Article
Engineering, Environmental
Chongjun Chen, Ying Jiang, Xinyi Zou, Menglei Guo, He Liu, Minhua Cui, Tian C. Zhang
Summary: This study investigated how particle size affects the physicochemical characteristics, nitrogen conversion activity, and microbial community in anammox sludge granules. The results showed that larger particle sizes correlated with higher wet density, settling velocity, and removal efficiency of ammonium and nitrite. High-throughput sequencing revealed that microbial richness and diversity decreased and then increased with increasing particle size. Granular sludge with a particle size of 1.0-1.5 mm had the largest EPS content and PN/PS ratio. To maintain high nitrogen removal performance, particle sizes of 1.5-2.0 mm should be selected.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
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
XiaoTong Wang, Hong Yang, Yang Su, XuYan Liu, JiaWei Wang
Summary: The study found that red AnGS had higher biomass content, EPS, and activity compared to brown AnGS, with red AnGS exhibiting nitrification and brown AnGS exhibiting denitrification. Immobilization improved the contribution rate of Anammox and involved different regulatory mechanisms.
BIORESOURCE TECHNOLOGY
(2021)
Article
Engineering, Environmental
C. Polizzi, T. Lotti, A. Ricoveri, R. Campo, C. Vannini, M. Ramazzotti, D. Gabriel, G. Munz
Summary: This study highlights the importance of controlling mineral precipitation on granular sludge systems treating wastewaters prone to inert precipitation to ensure long-term stability. Severe mineral precipitation on the granules' surface can lead to deteriorated reactor performance and biomass activity, with potential mechanisms including substrate diffusion limitation, insufficient mixing, and biofilm erosion. Gravimetric selection proved effective in restoring process performance affected by mineral precipitation.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Review
Environmental Sciences
Anna Christine Trego, Simon Mills, Gavin Collins
Summary: Anaerobic digestion is recognized as a sustainable method for waste management, producing methane-rich biogas. Different specialized granules, including anaerobic and aerobic granules, have opened up new opportunities in wastewater treatment and resource recovery biotechnology. Each type of granule has unique characteristics, biochemical processes, and microbial community compositions.
CRITICAL REVIEWS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2021)
Article
Agricultural Engineering
Junxiang Xie, Qianfei Cao, Tianyi An, Adams Mabruk, Jiawei Xie, Yaofeng Chang, Menglei Guo, Chongjun Chen
Summary: This study investigated the impact of two small particle size biochars on the properties of Anammox granular sludge. The results showed that peach biochar had better nitrogen removal performance under complex organic carbon conditions.
BIORESOURCE TECHNOLOGY
(2022)
Article
Environmental Sciences
Da Kang, Ping Zheng, Wenji Li, Dongdong Xu, Wenda Chen, Chao Pan
Summary: This study investigates the stratification patterns of anammox granular sludge bed (GSB) and its relationship with microbial activity and community under different nitrogen loading rates (NLRs). Results show that the particle size distribution of GSB is significantly correlated with the nitrogen removal rate (NRR) of the anammox system. The microbial community tends to coverage at high NLR. Additionally, the particle size distribution patterns of GSB may serve as a potential auxiliary indicator to reflect microbial activity and community.
ENVIRONMENTAL RESEARCH
(2022)
Review
Environmental Sciences
Mabruk Adams, Junxiang Xie, Arthur wendinso Judicael Kabore, Yaofeng Chang, Jiawei Xie, Menglei Guo, Chongjun Chen
Summary: This article discusses the application of Anammox granular sludge, including its properties, influencing factors, limitations, cultivation, and research progress. The granulation of Anammox sludge is considered to be the most feasible option for large-scale Anammox application.
