Article
Chemistry, Multidisciplinary
Ying Liu, Yizhi Sheng
Summary: Iron plays a vital role in the assembly process of heterotrophic denitrifying microbial communities. Results reveal that higher Fe concentration induces more clustered microbial interactions. The balance between deterministic and stochastic processes of these communities is controlled by iron.
ENVIRONMENTAL CHEMISTRY LETTERS
(2021)
Article
Microbiology
Marie Abadikhah, Miguel de Celis Rodriguez, Frank Persson, Britt-Marie Wilen, Anne Farewell, Oskar Modin
Summary: The study investigated the composition and performance of microbial communities in different types of MECs, revealing that the initial colonization of electrogenic bacteria was stochastic. Negative correlations were found between different putatively electrogenic Deltaproteobacteria on the anode, possibly due to competition for the conductive anode surface. The cathode communities were dominated by hydrogen-utilizing taxa and had a lower proportion of negative correlations.
FRONTIERS IN MICROBIOLOGY
(2022)
Article
Environmental Sciences
Hao Wang, Hui Yun, Xiaodan Ma, Minghan Li, Mengyuan Qi, Ling Wang, Zhiling Li, Shuhong Gao, Yu Tao, Bin Liang, Aijie Wang
Summary: This study investigated the bioelectrochemical catabolism of the emerging contaminant TCC in domestic wastewater and its subsequent mineralization. The microbial degradation of TCC to chloroanilines and CO2 was achieved through the adaptation of specific microbial communities. The addition of TCC enhanced the synergistic effect within functional microbial communities. This study provides a new approach for the efficient removal of TCC from domestic wastewater using a green and low-carbon bioelectrochemical method.
ENVIRONMENTAL RESEARCH
(2022)
Article
Environmental Sciences
Yingping Long, Yongwen Ma, Jinquan Wan, Yan Wang, Min Tang, Hao Fu, Jianye Cao
Summary: In this study, the denitrification efficacy of corn cob hydrolysate (CCH) was compared and analyzed with that of glucose and acetate. It was found that CCH had a high TN removal rate and low effluent COD during stable operation. The microbial community analysis showed a higher abundance of certain bacteria in the CCH stage, and the carbon metabolism of CCH was similar to that of acetate.
ENVIRONMENTAL RESEARCH
(2023)
Article
Engineering, Environmental
Maria Jose De la Fuente, Rodrigo De la Iglesia, Laura Farias, Holger Daims, Michael Lukumbuzya, Ignacio T. Vargas
Summary: This study successfully enriched marine denitrifying microorganisms by applying a specific potential, -260 mV (vs. Ag/AgCl), demonstrating significantly higher nitrate removal compared to other conditions. The polarized electrodes were found to work as external electron donors for nitrate reduction, indicating the feasibility of enriching denitrifying microorganisms without the need for a culture medium, exogenous electron donor, or previously enriched inoculum.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Agricultural Engineering
Xiao-Li Yang, Qi Wang, Tao Li, Han Xu, Hai-Liang Song
Summary: Bioelectrochemical characteristics play a critical role in antibiotics removal and ARGs control in microbial fuel cell (MFC). The current intensity has a stronger effect on the system than the anode potential. Appropriate regulation of bio-electrochemical characteristics is essential for improving electricity generation and controlling ARGs.
BIORESOURCE TECHNOLOGY
(2022)
Article
Engineering, Environmental
Jiayi Tong, Li Cui, Danqi Wang, Xin Wang, Zhaokun Liu
Summary: In this study, the membrane aerated biofilm reactor (MABR) was used to degrade high concentrations of PNP without external carbon sources. The MABR showed a strong shockproof ability and achieved high removal efficiencies of PNP and COD. The high-throughput sequencing results revealed the presence of CPR bacteria, which played a key role in the degradation of high concentrations of PNP.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Environmental Sciences
Ruochen Zhi, Jian Deng, Yuling Xu, Miaoping Xu, Shuohong Zhang, Xinhui Han, Gaihe Yang, Chengjie Ren
Summary: In this study, a metagenomics approach was used to investigate the composition and diversity of microbial P genes along a 45-year recovery sequence of Robinia pseudoacacia on the Loess Plateau. The results showed that afforestation significantly increased the diversity of P cycling genes and led to clear differences in community composition. These findings highlight the role of afforestation in enhancing microbial P cycling genes and improving soil P availability.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Environmental Sciences
Mukadasi Abudureheman, Nuerla Ailijiang, Anwar Mamat, Yuran Feng, Chaoyue He, Miao Pu
Summary: In this study, an anaerobic-aerobic coupling system with intermittent electrical stimulation was used to improve the biodegradation of fluoroquinolone-containing synthetic wastewater. The optimal voltage and hydraulic retention time had a significant effect on the removal performance of fluoroquinolones. The combination of anaerobic-anodic and aerobic-cathodic chambers showed higher removal efficiency for fluoroquinolones. The electrical stimulation selectively enriched certain bacteria related to biodegradation, antibiotic resistance, and nitrification.
