Article
Environmental Sciences
Cong Li, Likui Feng, Jianjun Lian, Xiaoting Yu, Chunzhen Fan, Zhen Hu, Haiming Wu
Summary: This study investigated the effect of a static magnetic field on the purification efficiency and microbial mechanism in vertical flow constructed wetland systems for treating domestic wastewater. The results showed that the systems with magnetic field outperformed control systems in terms of treatment performance, and the activity of enzymes indicated the beneficial effects of the magnetic field on plant health. Additionally, the high ammonia monooxygenase activity in the magnetic field-treated systems suggested enhanced removal of ammonia. High-throughput sequencing results demonstrated that the magnetic field application enriched functional bacteria, which further accelerated pollutants transformation. These findings contribute to understanding pollutant removal processes and mechanisms in constructed wetlands with magnetic field application.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Agricultural Engineering
Mengni Tao, Yu Kong, Zhaoqian Jing, Qiusheng Jia, Zhengkai Tao, Yu-You Li
Summary: The microbial fuel cell-constructed wetland (MFC-CW) is effective for nitrogen removal in carbon constraint wastewater treatment. Wetland plants contribute to denitrification, and the bioenergy output is linearly related to influent COD. Key functional genera play a crucial role in nitrogen removal.
BIORESOURCE TECHNOLOGY
(2022)
Article
Engineering, Environmental
Rui Lu, Yuhua Chen, Junmei Wu, Disong Chen, Zhenbin Wu, Enrong Xiao
Summary: The hybrid system of constructed wetland and microbial fuel cell (CW-MFC) used as a biosensor is a new research focus with the advantage of resisting shock loading and enriching more electricigens. This study proposed a structural parameter S to evaluate the electrogenesis and biosensing performances of vertical flow CW-MFC biosensors. The results showed that all three biosensors achieved good monitoring for COD, and coulombic yield was a suitable response signal.
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
Environmental Sciences
Yonggang Yuan, Chunpeng Leng, Yunlong Zhou, Yue Yuan, Yunxia Niu, Runyu Xu, Huiyuan Zhong, Fuping Li, Hongxing Zhou, Hao Wang
Summary: This study investigated the impact of different concentrations of polyethylene microplastics on constructed wetland microbial fuel cells through a 360-day experiment. The results showed that the accumulation of polyethylene microplastics affected the pollutant removal efficiency and power generation performance of the system, as well as the composition and activity of the microbial community.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Engineering, Environmental
Yiting Chen, Jun Yan, Mengli Chen, Fucheng Guo, Tao Liu, Yi Chen
Summary: Constructed wetland-microbial fuel cells (CW-MFCs) were built to achieve simultaneous nitrogen removal and electricity generation using wetland plant litter fermentation broths as carbon sources. The addition of fermentation broths significantly improved nitrogen removal and voltage output. The study also identified acetic acid and humic acid in the fermentation broths, which increased the abundance of functional genes associated with nitrogen metabolism and electron transfer.
FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING
(2022)
Article
Environmental Sciences
Yun Zhang, Feng Liu, Yidong Lin, Lei Sun, Xinru Guo, Shuai Yang, Jinlong He
Summary: This study investigates the impact of planting plants and coupled microbial fuel cells (MFCs) on the decontamination capacity and purification mechanism of constructed wetlands (CWs). It was found that the combined system of planting plants and MFCs showed the highest pollutant removal efficiency, improving the area efficiency of the wetland system and fundamentally alleviating the disadvantage of large land footprint. High output voltages and power densities were recorded in the systems with MFCs, indicating their potential for enhancing wetland decontamination capacity. Additionally, anaerobic ammonia oxidizing bacteria were identified as key players in nitrogen removal in the system.
Review
Agricultural Engineering
Supriya Gupta, Pratiksha Srivastava, Sunil A. Patil, Asheesh Kumar Yadav
Summary: Constructed wetlands integrated with bioelectrochemical systems have been intensively researched for the past decade, with technologies like constructed wetland-microbial fuel cell showing advantages in efficient wastewater treatment, electricity generation, and recalcitrant pollutant removal. The implantation of these systems improves redox activities and electron flow balance, enhancing operational controllability but also presenting key challenges and potential applications.
