Article
Environmental Sciences
Xuejiao Yin, Md Hasibur Rahaman, Wenbo Liu, Jacek Mainia, Jun Zhai
Summary: Through incubation in lab-scale reactors for over 220 days, metabolic pathways of nitrogen removal in autotrophic and organotrophic anammox bacteria were identified, with the organotrophic reactor showing better nitrogen removal efficiency and Candidatus J. caeni dominating in it.
ENVIRONMENTAL RESEARCH
(2021)
Article
Engineering, Environmental
Lara Sindhu, Kangle Niu, Xiaolin Liu, Shou-Qing Ni, Xu Fang
Summary: This study found that the addition of suitable Fe2+ in anammox system can significantly improve nitrogen removal efficiency and rate, as well as enhance the extracellular polymeric substance levels. Fe2+ also activates the central metabolism of anammox bacteria to promote nitrogen removal. Furthermore, Fe2+ addition increases the relative abundance of specific bacteria, affecting the efficiency of ammonium and nitrite removal.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Article
Engineering, Environmental
Ziting Guo, Lijing Bai, Ronggui Li, Jingchao Wang, Jin Li
Summary: Xylitol was found to enhance nitrogen removal from saline wastewater at low temperature by adding an optimal dose of 0.3 mM, while high-dosage xylitol interfered with nitrogen removal efficiency. The remodified logistic model was suitable for analyzing and predicting the nitrogen removal process with xylitol addition.
WATER ENVIRONMENT RESEARCH
(2021)
Article
Environmental Sciences
Shuyan Yin, Jin Li, Huiyu Dong, Zhimin Qiang
Summary: In this study, marine anammox bacteria were enriched using marine sediments, providing insights into the nitrogen removal properties of MAB in seawater-based wastewater treatment under low temperature conditions.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Engineering, Environmental
Buqing Chen, Yujie Qin, Chenglong Wu, Zhiju Liu, Lan Yang, Siyuan Gong, Shaohong Zheng
Summary: This study assessed the effect of glucose in a DEAMOX reactor, and found that adding glucose can promote nitrogen removal efficiency while maintaining a synergic relationship between denitrification microorganisms and anammox microorganisms during the DEAMOX process.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Environmental Sciences
Yuyue Huang, Wei Li, Jie Gao, Fang Wang, Wei Yang, Le Han, Dunmei Lin, Bolin Min, Yue Zhi, Khara Grieger, Jingmei Yao
Summary: This study reveals that microplastics have impacts on ecosystem functions mediated by benthic biota, especially at higher concentrations, indicating adverse effects on microbial nitrogen removal mediated by macroinvertebrates. The findings emphasize the importance of understanding the comprehensive impacts of microplastics on the functioning in freshwater ecosystems.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Engineering, Environmental
Yabing Meng, Depeng Wang, Zhong Yu, Qingyun Yan, Zhili He, Fangang Meng
Summary: This study investigates the cooccurring mechanisms and functional differentiation of four Candidatus Brocadia species enriched in a swine wastewater treatment system. The analysis reveals that these species can utilize different nitrogen compounds for nitrogen removal.
FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING
(2023)
Article
Agricultural Engineering
Yan Feng, Bo Wang, Yongzhen Peng, Xiyao Li, Qiong Zhang
Summary: A continuous plug-flow reactor was used to treat municipal wastewater, achieving stable nitrification and denitrification through different zones and conditions. Results showed that the PN-SAED process had high nitrogen removal efficiency and contribution rate, making it a promising method for nitrogen removal.
BIORESOURCE TECHNOLOGY
(2022)
Article
Environmental Sciences
Jiapeng Wu, Yiguo Hong, Xiaohan Liu, Yaohao Hu
Summary: This study investigated the structure and function of denitrifiers and anammox bacteria in coastal sediment cores collected from Daya Bay in winter and summer, revealing depth-related variations in their activities and abundances. While denitrifiers showed higher activities and abundances in surface sediments, anammox bacteria became more dominant in subsurface sediments. The availability of electronic acceptors strongly influenced nitrogen loss activities in subsurface sediments, highlighting their role as a sink for buried nitrogen.
