Xinlin Zhao, Yuanchang Wang, Chenyuan Wang, Wei Zhou, Da Ouyang, Shuaishuai Gao, Xiaofei Tan, Rong Huang, Yuan Guo
{"title":"Chitooligosaccharide application enhanced the growth and phytoremediation efficiency of industrial hemp in Cd-contaminated soils","authors":"Xinlin Zhao, Yuanchang Wang, Chenyuan Wang, Wei Zhou, Da Ouyang, Shuaishuai Gao, Xiaofei Tan, Rong Huang, Yuan Guo","doi":"10.1016/j.biortech.2024.131998","DOIUrl":"https://doi.org/10.1016/j.biortech.2024.131998","url":null,"abstract":"Hemp has been widely used for cadmium (Cd) remediation. However, its remediation efficiency needs to be improved. Chitooligosaccharides can enhance plant resistance and growth; however, their effects on hemp for Cd-remediation remain unclear. Herein, a greenhouse pot experiment was conducted to investigate the effects of three doses (0, 22.5, and 45 μg m<ce:sup loc=\"post\">−2</ce:sup>) of chitooligosaccharides (COS), chitin-oligosaccharides (NACOS), and hetero-chitooligosaccharides (HTCOS) on the growth and Cd-remediation efficiency of hemp. Results showed that chitooligosaccharides promoted the antioxidant system and aerial biomass (maximum 84 %) depending on doses and types. COS (22.5 μg m<ce:sup loc=\"post\">−2</ce:sup> under 60 mg cadmium kg<ce:sup loc=\"post\">−1</ce:sup> soil), NACOS, and HTCOS significantly elevated the Cd concentration in hemp. Consequently, NACOS and HTCOS (45 μg m<ce:sup loc=\"post\">−2</ce:sup>) significantly increased the average Cd removal up to 61 % and 81 %, respectively, compared with the control. Therefore, spraying chitooligosaccharides can enhance growth and phytoremediation efficiency of hemp by elevating aerial biomass and cadmium concentration of hemp.","PeriodicalId":258,"journal":{"name":"Bioresource Technology","volume":"62 1","pages":""},"PeriodicalIF":11.4,"publicationDate":"2024-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142849298","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}
Kaixuan Wang, Xiaobin Wen, Yi Ding, Yahong Geng, Youzhi Yu, Wenjie Tian, Yeguang Li, Zhongjie Wang
{"title":"Revealing mechanisms of high protein accumulation in Graesiella emersonii WBG-1 under heterotrophic condition.","authors":"Kaixuan Wang, Xiaobin Wen, Yi Ding, Yahong Geng, Youzhi Yu, Wenjie Tian, Yeguang Li, Zhongjie Wang","doi":"10.1016/j.biortech.2024.131992","DOIUrl":"https://doi.org/10.1016/j.biortech.2024.131992","url":null,"abstract":"<p><p>Low protein content under heterotrophic conditions limits the industrial production of proteins by microalgae. In this study, Graesiella emersonii WBG-1 efficiently synthesized and accumulated proteins (64.03%) under heterotrophic conditions, distinguishing it from other microalgae. Integrated transcriptome and proteome analyses revealed that genes and proteins associated with the photosynthetic system were significantly upregulated under heterotrophic culture compared to photoautotrophic and mixotrophic conditions. Nitrogen assimilation was enhanced while carbohydrate and fatty acid biosynthesis were restricted, carbon redirected towards amino acid and protein synthesis. Ribosome biogenesis was strengthened, and translation initiation and elongation factors were upregulated, increasing the translational activity of algal cells and promoting overall protein synthesis. Overall, these findings elucidate the mechanisms underlying efficient protein synthesis in G. emersonii WBG-1 under heterotrophic conditions, offering new insights and complementary perspectives on the regulation of protein synthesis in microalgae across different nutritional modes.</p>","PeriodicalId":258,"journal":{"name":"Bioresource Technology","volume":" ","pages":"131992"},"PeriodicalIF":9.7,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142851830","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}
Pedro Reynolds-Brandão, Francisco Quintas-Nunes, Constança Bertrand, Rodrigo M Martins, Maria T B Crespo, Cláudia F Galinha, Francisco X Nascimento
