Unveiling activation mechanism of persulfate by homologous hemp-derived biochar catalysts for enhanced tetracycline wastewater remediation
This study provides a technical reference and theoretical foundation for enhancing biochar activation of PS in the removal of organic pollutants from aquatic and terrestrial environments.PMID:38614146 | DOI:10.1016/j.biortech.2024.130684 (Source: Bioresource Technology)
Source: Bioresource Technology - April 13, 2024 Category: Biotechnology Authors: Chengyang Tang Chuanyi Xu Guoyu Zhong Zhan Cen Zhuobiao Ni Zuofang Yao Yueping Fang Rongliang Qiu Shengsen Zhang Source Type: research
Potential mechanisms of propionate degradation and methanogenesis in anaerobic digestion coupled with microbial electrolysis cell system: Importance of biocathode
In this study, microbiological and metabolic pathways in the biocathode of anaerobic digestion coupled with microbial electrolysis cells system (AD-MEC) were revealed to separate bioanode. The biocathode efficiently degraded 90 % propionate within 48 h, leading to a methane production rate of 3222 mL·m-2·d-1. The protein and heme-rich cathodic biofilm enhanced redox capacity and facilitated interspecies electron transfer. Key acid-degrading bacteria, including Dechloromonas agitata, Ignavibacteriales bacterium UTCHB2, and Syntrophobacter fumaroxidans, along with functional proteins such as cytochrome c and e-pili, establ...
Source: Bioresource Technology - April 13, 2024 Category: Biotechnology Authors: Meng Guo Sijia Wei MeiXin Guo Mingxiao Li Xuejiao Qi Yong Wang Xuan Jia Source Type: research
Modeling and optimization of biomass productivity of Chlorella vulgaris using response surface Methodology, analysis of variance and Machine learning for carbon dioxide capture
This study explores bioremediation's effectiveness in reducing carbon emissions through the use of microalgae Chlorella vulgaris, known for capturing carbon dioxide and producing biomass. The impact of temperature and light intensity on productivity and carbon dioxide capture was investigated, and cultivation conditions were optimized in a photobioreactor using response surface methodology (RSM), analysis of variance (ANOVA), and deep neural networks (DNN). The optimal conditions determined were 28.74 °C and 225 μmol/m2/s with RSM, and 29.55 °C and 226.77 μmol/m2/s with DNN, closely aligning with literature values (29 ...
Source: Bioresource Technology - April 13, 2024 Category: Biotechnology Authors: Mehmood Yaqoob Janjua Azaam Azfar Zaheer Asghar Khurrum Shehzad Source Type: research
Continuous valorization of food waste and oily food waste using bacteria-pumice and bacteria-smectite nanocomposites: Alternative cell immobilization and zooplankton lifespan impact
This study presents alternative cell immobilization methods for valorizing food waste (FW) and oily food waste (OFW) to microbial carotenoids and proteins. Carriers (pumice or smectite), magnetite nanoparticles, and isolated photosynthetic bacteria were integrated to obtain magnetically recoverable bacteria-pumice and bacteria-smectite nanocomposites. After recycling five batches (50 d), chemical oxygen demand removal from FW reached 76% and 78% with the bacteria-pumice and bacteria-smectite nanocomposite treatments, respectively, and oil degradation in OFW reached 71% and 62%, respectively. Destructive changes did not occ...
Source: Bioresource Technology - April 13, 2024 Category: Biotechnology Authors: Anuwat Chaiyarat Chewapat Saejung Source Type: research
Degradation and enhanced oil recovery potential of Alcanivorax borkumensis through production of bio-enzyme and bio-surfactant
This study offers novel insights for the development of environmentally friendly and efficient oil fields.PMID:38614150 | DOI:10.1016/j.biortech.2024.130690 (Source: Bioresource Technology)
Source: Bioresource Technology - April 13, 2024 Category: Biotechnology Authors: Shuyuan Deng Bo Wang Hong Zhang Ruixue Qu Shanshan Sun Qing You Yuehui She Fan Zhang Source Type: research
Impact of bioelectricity on DNRA process and microbial community composition within cathodic biofilms in dual-chambered bioelectrode microbial fuel cell (MFC)
In conclusion, the integration of a DNRA strain with MFC facilitated the efficient removal of wastewater containing high concentrations of NO3- and enabled the environmentally friendly recovery of NH4+.PMID:38608785 | DOI:10.1016/j.biortech.2024.130693 (Source: Bioresource Technology)
Source: Bioresource Technology - April 12, 2024 Category: Biotechnology Authors: Luhan Cai Yubiao Lu Haiguang Zhu Binxin Liu Xinyi Li Tianbo Jia Jianxin Wang Xueting Wang Peng Li Source Type: research
Screw reactor design for potato peel pretreatment using the steam explosion
Bioresour Technol. 2024 Apr 10:130675. doi: 10.1016/j.biortech.2024.130675. Online ahead of print.ABSTRACTIn this article we can observe the scanning by the literature for the pretreatment of steam explosion applied to lignocellulose biomass. A comparison of the chemical and physical characterization of potato peel as a lignocellulose biomass. Besides, the innovative design of a continuous reactor for the potato peel steam explosion process is shown, with specific temperature and pressure conditions on a pilot scale, detailing its parts. Finally, a finite element analysis was performed where stress results were obtained fr...