ENVIRONMENTAL POLLUTION
(2021)
Article
Engineering, Environmental
Zhaopeng Qu, Jin Li, Zhi Hu, Wenzong Liu, Aijie Wang
Summary: Currently, conventional biological nitrogen removal processes face challenges in removing ammonium from saline wastewater. This study successfully utilized marine anammox bacteria in a microbial electrolytic cell to convert NH4+-N to N2. In addition, the application of voltage increased microbial diversities at the electrode surface and promoted the formation of electrode biofilm.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Xinyi Zou, Mengjie Ma, Jiachen Zhu, Qun Zhang, Qianfei Cao, Sami Khasraw Hamid, Chongjun Chen
Summary: The study found that salinity, represented by SO42-, has an impact on the anammox reaction. Increasing concentrations of SO42- decreased the removal efficiency of NH4+-N and NO2--N, as well as affected the sludge characteristics and microbial community structure.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Agricultural Engineering
Hong Chen, Hong Wang, Guanlong Yu, Ying Xiong, Haipeng Wu, Min Yang, Rong Chen, Enzhe Yang, Changbo Jiang, Yu-You Li
Summary: By controlling dissolved oxygen and aeration rate, stable performance can be maintained under oxygen-limiting conditions. The activation of ammonia oxidation bacteria (AOB), dominated anammox bacteria (AMX), suppression of NOB, and control of heterotrophic bacteria (HB) played a major role in achieving long-term stable operation in the biofilms.
BIORESOURCE TECHNOLOGY
(2021)
Review
Engineering, Environmental
Mengjie Ma, Qianfei Cao, Adams Mabruk, Junxiang Xie, Peng Wu, Wenru Liu, Chongjun Chen
Summary: The anammox process is an effective nitrogen removal technology, but its growth rates are low and sensitive to operational and environmental conditions. Recent studies have shown that the addition of exogenous substances can improve the performance and microbial community of anammox.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Environmental Sciences
Wei Zhang, Xin Zhou, Xiwei Cao, Shuhan Li
Summary: This study introduces low intensity ultrasound into anaerobic sequencing batch biofilm reactors (ASBBRs) to enhance anammox nitrogen removal from nitrogen-rich wastewater. The study demonstrates a close correlation between nitrogen removal and shifts in transformation and intensity of spectrum peaks, as well as changes in the anammox consortium. The research provides a viable and promising acceleration strategy for anammox-based process.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Review
Engineering, Environmental
Quan Zhang, Xijun Xu, Ruochen Zhang, Bo Shao, Kaili Fan, Lei Zhao, Xiaoming Ji, Nanqi Ren, Duu-Jong Lee, Chuan Chen
Summary: This review summarizes the recent advances and characteristics of the mixed/mixotrophic nitrogen removal (MixNR) process guided by sulfur-driven autotrophic denitrification (SDAD) and anammox. It discusses the functional microorganisms in different MixNR systems, sheds light on metabolic mechanisms and microbial interactions, and highlights the importance of MixNR for carbon reduction in the BNR process. Knowledge gaps and future research directions that may facilitate the practical application of the MixNR process are also emphasized.
Article
Biotechnology & Applied Microbiology
Xiao Wang, Duntao Shu, Hong Yue
APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
(2016)
Article
Engineering, Environmental
Duntao Shu, Yanling He, Hong Yue, Qingyi Wang
CHEMICAL ENGINEERING JOURNAL
(2016)
Article
Chemistry, Multidisciplinary
Duntao Shu, Yanling He, Hong Yue, Junling Gao, Qingyi Wang, Shucheng Yang
Article
Agricultural Engineering
Duntao Shu, Baogang Zhang, Yanling He, Gehong Wei
BIORESOURCE TECHNOLOGY
(2018)
Article
Agricultural Engineering
Duntao Shu, Hong Yue, Yanling He, Gehong Wei
BIORESOURCE TECHNOLOGY
(2018)
Article
Environmental Sciences
Duntao Shu, Jianhua Guo, Baogang Zhang, Yanling He, Gehong Wei
SCIENCE OF THE TOTAL ENVIRONMENT
(2019)
Article
Agricultural Engineering
Hong Yue, Yanyan Zhang, Yanling He, Gehong Wei, Duntao Shu
BIORESOURCE TECHNOLOGY
(2019)
Article
Environmental Sciences
Duntao Shu, Yanqing Guo, Baogang Zhang, Chunfang Zhang, Joy D. Van Nostrand, Yanbing Lin, Jizhong Zhou, Gehong Wei
Summary: Microbial community succession in dryland ecosystems on the Loess Plateau of China was studied over a 30+ year period. Abundant and rare microbial subcommunities were found to shift during succession, with the rare biosphere driving changes in beta diversity. Phylogenetic changes were associated with functional traits, indicating diversity-related selection. The assembly of abundant taxa was regulated by dispersal homogenizing and ecological drift, while rare subcommunities were affected by homogeneous and variable selection processes. pH and nitrogen content were key drivers of microbial community assembly, with the rare biosphere playing a crucial role in soil processes such as C, N, and S cycling.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Soil Science
Chunfang Zhang, Gehong Wei, Duntao Shu
Summary: This study examined how restoration strategies affect bacterial communities and functions in landscaped and undeveloped riparian green spaces. The results showed that landscaped systems had higher soil nutrients and moisture, promoting denitrification and anaerobic ammonium oxidation, while undeveloped systems were more resource-limited, affecting bacterial diversity and nitrogen processes differently.
