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Total 19290 results found since Jan 2013.
Bioethanol production from Chlorella vulgaris ESP-31 grown in unsterilized swine wastewater
Bioresour Technol. 2022 Mar 29:127086. doi: 10.1016/j.biortech.2022.127086. Online ahead of print.ABSTRACTThe potential of microalgae to remove nutrients from swine wastewater and accumulate carbohydrates was examined. Chlorella sorokiniana AK-1 and Chlorella vulgaris ESP-31 were grown in 10% unsterilized swine wastewater and obtained a maximum carbohydrate content and productivity of 42.5% and 189 mg L-1d-1, respectively. At 25% wastewater and 25% BG-11 concentration, the maximum carbohydrate productivity and total nitrogen removal efficiency of C. vulgaris ESP-31 were improved to 266 mg L-1d-1 and 54.2%, respectively. Fu...
Source: Bioresource Technology - April 1, 2022 Category: Biotechnology Authors: Paula Isabel G Acebu Mark Daniel G de Luna Chun-Yen Chen Ralf Ruffel M Abarca Jih-Heng Chen Jo-Shu Chang Source Type: research
Optimizing real swine wastewater treatment with maximum carbohydrate production by a newly isolated indigenous microalga Parachlorella kessleri QWY28.
In this study, a newly discovered microalga Parachlorella kessleri QWY28 with a superior ability to treat real swine wastewater, was isolated and explored. The optimal culture conditions of 30 °C and 600 μmol/m2·s were set to improve the practical application potential, achieving maximum pollutant removal efficiencies of 88% COD, 95% TN and almost 100% TP, with carbohydrate production at 646 mg/L·d. These results present the highest efficiencies reported to date, for non-sterilized real swine wastewater without pretreatment. These findings support the practical feasibility of combined microalgal swine wastewater ...
Source: Bioresource Technology - June 25, 2019 Category: Biotechnology Authors: Qu W, Zhang C, Zhang Y, Ho SH Tags: Bioresour Technol Source Type: research
Efficiency and mechanism of a vermicompost additive in enhancing composting of swine manure
Environ Sci Pollut Res Int. 2021 Jul 28. doi: 10.1007/s11356-021-14498-x. Online ahead of print.ABSTRACTVermicompost was used as an additive in swine manure composting to investigate the expression of bacterial functional genes on nutrients biotransformation. Three treatments with vermicompost compositions of 10%, 20%, and 30% in swine manure were set up. Raw manure was used as the control. The thermophilic period increased to 12 days, the NH4+ -N/NO3- -N ratio decreased to 0.85, and the germination index (GI) increased to 166% after vermicompost addition. Furthermore, higher relative abundances of Firmicutes were observed...
Source: Environmental Science and Pollution Research International - July 29, 2021 Category: Environmental Health Authors: Xiaoxia Hao Xinyuan Ma Bo Zeng Li Zhu Linyuan Shen Mingxian Yang Hongwen Hu Dongmei Jiang Lin Bai Source Type: research
Removal of veterinary antibiotics in swine wastewater using microalgae-based process
Environ Res. 2021 Oct 8:112192. doi: 10.1016/j.envres.2021.112192. Online ahead of print.ABSTRACTPhycoremediation of swine wastewater is an attractive treatment to remove contaminants and simultaneously produce valuable feedstock biomass. However, there is a lack of information about the application of phycoremediation on veterinary antibiotic removal. Thus, this research investigated the degradation of tetracycline, oxytetracycline, chlortetracycline and doxycycline in swine wastewater treated with phycoremediation. The tetracyclines degradation kinetics was adjusted to the pseudo-first-order kinetics model, with kinetic ...
