, were uniformly formed in unsealed and 48 h sealed flasks. These experimental results suggested that the supply of O2 was only essential in the period of the oxidation of ferrous iron to ferric but was not required in the period of ferric precipitation.
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Affiliation(s)
- Qingjie Hou
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Di Fang
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Jianru Liang
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Lixiang Zhou
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, China
- * E-mail:
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Li L, Cai D, Wang C, Han J, Ren W, Zheng J, Wang Z, Tan T. Continuous l-lactic acid production from defatted rice bran hydrolysate using corn stover bagasse immobilized carrier. RSC Adv 2015. [DOI: 10.1039/c4ra04641b] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
In this paper, l-lactic acid (LLA) was produced using defatted rice bran hydrolysate.
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Affiliation(s)
- Lun Li
- Beijing Key Lab of Bioprocess
- College of Life Science and Technology
- Beijing University of Chemical Technology
- Beijing 100029
- PR China
| | - Di Cai
- Beijing Key Lab of Bioprocess
- College of Life Science and Technology
- Beijing University of Chemical Technology
- Beijing 100029
- PR China
| | - Chengyu Wang
- Beijing Key Lab of Bioprocess
- College of Life Science and Technology
- Beijing University of Chemical Technology
- Beijing 100029
- PR China
| | - Juntian Han
- Beijing Key Lab of Bioprocess
- College of Life Science and Technology
- Beijing University of Chemical Technology
- Beijing 100029
- PR China
| | - Wenqiang Ren
- Beijing Key Lab of Bioprocess
- College of Life Science and Technology
- Beijing University of Chemical Technology
- Beijing 100029
- PR China
| | - Jia Zheng
- Beijing Key Lab of Bioprocess
- College of Life Science and Technology
- Beijing University of Chemical Technology
- Beijing 100029
- PR China
| | - Zheng Wang
- Beijing Key Lab of Bioprocess
- College of Life Science and Technology
- Beijing University of Chemical Technology
- Beijing 100029
- PR China
| | - Tianwei Tan
- Beijing Key Lab of Bioprocess
- College of Life Science and Technology
- Beijing University of Chemical Technology
- Beijing 100029
- PR China
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18
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Qiao S, Duan X, Zhou J, Cheng Y, Bhatti Z. Enhanced efficacy of nitrifying biomass by modified PVA_SB entrapment technique. World J Microbiol Biotechnol 2014; 30:1985-92. [DOI: 10.1007/s11274-014-1621-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2013] [Accepted: 02/06/2014] [Indexed: 10/25/2022]
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19
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Efficient production of l-sorbose from d-sorbitol by whole cell immobilization of Gluconobacter oxydans WSH-003. Biochem Eng J 2013. [DOI: 10.1016/j.bej.2013.06.008] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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20
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Wang HL, Zuo Y, Zhang L, Yang WH, Zou Q, Zhou S, Li YB. Preparation and characterisation of nanohydroxyapatite–sodium alginate–polyvinyl alcohol composite scaffold. ACTA ACUST UNITED AC 2013. [DOI: 10.1179/143307510x12820854748836] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Affiliation(s)
- H. L. Wang
- The Research Center for Nano-BiomaterialsAnalytical and Testing Center, Sichuan University, Chengdu 610064 , China , School of Pharmacy, Chengdu Medical College, Chengdu 610083 , China
| | - Y. Zuo
- The Research Center for Nano-BiomaterialsAnalytical and Testing Center, Sichuan University, Chengdu 610064 , China
| | - L. Zhang
- The Research Center for Nano-BiomaterialsAnalytical and Testing Center, Sichuan University, Chengdu 610064 , China
| | - W. H. Yang
- The Research Center for Nano-BiomaterialsAnalytical and Testing Center, Sichuan University, Chengdu 610064 , China
| | - Q. Zou
- The Research Center for Nano-BiomaterialsAnalytical and Testing Center, Sichuan University, Chengdu 610064 , China
| | - S. Zhou
- The Research Center for Nano-BiomaterialsAnalytical and Testing Center, Sichuan University, Chengdu 610064 , China
| | - Y. B. Li
- The Research Center for Nano-BiomaterialsAnalytical and Testing Center, Sichuan University, Chengdu 610064 , China ;,
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21
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Wang Y, Yang Y, Li D, Hu H, Li H, He X. Bioxidative dissolution of cinnabar by iron-oxidizing bacteria. Biochem Eng J 2013. [DOI: 10.1016/j.bej.2013.02.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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22
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Wang YJ, Li HY, Hu HF, Li DP, Yang YJ, Liu C. Using biochemical system to improve cinnabar dissolution. BIORESOURCE TECHNOLOGY 2013; 132:1-4. [PMID: 23384822 DOI: 10.1016/j.biortech.2013.01.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2012] [Revised: 12/31/2012] [Accepted: 01/04/2013] [Indexed: 06/01/2023]
Abstract
In order to evaluate the leaching of cinnabar, a chemobiological reactor system with Acidithiobacillus ferrooxidans for cinnabar dissolution was investigated. The results demonstrated cinnabar dissolution had relation to bioprocess of A. ferrooxidans and iron concentration tightly. The optimal dilution rate and iron concentration were 0.4/h and 2-3 g/L in chemobiological reactor. The process may be contributed to the indirect catalyzing of ferric iron generated with A. ferrooxidans and direct adherence oxidation function. This research shows the new microbiological technique may be a feasible and economical method in application.
