Article
Chemistry, Physical
Ke Feng, Qibin Li
Summary: This study investigated the removal characteristics of NH4+-N and organic matter in landfill leachate with high chloride ion content. The results showed that increasing chloride ion concentration improved the production of hypochlorous acid in the MW/PMS system, and that MW irradiation had an important influence on the activation of PMS. The high concentration of hypochlorous acid produced by the system can remove NH4+-N in situ and participate in the reaction with pollutants.
Article
Engineering, Environmental
Jianchao Wang, Dongbei Yue, Mingchun Li, Huijing Wang, Jianbing Wang, Chunrong Wang, Huijiao Wang
Summary: This study evaluated the application of carbon nitride nanosheets (CN-Ns) for adsorption of humic substances and leachate nanofiltration concentrates. The results showed that increasing the thermal oxidation temperature improved the adsorption performance of CN-Ns and their affinity for humic substances. This finding is important for the treatment of landfill leachate.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Runwei Li, Liang Li, Zhiming Zhang, Gang Chen, Youneng Tang
Summary: This study focused on the limiting factors of metal removal in landfill leachate treatment, finding that metal bisulfide and humic acid-metal complexes played important roles in the process. It also compared the limitations under different sulfide concentrations.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Environmental Sciences
Zhangbao Wang, Zhensheng Xiong, Liming Yang, Ling Lai, Hongyan Xiao, Yanyan Ding, Xubiao Luo
Summary: This study demonstrates that the combination of ozonation and microalgae is an effective method for nitrogen removal from landfill leachate. The synergistic effect of ozonation and microalgae achieved a 99.7% ammonia removal rate, with a biomass of 0.77 g/L (dry weight) and a maximum growth rate of 160 mg/L/d. Ozone pretreatment significantly reduced the chromaticity and macromolecular organic matter of the leachate.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Environmental
Bruna Porto, Ana L. Goncalves, Ana F. Esteves, Selene M. A. Guelli U. de Souza, Antonio A. U. de Souza, Vitor J. P. Vilar, Jose C. M. Pires
Summary: This study examined the potential of using microalgae for nitrogen removal from pre-treated landfill leachate, highlighting the importance of diluting effluent to reduce toxicity and turbidity. The development of novel photobioreactors shows promise in improving light absorption and enhancing microalgal growth, indicating a potential solution for effective tertiary treatment of landfill leachates.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Biotechnology & Applied Microbiology
Okan Karatas, Mehmet Kobya, Alireza Khataee, Yeojoon Yoon
Summary: This study investigated the efficiency of electrooxidation (EO) in removing perfluorooctanoic acid (PFOA) and its optimization parameters, as well as groundwater simulation. The results showed that under optimum conditions, high total organic carbon (TOC) removal was achieved. Furthermore, the electrooxidation method with boron-doped diamond (BDD) showed potential in treating PFOA-contaminated groundwater.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2022)
Article
Agricultural Engineering
Yuchen Yuan, Jiadong Liu, Bo Gao, Mika Sillanpaa, Saleh Al-Farraj
Summary: This study successfully removed high concentration of ammonia nitrogen from landfill leachate using the combination of activated sludge treatment and catalytic ozonation technology. Ammonia-oxidizing bacteria, nitrating bacteria, and denitrifying bacteria played a key role in nitrogen removal.
BIORESOURCE TECHNOLOGY
(2022)
Article
Environmental Sciences
Lang Cheng, Wenbo Yang, Hong Liang, Mohammad Nabi, Yuqi Li, Huan Wang, Jiachen Hu, Tao Chen, Dawen Gao
Summary: This study evaluated the performance of a high-rate nitrogen removal lab-scale reactor in the treatment of mature landfill leachate. The reactor combined pre-denitrification and Partial Nitrification-Anammox (PN/A) in a multi-stage fixed biofilm reactor (MFBR). The results showed high nitrogen removal efficiency and rate, as well as efficient cooperation and distribution of different microorganisms. The MFBR process also exhibited reduced energy consumption and carbon addition.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Chemistry, Multidisciplinary
Chaoqun Yan, Yijuan Tian, Zhiliang Cheng, Zejun Wei, Xuan Zhang, Xuejun Quan
Summary: A new multichannel flow reactor was designed to desalinate and remove organics from RO leachate concentrate using RuO2/IrO2-coated titanium plate as the anodes. The study showed that after 3 hours of treatment, the removal efficiency of COD, Cl-, and color could reach as high as 96.5%, 96.7%, and 99.6%, respectively. This work provides an alternative technology for the treatment of MSW leachate RO concentrate with low energy consumption.
Article
Multidisciplinary Sciences
Roohul Abad Khan, Rachida El Morabet, Nadeem A. Khan, Sirajuddin Ahmed, Majed Alsubih, Nabisab Mujawar Mubarak, Mohammad Hadi Dehghani, Rama Rao Karri, Nooshin Zomorodiyan
Summary: The treatment and disposal of wastewater containing pharmaceuticals and drug residues are challenging. This study investigated the performance of an electro bioreactor and tubesettler in treating hospital wastewater, focusing on the removal of chemical oxygen demand, nitrate, and phosphate. The results showed that the electro bioreactor effectively reduced the chemical oxygen demand and phosphate concentrations, while the tubesettler reduced the chemical oxygen demand concentration.