{"title":"Integration of spectroscopic techniques and machine learning for optimizing Phaeodactylum tricornutum cell and fucoxanthin productivity.","authors":"Pedro Reynolds-Brandão, Francisco Quintas-Nunes, Constança Bertrand, Rodrigo M Martins, Maria T B Crespo, Cláudia F Galinha, Francisco X Nascimento","doi":"10.1016/j.biortech.2024.131988","DOIUrl":"https://doi.org/10.1016/j.biortech.2024.131988","url":null,"abstract":"<p><p>The development of sustainable and controlled microalgae bioprocesses relies on robust and rapid monitoring tools that facilitate continuous process optimization, ensuring high productivity and minimizing response times. In this work, we analyse the influence of medium formulation on the growth and productivity of axenic Phaeodactylum tricornutumcultures and use the resulting data to develop machine learning (ML) models based on spectroscopy. Our culture assays produced a comprehensive dataset of 255 observations, enabling us to train 55 (24 + 31) robust models that predict cells or fucoxanthin directly from either absorbance or 2D-fluorescence spectroscopy. We demonstrate that medium formulation significantly affects cell and fucoxanthin concentrations, and that these effects can be effectively monitored using the developed models, free of overfitting. On a separate data subset, the models demonstratedhigh accuracy (cell: R<sup>2</sup> = 0.98, RMSEP = 2.41x10<sup>6</sup> cells/mL; fucoxanthin: R<sup>2</sup> = 0.91 and RMSEP = 0.65 ppm), providing a practical, cost-effective, and environmentally friendly alternative to standard analytical methods.</p>","PeriodicalId":258,"journal":{"name":"Bioresource Technology","volume":" ","pages":"131988"},"PeriodicalIF":9.7,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142851817","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}
Samaneh Ghaedi, Hamid Rajabi, Mojgan Hadi Mosleh, Majid Sedighi
{"title":"MOF biochar composites for environmental protection and pollution control","authors":"Samaneh Ghaedi, Hamid Rajabi, Mojgan Hadi Mosleh, Majid Sedighi","doi":"10.1016/j.biortech.2024.131982","DOIUrl":"https://doi.org/10.1016/j.biortech.2024.131982","url":null,"abstract":"Research studies on Metal Organic Frameworks (MOF) based composites and their potential applications in environmental engineering and pollution control have recently emerged. An attractive material to form MOF composites is biochar (BC); a low-cost, highly porous carbonaceous by-product of biomass pyrolysis. This paper presents a critical review on MOF-biochar composites, focusing on fabrication, characterisation, modification, and applications in environmental protection and pollution control. The adsorption mechanisms and influential parameters are systematically examined to develop an insight into interactions between MOF and biochar in remedial process. The adsorption capacity of composites is generally doubled compared to the standalone biochar, while MOFs maintain their crystallinity, even over multiple regeneration cycles, indicating the composites’ long-term applicability and sustainability. These findings highlight the potential of MOF-biochar composites for environmental applications and identify key areas for further research to enhance their sustainability in environmental protection and green energy.","PeriodicalId":258,"journal":{"name":"Bioresource Technology","volume":"14 1","pages":""},"PeriodicalIF":11.4,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142841265","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}
Tong Wang, Xiyao Li, Qiongpeng Dan, Bo Wang, HanBin Wang, Yongzhen Peng
{"title":"Unraveling rapid start-up and stable maintenance of partial nitrification in domestic wastewater under high dissolved oxygen","authors":"Tong Wang, Xiyao Li, Qiongpeng Dan, Bo Wang, HanBin Wang, Yongzhen Peng","doi":"10.1016/j.biortech.2024.131989","DOIUrl":"https://doi.org/10.1016/j.biortech.2024.131989","url":null,"abstract":"Partial nitrification (PN), is a promising nitrogen removal technology in wastewater treatment. Contrary to the dogma that low dissolved oxygen (DO) is more conducive to achieving PN, this study successfully established PN within 7 days under high DO conditions (> 6 mg/L). Ultra-stable PN was maintained over 143 days with an average nitrite accumulation ratio of 98 % treating real domestic wastewater. Kinetics indicated that the maximum activity difference increased to 40 folds between ammonia oxidizing bacteria (AOB) and nitrite oxidizing bacterium (NOB), resulting in AOB prospering while NOB declined. High DO operation reshaped the nitrifier community with AOB genera relative abundance increased substantially (0.1 %-1.2 %), while the predominant NOB <ce:italic>Nitrospira</ce:italic> was below the detection limit. Batch test confirmed the reproducibility of this strategy to achieve PN using ordinary activated sludge. This study provides an update on developing a feasible approach for the rapid realization and stable maintenance of mainstream PN.","PeriodicalId":258,"journal":{"name":"Bioresource Technology","volume":"31 1","pages":""},"PeriodicalIF":11.4,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142849299","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}
Rui Xiao, Chang Tian, Haijun Wang, Hui Zhang, Huan Chen, Howard H Chou