CRITICAL REVIEWS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2022)
Article
Green & Sustainable Science & Technology
Junxiang Xie, Tianyi An, Adams Mabruk, Yayi Wang, Jianfang Wang, Chongjun Chen, Tian C. Zhang
Summary: Different biochars were added to the reactors, resulting in faster start-up of Anammox and improved structural and functional characteristics of the granular sludge.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Engineering, Environmental
Lijian Zhao, Chengyuan Su, Anliu Wang, Cuiping Fan, Xinyue Huang, Feiqian Li, Ruting Li
Summary: This study found that sodium acetate had the highest efficiency in removing dissolved organic nitrogen in an aerobic granular sludge system. Analysis of microbial communities showed that members of Paracoccus and Anaerorhabdus were less in glucose and sucrose groups. Additionally, the sodium acetate group had the highest abundance of membrane transport function genes.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Article
Environmental Sciences
Ya-Fei Cheng, Zheng-Zhe Zhang, Wen-Jie Ma, Gui-Feng Li, Bao-Cheng Huang, Nian-Si Fan, Ren-Cun Jin
Summary: The introduction of biodegradable carbon sources affects the performance of the mainstream anammox process. Glucose and acetate reduce the contribution of anammox to nitrogen removal. Granule-based systems have advantages in maintaining functional balance, but targeted biomass retention strategies are needed.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Mabruk Adams, Junxiang Xie, Yaofeng Chang, Arthur Wendinso Judicael Kabore, Chongjun Chen
Summary: The Anammox process has been widely studied for optimizing performance in biological nitrogen removal from wastewaters. The addition of 5% coconut biochar led to the fastest startup with 96% ammonium removal efficiency in 46 days, while different biochar types resulted in varied microbial communities in the setups.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Menglei Guo, Ying Jiang, Junxiang Xie, Qianfei Cao, Qun Zhang, Adams Mabruk, Chongjun Chen
Summary: The effects of different chemical oxygen demand (COD) concentrations on anammox granular sludge with Bamboo Charcoal (BC) addition were evaluated. The results showed that BC addition significantly increased TN removal efficiency and promoted the biological characteristics of granular sludge. High throughput sequencing and metagenomic sequencing analysis revealed the impact of BC addition on bacterial diversity and functional genes.
JOURNAL OF ENVIRONMENTAL SCIENCES
(2022)
Review
Engineering, Environmental
Xiaochuan Ran, Mingda Zhou, Tong Wang, Weigang Wang, Sheena Kumari, Yayi Wang
Summary: This article provides an overview of nitrogen-removal granular sludge (NRGS) technology, with a focus on its characterization. The integrated nitrogen transformation pathways and performance of NRGS in treating various wastewaters are discussed. NRGS properties are categorized and corresponding characterization technologies are presented. Future prospects for understanding and applying NRGS technology are proposed.
Article
Agricultural Engineering
Zhe Liu, Jingwen Wang, Shumin Zhang, Yiwen Hou, Jiaxuan Wang, Min Gao, Xingdu Chen, Aining Zhang, Yongjun Liu, Zhihua Li
Summary: The formation characteristics of algal-bacteria granular sludge (ABGS) under different light intensities were investigated. It was found that stronger light favored the improvement of sludge characteristics and nutrient removal performances during the growing stage, while weaker light ensured stable operation of the system during the mature stage. The dominant bacterial genus in mature ABGS cultured under low light intensity was Zoogloe, and different algal genus were dominant.
BIORESOURCE TECHNOLOGY
(2023)
Article
Green & Sustainable Science & Technology
Junxiang Xie, Menglei Guo, Jiawei Xie, Yaofeng Chang, Adams Mabruk, Tian C. Zhang, Chongjun Chen
Summary: This study investigated the effects of adding different biochars on alleviating COD inhibition in anaerobic ammonium oxidation (anammox) reactors and the performance and properties of anammox granular sludge (AnGS). Results showed that the addition of biochar improved nitrogen removal efficiency and enhanced the stability of AnGS granules. The TN removal efficiency increased and the particle size distribution of AnGS granules became more uniform under different biochar addition conditions. Furthermore, the stability of AnGS granules was not significantly affected by COD concentration.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Environmental Sciences
Menglei Guo, Ying Jiang, Junxiang Xie, Qianfei Cao, Qun Zhang, Adams Mabruk, Chongjun Chen
Summary: The effects of different chemical oxygen demand (COD) concentrations on anammox granular sludge with Bamboo Charcoal (BC) addition were evaluated. The results showed that BC addition significantly increased TN removal efficiency and promoted the biological characteristics of granular sludge. High throughput sequencing and metagenomic sequencing analysis revealed the impact of BC addition on bacterial diversity and functional genes.