SCIENTIFIC REPORTS
(2022)
Article
Engineering, Environmental
Alyne Moraes Costa, Marllon Robert dos Santos Valentim, Diogo Jose Menezes de Azevedo, Bianca Ramalho Quintaes, Sarah Dario Alves Daflon, Juacyara Carbonelli Campos
Summary: The acute toxic effects of total ammonia nitrogen (TAN), alkalinity, and humic substances (HS) in landfill leachates were investigated for Vibrio fischeri, Danio rerio, Daphnia similis, and Artemia sp. Leachates from two Brazilian landfills with different ages and operating modes were treated through air stripping and membrane filtration. The results showed high toxicity of raw leachate for all test organisms, but the combination of treatments resulted in the most significant reductions in leachate toxicity. This study highlights the importance of removing acute toxicity from complex effluents to prevent potential environmental hazards to the aquatic ecosystem.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2023)
Article
Environmental Sciences
Maocai Shen, Weiping Xiong, Biao Song, Chengyun Zhou, Eydhah Almatrafi, Guangming Zeng, Yaxin Zhang
Summary: This paper provides a systematic summary of the occurrence of plastics, microplastics, and nanoplastics in landfill leachate and their interaction with other pollutants. It discusses the potential risks posed by microplastics in leachate, as well as the different technologies used for leachate treatment. The paper also highlights the limitations and challenges of existing microplastic removal techniques and calls for the development of new technologies to address this issue. This study serves as a scientific basis for further research on the fate of microplastics in landfill and leachate.
Article
Environmental Sciences
Zhenyu Yan, Anjie Li, Hojae Shim, Danyang Wang, Shuqian Cheng, Yuexing Wang, Ming Li
Summary: In this study, the O3-PN-AMX biogranules process was used to effectively remove nitrogen from mature landfill leachate (MLL) without carbon addition and pH adjustment. The application of ozone pretreatment and granular sludge improved treatment efficiency and stability, providing a novel and effective operation strategy for nitrogen removal from MLL.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Review
Environmental Sciences
Zijing Guo, Yang Zhang, Hui Jia, Jiaran Guo, Xia Meng, Jie Wang
Summary: The treatment of landfill leachate using electrochemical methods, particularly electrocoagulation and electrooxidation, has shown promising results in removing various pollutants. This review summarizes the latest research achievements and development trends over the past five years, as well as the challenges faced by electrochemical methods in actual applications.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Review
Green & Sustainable Science & Technology
Ye Li, Fan Tang, Dan Xu, Bing Xie
Summary: With the increase in municipal solid waste output, landfill leachate treatment has become a major concern. This paper reviews different biological treatment methods, highlighting the higher efficiency of nitrogen removal in processes combined with microorganisms.
Article
Engineering, Environmental
Lingen Zhang, Zhenming Xu, Zhen He
JOURNAL OF HAZARDOUS MATERIALS
(2020)
Article
Engineering, Environmental
Bing Xu, Zhen He
Summary: A two-stage direct contact membrane distillation system is developed for efficient removal and recovery of ammonia from anaerobic digestate. A high initial pH of the feed solution is crucial for achieving high ammonia removal, while minimizing the volume of permeate solution can increase the concentration of ammonia.
WATER ENVIRONMENT RESEARCH
(2021)
Article
Engineering, Environmental
Yanran Xu, Zhen He
Summary: In this study, hydrogen peroxide (H2O2) was utilized to inhibit methanogenesis and enhance VFA accumulation, showing a significant reduction in methane production and higher VFA concentration with the addition of 0.06 wt.% H2O2. The dominant VFAs in the presence of H2O2 were acetic acid and propionic acid. The mechanism of H2O2 inhibition suggests that at low concentrations, it mainly inhibits methanogenesis to limit the consumption of VFAs, while at higher concentrations it may start to inhibit hydrolysis and acidogenesis or oxidize VFAs.
WATER ENVIRONMENT RESEARCH
(2021)
Article
Engineering, Environmental
Zixuan Wang, Christopher J. Hartline, Fuzhong Zhang, Zhen He
Summary: The study demonstrates an effective approach to extract nutrients from wastewater for enhanced microalgal growth and improved biomass quality using the MNRC-PBR system.
