Article
Agricultural Engineering
Jishao Jiang, Yang Wang, Dou Yu, Guifen Zhu, Zhiguo Cao, Guangxuan Yan, Yunbei Li
Summary: The addition of garbage enzyme, pelelith, and biochar can reduce NH3 emissions and increase NO3N content during the composting of sewage sludge, leading to an increase in TN content. These additives also enhance Nase, cellulase, and FDA activities, as well as the abundance of nifH gene, with biochar showing the largest increase. The additions also influence the succession of N-fixing bacteria and increase the abundance of Proteobacteria, especially enhancing the sensitivity of N-fixing bacteria to environmental variables.
BIORESOURCE TECHNOLOGY
(2021)
Article
Agricultural Engineering
Jishao Jiang, Yang Wang, Dou Yu, Rui Hou, Xiaonan Ma, Jiaqi Liu, Zhiguo Cao, Ke Cheng, Guangxuan Yan, Chunyan Zhang, Yunbei Li
Summary: The combination of garbage enzyme and biochar has positive effects on TOC degradation, humification, and fungal succession during sewage sludge composting.
BIORESOURCE TECHNOLOGY
(2022)
Article
Environmental Sciences
Liusheng Lei, Jie Gu, Xiaojuan Wang, Zilin Song, Jing Yu, Jia Wang, Xiaoxia Dai, Wenya Zhao
Summary: This study found that adding MS and PPM significantly reduced NH3 and N2O emissions, while PPG slightly increased N2O emissions. Different functional bacteria played key roles in nitrification and denitrification during different composting stages. PPM obtained the greatest reductions in NH3 and N2O release via the regulation of environmental variables, nitrogen functional genes, and the bacterial community.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Agricultural Engineering
Shuchi Zhang, Jingli Wang, Xu Chen, Jiaxi Gui, Yue Sun, Donglei Wu
Summary: This study investigated the impact of different aeration frequencies on industrial-scale composting of food waste, finding that aeration frequency influences oxygen uptake rate, spatial distribution, bacterial community succession, and compost maturity acceleration by adjusting aeration strategies.
BIORESOURCE TECHNOLOGY
(2021)
Article
Agricultural Engineering
Jianfeng Bao, Yuanfei Lv, Mingxiang Qv, Zhuo Li, Tianrui Li, Shuangxi Li, Liandong Zhu
Summary: Different initial carbon-to-nitrogen ratios during pig manure composting resulted in variations in TN retention and nitrogen loss. Additional straw acted as a bulking agent to increase TN retention, and modifying microbial community structure could be a potential strategy to reduce ammonium nitrogen loss.
BIORESOURCE TECHNOLOGY
(2022)
Article
Agricultural Engineering
Yumin Duan, Mukesh Kumar Awasthi, Huanhuan Wu, Jianfeng Yang, Zelin Li, Xinhua Ni, Jiatao Zhang, Zengqiang Zhang, Huike Li
Summary: This study aimed to evaluate the coexistence of bacterial and fungal diversity and their correlation with enzymatic activity in response to biochar. The results showed that appropriate amendment of biochar enriched bacterial diversity but decreased fungal diversity. Biochar addition also enhanced enzymatic activities, with a more complex correlation with bacterial community than fungal community.
BIORESOURCE TECHNOLOGY
(2022)
Article
Agricultural Engineering
Zhiming Xu, Wen Liang, Xiu Zhang, Xu Yang, Shunxi Zhou, Ronghua Li, Asad Syed, Ali H. Bahkali, Mukesh Kumar Awasthi, Zengqiang Zhang
Summary: The objective of this study was to investigate the impact of different proportions of magnesite (MS) addition on nitrogen transformation and bacterial community dynamics during pig manure composting. The results showed that MS treatments increased the abundance of certain bacteria groups and improved the metabolic functionality of associated microorganisms, leading to enhanced nitrogen retention and reduced nitrogen loss. Among the different proportions, 10% MS had the most significant influence on composting by increasing Total Kjeldahl Nitrogen and decreasing NH3 emissions. This study provides a more ecologically sound and economically viable method for reducing nitrogen loss during composting.