JOURNAL OF ENVIRONMENTAL SCIENCES
(2022)
Article
Agricultural Engineering
Tianyi An, Yaofeng Chang, Junxiang Xie, Qianfei Cao, Yuxue Liu, Chongjun Chen
Summary: Magnetic biochar is found to be important for improving the electron transfer capacity of microorganisms and can enhance the nitrogen removal efficiency in waste-water treatment systems. Magnetic biochar has higher capacitance and conductivity compared to pyrolytic biochar, and it significantly influences the structure of microbial communities.
BIORESOURCE TECHNOLOGY
(2022)
Retraction
Agricultural Engineering
Junxiang Xie, Qianfei Cao, Tianyi An, Adams Mabruk, Jiawei Xie, Yaofeng Chang, Menglei Guo, Chongjun Chen
BIORESOURCE TECHNOLOGY
(2022)
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
Agricultural Engineering
Jiawei Xie, Xinyi Zou, Yaofeng Chang, He Liu, Min-Hua Cui, Tian C. Zhang, Jiajian Xi, Chongjun Chen
Summary: A pilot-scale bioelectrochemical coupled anaerobic digestion (BES-AD) system was constructed and tested for the treatment of membrane manufacturing wastewater. The results showed increased BOD5/COD ratio and significant degradation of pollutants. Spatial enrichment of microorganisms in the electrode modules was observed, with fermenters and degraders mostly enriched at the bottom and electroactive bacteria mostly enriched at the top. The economical construction and operation cost of the BES-AD system further highlights its importance.
BIORESOURCE TECHNOLOGY
(2023)
Article
Engineering, Electrical & Electronic
Yifu Huang, Reed Hopkins, David Janosky, Ying-Chen Chen, Yao-Feng Chang, Jack C. Lee
Summary: This article extensively studies the influence of temperature instability on resistive memory switching in potential neuromorphic computing applications. The evaluation results show that ambient temperature can degrade the accuracy of neural networks.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2022)
Article
Engineering, Electrical & Electronic
Ying-Chen Chen, Chao-Cheng Lin, Chang-Hsien Lin, Yao-Feng Chang
Summary: In this work, an engineered submicrometer-scale bilayer stacking in via-type one-time programmable (OTP) memory and self-rectified resistive switching memory (ReRAM) is demonstrated. The study achieves co-existing memory functionality (OTP and ReRAM) while reducing the scaling requirement. It also proposes an electrode-engineered approach for low programming voltage and extensively studies the impact of various factors on the integration capability.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2023)
Article
Green & Sustainable Science & Technology
Junxiang Xie, Tianyi An, Adams Mabruk, Yayi Wang, Jianfang Wang, Chongjun Chen, Tian C. Zhang
Summary: Different biochars were added to the reactors, resulting in faster start-up of Anammox and improved structural and functional characteristics of the granular sludge.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Environmental Sciences
Jiawei Xie, Xinyi Zou, Yaofeng Chang, Junxiang Xie, He Liu, Min-hua Cui, Tian C. Zhang, Chongjun Chen
Summary: A hydrolysis-acidification combined MEC system with inexpensive stainless-steel and carbon cloth cathodes was used for the treatment of real textile-dyeing wastewater. The system showed promising results in terms of parameter optimization, spectral analysis, microbial succession, and removal of refractory organics.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Editorial Material
Chemistry, Analytical
Yao-Feng Chang
Article
Chemistry, Multidisciplinary
Yifu Huang, Yuqian Gu, Sivasakthya Mohan, Andrei D. Dolocan, Nicholas Ignacio, Shanmukh Kutagulla, Kevin Matthews, Alejandra Londono-Calderon, Yao-Feng Chang, Ying-Chen H. Chen, Jamie T. Warner, Michael C. Pettes, Jack Lee, Deji Akinwande
Summary: It has been found that the reliability and endurance of MoS2-based memristors can be improved by reducing the top electrode deposition rate and increasing the thickness of MoS2 films. Experimental results show that these optimization methods can increase the reliability to 92% and improve the average DC cycling endurance by approximately 16 times. Additionally, an effective switching layer model has been proposed to understand the convergence of switching metrics and the improvement in reliability related to fabrication configuration.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Yifu Huang, Yuqian Gu, Yao-Feng Chang, Ying-Chen Chen, Deji Akinwande, Jack C. Lee
Summary: By conducting simulation experiments, it was found that the thickness of the 2-D material does not affect the endurance of multilayer 2-D RRAM devices. Instead, the formation and collapse of the effective switching layer were identified as the main factors determining endurance.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2023)
Review
Environmental Sciences
Mabruk Adams, Junxiang Xie, Arthur wendinso Judicael Kabore, Yaofeng Chang, Jiawei Xie, Menglei Guo, Chongjun Chen
Summary: This article discusses the application of Anammox granular sludge, including its properties, influencing factors, limitations, cultivation, and research progress. The granulation of Anammox sludge is considered to be the most feasible option for large-scale Anammox application.