Article
Engineering, Environmental
Chao Wang, Jing Yu, Guoping Ren, Andong Hu, Xing Liu, Yiping Chen, Jie Ye, Shungui Zhou, Zhen He
Summary: This study successfully developed an innovative biophotoelectrochemistry system using Methanosarcina barkeri-CdS as a biohybrid catalyst for CO methanation. The system showed higher methane production efficiency compared to traditional methods. It was found that CO could effectively quench the reactive species and serve as a carbon source for M. barkeri under light irradiation.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Engineering, Environmental
Fubin Liu, Alyssa Worland, Yinjie Tang, Hanan Moustafa, Mohammed Salah El-Din Hassouna, Zhen He
Summary: This study successfully recovered more than 60% of ammonia nitrogen using a microbial electrochemical system (MES) from a mixture of anaerobic digester (AD) centrate and food wastewater. The recovered ammonia was used to prepare fertilizers for supporting the growth of Arabidopsis thaliana, showing better performance in size and death rate compared to the control group added with commercial fertilizer.
Article
Engineering, Environmental
Matthew Ferby, Shiqiang Zou, Zhen He
Summary: Microbial fuel cells (MFCs) and forward osmosis (FO) are efficient wastewater treatment technologies, but the selection of draw solute in FO treatment can affect MFC performance. NH4HCO3 as a draw solute in the FO-MFC system showed higher power density and Coulombic efficiency, but may inhibit microbial activity. Integration of FO with MFC can reduce energy consumption and improve nutrient recovery in wastewater treatment.
WATER ENVIRONMENT RESEARCH
(2022)
Article
Engineering, Environmental
Zixuan Wang, Zhen He
Summary: Simultaneous phosphorus leaching and nutrient recovery from wastewater can be achieved through electrochemical fermentation, which is a significant step towards sustainable economy.
Article
Engineering, Environmental
Jiasi Sun, Yanran Xu, Shaker Nairat, Jianpeng Zhou, Zhen He
Summary: Anaerobic digestion is an important method for recovering bioenergy from wastewater treatment. In this study, a robust AD model for predicting biogas production was developed using machine learning. The voting model outperformed individual models, with a coefficient of determination of 0.778 and a root mean square error of 0.306. The analysis revealed that returning activated sludge and temperature of wastewater influent were important features for predicting biogas production.
WATER ENVIRONMENT RESEARCH
(2023)
Article
Engineering, Environmental
Zixuan Wang, Daran Anand, Zhen He
Summary: Two different environments in an electrochemical process enable simultaneous leaching and recovery of phosphorus from municipal whole digestate. The proposed electrochemical phosphorus recovery cell (EPRC) achieved a high leaching efficiency of 93.3% through acidification, and precipitated nearly 99% of the leached phosphorus using native metals in the cathode chamber. The EPRC demonstrated the feasibility of recovering phosphorus from phosphorus-rich solid wastes.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Kaichao Yang, Ibrahim M. Abu-Reesh, Zhen He
Summary: A membrane-less electrochemical system was developed to remove disinfection byproducts (DBPs) in drinking water through adsorption and reduction by granular activated carbon (GAC)-based cathode. The system achieved high removal efficiency of DBPs and had potential applications for wastewater reuse or further purification of drinking water.
Article
Engineering, Environmental
Moshan Chen, Carter A. Rholl, Shane L. Persaud, Zixuan Wang, Zhen He, Kimberly M. Parker
Summary: During harmful algal blooms (HABS), permanganate can be used as a preoxidant to improve drinking water quality by removing algal cells and degrading algal toxins. However, permanganate oxidation also alters the precursors of disinfection byproducts (DBPs) from intracellular algal organic matter (AOM), affecting DBP formation during disinfection. This study evaluated the impacts of permanganate preoxidation on DBP generation during chlorination and chloramination of AOM. The results showed that permanganate preoxidation increased the formation of certain DBPs and decreased others, indicating a complex interaction between permanganate and AOM.
Article
Environmental Sciences
Yanran Xu, Zixuan Wang, Shaker Nairat, Jianpeng Zhou, Zhen He
Summary: This study utilized machine learning and deep learning models to predict effluent phosphorus concentration and proposed an anomaly alarm design to minimize the chance of exceeding the discharge permit based on incomplete data sets.
Review
Environmental Sciences
Harmita Golwala, Biraj Saha, Xueyao Zhang, Stephanie C. Bolyard, Zhen He, John T. Novak, Yang Deng, Brian Brazil, Frank J. DeOrio, Syeed Md Iskander
Summary: Landfill leachate treatment is a complex issue that requires investigation into emerging treatment technologies. The focus has shifted from contaminant removal to the simultaneous recovery of resources and removal of contaminants. However, the feasibility and environmental impact of resource recovery are questionable. Developing effective integrated leachate treatment methods seems wiser in the face of emerging contaminants and stringent regulations.
Article
Engineering, Environmental
Daniele Cecconet, Fabrizio Sabba, Valentina Anastasi, Silvia Bolognesi, Arianna Callegari, Zhen He, Andrea G. Capodaglio
Summary: Nitrate (NO3-) contamination is a significant concern for human health, and bioelectrochemical systems (BESs) have emerged as a promising method for its reduction. A mathematical model was developed to predict energy consumption and removal efficiency by simulating electron exchange and competition processes. This model provides a platform for estimating BES energy consumption and removal efficiency accurately.
ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY
(2022)
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)