BIORESOURCE TECHNOLOGY
(2021)
Article
Engineering, Environmental
Dan Xu, Lili Lin, Peng Xu, Yin Zhou, Enrong Xiao, Feng He, Zhenbin Wu
Summary: A novel constructed wetland-microbial fuel cell system with tidal flow operation showed enhanced efficiency in ammonia nitrogen removal, with the optimal operating strategy being a D/F ratio of 1:5. The bacterial communities in the system demonstrated high reoxygenation ability, leading to improved nitrification efficiency, as well as significant role of heterotrophic aerobic denitrification bacteria.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Article
Engineering, Environmental
Shentan Liu, Feifan Lu, Dengfei Qiu, Xiaojuan Feng
Summary: This study evaluated the effects of electrode arrangement and aquatic plant selection on the performance of single-chamber constructed wetland-microbial fuel cell (CW-MFC) in the treatment of wastewater containing Cr (VI). The results showed that proper electrode distance and suitable cathode area can significantly improve the removal efficiency of Cr (VI) and the power density of the cell. Various bacteria are involved in the reduction and removal of Cr (VI). Scirpus Validus exhibited the best overall performance.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Environmental Sciences
Houyun Yang, Jian Chen, Li Yu, Weihua Li, Xianhuai Huang, Qian Qin, Shuguang Zhu
Summary: Constructed wetland-microbial fuel cell system (CW-MFC) is an effective technology for domestic wastewater treatment and bioelectricity generation. This study investigated the influence of influent COD concentration, HRT, and external resistance on system performance and found the optimal operating conditions. The results showed that CW-MFC outperformed traditional CW system in terms of pollutant removal efficiency and bioelectricity production. The analysis of microbial community indicated that the enrichment of electroactive bacteria and denitrifying bacteria might contribute to the performance improvement of CW-MFC system.
ENVIRONMENTAL RESEARCH
(2022)
Review
Environmental Sciences
Bin Ji, Yaqian Zhao, Jan Vymazal, Ulo Mander, Rauno Lust, Cheng Tang
Summary: Embedding MFC into CW to form CW-MFC has the potential to obtain bioelectricity and a clean environment; bibliometric analysis shows research focuses on bioelectricity generation performance, mechanism study, refractory pollutants removal, and enhanced conventional contaminants removal; future research directions include exploring biochemical properties of electrochemically active bacteria, removal of emerging contaminants, biosensor development and scaling-up for real field application.
Article
Chemistry, Physical
Shentan Liu, Hongpu Xue, Mixue Wang, Xiaojuan Feng, Hyung-Sool Lee
Summary: This study evaluates the use of constructed wetland-microbial fuel cells (CW-MFC) as a sustainable solution for reducing greenhouse gas (GHG) emissions. The results show that carbon fiber felt (CFF) exhibits the lowest methane and nitrous oxide emissions among the selected cathode materials. Adjusting the influent pH from acidic to alkaline also reduces GHG emissions. However, the addition of nickel inhibits GHG emissions but decreases electricity generation. Additionally, a low carbon-to-nitrogen ratio reduces methane emissions, while a high ratio effectively inhibits nitrous oxide emissions.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Review
Environmental Sciences
Atieh Ebrahimi, Muttucumaru Sivakumar, Craig McLauchlan
Summary: Over the past decade, the CW-MFC technology has experienced rapid development, with research focusing on key design factors and their role in performance, providing a comprehensive framework for understanding the technology. The review identifies research gaps, offers design recommendations, and presents a taxonomy of all CW-MFC design parameters to aid future studies and users in comprehending CW-MFC technology.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Agronomy
Anita Jakubaszek
Summary: The study found that young plants in the rapid growth stage contain the highest levels of total nitrogen and total phosphorus, while the leaves of common reeds have a higher capacity for nitrogen phytoaccumulation. The surface layer of the filtration material in constructed wetland beds has the highest content of total nitrogen and total phosphorus, with accumulation decreasing with depth and outflow direction of sewage.
