J Shanthi Sravan, Hyeryeong Lee, Yuna Bang, In Seop Chang
{"title":"Nadh-dependent CO<sub>2</sub> reductase on graphite for capacitive electrocatalytic interfacing mediated by solid-binding peptide.","authors":"J Shanthi Sravan, Hyeryeong Lee, Yuna Bang, In Seop Chang","doi":"10.1016/j.biortech.2024.131841","DOIUrl":"https://doi.org/10.1016/j.biortech.2024.131841","url":null,"abstract":"<p><p>NAD<sup>+</sup>/NADH-dependent CO<sub>2</sub> reductase (CR) adapted from Candida boidinii (PDB ID: 5DNA) was introduced with a non-native graphite-specific peptide (Gr; IMVTESSDYSSY) as molecular binder to modify the native enzyme (CR-WT) with peptide insertion at N, C and NC terminus (CR-GrN, CR-GrC and CR-GrNC) to assess the influence of site-specific fusion on electrode binding. Graphite surface-binding activity relative to the electrode topography was evaluated for both native and synthetic CRs to establish the enzyme-electrode interfacing potentiality for efficient electron channelling. Impact of site-specific peptide fusion and amino-acids positioning was assessed for the active site availability/binding and adsorption/desorption ability towards efficient CO<sub>2</sub>-based redox catalysis. Solid-binding peptide and graphite surface interactive ability on direct electron transfer was studied with structural, enzymatic and electrochemical characterizations towards efficient CO<sub>2</sub> electrosynthesis. Overall, enzymatic CO<sub>2</sub> reduction to formate based on interactive ability of enzyme-electrode complex with peptide modifications and graphite surface towards possibility of bioelectronics upscaling was depicted.</p>","PeriodicalId":258,"journal":{"name":"Bioresource Technology","volume":" ","pages":"131841"},"PeriodicalIF":9.7,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142666514","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Characterization of three novel dimethyl disulfide degrading bacteria and their potential degradation pathways.","authors":"Xianyun Zheng, Yuyu Li, JingChao Xu, Quanxi Zhang, Yuexia Zhang","doi":"10.1016/j.biortech.2024.131833","DOIUrl":"https://doi.org/10.1016/j.biortech.2024.131833","url":null,"abstract":"<p><p>Dimethyl disulfide (DMDS) is an odor compound characterized by the lowest olfactory threshold and high toxicity. It is indispensable to explore the bacteria with high resistance and degradation efficiency to DMDS. Acinetobacter lwoffii, Pseudomonas mendocina, and Myroides odoratus were isolated from kitchen waste. After 6 days of individual treatment, the removal rates were 34.22 %, 40.95 %, and 41.94 % respectively. The DMDS metabolic pathways based on metagenomic assays were discovered to be incomplete due to the insufficient annotation of some key genes in the current database. Following 3 days of treatment with bacterial consortia at ratios of 5:1 for A. lwoffii C2/ M. odoratus C7 and 1:1:1 for the three strains achieved 100 % DMDS removal. Additionally, the consortia reduced hydrogen sulfide (H<sub>2</sub>S) and dimethyl sulfide (DMS).This discovery broadens the spectrum of bacteria exhibiting high tolerance and efficient degradation of DMDS, with significant implications for DMDS removal and odor treatment.</p>","PeriodicalId":258,"journal":{"name":"Bioresource Technology","volume":" ","pages":"131833"},"PeriodicalIF":9.7,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142666347","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Anna Malaika, Katarzyna Morawa Eblagon, Nikola Matuszek, M Fernando R Pereira, Mieczysław Kozłowski
{"title":"Towards valorization of glycerol and molasses: Carbon-based catalysts from molasses for the synthesis of acetins.","authors":"Anna Malaika, Katarzyna Morawa Eblagon, Nikola Matuszek, M Fernando R Pereira, Mieczysław Kozłowski","doi":"10.1016/j.biortech.2024.131834","DOIUrl":"https://doi.org/10.1016/j.biortech.2024.131834","url":null,"abstract":"<p><p>Crude sugarcane molasses (SCM) was successfully applied for the first time as a bio-feedstock for producing biochar catalysts for glycerol upgrading. Preparation methods were developed, including partial or hydrothermal carbonization (abbr. PC and HTC) and chemical activation. After functionalization with -SO<sub>3</sub>H groups, the catalysts were tested for the esterification of glycerol to acetins. The materials varied in their textural and chemical features, particularly in the -SO<sub>3</sub>H content, giving the single-step PC method a distinct advantage. The best catalyst yielded approximately 74 % of di- and tri-acetins with 97 % glycerol conversion within only 2 h of the reaction and demonstrated great stability over three consecutive cycles. The formation of the desired TA product was correlated with the concentration of -SO<sub>3</sub>H groups. Despite being non-porous, the most active PC catalyst possessed a compact structure with a high abundance and easy accessibility of -SO<sub>3</sub>H, COOH, and -OH groups on its surface.