Source: Bioresource Technology - April 12, 2024 Category: Biotechnology Authors: Paula A Ramirez-Cabrera Juan J Lozada-Castro Carlos A Guerrero-Fajardo Source Type: research
Low-voltage stimulated denitrification performance of high-salinity wastewater using halotolerant microorganisms
In this study, an innovative approach using an electrostimulating microbial reactor (EMR) was explored to address this challenge. With a low-voltage input of 1.2 V, the EMR reached nitrate removal kinetic parameter (kNO3-N) of 0.0166-0.0808 h-1 under high-salinities (1.5 %-6.5 %), which was higher than that of the microbial reactor (MR) (0.0125-0.0478 h-1). The mechanisms analysis revealed that low-voltage significantly enhanced microbial salt-in strategy and promoted the secretion of extracellular polymeric substances. Halotolerant denitrification microorganisms (Pseudomonas and Nitratireductor) were also enriched in EMR....
Source: Bioresource Technology - April 11, 2024 Category: Biotechnology Authors: Long Chen Hai Xiang Li-Ting Zhou Yan-Qing Zhang Yang-Cheng Ding Di Wu Nan-Wen Zhu Yi-Feng Zhang Hua-Jun Feng Source Type: research
Low-voltage stimulated denitrification performance of high-salinity wastewater using halotolerant microorganisms
In this study, an innovative approach using an electrostimulating microbial reactor (EMR) was explored to address this challenge. With a low-voltage input of 1.2 V, the EMR reached nitrate removal kinetic parameter (kNO3-N) of 0.0166-0.0808 h-1 under high-salinities (1.5 %-6.5 %), which was higher than that of the microbial reactor (MR) (0.0125-0.0478 h-1). The mechanisms analysis revealed that low-voltage significantly enhanced microbial salt-in strategy and promoted the secretion of extracellular polymeric substances. Halotolerant denitrification microorganisms (Pseudomonas and Nitratireductor) were also enriched in EMR....
Source: Bioresource Technology - April 11, 2024 Category: Biotechnology Authors: Long Chen Hai Xiang Li-Ting Zhou Yan-Qing Zhang Yang-Cheng Ding Di Wu Nan-Wen Zhu Yi-Feng Zhang Hua-Jun Feng Source Type: research
L-tryptophan anaerobic fermentation for indole acetic acid production: Bacterial enrichment and effects of zero valent iron
Bioresour Technol. 2024 Apr 8:130691. doi: 10.1016/j.biortech.2024.130691. Online ahead of print.ABSTRACTIndole acetic acid (IAA) as a plant hormone, was one of the valuable products of anaerobic fermentation. However, the enriching method remained unknown. Moreover, whether zero-valent iron (ZVI) could enhance IAA production was unexplored. In this work, IAA producing bacteria Klebsiella (63 %) was enriched successfully. IAA average production rate and concentration were up to 3 mg/L/h and 56 mg/L. With addition of 1 g/L ZVI, IAA average production rate and concentration was increased for 2 and 3 folds. Mechanisms indicat...
Source: Bioresource Technology - April 10, 2024 Category: Biotechnology Authors: Meng-Yao Ma Li-Li Hu Wen-Yan Xu Wei Zhang Source Type: research
Allophane improves anaerobic digestion of chicken manure by alleviating ammonia inhibition and intensifying direct interspecies electron transfer
Bioresour Technol. 2024 Apr 8:130692. doi: 10.1016/j.biortech.2024.130692. Online ahead of print.ABSTRACTSynthesized allophane was employed in anaerobic digestion of chicken manure to improve the stability and methane production under ammonia inhibition. Adding 0.5 %, 1.0 % and 1.5 % (w/w) allophane increased the methane production by 261 ∼ 350 % compared with the group without allophane addition. Further investigation indicated that the maximum adsorption capacity of allophane for NH4+-N achieved at 261.9 mg/g; it suggested that allophane adsorption potentially alleviated the ammonia inhibition, which also was reflected...