Article
Biotechnology & Applied Microbiology
Cheng Li, Luguang Wang, Hong Liu
APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
(2018)
Article
Thermodynamics
Ningshengjie Gao, Botong Qu, Zhenyu Xing, Xiulei Ji, Eugene Zhang, Hong Liu
Article
Agricultural Engineering
Luguang Wang, Stephanie Trujillo, Hong Liu
BIORESOURCE TECHNOLOGY
(2019)
Article
Environmental Sciences
Xiaoou Wang, Yimei Tian, Hong Liu, Xinhua Zhao, Sen Peng
SCIENCE OF THE TOTAL ENVIRONMENT
(2019)
Article
Agricultural Engineering
Luguang Wang, Fei Long, Wei Liao, Hong Liu
BIORESOURCE TECHNOLOGY
(2020)
Article
Engineering, Environmental
Keaton Larson Lesnik, Wenfang Cai, Hong Liu
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2020)
Article
Engineering, Environmental
Luguang Wang, Ye Chen, Fei Long, Lakhveer Singh, Stephanie Trujillo, Xiang Xiao, Hong Liu
CHEMICAL ENGINEERING JOURNAL
(2020)
Article
Agricultural Engineering
Lakhveer Singh, Andrew G. Miller, Luguang Wang, Hong Liu
Summary: Maintaining high current densities in microbial electrolysis cell (MEC) reactors is crucial for scaling-up. A novel 10 L MEC reactor with improved design and materials was developed to enhance current density and H2 recovery. The results showed that vertical electrode orientation promoted efficient fluid mixing, while separators and electrodes near reactor walls decreased current density.
BIORESOURCE TECHNOLOGY
(2021)
Article
Environmental Sciences
Xiaoou Wang, Jun Bai, Yimei Tian, Tao Wang, Xiaoxuan Zhou, Changping Zhang
Summary: The study found that the combination of natural ventilation and animal disturbance in constructed wetlands enhanced oxygen transfer, microbial activity, and removal of organics and nitrogen. This led to increased oxygen transfer rate, enzymatic activity, and removal loads of COD and NH3-N, ultimately improving overall nitrogen removal efficiency.
Article
Green & Sustainable Science & Technology
Fei Long, Joshua Fan, Weichao Xu, Hong Liu
Summary: This study used machine learning algorithms to predict the concentration and production of medium-chain carboxylic acids (MCCA). The results showed that the prediction accuracy was higher than 0.7 when using operational parameters only, and significantly improved when incorporating genomic data. The random forest model achieved the highest prediction accuracy when using operational parameters, genomic data, and the combined dataset. Hydraulic retention time and organic loading rate were identified as the main operational parameters affecting MCCA concentration and rate. Bacteroidales and Coriobacter-iales were found to be potential universal biomarkers for process monitoring.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Environmental Sciences
Huixin Wang, Xiaoou Wang, Meiyan Wang, Changping Zhang, Jiayin Li, Ming Xue, Weiyi Xia, Haijiao Xie
Summary: This study investigated the degradation and transformation of linear alkylbenzene sulfonates (LAS) in integrated constructed wetland-microbial fuel cell (CW-MFC) systems. Results showed that sodium dodecyl benzene sulfonate (SDBS) could improve the power output and reduce the internal resistance of CW-MFCs, but high concentration of SDBS had the potential to inhibit electricity generation and organics biodegradation due to its toxic effects. SDBS degradation in CW-MFCs involved alkyl chain degradation, desulfonation, and benzene ring cleavage, producing 19 intermediates. The bioaccumulation potential of SDBS was greatly reduced through the degradation by CW-MFCs, reducing its environmental risk.