</p>","PeriodicalId":258,"journal":{"name":"Bioresource Technology","volume":" ","pages":"131834"},"PeriodicalIF":9.7,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142666518","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Gina Welsing, Birger Wolter, Greta E K Kleinert, Frederike Göttsch, Werner Besenmatter, Rui Xue, Alessandra Mauri, Dominik Steffens, Sebastian Köbbing, Weiliang Dong, Min Jiang, Uwe T Bornscheuer, Ren Wei, Till Tiso, Lars M Blank
{"title":"Two-step biocatalytic conversion of post-consumer polyethylene terephthalate into value-added products facilitated by genetic and bioprocess engineering.","authors":"Gina Welsing, Birger Wolter, Greta E K Kleinert, Frederike Göttsch, Werner Besenmatter, Rui Xue, Alessandra Mauri, Dominik Steffens, Sebastian Köbbing, Weiliang Dong, Min Jiang, Uwe T Bornscheuer, Ren Wei, Till Tiso, Lars M Blank","doi":"10.1016/j.biortech.2024.131837","DOIUrl":"https://doi.org/10.1016/j.biortech.2024.131837","url":null,"abstract":"<p><p>Solving the plastic crisis requires high recycling quotas and technologies that allow open loop recycling. Here a biological plastic valorization approach consisting of tandem enzymatic hydrolysis and monomer conversion of post-consumer polyethylene terephthalate into value-added products is presented. Hydrolysates obtained from enzymatic degradation of pre-treated post-consumer polyethylene terephthalate bottles in a stirred-tank reactor served as the carbon source for a batch fermentation with an engineered Pseudomonas putida strain to produce 90mg/L of the biopolymer cyanophycin. Through fed-batch operation, the fermentation could be intensified to 1.4 g/L cyanophycin. Additionally, the upcycling of polyethylene terephthalate monomers to the biosurfactants (hydroxyalkanoyloxy)alkanoates and rhamnolipids is presented. These biodegradable products hold significant potential for applications in areas such as detergents, building blocks for novel polymers, and tissue engineering. In summary, the presented bio-valorization process underscores that addressing challenges like the plastic crisis requires an interdisciplinary approach.</p>","PeriodicalId":258,"journal":{"name":"Bioresource Technology","volume":" ","pages":"131837"},"PeriodicalIF":9.7,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142666534","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Virus-bacterium interaction involved in element cycles in biological treatment of coking wastewater.","authors":"Zhijie Tan, Wenli Chen, Xinyi Wei, Zhaoji Qiu, Weixiong Zhuang, Baoshan Zhang, Junting Xie, Yuexia Lin, Yuan Ren, Sergei Preis, Chaohai Wei, Shuang Zhu","doi":"10.1016/j.biortech.2024.131839","DOIUrl":"https://doi.org/10.1016/j.biortech.2024.131839","url":null,"abstract":"<p><p>Although prokaryotic microbes in coking wastewater (CWW) treatment have been comprehensively studied, the ecological functions of viruses remain unclear. A full-scale CWW biological treatment AOHO combination was studied for the virus-bacterium interactions involved in element cycles by metaviromics, metagenomics and physicochemical characteristics. Results showed the unique viromic profile with Cirlivirales and Petitvirales as the dominant viruses infecting functional bacteria hosts. The auxiliary metabolic genes (AMGs) focused on element cycles, including metabolisms of carbon (fadA), nitrogen (glnA), sulfur (mddA and cysK) and phosphorus (phoH). Other AMGs were involved in toxic tolerance of hosts, improving their cell membrane and wall robustness, antioxidant, DNA repair and cobalamin biosynthesis. Vice versa, the bloomed host provided fitness advantages for viruses. Dissolved oxygen was found to be the key factor shaping the distributions of viral community and AMGs. Summarizing, the study exposed the mutual virus-bacterium interaction in the AOHO combination providing stable treatment efficiency.