ENVIRONMENTAL RESEARCH
(2023)
Article
Agricultural Engineering
Mickael Rimboud, Luc Etcheverry, Mohamed Barakat, Wafa Achouak, Alain Bergel, Marie-Line Delia
Summary: Microbial anodes and oxygen reducing microbial cathodes were designed separately and then combined to form two-compartment microbial fuel cells. The MFCs produced significant power density in a hypersaline medium, with Desulfuromonas sp. identified as key species of the anodes. The efficiency of the cathodes was linked to the development of a redox system centered at a certain voltage and the presence of specific phylogenetically linked bacteria. Comparing different MFCs' performances suggested that maintaining longer polarization at a certain voltage could promote growth of specific bacteria on the cathode and enhance MFC performance.
BIORESOURCE TECHNOLOGY
(2021)
Article
Environmental Sciences
Zechong Guo, Lu Zhang, Min-Hua Cui, Aijie Wang
Summary: In this study, the microbial communities of electrode in bioelectrochemical systems treating azo dye wastewater with different electron donors were investigated. The results showed significant differences in microbial community structures among the three groups, and domestic wastewater as an electron donor increased the diversity of the microbial community and enhanced the stability of the electrode biofilm.
Article
Engineering, Environmental
Zhaozhao Wang, Shuhao Zhu, Simin Li, Jun Ma, Jing Zhang, Peng Gao, Lina Yan
Summary: A comparative study showed that particle size affects nitrate removal efficiency and microbial community composition. Granules with a particle size of 1.0-1.5 mm exhibited superior structural stability and denitrification capacity.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Environmental Sciences
Zhiguo Li, Linyang Li, Shujie Xia, Runhua Zhang, Runqin Zhang, Peng Chen, Junfeng Pan, Yi Liu
Summary: The study found that the interaction between K and N fertilizer affects N2O emissions and associated microbes. The combined application of K and nitrate significantly reduces N2O emissions, while the combined application of K and ammonia significantly increases N2O emissions.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Chemistry, Multidisciplinary
Ravineet Yadav, P. Chiranjeevi, Sukrampal Yadav, Ramandeep Singh, Sunil A. Patil
Summary: Microbial electrosynthesis is a promising technology for converting CO2 and renewable power into chemicals, with the potential to reduce carbon emissions. This study investigates the use of gaseous N-2 as a nitrogen source in acetate microbial electrosynthesis, successfully fixing N-2 and CO2 and avoiding the use of traditional fixed nitrogen. This method has the potential to effectively reduce CO2 emissions while producing significant amounts of acetate.
JOURNAL OF CO2 UTILIZATION
(2022)
Article
Biodiversity Conservation
Minjie Hu, Yixun Le, Jordi Sardans, Ruibing Yan, Yi Zhong, Dongyao Sun, Chuan Tong, Josep Penuelas
Summary: Accelerated sea-level rise can lead to salinization of freshwater wetlands, but little is known about the effects of salinity on soil phosphorus cycling and microbial genes involved. A field experiment was conducted to investigate the impact of salinity on soil microbial communities and their regulation of phosphorus availability in coastal wetlands. Salinity was found to be positively correlated with phosphorus availability, with different patterns observed between freshwater and brackish wetlands. The microbial communities involved in phosphorus cycling were more diverse and abundant in brackish wetlands, and salinity altered their composition. Metagenomic analysis revealed higher abundance of functional genes related to phosphorus solubilization and mineralization in coastal soils. The findings suggest that moderate increases in salinity can enhance phosphorus availability through the regulation of microbial community and phosphorus cycling.
GLOBAL CHANGE BIOLOGY
(2023)
Article
Agricultural Engineering
Yinping Xiang, Meiying Jia, Rui Xu, Jialu Xu, Lele He, Haihao Peng, Weimin Sun, Dongbo Wang, Weiping Xiong, Zhaohui Yang
Summary: This study investigated the impact of the non-antibiotic pharmaceutical carbamazepine on antibiotic resistance genes (ARGs) during anaerobic digestion. The results showed that carbamazepine induced the enrichment of ARGs and increased the abundance of bacteria carrying these genes. It also facilitated microbial aggregation and intercellular communication, leading to an increased frequency of ARGs transmission. Moreover, carbamazepine promoted the acquisition of ARGs by pathogens and elevated their overall abundance.
BIORESOURCE TECHNOLOGY
(2024)
Review
Agricultural Engineering
Weixin Zhao, Tianyi Hu, Hao Ma, Dan Li, Qingliang Zhao, Junqiu Jiang, Liangliang Wei
Summary: This review summarizes the effects and potential mechanisms of biochar on microbial behavior in AD systems. The addition of biochar has been found to promote microbial colonization, alleviate stress, provide nutrients, and enhance enzyme activity. Future research directions include targeted design of biochar, in-depth study of microbial mechanisms, and improved models.
