Elevated caproic acid production from one-stage anaerobic fermentation of organic waste and its selective recovery by electro-membrane process
Bioresour Technol. 2024 Mar 30:130647. doi: 10.1016/j.biortech.2024.130647. Online ahead of print.ABSTRACTA constructed microbial consortia-based strategy to enhance caproic acid production from one-stage mixed-fermentation of glucose was developed, which incubated with acidogens (Clostridium sensu stricto 1, 11 dominated) and chain elongators (including Clostridium sensu stricto 12, Sporanaerobacter, and Caproiciproducens) acclimated from anaerobic sludge. Significant product upgrading toward caproic acid (8.31 g‧L-1) and improved substrate degradation was achieved, which can be greatly attributed to the lactic acid pla...
Source: Bioresource Technology - April 1, 2024 Category: Biotechnology Authors: Wenyan Zhao Heqing Jiang Wenjian Dong Qiaochu Liang Binghua Yan Yang Zhang Source Type: research
Strain engineering of Bacillus coagulans with high osmotic pressure tolerance for effective L-lactic acid production from sweet sorghum juice under unsterile conditions
Bioresour Technol. 2024 Mar 30:130648. doi: 10.1016/j.biortech.2024.130648. Online ahead of print.ABSTRACTOpen unsterile fermentation of the low-cost non-food crop, sweet sorghum, is an economically feasible lactic acid biosynthesis process. However, hyperosmotic stress inhibits microbial metabolism and lactic acid biosynthesis, and engineering strains with high osmotic tolerance is challenging. Herein, heavy ion mutagenesis combined with osmotic pressure enrichment was used to engineer a hyperosmotic-tolerant Bacillus coagulans for L-lactic acid production. The engineered strain had higher osmotic pressure tolerance, when...
Source: Bioresource Technology - April 1, 2024 Category: Biotechnology Authors: Yongli Yan Wenwen Shan Chong Zhang Yufan Wu Xinhui Xing Jihong Chen Wei Hu Source Type: research
Efficient synthesis of rare sugars from galactose in hot compressed water using eggshells as an environmentally friendly catalyst
Bioresour Technol. 2024 Mar 30;399:130642. doi: 10.1016/j.biortech.2024.130642. Online ahead of print.ABSTRACTAqueous galactose solutions containing eggshell was heated at 120 °C to produce calcium supplements containing rare sugars. Galactose was isomerized to rare sugars with improving rare sugar yields compared to those without eggshell. Organic acids were also formed as byproducts during the reaction. These acids were neutralized by dissolving eggshells with increasing the calcium ion concentration in the solution. When eggshell components (calcium carbonate, magnesium carbonate, or calcium phosphate) were used for th...
Source: Bioresource Technology - April 1, 2024 Category: Biotechnology Authors: Shin Futamata Yuichiro Onishi Shuji Adachi Pramote Khuwijitjaru Yoshiyuki Watanabe Fumito Tani Takashi Kobayashi Source Type: research
Enrichment of a mixed syngas-converting culture for volatile fatty acids and methane production
Bioresour Technol. 2024 Mar 29:130646. doi: 10.1016/j.biortech.2024.130646. Online ahead of print.ABSTRACTThe present study evaluated the production potential of CH4, carboxylic acids and alcohols from a mixed culture enriched using synthetic syngas. The influence of syngas concentration on the microbial community and products productivity and selectivity was investigated. The results demonstrated the enrichment of a mesophilic mixed culture capable of converting CO and H2 mainly to CH4 and acetate, along with butyrate. The selectivity values showed that acetate production was enhanced during the first cycle in all conditi...
Source: Bioresource Technology - March 31, 2024 Category: Biotechnology Authors: Silvia Garc ía-Casado Ra úl Muñoz Raquel Lebrero Source Type: research
Enrichment of a mixed syngas-converting culture for volatile fatty acids and methane production
Bioresour Technol. 2024 Mar 29:130646. doi: 10.1016/j.biortech.2024.130646. Online ahead of print.ABSTRACTThe present study evaluated the production potential of CH4, carboxylic acids and alcohols from a mixed culture enriched using synthetic syngas. The influence of syngas concentration on the microbial community and products productivity and selectivity was investigated. The results demonstrated the enrichment of a mesophilic mixed culture capable of converting CO and H2 mainly to CH4 and acetate, along with butyrate. The selectivity values showed that acetate production was enhanced during the first cycle in all conditi...