BIORESOURCE TECHNOLOGY
(2023)
Article
Agricultural Engineering
Xu Zhang, Shenzhou Li, Wanting Cheng, Yue Zhao, Hongyang Cui, Xinyu Xie, Junqiu Wu, Zimin Wei, Yan Liu
Summary: This study found that oxytetracycline affects nitrogen transformation and bacterial diversity during chicken manure composting, leading to a decrease in NH4+-N to NO3--N conversion. 16S rRNA sequencing revealed a shift in core microorganisms, with the emergence of bacteria capable of inhibiting nitrogen transformation.
BIORESOURCE TECHNOLOGY
(2021)
Article
Agricultural Engineering
Liqin Wang, Xue Wang, Yangyang Song, Lihua Sun, Xiaomeng Chen, Junqiu Wu, Caihong Song, Yue Zhao
Summary: This study confirmed the role of inhibitors addition, ATP and MA, in nitrogen availability during rice straw composting. The results showed that inhibitors addition slowed down ammonium and nitrate nitrogen mineralization rates and improved the retention of organic nitrogen components. The addition of inhibitors also altered bacterial community structure and enhanced conversion between nitrogen components, leading to improved compost quality.
BIORESOURCE TECHNOLOGY
(2022)
Article
Soil Science
Xiaohong Liu, Juan Wang, Lingli Wu, Li Zhang, Youbin Si
Summary: The study found that silver nanoparticles inhibited enzyme activity, nitrifying bacteria, amoA gene abundance, and the gross nitrification rate in the soil nitrogen cycle. Nitrogen transformation was also negatively impacted by silver nanoparticles, with the nitrification rate decreasing with increasing levels of AgNPs.
Article
Agricultural Engineering
Zhuangzhuang Liu, Zhiwei Yan, Gang Liu, Xinyu Wang, Jun Fang
Summary: This study examined the effects of adding FeSO4 and biochar to cattle manure and rice straw composts on nitrogen loss control genes, bacterial community, nitrification, and denitrification. Four treatments were established, with TG3 showing the best results in reducing nitrogen loss. TG3 also had a positive impact on the growth of specific bacteria and the nitrification process by increasing the abundance of certain genes. Therefore, adding biochar and FeSO4 can help mitigate nitrogen loss by regulating nitrification processes.
BIORESOURCE TECHNOLOGY
(2023)
Article
Energy & Fuels
Yong-Rui Pi, Mu -Tai Bao
Summary: Enzymes and characteristics of petroleum-degrading bacteria are crucial for crude oil biodegradation. The study reveals that Proteobacteria, Firmcutes, and other bacterial groups play a significant role in petroleum hydrocarbon degradation. Acinetobacter shows a strong correlation with the degradation of n-alkanes and PAHs. Additionally, functional categories related to carbohydrate and amino acid metabolism, xenobiotic biodegradation, and membrane transport are important in bacterial communities.
Article
Ecology
Jan-Hendrik Keet, Allan G. Ellis, Cang Hui, Ana Novoa, Johannes J. Le Roux
Summary: The study found that invasive nitrogen-fixing Australian Acacia trees altered soil chemistry and function in South Africa's Core Cape Subregion, increasing levels of nitrogen, carbon, and pH, as well as influencing the composition of soil bacterial communities.
Article
Environmental Sciences
Chang-Tang Chang, Suraj Negi, Aishwarya Rani, Allen H. Hu, Shu-Yuan Pan, Sunil Kumar
Summary: This study managed the food waste and soybean curd residue in Taiwan's National Ilan University using black soldier fly-aided co-composting. The results showed that the black soldier fly-aided co-composting effectively degraded organic matter and produced matured compost that met the standards.
ENVIRONMENTAL RESEARCH
(2022)
Article
Plant Sciences
Zaid Khan, Kangkang Zhang, Mohammad Nauman Khan, Junguo Bi, Kunmiao Zhu, Lijun Luo, Liyong Hu
Summary: The use of biochar can improve soil and plant enzymatic activities, enhance nutrient cycling and accumulation, and increase the utilization of inorganic fertilizer and crop growth. Combining biochar with nitrogen fertilizer can increase soil enzymatic activities and improve the activity of nitrogen metabolism-related enzymes in plants. The combination of 30 t ha(-1) biochar and 450 kg ha(-1) nitrogen fertilizer can promote rapeseed growth and yield, while 15 t ha(-1) biochar with 225 kg ha(-1) nitrogen fertilizer can improve nitrogen use efficiency.
FRONTIERS IN PLANT SCIENCE
(2022)
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)