Article
Engineering, Environmental
Qian Wang, Qianming Miao, Ke Huang, Yeqi Lin, Tong Wang, Xinyue Bai, Qiyong Xu
Summary: This study systematically investigated the dynamic development of clogging in simulated LCSs and found that clogging accumulated in all components of the LCS during a 215-day period. Spatial variations in clogging components were observed along the leachate flow, with the geotextile being severely clogged due to bio-clogging.
Article
Agriculture, Dairy & Animal Science
Alfonso Zecconi, Gabriele Meroni, Valerio Sora, Roberto Mattina, Micaela Cipolla, Lucio Zanini
Summary: Mastitis is a costly disease that requires early detection to reduce negative effects and maximize cure chances. A new marker (PLCC) calculated by multiplying SCC and DSCC has shown to have the lowest cost in identifying udder quarters at risk for intramammary infection. This diagnostic approach can be cost-effective, especially when the prevalence of major pathogens exceeds 6-10%.
Article
Green & Sustainable Science & Technology
Peng Wu, Guihua Liu, Xiaobin Li, Zhihong Peng, Qiusheng Zhou, Tiangui Qi, Yilin Wang, Leiting Shen
Summary: This study investigated the feasibility of removing organics through foam flotation in synthetic Bayer liquor and verified its effectiveness in industrial production. Low molecular weight organics showed higher removal rates in the solution, while elevated temperatures reduced their removal rates. The enrichment of organics in the foam was mainly attributed to small bubbles, high TOC concentrations, and multilayer adsorption.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Statistics & Probability
Huiying Mao, Ryan Martin, Brian J. J. Reich
Summary: This article presents a new model-free nonparametric spatial prediction approach based on conformal prediction, which is applicable to complex spatial statistics problems. Numerical experiments demonstrate that the proposed prediction method has higher efficiency and validity for large datasets in various spatial settings.
JOURNAL OF THE AMERICAN STATISTICAL ASSOCIATION
(2022)
Article
Environmental Sciences
Zhigang Yang, Yunfei Li, Ziyi Zhan, Yang Song, Lijie Zhang, Yan Jin, Linxu Xu, Jin Wang, Xue Shen, Liming Liu, Feiyong Chen
Summary: This study introduced a flow electrode microbial desalination cell (FE-MDC) with activated carbon and carbon nanotubes as the electrode to enhance electron harvesting. The FE-MDC achieved higher electricity energy and columbic efficiency compared to the conventional MDC, leading to improved salt and COD removal efficiencies. Electrochemical and bacterial community analyses confirmed the positive impact of the flow electrode on the system performance and bacterial activity. A continuous operation mode was established, demonstrating the promising practical application of the FE-MDC technology.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Liya Fu, Changyong Wu, Jian'e Zuo, Yuexi Zhou, Jin Yang
Summary: The presence of residual ozone significantly enhanced the removal of organics in biological processes, with a stimulating effect observed at low dosages but inhibitory effects at high dosages. Proper control and management of residual ozone in the integrated O3-BAF are crucial for optimizing microbial communities and activity.
Article
Engineering, Environmental
Anjishnu Biswas, S. K. Patidar
Summary: The performance of a circular flow constructed wetland system for organics and total phosphorus removal was assessed in this study, and step feeding and effluent recirculation strategies were found to improve the system's performance.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Food Science & Technology
Evelin Korcz, Laszlo Varga, Zoltan Kerenyi
Summary: This study established a correlation between total bacterial count (TBC) and exopolysaccharide (EPS) production in a specific Streptococcus thermophilus strain, showing that EPS biosynthesis is growth-related and can be monitored through TBC for quantification purposes.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2021)
Article
Environmental Studies
Jui-Hsiang Lo, Qun-Zhan Huang, Shao-Yiu Hsu, Yi-Zhih Tsai, Hong-Yen Lin
Summary: This study proposes a diagram to analyze soil clogging and validates its effectiveness through numerical simulations. Experimental data presented with the diagram show cracking on the soil surface and gradual development of clogging at the bottom of the lysimeter.