Article
Green & Sustainable Science & Technology
Xiaoou Wang, Yu Zhang, Changping Zhang, Jiayin Li, Ming Xue, Weiyi Xia
Summary: This study investigated the influence of hydraulic retention time (HRT) and electrode configuration on the flow field characteristics of constructed wetland-microbial fuel cell coupling systems (CW-MFCs). The results showed that HRT was the most influential factor, and anode spacing had a significant impact on the hydraulic performance. Cathode position and size did not have a statistically significant effect on the system's hydraulic performance. Optimizing the electrode configuration helped improve the flow field, facilitating electricity generation and pollutants' removal in CW-MFCs.
Article
Environmental Sciences
Toshimi Nakajima, Mao Kuragano, Makoto Yamada, Ryo Sugimoto
Summary: This study compared the contribution of submarine groundwater discharge (SGD) to river nutrient budgets at nearshore and embayment scales, and found that SGD-derived nutrients become more important at larger spatial scales.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Fan Liu, Lei Zhang, Chongyang Zhang, Ziguang Chen, Jingguang Li
Summary: NO2 emissions from wall-mounted gas stoves used for household heating have become a significant source of indoor pollution in Chinese urban areas. The high indoor concentration of NO2 poses potential health risks to residents. It is urgently necessary to establish relevant regulations and implement emission reduction technologies to reduce NO2 emissions from wall-mounted gas stoves.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Letter
Environmental Sciences
Hans Peter H. Arp, Raoul Wolf, Sarah E. Hale, Sivani Baskaran, Juliane Gluege, Martin Scheringer, Xenia Trier, Ian T. Cousins, Harrie Timmer, Roberta Hofman-Caris, Anna Lennquist, Andre D. Bannink, Gerard J. Stroomberg, Rosa M. A. Sjerps, Rosa Montes, Rosario Rodil, Jose Benito Quintana, Daniel Zahn, Herve Gallard, Tobias Mohr, Ivo Schliebner, Michael Neumann
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Philomina Onyedikachi Peter, Binessi Edouard Ifon, Francois Nkinahamira, Kayode Hassan Lasisi, Jiangwei Li, Anyi Hu, Chang-Ping Yu
Summary: This study investigates the relationship between dissolved organic matter (DOM) and Rare Earth Elements (REEs) in sediments from Yundang Lagoon, China. The results show four distinct fluorescent components, with protein-like substances being the most prevalent. Additionally, the total fluorescence intensity and LREE concentrations exhibit a synchronized increase from Outer to Inner to Songbai Lake core sediments. The findings demonstrate a strong correlation between DOM content and pollution levels.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Surya Gupta, Pasquale Borrelli, Panos Panagos, Christine Alewell
Summary: The objective of this study is to incorporate soil hydraulic properties into the erodibility factor (K) of USLE-type models. By modifying and improving the existing equations for soil texture and permeability, the study successfully included information on saturated hydraulic conductivity (Ksat) into the calculation of K factor. Using the Random Forest machine learning algorithm, two independent K factor maps with different spatial resolutions were generated. The results show that the decrease in K factor values has a positive impact on the modeling of soil erosion rates.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Jesmin Akter, Wendy J. M. Smith, Yawen Liu, Ilho Kim, Stuart L. Simpson, Phong Thai, Asja Korajkic, Warish Ahmed
Summary: The choice of workflow in wastewater surveillance has a significant impact on SARS-CoV-2 concentrations, while having minimal effects on HF183 and no effect on HAdV 40/41 concentrations. Certain components in the workflow can be interchangeable, but factors such as buffer type, chloroform, and homogenization speed can affect the recovery of viruses and bacteria.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Yu Luo, Xueting Yang, Diwei Wang, Hongmei Xu, Hongai Zhang, Shasha Huang, Qiyuan Wang, Ningning Zhang, Junji Cao, Zhenxing Shen
Summary: Atmospheric PM2.5, which can generate reactive oxygen species (ROS), is associated with cardiorespiratory morbidity and mortality. The study found that both the mass concentration of PM2.5 and the DTT activity were higher during the heating season than during the nonheating season. Combustion sources were the primary contributors to DTT activity during the heating season, while secondary formation dominated during the nonheating season. The study also revealed that biomass burning had the highest inherent oxidation potential among all sources investigated.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Erin L. Murphy, Leah R. Gerber, Chelsea M. Rochman, Beth Polidoro