CRITICAL REVIEWS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2022)
Article
Green & Sustainable Science & Technology
Lars odegaard Bentsen, Narada Dilp Warakagoda, Roy Stenbro, Paal Engelstad
Summary: This study investigates uncertainty modeling in wind power forecasting using different parametric and non-parametric methods. Johnson's SU distribution is found to outperform Gaussian distributions in predicting wind power. This research contributes to the literature by introducing Johnson's SU distribution as a candidate for probabilistic wind forecasting.
JOURNAL OF CLEANER PRODUCTION
(2024)
Article
Green & Sustainable Science & Technology
Xing Liu, Qiuchen Wang, Yunhao Wen, Long Li, Xinfang Zhang, Yi Wang
Summary: This study analyzes the characteristics of process parameters in three lean gas ethane recovery processes and establishes a prediction and multiobjective optimization model for ethane recovery and system energy consumption. A new method for comparing ethane recovery processes for lean gas is proposed, and the addition of extra coolers improves the ethane recovery. The support vector regression model based on grey wolf optimization demonstrates the highest prediction accuracy, and the multiobjective multiverse optimization algorithm shows the best optimization performance and diversity in the solutions.
JOURNAL OF CLEANER PRODUCTION
(2024)
Article
Green & Sustainable Science & Technology
Cairong Song, Haidong Yang, Xian-Bing Meng, Pan Yang, Jianyang Cai, Hao Bao, Kangkang Xu
Summary: The paper proposes a novel deep learning-based prediction framework, aTCN-LSTM, for accurate cooling load predictions. The framework utilizes a gate-controlled multi-head temporal convolutional network and a sparse probabilistic self-attention mechanism with a bidirectional long short-term memory network to capture both temporal and long-term dependencies in the cooling load sequences. Experimental results demonstrate the effectiveness and superiority of the proposed method, which can serve as an effective guide for HVAC chiller scheduling and demand management initiatives.
JOURNAL OF CLEANER PRODUCTION
(2024)
Article
Green & Sustainable Science & Technology
Zhe Chen, Xiaojing Li, Xianli Xia, Jizhou Zhang
Summary: This study uses survey data from the Loess Plateau in China to evaluate the impact of social interaction on the adoption of soil and water conservation (SWC) technology by farmers. The study finds that social interaction increases the likelihood of farmers adopting SWC, and internet use moderates this effect. The positive impact of social interaction on SWC adoption is more pronounced for farmers in larger villages and those who join cooperative societies.
JOURNAL OF CLEANER PRODUCTION
(2024)
Article
Green & Sustainable Science & Technology
Chenghua Zhang, Yunfei Yan, Kaiming Shen, Zongguo Xue, Jingxiang You, Yonghong Wu, Ziqiang He
Summary: This paper reports a novel method that significantly improves combustion performance, including heat transfer enhancement under steady-state conditions and adaptive stable flame regulation under velocity sudden increase.
JOURNAL OF CLEANER PRODUCTION
(2024)