</p>","PeriodicalId":258,"journal":{"name":"Bioresource Technology","volume":" ","pages":"131839"},"PeriodicalIF":9.7,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142666535","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Novel mixotrophic denitrification biofilter for efficient nitrate removal using dual electron donors of polycaprolactone and thiosulfate.","authors":"Ruikang Wang, Wei Zeng, Haohao Miao, Qingteng Gong, Yongzhen Peng","doi":"10.1016/j.biortech.2024.131836","DOIUrl":"https://doi.org/10.1016/j.biortech.2024.131836","url":null,"abstract":"<p><p>A novel mixotrophic denitrification biofilter for nitrate removal using polycaprolactone and thiosulfate (MD-PT) as electron donors was investigated. MD-PT achieved high nitrate removal efficiency of approximately 99.8 %. The nitrate removal rates of MD-PT reached 1820 g N/m<sup>3</sup>/d, which was 304 g N/m<sup>3</sup>/d higher than that of autotrophic denitrification biofilter using thiosulfate (AD-T). Autotrophic and heterotrophic denitrification pathways in MD-PT were responsible for 67.6-94.5 % and 4.7-32.4 % of the nitrate removal, respectively. The production of SO<sub>4</sub><sup>2-</sup> in MD-PT was lower than that in AD-T, and the effluent pH was maintained at approximately 7.3 without acid-base neutralization. The abundance of key genes involved in carbon, nitrogen, and sulfur transformation was enhanced, which improved the nitrate removal of MD-PT. Alicycliphilus and Simplicispira related to organic compounds degradation were enriched after the addition of polycaprolactone. This research provided new insights into mixotrophic denitrification systems.</p>","PeriodicalId":258,"journal":{"name":"Bioresource Technology","volume":" ","pages":"131836"},"PeriodicalIF":9.7,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142666516","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Impact of carbon/nitrogen ratio on sequencing batch biofilm reactors initiated with different seed sludges for treating actual mariculture effluents.","authors":"Xiao-Yan Fan, Shi-Long Zhou, Yanling Yang, Shen-Bin Cao, Yue Niu, Meng-Yuan Zheng, Jun-Ru Zhao","doi":"10.1016/j.biortech.2024.131838","DOIUrl":"https://doi.org/10.1016/j.biortech.2024.131838","url":null,"abstract":"<p><p>The impact of carbon/nitrogen (C/N) ratio on sequencing batch biofilm reactor (SBBR) initiated with different seed sludges for treating actual mariculture effluent was explored. Increasing the C/N ratio significantly enhanced the nitrogen removal efficiency, achieving average removal efficiency of 95% for ammonia nitrogen and 73% for total nitrogen at ratio of 30, while the impact of seed sludge was minimal. High C/N ratio promoted the secretion of tightly bound extracellular polymeric substances (TB-EPS), which showed significant correlation with nitrogen removal. Interactions between bacteria and archaea were enhanced and conditionally rare or abundant taxa were the keystone taxa. High C/N ratio inhibited the relative abundance of ammonia-oxidizing archaea (Candidatus_Nitrosopumilus) and bacteria (Nitrosomonas), but promoted the heterotrophic nitrification-aerobic denitrification bacteria (Halomonas). The expression of nitrogen removal functional genes significantly correlated with functional genera. This study emphasized the crucial role of high C/N ratios in biological nitrogen removal from actual mariculture effluent.</p>","PeriodicalId":258,"journal":{"name":"Bioresource Technology","volume":" ","pages":"131838"},"PeriodicalIF":9.7,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142666436","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Zichao Hu, Longfei Tang, Peipei Gao, Bin Wang, Chang Zhang, Yue Sheng, Weitong Pan, Lu Ding, Xueli Chen, Fuchen Wang
{"title":"Elucidating synergistic effects during co-pyrolysis of plastics and paper in municipal solid waste: Thermal behavior and product characteristics.","authors":"Zichao Hu, Longfei Tang, Peipei Gao, Bin Wang, Chang Zhang, Yue Sheng, Weitong Pan, Lu Ding, Xueli Chen, Fuchen Wang","doi":"10.1016/j.biortech.2024.131831","DOIUrl":"https://doi.org/10.1016/j.biortech.2024.131831","url":null,"abstract":"<p><p>Plastics and paper are common components of municipal solid waste (MSW), making an in-depth understanding of their interactions essential for MSW thermal conversion. In this study, the co-pyrolysis behavior of plastic and paper was investigated. Firstly, the thermal decomposition characteristics were analyzed. Secondly, the