Source: Bioresource Technology - March 31, 2024 Category: Biotechnology Authors: Silvia Garc ía-Casado Ra úl Muñoz Raquel Lebrero Source Type: research
Amination and crosslinking of acetone-fractionated hardwood kraft lignin using different amines and aldehydes for sustainable bio-based wood adhesives
Bioresour Technol. 2024 Mar 28:130645. doi: 10.1016/j.biortech.2024.130645. Online ahead of print.ABSTRACTHardwood kraft lignin from the pulping industry is burned or discarded. Its valorization was conducted by subjecting fractionation, amination with ethylenediamine, diethylenetriamine, and monoethanolamine, and crosslinking with formaldehyde or glyoxal to obtain bio-based wood adhesives. Acetone-soluble and insoluble hardwood kraft lignin were prepared and subjected to amination and then crosslinking. Fourier transform infrared, 13C NMR, 15N NMR, and X-ray photoelectron spectroscopy results revealed successful amination...
Source: Bioresource Technology - March 30, 2024 Category: Biotechnology Authors: Saman Ghahri Byung-Dae Park Source Type: research
Third-generation D-lactic acid production using red macroalgae Gelidium amansii by co-fermentation of galactose, glucose and xylose
This study provided an important biorefinery strain for D-lactic acid production from macroalgae biomass.PMID:38554760 | DOI:10.1016/j.biortech.2024.130631 (Source: Bioresource Technology)
Source: Bioresource Technology - March 30, 2024 Category: Biotechnology Authors: Zhongyang Qiu Guangli Wang Wenjun Shao Longyu Cao Hufangguo Tan Shuai Shao Ci Jin Jun Xia Jianlong He Xiaoyan Liu Aiyong He Xushen Han Jiaxing Xu Source Type: research
Metabolically engineer Clostridium saccharoperbutylacetonicum for comprehensive conversion of acid whey into valuable biofuels and biochemicals
This study achieves the highest reported butanol titer and yield using acid whey as substrate in clostridia and marks pioneering production of esters using acid whey. The findings demonstrate an innovative bioprocess that enhances renewable feedstock biotransformation, thereby promoting economic viability and environmental sustainability of biomanufacturing.PMID:38554761 | DOI:10.1016/j.biortech.2024.130640 (Source: Bioresource Technology)
Source: Bioresource Technology - March 30, 2024 Category: Biotechnology Authors: Yuechao Ma Na Guo Shangjun Wang Yifen Wang Zhihua Jiang Liang Guo Wei Luo Yi Wang Source Type: research
Amination and crosslinking of acetone-fractionated hardwood kraft lignin using different amines and aldehydes for sustainable bio-based wood adhesives
Bioresour Technol. 2024 Mar 28:130645. doi: 10.1016/j.biortech.2024.130645. Online ahead of print.ABSTRACTHardwood kraft lignin from the pulping industry is burned or discarded. Its valorization was conducted by subjecting fractionation, amination with ethylenediamine, diethylenetriamine, and monoethanolamine, and crosslinking with formaldehyde or glyoxal to obtain bio-based wood adhesives. Acetone-soluble and insoluble hardwood kraft lignin were prepared and subjected to amination and then crosslinking. Fourier transform infrared, 13C NMR, 15N NMR, and X-ray photoelectron spectroscopy results revealed successful amination...