Source: Environmental Research - October 11, 2021 Category: Environmental Health Authors: William Michelon Alexandre Matthiensen Aline Viancelli Gislaine Fongaro Vanessa Gressler Hugo Moreira Soares Source Type: research
Insights into the microalgae-bacteria consortia treating swine wastewater: symbiotic mechanism and resistance genes analysis
This study investigated the effects of microalgae-bacteria consortia (MBC) (Chlorella pyrenoidosa-activated sludge (AS)) treating swine wastewater with low C/N ratios. After co-culture, the removal rates of NH4+-N and PO43--P increased by 53.84% and 43.52%. Furthermore, the sulfamethoxazole (SMX) degradation rates in MBC were slightly higher than in the activated sludge process. Interestingly, the absolute abundance of antibiotic resistance genes (ARGs) in effluent from MBC is relatively less than in the AS process. C. pyrenoidosa has a negative zeta potential that allows bacteria to adhere to its surface. The concentratio...
Source: Bioresource Technology - February 26, 2022 Category: Biotechnology Authors: Shengnan Li Yuhao Chu Peng Xie Youping Xie Haixing Chang Shih-Hsin Ho Source Type: research
Insights into the microalgae-bacteria consortia treating swine wastewater: Symbiotic mechanism and resistance genes analysis
This study investigated the effects of microalgae-bacteria consortia (MBC) (Chlorella pyrenoidosa-activated sludge (AS)) treating swine wastewater with low C/N ratios. After co-culture, the removal rates of NH4+-N and PO43--P increased by 53.84% and 43.52%. Furthermore, the sulfamethoxazole (SMX) degradation rates in MBC were slightly higher than in the activated sludge process. Interestingly, the absolute abundance of antibiotic resistance genes (ARGs) in effluent from MBC is relatively less than in the AS process. C. pyrenoidosa has a negative zeta potential that allows bacteria to adhere to its surface. The concentratio...
Source: Bioresource Technology - February 26, 2022 Category: Biotechnology Authors: Shengnan Li Yuhao Chu Peng Xie Youping Xie Haixing Chang Shih-Hsin Ho Source Type: research
Enhanced sludge reduction during swine wastewater treatment by the dominant sludge-degrading strains Chryseobacterium sp. B4 and Serratia sp. H1
This study provides new insights into sludge reduction during wastewater treatment with dominant sludge-degrading strains.PMID:33761451 | DOI:10.1016/j.biortech.2021.124983
Source: Bioresource Technology - March 24, 2021 Category: Biotechnology Authors: Na Wang Xiaomiao Chen Yuji Ji Weizhi Yan Chunmeng Chui Li Liu Jiping Shi Source Type: research
Microbial inoculants and struvite improved organic matter humification and stabilized phosphorus during swine manure composting: multivariate and multiscale investigations
Bioresour Technol. 2022 Mar 9:126976. doi: 10.1016/j.biortech.2022.126976. Online ahead of print.ABSTRACTThe combined effects of microbial inoculants (MI) and magnesium ammonium phosphate (MAP; struvite) on organic matter (OM) biodegradation and nutrients stabilization during biowaste composting have not yet been investigated. Therefore, the effects of MI and MAP on OM stability and P species during swine manure composting were investigated using geochemical and spectroscopic techniques. MI promoted the degradation of carbohydrates and aliphatic compounds, which improved the degree of OM mineralization and humification. MI...
Source: Bioresource Technology - March 12, 2022 Category: Biotechnology Authors: Huanhuan Li Tao Zhang Sabry M Shaheen Hamada Abdelrahman Esmat F Ali Nanthi S Bolan Guoxue Li J örg Rinklebe Source Type: research
Effects of 3D-printed bulking agent on microbial community succession and carbohydrate-active enzymes genes during swine manure composting
Chemosphere. 2022 Jun 28:135513. doi: 10.1016/j.chemosphere.2022.135513. Online ahead of print.ABSTRACTThe bulking agent plays an important role in aerobic composting, but their shape, porosity, and homogeneity need to be optimized. In the present work, a bulking agent with a uniform shape was prepared by 3D printing to explore its influence on physicochemical parameters, microbial community succession, and gene abundance of carbohydrate-active enzymes (CAZymes) in swine manure aerobic composting. The results showed that adding 3D-printed bulking agents can increase maximum temperature, prolong the thermophilic period, and...
Source: Chemosphere - July 1, 2022 Category: Chemistry Authors: Shuangshuang Ma Hongtao Liu Source Type: research