{"title":"Two-stage continuous cultivation of microalgae overexpressing cytochrome P450 improves nitrogen and antibiotics removal from livestock and poultry wastewater.","authors":"Rui Xiao, Chang Tian, Haijun Wang, Hui Zhang, Huan Chen, Howard H Chou","doi":"10.1016/j.biortech.2024.131994","DOIUrl":"https://doi.org/10.1016/j.biortech.2024.131994","url":null,"abstract":"<p><p>Improper treatment of livestock and poultry wastewater (LPWW) rich in ammonium nitrogen (NH<sub>4</sub>-N) and antibiotics leads to eutrophication, and contributes to the risk of creating drug-resistant pathogens. The design-build-test-learn strategy was used to engineer a continuous process using Chlorella vulgaris to remove NH<sub>4</sub>-N and antibiotics. The optimized system removed NH<sub>4</sub>-N at a rate of 306 mg/L/d, degraded 99 % of lincomycin, and reduced the hydraulic retention time to 4 days. The physiological, metabolic, and genetic mechanisms used by microalgae to tolerate LPWW, remove NH<sub>4</sub>-N, and degrade antibiotics were elucidated. A new cytochrome P450 enzyme important for NH<sub>4</sub>-N and antibiotic removal was identified. Finally, application of synthetic biology improved the NH<sub>4</sub>-N removal rate to 470 mg/L/d, which is the highest removal rate using microalgae reported to date. This research contributes to the mechanistic understanding of wastewater detoxification by microalgae, and the goal of achieving a circular bioeconomy for nutrient and water recycling.</p>","PeriodicalId":258,"journal":{"name":"Bioresource Technology","volume":" ","pages":"131994"},"PeriodicalIF":9.7,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142851831","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":"Anaerobic co-biodegradation of polyhydroxyalkanoate and swine manure for volatile fatty acid production: The impact of C/N ratios and microbial dynamics.","authors":"Jiaxin Sun, Tanlong Zhou, Fubin Yin, Shunli Wang","doi":"10.1016/j.biortech.2024.131995","DOIUrl":"https://doi.org/10.1016/j.biortech.2024.131995","url":null,"abstract":"<p><p>Polyhydroxyalkanoate (PHA) is the important biodegradable plastic, however, biodegradation of PHA waste in anaerobic environments emits more CH<sub>4</sub>, a potent greenhouse gas. Bioconversion of PHA waste to useful byproducts - volatile fatty acids (VFAs) is a practical method to upcycle carbon from PHA. In this study, PHA waste was anaerobically co-digested with swine manure (SM) (the typical high nitrogen waste) at different C/N ratios. The results indicate that co-digestion of PHA and SM with a C/N ratio of 32.1 achieved VFA production of 5488 mg COD/L and 0.20 g COD/g VS. No significant differences were found in terms of the highest VFA concentrations between treatments with C/N ratios of 43.4 and 32.1. VFA produciton of 3655 mg COD/L and 0.14 g COD/g VS was achieved at 19 days by adjusting the C/N ratio to 19.2. Four bacteria were identified as dominant microorganisms responsible for converting PHA and SM to VFA.</p>","PeriodicalId":258,"journal":{"name":"Bioresource Technology","volume":" ","pages":"131995"},"PeriodicalIF":9.7,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142851815","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":"Fueling the protein transition: Can waste-derived ethanol enable efficient and high-quality microbial protein production?","authors":"L Van Peteghem, S Matassa, M Sakarika","doi":"10.1016/j.biortech.2024.131990","DOIUrl":"https://doi.org/10.1016/j.biortech.2024.131990","url":null,"abstract":"<p><p>Meeting the protein needs of a growing population will require significant resources. In this context, microbial protein (MP) offers a nutritious and versatile protein source from recovered resources. This meta-analysis of over 100 studies examines the efficiency and nutritional quality of MP production using ethanol. Ethanol, a feedstock derived from CO<sub>2</sub> and biological waste, is used by various microorganisms, and has an established role in the food sector. Results show that ethanol-based MP production is technically feasible for food applications, reaching biomass concentrations of 14-230 g/L and productivities of 11-13 g/L/h. The protein content of MP correlates with productivity, and the nutritional quality of ethanol-grown MP matches common sources like pork and tofu. Lastly, operational choices affect the techno-economic feasibility of using waste-derived ethanol and other recovered resources. This meta-analysis highlights the potential of ethanol-grown MP, though further research is needed to close existing knowledge gaps.</p>","PeriodicalId":258,"journal":{"name":"Bioresource Technology","volume":" ","pages":"131990"},"PeriodicalIF":9.7,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142851816","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}