BIORESOURCE TECHNOLOGY
(2024)
Review
Agricultural Engineering
Christina Karmann, Anna Magrova, Pavel Jenicek, Jan Bartacek, Vojtech Kouba
Summary: This review assesses nitrogen removal technologies in reject water treatment, highlighting the differences in environmental impacts and economic benefits. Partial nitritation-anammox shows potential for economic benefits and positive environmental outcomes when operated and controlled properly.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Wei-Hao Huang, Ying-Ju Chang, Duu-Jong Lee
Summary: This study modified pinecone biochar with layered double hydroxide (LDH) to enhance its adsorption capacity for heavy metal and phosphate ions. The LDH-biochar showed significantly improved adsorption capacities for Pb2+ and phosphate, and a slight increase for Cu2+ and Co2+. The LDH layer enhanced the adsorption through various mechanisms.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Chao Song, Fanfan Cai, Shuang Yang, Ligong Wang, Guangqing Liu, Chang Chen
Summary: This paper developed a machine learning model to predict the biochemical methane potential during anaerobic digestion. Model analysis identified lignin content, organic loading, and nitrogen content as key attributes for methane production prediction. For feedstocks with high cellulose content, early methane production is lower but can be improved by prolonging digestion time. Moreover, lignin content exceeding a certain value significantly inhibits methane production.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Sang Min Lee, Ju Young Lee, Ji-Sook Hahn, Seung-Ho Baek
Summary: This study successfully developed an efficient platform strain using Yarrowia lipolytica for the bioconversion of renewable resources into adipic acid, achieving a remarkable increase in production level.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Sefkan Kendir, Matthias Franzreb
Summary: This study presents a novel approach using magnetic separation to efficiently harvest freshwater microalgae, Chlorella vulgaris. By combining pH-induced calcium phosphate precipitation with cheap natural magnetite microparticles, harvesting efficiencies up to 98% were achieved in the model medium.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Ishaq Kariim, Ji-Yeon Park, Wajahat Waheed Kazmi, Hulda Swai, In-Gu Lee, Thomas Kivevele
Summary: The impact of reaction temperature, residence time, and ethanol: acetone on the energy compositions and yield enhancement of biocrudes was investigated. The results showed that under appropriate conditions, biocrudes with high energy and low oxygen content can be obtained, indicating a high potential for utilization.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Xiyue Zhang, Xiyao Li, Liang Zhang, Yongzhen Peng
Summary: Intermittent aeration is an innovative approach to enhance nitrogen removal in low carbon-to-nitrogen ratio municipal sewage, providing an efficient strategy for the continuous plug-flow AOA process.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Xu Yang, Mahmoud Mazarji, Mengtong Li, Aohua Li, Ronghua Li, Zengqiang Zhang, Junting Pan
Summary: This study investigated the impact of magnetite on the nitrogen cycle of pig manure biostabilisation. The addition of magnetite increased N2O emissions and decreased NH3 emissions during composting. It also increased the total nitrogen content but should be considered for its significant increase in N2O emissions in engineering practice.
BIORESOURCE TECHNOLOGY
(2024)
Review
Agricultural Engineering
Ty Shitanaka, Haylee Fujioka, Muzammil Khan, Manpreet Kaur, Zhi-Yan Du, Samir Kumar Khanal
Summary: The market value of microalgae has exponentially increased in the past two decades, thanks to their applications in various industries. However, the supply of high-value microalgal bioproducts is limited due to several factors, and strategies are being explored to overcome these limitations and improve microalgae production, thus increasing the availability of algal-derived bioproducts in the market.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Martin Kerner, Thorsten Wolff, Torsten Brinkmann
Summary: The efficiency of using enriched CO2 from flue gas for large-scale production of green microalgae has been studied. The results show that the use of membrane devices and static mixers can effectively improve the CO2 recovery rate and maintain the suitable pH and temperature during cultivation, achieving a more economical and sustainable microalgae production.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Rui Ma, Ji Li, Rd Tyagi, Xiaolei Zhang
Summary: This review summarizes the microorganisms capable of using CO2 and CH4 to produce PHAs, illustrating the production process, factors influencing it, and discussing optimization techniques. It identifies the challenges and future prospects for developing economically viable PHAs production using GHGs as a carbon source.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Bing Wang, Peng Zhang, Xu Guo, Xu Bao, Junjie Tian, Guomin Li, Jian Zhang
Summary: The addition of zeolite in the co-composting of chicken manure and straw significantly reduced the emissions of ammonia and N2O, and increased the nitrate content. Zeolite also promoted the abundance of nitrification genes and inhibited the expression of denitrification genes.
BIORESOURCE TECHNOLOGY
(2024)
Article
Agricultural Engineering
Rohit Dey, Franziska Ortiz Tena, Song Wang, Josef Martin Messmann, Christian Steinweg, Claudia Thomsen, Clemens Posten, Stefan Leu, Matthias S. Ullrich, Laurenz Thomsen
Summary: This study investigated the operation of a 1000L microalgae-based membrane photobioreactor system for continuous secondary wastewater treatment. The research focused on a green microalgae strain called Desmodesmus sp. The study aimed to understand key trends and optimization strategies by conducting experiments in both summer and winter seasons. The findings showed that maintaining low cell concentrations during periods of light inhibition was beneficial for nutrient uptake rates. Effective strategies for enhancing algae-based wastewater treatment included cell mass recycling and adjusting dilution rates based on light availability.
BIORESOURCE TECHNOLOGY
(2024)