Source: Bioresource Technology - April 10, 2024 Category: Biotechnology Authors: Yukun Liu Lanxing Ying Hui Li Mukesh Kumar Awasthi Dong Tian Jinsong He Jianmei Zou Yongjia Lei Fei Shen Source Type: research
Random mutagenesis and transcriptomics-guided rational engineering in Zygosaccharomyces rouxii for elevating D-arabitol biosynthesis
This study aimed to enhance the performance of Zygosaccharomyces rouxii to improve D-arabitol production. Firstly, a mutant strain Z. rouxii M075 obtained via atmospheric and room temperature plasma-mediated mutagenesis yielded 42.0 g/L of D-arabitol at 96 h, with about 50 % increase. Transcriptome-guided metabolic engineering of pathway key enzymes co-expression produced strain ZR-M3, reaching 48.9 g/L D-arabitol after 96 h fermentation. Finally, under optimized conditions, fed-batch fermentation of ZR-M3 in a 5 L bioreactor yielded an impressive D-arabitol titer of 152.8 g/L at 192 h, with a productivity of 0.8 g/L/h. Th...
Source: Bioresource Technology - April 10, 2024 Category: Biotechnology Authors: Guoyan Zhang Hossain M Zabed Yufei Zhang Jia Li Junhua Yun Xianghui Qi Source Type: research
Effects of two strains of thermophilic nitrogen-fixing bacteria on nitrogen loss mitigation in cow dung compost
In this study, two strains of thermophilic nitrogen-fixing bacteria, NF1 (Bacillus subtilis) and NF2 (Azotobacter chroococcum), were added to cow dung compost both individually (NF1, NF2) and mixed together (NF3; mixing NF1 and NF2 at a ratio of 1:1). The results showed that NF1, NF2, and NF3 inoculants increased the total Kjeldahl nitrogen level by 38.43%-55.35%, prolonged the thermophilic period by 1-13 d, increased the seed germination index by 17.81%, and the emissions of NH3 and N2O were reduced by 25.11% and 42.75%, respectively. Microbial analysis showed that Firmicutes were the predominant bacteria at the thermophi...
Source: Bioresource Technology - April 10, 2024 Category: Biotechnology Authors: Shaowen Wang Zhiming Xu Xuerui Xu Feng Gao Kang Zhang Xin Zhang Xiu Zhang Guoping Yang Zengqiang Zhang Ronghua Li Fusheng Quan Source Type: research
Magnetic nanoparticle-mediated enrichment technology combined with microfluidic single cell separation technology: A technology for efficient separation and degradation of functional bacteria in single cell liquid phase
In this study, an integrated technology of Magnetic Nanoparticle-mediated Enrichment (MME) and Microfluidic Single Cell separation (MSC) that breaks through the bottleneck of traditional separation and cultivation techniques and can efficiently obtain more in situ functional microorganisms from the environment was developed. MME technology was first used to enrich rapidly growing active bacteria in the environment. Subsequently, MSC technology was applied to isolate and incubate functional bacterial communities in situ and validate the degradation ability of individual bacteria. As a result, this study has changed the orde...
Source: Bioresource Technology - April 10, 2024 Category: Biotechnology Authors: Yuanyan Xuan Meng Yin Yujiao Sun Meijun Liu Guomin Bai Zhidian Diao Bo Ma Source Type: research
Biogas upgrading performance and underlying mechanism in microbial electrolysis cell and anaerobic digestion integrated system
Bioresour Technol. 2024 Apr 8;400:130683. doi: 10.1016/j.biortech.2024.130683. Online ahead of print.ABSTRACTThe productivity and efficiency of two-chamber microbial electrolysis cell and anaerobic digestion integrated system (MEC-AD) were promoted by a complex of anaerobic granular sludge and iron oxides (Fe-AnGS) as inoculum. Results showed that MEC-AD with Fe-AnGS achieved biogas upgrading with a 23%-29% increase in the energy recovery rate of external circuit current and a 26%-31% decrease in volatile fatty acids. The energy recovery rate of MEC-AD remained at 52%-57%, indicating a stable operation performance. The sel...
Source: Bioresource Technology - April 10, 2024 Category: Biotechnology Authors: Yufang Wei Wangmi Chen Jiaqi Hou Xuejiao Qi Meiying Ye Ning Jiang Fanhua Meng Beidou Xi Mingxiao Li Source Type: research