Review
Environmental Sciences
Timothy O. Ajiboye, Opeyemi A. Oyewo, Damian C. Onwudiwe
Summary: The co-existence of heavy metals and organics in industrial effluents poses potential health risks and ecological harm, necessitating the simultaneous removal of these pollutants. Technologies such as adsorption, ion exchange, photo-catalysis, and coagulation have been used for this purpose, with their success dependent on water matrices and treatment media. This review critically examines the advantages, limitations, and mathematical modeling of these technologies for concurrent removal of organics and heavy metals in contaminated systems.
Article
Engineering, Environmental
Wei Li, Xiuting Sui, Wenhao Li, Jiayu Li, Shuai Zhao, Wanying Zhao, Hengqi Wang, Nan Li, Hai Zhang, Ping Guo, Jinying Chen, Minzhu Wang, Yu Zhang
Summary: Removing nitrogen and sulfur pollutants simultaneously by biological methods is challenging when the wastewater contains low-concentration organics. The metabolism pathways of sulfur and nitrogen in the low-concentration organics environment were proposed and the optimal conditions for efficient desulfurization-denitrification were identified. The bacterial community structure of suspended sludge and biofilms was significantly affected by the influent low-concentration organics.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Green & Sustainable Science & Technology
Anjishnu Biswas, Saswati Chakraborty
Summary: Wastewater treatment with energy recovery is a major concern in environmental engineering research nowadays. The current study focuses on the removal of organics and fecal coliforms in domestic wastewater using three different reactors. The results show that the planted CW-MFC reactor achieved the highest COD removal efficiency, while the planted constructed wetland and unplanted CW-MFC reactors had similar BOD removal efficiencies. The presence of plants and electrodes played a crucial role in the removal of pathogens and COD from wastewater.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Engineering, Chemical
Yao Li, Yukai Zong, Xin Jin, Kun Guo, Shiyi Hu, Pengkang Jin, Xiaochang Wang
Summary: This study demonstrated that organics modified by ozonation can be captured in real time by micro-bubble flocs mediated by the interaction among ozone, Al species, and other organics using the hybrid ozonation-coagulation process. The real-time capture strategy during the HOC process can increase organics removal efficiency and broaden the ozone dosing range. The formation of Al-organic complexes with C-O-Al coordination bonds protects the modified organics from further oxidation by ozone.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Review
Engineering, Environmental
Jun Li, Lingxiao Yang, Bo Lai, Chao Liu, Yuxin He, Gang Yao, Naiwen Li
Summary: This review primarily focuses on the latest progress in Fe-based heterogeneous catalysts for advanced oxidation processes, highlighting their potential for organic pollutants removal and introducing various activation systems and toxicity evaluation methods. Challenges in future research and practical applications are also discussed.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Social Sciences, Interdisciplinary
Da Gao, Linfang Tan, Xinlin Mo, Ruochan Xiong
Summary: This study investigates the spatial spillover effects of carbon emission trading schemes (CETs) on urban total factor carbon emission efficiency (TFCEE) in prefecture-level cities in China using a spatial difference-difference (SDID) model. A mediating effect model is also constructed to explore the channels through which CETs influence carbon emission efficiency. The results show that urban CETs can significantly improve both the urban itself and the surrounding areas’ carbon emission efficiency, and this improvement is achieved through optimizing labor resource allocation and strengthening green technology innovation. Furthermore, the promotion effect of implementing CETs on carbon emission efficiency is stronger in the eastern cities of China compared to those in central and western China.
Article
Engineering, Environmental
Xiqing Wang, Atif Muhmood, Tao Lyu, Renjie Dong, Hongtao Liu, Shubiao Wu
Summary: This study investigated the evolutionary dynamics of humic acid (HA) in chicken manure and corn stover in the anaerobic digestion (AD) process under different temperature conditions. It was found that the evolution mechanisms of HA differed between the two substrates, and higher temperature accelerated the humification process of HA. The concurrent decomposition and re-polymerization of HA during AD had both positive and negative effects on CH4 production.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Environmental Sciences
Gang Li, Jiang Zhang, Huan Li, Ruichen Hu, Xiaolong Yao, Ying Liu, Yuguang Zhou, Tao Lyu
Summary: This study focused on the simultaneous treatment of livestock wastewater and high-quality biodiesel production using microalgae technology. Higher microalgal biomass production was observed in the original piggery effluent medium, while microalgae grown in anaerobically-digested effluent had a higher lipid content, which is favorable for biodiesel production. The N/P ratio in the original effluent was closer to the optimal ratio for microalgae growth compared to the anaerobically-digested effluent, indicating potential for sustainable livestock waste management.