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Affiliation(s)
- Y J Wang
- Key Laboratory of Environmental and Applied Microbiology, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, PR China.
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23
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Abstract
Microbial whole cells are efficient, ecological, and low-cost catalysts that have been successfully applied in the pharmaceutical, environmental, and alimentary industries, among others. Microorganism immobilization is a good way to carry out the bioprocess under preparative conditions. The main advantages of this methodology lie in their high operational stability, easy upstream separation and bioprocess scale-up feasibility. Cell entrapment is the most widely used technique for whole cell immobilization. This technique-in which the cells are included within a rigid network-is porous enough to allow the diffusion of substrates and products, protects the selected microorganism from the reaction medium, and has high immobilization efficiency (100 % in most cases).
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Affiliation(s)
- Jorge A Trelles
- Laboratorio de Investigaciones en Biotecnología Sustentable, Universidad Nacional de Quilmes, Bernal, Argentina
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24
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İnal M, Yiğitoğlu M. Improvement of bioethanol productivity of immobilized Saccharomyces bayanus with using sodium alginate-graft-poly(N-vinyl-2-pyrrolidone) matrix. Appl Biochem Biotechnol 2012; 168:266-78. [PMID: 22717770 DOI: 10.1007/s12010-012-9770-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2012] [Accepted: 06/05/2012] [Indexed: 11/26/2022]
Abstract
In this study, immobilization conditions and bioethanol production characteristics of immobilized Saccharomyces bayanus were investigated into sodium alginate-graft-poly(N-vinyl-2-pyrrolidone; NaAlg-g-PVP) matrix. The matrix that crosslinked with calcium clorid was used for immobilization of S. bayanus. Bioethanol productivity of the NaAlg-g-PVP matrix was found to increase from 4.21 to 4.84 gL(-1) h(-1) when compared with the convential sodium alginate matrix. The production of bioethanol was affected by initial glucose concentration and percentage of immobilized cell beads in fermentation medium. Bioethanol productivity was increased from 3.62 to 4.84 gL(-1) h(-1) while the glucose concentration increasing from 50 to 100 gL(-1). Due to the increase in percentage from 10 to 20 % of immobilized cell beads in the fermentation medium, bioethanol productivity was increased from 4.84 to 8.68 gL(-1) h(-1). The cell immobilized NaAlg-g-PVP beads were protected 92 % of initial activity after six repeated fermentation.
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Affiliation(s)
- Murat İnal
- Science and Art Faculty, Department of Chemistry, Kirikkale University, Yahşihan 71450 Kirikkale, Turkey.