APPLIED SOIL ECOLOGY
(2022)
Article
Environmental Sciences
Hong Yue, Samiran Banerjee, Conghui Liu, Qiyong Ren, Wu Zhang, Baogang Zhang, Xiaohong Tian, Gehong Wei, Duntao Shu
Summary: This study investigated the niche specialization and environmental prevalence of nitrifying communities, and their importance for nitrification rate and crop yield. The results showed that different types of fertilizers had distinct influences on the beta-diversity and niche breadth of nitrifying communities. Crop yield was closely associated with specific nitrifying bacteria depending on the type of fertilization.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Weili Cui, Ruochen Li, Zhen Fan, Likun Wu, Xining Zhao, Gehong Wei, Duntao Shu
Summary: Deciphering the ecological role of soil communities in maintaining ecosystem functions is crucial for soil biodiversity conservation. This study investigated the niche differentiation and contributions to elemental cycles of abundant and rare microbiota in intensively fertilized agroecosystems. The results showed that rare taxa had narrower niches and weaker phylogenetic signals compared to abundant species. The assembly of abundant subcommunity was influenced by dispersal limitation and undominated processes, while the assembly of rare subcommunity was dominated by homogeneous selection process. The rare biosphere made significant contributions to soil carbon and nitrogen cycling. These findings improve our understanding of microbial diversity in response to agricultural fertilization and highlight the importance of rare taxa in sustaining agricultural ecosystem functions.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Soil Science
Chunfang Zhang, Gehong Wei, Duntao Shu
Summary: Understanding the assembly mechanism of fungal communities is crucial for conserving and managing mycobiomes. However, the factors causing a decline in fungal community size are not well understood. This study used ITS sequencing data to characterize soil fungal assembly processes at different community levels. The results showed that rhizospheric communities had reduced fungal richness during the developmental transitions of soybeans. The assembly processes were primarily controlled by dispersal limitation in both the bulk soil and rhizosphere, with variable selection and drift playing secondary roles. This study enhances our understanding of fungal community assembly and provides insights into the maintenance mechanisms of metacommunity stability.
APPLIED SOIL ECOLOGY
(2023)
Article
Environmental Sciences
Qi Bei, Tiantian Yang, Chengyao Ren, Enxiao Guan, Yunchao Dai, Duntao Shu, Wenxiang He, Haixia Tian, Gehong Wei
Summary: In the natural forest soils of Taibai Mountain, soil pH is the key factor determining the distribution and abundance of microorganisms, and the arsenic content and pH of the soil determine the distribution of arsenic-metabolizing microorganisms. Arsenic-related functional genes are ubiquitous in forest soils, with the arsB gene having the highest relative abundance, followed by arsC, aoxB, arrA, arsM, and arxA genes. The distribution of arsenic-related functional genes is decoupled from the corresponding bacterial community. Soil pH, organic matter, and altitude jointly determine the diversity of arsenic-related functional genes in the two slopes of Taibai Mountain, with soil pH being a key factor.
ENVIRONMENTAL RESEARCH
(2023)
Article
Environmental Sciences
Zhen Fan, Ruocheng Li, Enxiao Guan, Haiqing Chen, Xining Zhao, Gehong Wei, Duntao Shu
Summary: Soil aggregates are vulnerable to agricultural intensification and are important for soil health and biogeochemical cycling. Fertilization practices impact the abundance of diazotrophic community behind soil aggregates, with organic fertilization promoting nifH gene abundance while chemical fertilization shows contrasting patterns. Organic fertilization also increases the complexity of microbial networks and the robustness of diazotrophic communities. Furthermore, the diversity and abundance of diazotrophic communities in soil microaggregates play a role in determining crop yields.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Microbiology
Hong Yue, Wenjie Yue, Shuo Jiao, Hyun Kim, Yong-Hwan Lee, Gehong Wei, Weining Song, Duntao Shu
Summary: This study investigated the rhizosphere microbiomes of domesticated and wild accessions of tetraploid wheat in China. Plant domestication was found to affect the composition and metabolic functions of rhizosphere microbiomes, which play an important role in plant growth. The study also identified key microbial taxa associated with plant morphology traits. These findings provide valuable insights into plant-microbiome interactions and crop improvement in sustainable agriculture.
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)