Article
Biotechnology & Applied Microbiology
Zhigang Huang, Jiang Zhang, Minmin Pan, Yuhang Hao, Ruichen Hu, Wenbo Xiao, Gang Li, Tao Lyu
Summary: This study proposed a new workflow for biofuel generation from microalgae biomass through lipid extraction and pyrolysis of defatted microalgae residues, and assessed its effects. The results indicated that lipid extraction and pyrolysis temperature had significant impacts on the pyrolysis products, and an optimal pyrolysis temperature was suggested to achieve the twin goals of lowering emission of pollutants and elevating energy products.
BIOCHEMICAL ENGINEERING JOURNAL
(2022)
Article
Environmental Sciences
Rui Xu, Tao Lyu, Lijing Wang, Yuting Yuan, Meiyi Zhang, Mick Cooper, Robert J. G. Mortimer, Queping Yang, Gang Pan
Summary: This study successfully developed an adsorbent made from coal fly ash modified with lanthanum for phosphorus recapture from water. The adsorbent showed high efficiency in phosphorus adsorption and had a minimal impact on the concentrations of other pollutants in water.
Article
Environmental Sciences
Xiqing Wang, Tao Lyu, Renjie Dong, Shubiao Wu
Summary: The study found that the electron transfer capacity (ETC) of HAs increased during anaerobic digestion process at both mesophilic (671-1479 mu mol gHA-1) and thermophilic (774-1506 mu mol gHA-1) conditions. The ETC was positively correlated with bacterial community in hydrolytic and acidogenic phases, but negatively correlated with archaeal community in methanogenic phase. Furthermore, HAs formed under thermophilic conditions had a greater influence on key enzyme activities than those formed under mesophilic conditions.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Green & Sustainable Science & Technology
Gang Li, Ruichen Hu, Nan Wang, Tenglun Yang, Fuzhuo Xu, Jiale Li, Jiahui Wu, Zhigang Huang, Minmin Pan, Tao Lyu
Summary: This study investigated a strategy of adjusting wastewater nutrient composition for microalgae cultivation and biofuel production, resulting in increased biomass production and improved biofuel quality, as well as reduced environmental impacts.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Environmental Sciences
Yuncheng Wu, Wei Tian, Yang Zhang, Wei Fan, Fang Liu, Jiayin Zhao, Mengmeng Wang, Yu Liu, Tao Lyu
Summary: This study investigated the use of novel nanobubble technology and ozone oxidation method to enhance the ozonization of ammonia. The results showed that the use of nanobubbles significantly improved the removal of ammonia compared to the control group, with a higher kinetic rate constant.
Article
Engineering, Environmental
Wei Fan, Yuhang Li, Tao Lyu, Jia'ao Yu, Zhen Chen, Peter Jarvis, Yang Huo, Dan Xiao, Mingxin Huo
Summary: Bubble aeration is widely used in water/wastewater treatment, but it consumes a lot of energy due to its low gas utilization rate. The application of micro-nanobubbles (MNB) can significantly increase gas utilization by increasing the relative surface area and gas-liquid mass transfer efficiency. In this study, a dynamic model was developed to describe the bubble behavior in water and provide guidance for upgrading bubble aeration system. The model was validated with experimental data for microbubbles, but further study is needed for nanobubble aeration.
Article
Green & Sustainable Science & Technology
Shaoyuan Bai, Xin Wang, Yang Zhang, Fang Liu, Lulu Shi, Yanli Ding, Mei Wang, Tao Lyu
Summary: This study examined the removal of nutrients, antibiotics, and ARGs in domestic sewage using constructed wetlands filled with coke. The results showed that the system filled with coke had higher antibiotics removal efficiency compared to the one filled with quartz sand. The presence of wetland plants also improved the removal of nutrients and tetracyclines. Additionally, the study highlighted the importance of substrate selection and wetland plants in altering microbial communities and structures in constructed wetlands.