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25
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Takei T, Ikeda K, Ijima H, Yoshida M, Kawakami K. A comparison of sodium sulfate, sodium phosphate, and boric acid for preparation of immobilized Pseudomonas putida F1 in poly(vinyl alcohol) beads. Polym Bull (Berl) 2012. [DOI: 10.1007/s00289-012-0756-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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26
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Encapsulation of the peptide Ac–Glu–Thr–Lys–Thr–Tyr–Phe–Trp–Lys–NH2 into polyvinyl alcohol biodegradable formulations—Effect of calcium alginate. Carbohydr Polym 2012. [DOI: 10.1016/j.carbpol.2011.08.064] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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27
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Zain NAM, Suhaimi MS, Idris A. Development and modification of PVA–alginate as a suitable immobilization matrix. Process Biochem 2011. [DOI: 10.1016/j.procbio.2011.08.010] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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28
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Wu HX, Wang TJ, Chen L, Jin Y, Zhang Y, Dou XM. Granulation of Fe–Al–Ce hydroxide nano-adsorbent by immobilization in porous polyvinyl alcohol for fluoride removal in drinking water. POWDER TECHNOL 2011. [DOI: 10.1016/j.powtec.2011.02.013] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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29
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Quan LM, Khanh DP, Hira D, Fujii T, Furukawa K. Reject water treatment by improvement of whole cell anammox entrapment using polyvinyl alcohol/alginate gel. Biodegradation 2011; 22:1155-67. [DOI: 10.1007/s10532-011-9471-3] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2010] [Accepted: 03/21/2011] [Indexed: 11/30/2022]
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30
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Prabhu C, Wanjari S, Gawande S, Das S, Labhsetwar N, Kotwal S, Puri AK, Satyanarayana T, Rayalu S. Immobilization of carbonic anhydrase enriched microorganism on biopolymer based materials. ACTA ACUST UNITED AC 2009. [DOI: 10.1016/j.molcatb.2009.02.022] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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31
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Gummadi SN, Ganesh K, Santhosh D. Enhanced degradation of caffeine by immobilized cells of Pseudomonas sp. in agar–agar matrix using statistical approach. Biochem Eng J 2009. [DOI: 10.1016/j.bej.2008.11.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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32
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Zhang Z, Lei Z, He X, Zhang Z, Yang Y, Sugiura N. Nitrate removal by Thiobacillus denitrificans immobilized on poly(vinyl alcohol) carriers. JOURNAL OF HAZARDOUS MATERIALS 2009; 163:1090-1095. [PMID: 18723283 DOI: 10.1016/j.jhazmat.2008.07.062] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2008] [Revised: 07/01/2008] [Accepted: 07/16/2008] [Indexed: 05/26/2023]
Abstract
Nitrate contamination is becoming a widespread environmental problem, and autotrophic denitrification with Thiobacillus denitrificans is a promising process considering efficiency, cost and maintenance. The denitrification efficiencies of T. denitrificans were compared in batch reactors between free cells and cells immobilized on polyvinyl alcohol (PVA) carriers made with thrice freezing/thawing and boric acid methods. The results indicated that the free cell reactor of T. denitrificans added with 10% (v/v) of PVA carrier made by thrice freezing/thawing (PVA-TFT) exhibited faster in S(2)O(3)(2-)-S consumption, SO(4)(2-) generation, and NO(3)(-)-N denitrification, with corresponding values being 165 mg (S(2)O(3)(2-)-S)/L.d, 491 mg (SO(4)(2-))/Ld, and 44 mg (NO(3)(-)-N)/Ld, which were increased by 50%, 61%, and 57% respectively compared to the control reactor with only free cells. Inhibition of denitrification by accumulated SO(4)(2-) in PVA-TFT reactor appeared at the concentration of approximately 6000 mg (SO(4)(2-))/L, and 75% of NO(3)(-)-N removal efficiency was achieved after 12d operation under the condition of initial 700 mg/L NO(3)(-)-N concentration.
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Affiliation(s)
- Zhenya Zhang
- Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba 305-8572, Japan
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33
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Jao WC, Chen HC, Lin CH, Yang MC. The controlled release behavior and pH- and thermo-sensitivity of alginate/poly(vinyl alcohol) blended hydrogels. POLYM ADVAN TECHNOL 2008. [DOI: 10.1002/pat.1318] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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34
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Idris A, Zain NAM, Suhaimi MS. Immobilization of Baker's yeast invertase in PVA–alginate matrix using innovative immobilization technique. Process Biochem 2008. [DOI: 10.1016/j.procbio.2007.12.008] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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35
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Biological ferrous sulfate oxidation by A. ferrooxidans immobilized on chitosan beads. J Microbiol Methods 2008; 72:227-34. [DOI: 10.1016/j.mimet.2008.01.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2007] [Revised: 12/28/2007] [Accepted: 01/03/2008] [Indexed: 11/15/2022]
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36
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Effect of Cell-to-matrix Ratio in Polyvinyl Alcohol Immobilized Pure and Mixed Cultures on Atrazine Degradation. ACTA ACUST UNITED AC 2007. [DOI: 10.1007/s11267-007-9158-2] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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