Summary: Plastic pollution has devastating consequences for marine organisms. This study uses a trait-based framework to develop a vulnerability index for marine mammals, seabirds, and sea turtles in Hawai'i. The index ranks 63 study species based on their vulnerability to macroplastic pollution, providing valuable information for species monitoring and management priorities.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Kenji Maurice, Amelia Bourceret, Sami Youssef, Stephane Boivin, Liam Laurent-Webb, Coraline Damasio, Hassan Boukcim, Marc-Andre Selosse, Marc Ducousso
Summary: Growing pressure from climate change and agricultural land use is destabilizing soil microbial community interactions. Little is known about microbial community resistance and adaptation to disturbances, hindering our understanding of recovery latency and implications for ecosystem functioning. This study found that anthropic disturbance and natural disturbance have different effects on the topology and stability of soil microbial networks.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Yunhao Li, Yali Feng, Haoran Li, Yisong Yao, Chenglong Xu, Jinrong Ju, Ruiyu Ma, Haoyu Wang, Shiwei Jiang
Summary: Deep-sea mining poses a serious threat to marine ecosystems and human health by disturbing sediment and transmitting metal ions through the food chain. This study developed a new regenerative adsorption material, OMN@SA, which effectively removes metal ions. The adsorption mechanism and performance of the material for metal ion fixation were investigated.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Antonio Medici, Margherita Lavorgna, Marina Isidori, Chiara Russo, Elena Orlo, Giovanni Luongo, Giovanni Di Fabio, Armando Zarrelli
Summary: Valsartan, a widely used antihypertensive drug, has been detected in high concentrations in surface waters due to its unchanged excretion and incomplete degradation in wastewater treatment plants. This study investigated the degradation of valsartan and identified 14 degradation byproducts. The acute and chronic toxicity of these byproducts were evaluated in key organisms in the freshwater trophic chain.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Jiang Lin, Lianbao Chi, Qing Yuan, Busu Li, Mingbao Feng
Summary: This study investigated the photodegradation behavior and product formation of two representative pharmaceuticals in simulated estuary water. The study found that the formed transformation products of these pharmaceuticals have potential toxicity on marine organisms, including oxidative stress and damage to cellular components.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Hua Fang, Dongdong Jiang, Ye He, Siyi Wu, Yuehong Li, Ziqi Zhang, Haoting Chen, Zixin Zheng, Yan Sun, Wenxiang Wang
Summary: This study revealed that exposure to lower levels of air pollutants led to decreased pregnancy rates, with PM10, NO2, SO2, and CO emerging as the four most prominent pollutants. Individuals aged 35 and above exhibited heightened susceptibility to pollutants.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Ali Shaan Manzoor Ghumman, Rashid Shamsuddin, Amin Abbasi, Mohaira Ahmad, Yoshiaki Yoshida, Abdul Sami, Hamad Almohamadi
Summary: In this study, inverse vulcanized polysulfides (IVP) were synthesized by reacting molten sulfur with 4-vinyl benzyl chloride, and then functionalized using N-methyl D-glucamine (NMDG). The functionalized IVP showed a high mercury adsorption capacity and a machine learning model was developed to predict the amount of mercury removed. Furthermore, the functionalized IVP can be regenerated and reused, providing a sustainable and cost-effective adsorbent.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Rita Bonfiglio, Renata Sisto, Stefano Casciardi, Valeria Palumbo, Maria Paola Scioli, Erica Giacobbi, Francesca Servadei, Gerry Melino, Alessandro Mauriello, Manuel Scimeca
Summary: This study investigated the presence of aluminum in human colon cancer samples and its potential association with biological processes involved in cancer progression. Aluminum was found in tumor areas of 24% of patients and was associated with epithelial to mesenchymal transition (EMT) and cell death. Additional analyses revealed higher tumor mutational burden and mutations in genes related to EMT and apoptosis in aluminum-positive colon cancers. Understanding the molecular mechanisms of aluminum toxicity may improve strategies for the management of colon cancer patients.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