Article
Biotechnology & Applied Microbiology
Gang Li, Yuhang Hao, Tenglun Yang, Wenbo Xiao, Minmin Pan, Shuhao Huo, Tao Lyu
Summary: Cultivating microalgae using modified wastewater and obtaining defatted microalgal residues through pyrolysis has the potential to increase renewable energy production and reduce environmental impact.
BIOENGINEERING-BASEL
(2022)
Review
Biotechnology & Applied Microbiology
Gang Li, Fuzhuo Xu, Tenglun Yang, Xiqing Wang, Tao Lyu, Zhigang Huang
Summary: Anaerobic digestion technology is considered the most effective method for treating a distiller due to its environmental benefits, resource utilization, and low cost. However, microbial activity poses some limitations to this process. This paper critically reviews the microorganisms involved in the anaerobic digestion of a distiller, particularly focusing on the archaea community. The effects of operating parameters such as pH, temperature, and TAN on microbial activity and the process are discussed. Understanding microbial activity can further enhance the maturity of anaerobic treatment technology for a distiller. Additionally, the synergistic effect of different substrates and recent literature on the use of microorganisms to purify a distiller are briefly discussed for better purification and harm reduction. Further research is needed to explore the interactions between microorganisms and establish the mechanisms of microbial interactions in different environments.
FERMENTATION-BASEL
(2023)
Article
Environmental Sciences
Bangguo Wang, Lijing Wang, Wenxi Cen, Tao Lyu, Peter Jarvis, Yang Zhang, Yuanxun Zhang, Yinghui Han, Lei Wang, Gang Pan, Kaili Zhang, Wei Fan
Summary: This study investigates the feasibility and mechanisms of a chemical-free nanobubble-based AOP for treating organic micropollutants in water. The results show that the oxygen nanobubble AOP has a significantly higher removal efficiency compared to air and nitrogen nanobubbles. The treatment performance is not affected by pH and the presence of ions. Higher initial concentrations of the micropollutant lead to slower treatment processes, but similar removal performance is achieved in the end. The presence of organic matter reduces the removal rate of the micropollutant. The results have practical feasibility for water and wastewater treatment.
ENVIRONMENTAL POLLUTION
(2024)
Review
Materials Science, Multidisciplinary
Gang Li, Wenbo Xiao, Tenglun Yang, Tao Lyu
Summary: Microalgae carbon dioxide (CO2) fixation technology is an effective way of environmental protection and resource utilization, which can be combined with wastewater and flue gas treatment, biofuel production, etc., to achieve high economic benefits. However, there are still challenges such as poor photosynthetic efficiency, high input cost, and large capital investment in industrial application. Therefore, further research is needed to improve microalgae carbon sequestration capacity and develop strategies for industrialization.
C-JOURNAL OF CARBON RESEARCH
(2023)
Article
Engineering, Environmental
Tao Lyu, Randy Williams, Benjamin Exton, Robert C. Grabowski
Summary: This study assessed the feasibility of using floating treatment wetlands (FTWs) as a nature-based solution (NbS) for treating propylene glycol-contaminated water and quantified different removal pathways. The results showed that microbial biodegradation and plant uptake were the major pathways for glycol removal, and FTWs were found to be an environmentally friendly and effective NbS for addressing glycol-contaminated water.
WATER SCIENCE AND TECHNOLOGY
(2023)
Article
Environmental Sciences
Othman Al-Mashaqbeh, Layal Alsalhi, Lana Salaymeh, Tao Lyu
Summary: This study investigated the use of nature-based solutions for treating pharmaceutical wastewater in Jordan. A pilot-scale hybrid treatment wetland equipped with local zeolite was employed and achieved high removal efficiencies for various pollutants. The study demonstrated the feasibility of using nature-based solutions for treating pharmaceutical wastewater and highlighted the need for further research to optimize this strategy.
WATER AND ENVIRONMENT JOURNAL
(2023)