pyrolytic behavior was elucidated in a fixed-bed reactor. Thirdly, the impact of plastic melting on co-pyrolysis was clarified. Results indicated that the thermal decomposition was accelerated between 250 °C and 283 °C, while temperatures above 400 °C resulted in inhibition. During fixed-bed pyrolysis, char yields (70.7-16.9 %) were increased by 4.0 %-12.7 %. This increase was mainly due to plastic melting, which contributed 8.6 % and increased aliphatic carbon content. Besides, PVC and PET exhibited a broader melting range > 500 °C. Bio-oil yields (25.5-70.6 %) were reduced by 3.4 %-12.4 %, primarily affecting aliphatic compositions. Gas yields (3.8-6.5 %) were reduced < 400 °C but increased with temperature, involving primarily H<sub>2</sub>, CH<sub>4</sub>, C<sub>2</sub>H<sub>4</sub>, and C<sub>2</sub>H<sub>6</sub>.</p>","PeriodicalId":258,"journal":{"name":"Bioresource Technology","volume":" ","pages":"131831"},"PeriodicalIF":9.7,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142646102","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jun Yin, Jianyu Jin, Jing Wang, Hongwei Fang, Xiaoqin Yu, Jie He, Ting Chen
{"title":"Targeted volatile fatty acid production based on lactate platform in mixed culture fermentation: Insights into carbon conversion and microbial metabolic traits.","authors":"Jun Yin, Jianyu Jin, Jing Wang, Hongwei Fang, Xiaoqin Yu, Jie He, Ting Chen","doi":"10.1016/j.biortech.2024.131835","DOIUrl":"https://doi.org/10.1016/j.biortech.2024.131835","url":null,"abstract":"<p><p>In this study, the effects of fermentation pH and redox potential on the performance of the lactate platform were comprehensively evaluated. The results indicated that the type of acidogenic fermentation was influenced by redox potential, while pH was correlated with volatile fatty acid yield. The highest propionate yield was achieved under anaerobic conditions at a pH of9, with the dominant genus Serpentinicella producing propionate through the acrylate pathway. The highest acetate yield was produced under facultative conditions at a pH of 6. This production was primarily facilitated by the dominant genera unclassified_f__Enterobacteriaceae and Desulfovibrio, which exhibited significant upregulation of the expression of related genes. Furthermore, ecological processes were employed to establish the relationship between environmental factors and microbial communities. This study emphasized the process of converting lactate into volatile fatty acid, providing a theoretical basis for future strategies aimed at regulating targeted acid production.</p>","PeriodicalId":258,"journal":{"name":"Bioresource Technology","volume":" ","pages":"131835"},"PeriodicalIF":9.7,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142646116","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Achieving efficient autotrophic nitrogen removal in anaerobic membrane bioreactor plus membrane aerated biofilm reactor by regulating nutrient ratios","authors":"Yu-Lin Han, Ling-Dong Shi, He-Ping Zhao","doi":"10.1016/j.biortech.2024.131832","DOIUrl":"10.1016/j.biortech.2024.131832","url":null,"abstract":"<div><div>It is feasible to integrate an anaerobic membrane bioreactor with a membrane aerated biofilm reactor to efficiently implement the sulfate reduction, simultaneous nitrification and autotrophic denitrification process. However, the effect of parameters on nutrient removal and environmental impacts of the process are unclear. In this study, the reactor performance was mainly influenced by the chemical oxygen demand to sulfate (COD/S) ratio and the ammonium to sulfate (N/S) ratio in long-term operation. Significant models were developed to optimize the two factors using the response surface methodology. Under optimal conditions (COD/S ratio of 2.5 and N/S ratio of 0.3), the system could remove above 86 % COD, 99 % ammonium, and 92 % total inorganic nitrogen. Moreover, this process could reduce energy consumption by 30 % and global warming potential by 50 % compared with traditional anaerobic/oxic activated sludge process. These findings provide guidance for the application of this technology in sulfate-containing municipal sewage treatment.</div></div>","PeriodicalId":258,"journal":{"name":"Bioresource Technology","volume":"416 ","pages":"Article 131832"},"PeriodicalIF":9.7,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142643592","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}