Source: Bioresource Technology - March 30, 2024 Category: Biotechnology Authors: Saman Ghahri Byung-Dae Park Source Type: research
Third-generation D-lactic acid production using red macroalgae Gelidium amansii by co-fermentation of galactose, glucose and xylose
This study provided an important biorefinery strain for D-lactic acid production from macroalgae biomass.PMID:38554760 | DOI:10.1016/j.biortech.2024.130631 (Source: Bioresource Technology)
Source: Bioresource Technology - March 30, 2024 Category: Biotechnology Authors: Zhongyang Qiu Guangli Wang Wenjun Shao Longyu Cao Hufangguo Tan Shuai Shao Ci Jin Jun Xia Jianlong He Xiaoyan Liu Aiyong He Xushen Han Jiaxing Xu Source Type: research
Metabolically engineer Clostridium saccharoperbutylacetonicum for comprehensive conversion of acid whey into valuable biofuels and biochemicals
This study achieves the highest reported butanol titer and yield using acid whey as substrate in clostridia and marks pioneering production of esters using acid whey. The findings demonstrate an innovative bioprocess that enhances renewable feedstock biotransformation, thereby promoting economic viability and environmental sustainability of biomanufacturing.PMID:38554761 | DOI:10.1016/j.biortech.2024.130640 (Source: Bioresource Technology)
Source: Bioresource Technology - March 30, 2024 Category: Biotechnology Authors: Yuechao Ma Na Guo Shangjun Wang Yifen Wang Zhihua Jiang Liang Guo Wei Luo Yi Wang Source Type: research
Machine learning assisted combined systems of wastewater treatment plants with constructed wetlands optimal decision-making
This study proposed an efficient framework for optimizing the design and operation of combined systems of wastewater treatment plants (WWTP) and constructed wetlands (CW). The framework coupled a WWTP model with a CW model and used a multi-objective evolutionary algorithm to identify trade-offs between energy consumption, effluent quality, and construction cost. Compared to traditional design and management approaches, the framework achieved a 27 % reduction in WWTP energy consumption or a 44 % reduction in CW cost while meeting strict effluent discharge limits for Chinese WWTP. The framework also identified feasible decis...
Source: Bioresource Technology - March 29, 2024 Category: Biotechnology Authors: Wei Dai Ji-Wei Pang Ying-Jun Zhao Jie Ding Han-Jun Sun Hai Cui Hai-Rong Mi Yi-Lin Zhao Lu-Yan Zhang Nan-Qi Ren Shan-Shan Yang Source Type: research
Anaerobic acidification membrane bioreactor operating at acidic condition for treating concentrated municipal wastewater: Performance and implication
In conclusion, this study demonstrated that a pH of 5.0 is optimal for the AAMBR treating municipal wastewater.PMID:38552856 | DOI:10.1016/j.biortech.2024.130644 (Source: Bioresource Technology)
Source: Bioresource Technology - March 29, 2024 Category: Biotechnology Authors: Huihui Zhong Qiming Wang Mengfei Wu Pin Zhao Weilong Song Xinhua Wang Source Type: research
Differential surface modification mechanism of chalcopyrite and pyrite by Thiobacillus ferrooxidans and its response to bioflotation
This study addresses this challenge by isolating and enriching Thiobacillus ferrooxidans (T·f) from acidic mine drainage, employing it as a biosurfactant. The modification mechanism of T·f was thoroughly analyzed. Fe dissolution through biological oxidation formed a passivation layer (jarosite [KFe3(SO4)2(OH)6], elemental sulfur (S0), and metal sulfides (Cu/Fe-S) on the surface of minerals. Metal oxides, hydroxides, and sulfates were detected on the surface of two minerals, but the difference was that elemental sulfur (S0) and copper sulfide (Cu-S) were detected on the surface of chalcopyrite. elucidating the fundamental...
Source: Bioresource Technology - March 29, 2024 Category: Biotechnology Authors: Chao Su Jinpeng Cai Qifang Zheng Rong Peng Xingcai Yu Peilun Shen Dianwen Liu Source Type: research
Start-up of pilot-scale ANAMMOX reactor for low-carbon nitrogen removal from anaerobic digestion effluent of kitchen waste
Bioresour Technol. 2024 Mar 27:130629. doi: 10.1016/j.biortech.2024.130629. Online ahead of print.ABSTRACTThe pilot-scale simultaneous denitrification and methanation (SDM)-partial nitrification (PN)-anaerobic ammonia oxidation (Anammox) system was designed to treat anaerobic digestion effluent of kitchen waste (ADE-KW). The SDM-PN was first started to avoid the inhibition of high-concentration pollutants. Subsequently, Anammox was coupled to realize autotrophic nitrogen removal. Shortcut nitrification-denitrification achieved by the SDM-PN. The NO2--N accumulation (92 %) and NH4+-N conversion (60 %) were achieved by PN, a...
Source: Bioresource Technology - March 29, 2024 Category: Biotechnology Authors: Tianqi Liu Jiaweng Guo Xiang Li Yan Yuan Yong Huang Xiaocheng Zhu Source Type: research