Ben Dai, Jingzhou Zhou, Zuobin Wang, Yifeng Yang, Zhenyu Wang, Junxia He, Siqing Xia, Bruce E. Rittmann
{"title":"Hydrazine promoted nitrite reduction in partial-denitrification by enhancing organic-substrate uptake and electron transport","authors":"Ben Dai, Jingzhou Zhou, Zuobin Wang, Yifeng Yang, Zhenyu Wang, Junxia He, Siqing Xia, Bruce E. Rittmann","doi":"10.1016/j.biortech.2024.131991","DOIUrl":"https://doi.org/10.1016/j.biortech.2024.131991","url":null,"abstract":"Partial denitrification coupled with anammox is a promising approach for sustainable nitrogen removal from wastewater. However, this coupling can be influenced by hydrazine (N<ce:inf loc=\"post\">2</ce:inf>H<ce:inf loc=\"post\">4</ce:inf>) released by anammox bacteria. This study aimed to reveal how N<ce:inf loc=\"post\">2</ce:inf>H<ce:inf loc=\"post\">4</ce:inf> regulates partial denitrification. Short-term batch experiments showed that 0.5 to 10 mg N/L of N<ce:inf loc=\"post\">2</ce:inf>H<ce:inf loc=\"post\">4</ce:inf> promoted nitrite (NO<ce:inf loc=\"post\">2</ce:inf><ce:sup loc=\"post\">−</ce:sup>) accumulation, likely by inhibiting the electron transfer from <ce:italic>cyt c</ce:italic> to nitrite reductase. However, long-term exposure to N<ce:inf loc=\"post\">2</ce:inf>H<ce:inf loc=\"post\">4</ce:inf> (0.5 and 1 mg N/L) shifted the microbial community and increased NO<ce:inf loc=\"post\">2</ce:inf><ce:sup loc=\"post\">−</ce:sup> reduction. This exposure enriched the genera <ce:italic>OLB8</ce:italic>, <ce:italic>Thauera</ce:italic>, and <ce:italic>f_Rhodocyclaceae</ce:italic>, and increased the abundance of genes involved in EPS formation, substrate transport and electron transport. The long-term outcome was more NO<ce:inf loc=\"post\">2</ce:inf><ce:sup loc=\"post\">−</ce:sup> reduction to N<ce:inf loc=\"post\">2</ce:inf> and more substrate (COD) oxidation. While N<ce:inf loc=\"post\">2</ce:inf>H<ce:inf loc=\"post\">4</ce:inf> benefits NO<ce:inf loc=\"post\">2</ce:inf><ce:sup loc=\"post\">−</ce:sup> accumulation in short-term, the mechanism is not sustainable, highlighting the importance of minimizing N<ce:inf loc=\"post\">2</ce:inf>H<ce:inf loc=\"post\">4</ce:inf> release for successful in such coupled nitrogen removal systems.","PeriodicalId":258,"journal":{"name":"Bioresource Technology","volume":"63 1","pages":""},"PeriodicalIF":11.4,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142841264","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":"Genome-based analysis reveals niche differentiation among Firmicutes in full-scale anaerobic digestion systems","authors":"Thi Vinh Nguyen, Hoang Phuc Trinh, Hee-Deung Park","doi":"10.1016/j.biortech.2024.131993","DOIUrl":"https://doi.org/10.1016/j.biortech.2024.131993","url":null,"abstract":"Fermentative <ce:italic>Firmicutes</ce:italic> species are key players in anaerobic digestion; however, their niche differentiation based on carbohydrate utilization in full-scale systems remains unclear. In this study, we investigated niche differentiation among four major <ce:italic>Firmicutes</ce:italic> classes using a genome-centric approach, reconstructing 39 high-quality metagenome-assembled genomes. <ce:italic>Limnochordia</ce:italic> and <ce:italic>Clostridia</ce:italic> exhibited the broadest substrate versatility, utilizing 24% and 18% of the predicted substrates, respectively. Although common substrates were shared, each class demonstrated unique substrate preferences driven by distinct functional and metabolic differences. <ce:italic>Limnochordia</ce:italic> and <ce:italic>Clostridia</ce:italic> possess unique carbohydrate-active enzyme families, such as GH177 and CBM91, which enable xylan and arabinan degradation. <ce:italic>Bacilli</ce:italic> were abundant with the GH1 and GH3 families, which are critical for cellulose degradation. Overall, the <ce:italic>Firmicutes</ce:italic> classes showed low overlap in substrate use and functional profiles, confirming significant niche differentiation. Our results demonstrate that <ce:italic>Firmicutes</ce:italic> occupy distinct dietary niches supporting insights into bacterial coexistence in anaerobic digestion systems.","PeriodicalId":258,"journal":{"name":"Bioresource Technology","volume":"30 1","pages":""},"PeriodicalIF":11.4,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142841262","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}