Article
Environmental Sciences
Alana C. Crispim, Danyelle M. de Araujo, Carlos A. Martinez-Huitle, Fernanda L. Souza, Elisama Dos Santos
Summary: This study investigates the applicability of electro-Fenton (EF) and photoelectro-Fenton (PEF) processes for treating landfill effluent with high organic content. The results show that after 4 hours of operation at a current density of 90 mA cm(-2), the best efficiencies for removing organic matter (COD) were 66%, 68%, and 89% for EF, PEF-UVA, and PEF-UVC, respectively, with relatively low energy consumption.
ENVIRONMENTAL RESEARCH
(2022)
Article
Engineering, Environmental
Xinyu Gao, Chunying Zhang, Yanqiu Wang, Huan Zhang, Meiling Zhao, Yixian Wang, Yuting Guo
Summary: In this study, a heterogeneous electro-Fenton system was constructed using a Fe-loaded needle coke composite electrode to treat the membrane concentrated landfill leachate. The optimized reaction conditions resulted in significant removal of COD and color, as well as improved biodegradability. Spectral analysis showed degradation of organic pollutants in the leachate concentrate.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Engineering, Environmental
Qianqian Jin, Yuting Zhan, Danyang Tao, Tieyu Wang, Jong Seong Khim, Yuhe He
Summary: In this study, the feasibility, performance, and mechanism of using synchronized oxidation-adsorption (SOA) Fenton technology to degrade and remove the liquid crystal monomer pollutant DTFPB were evaluated. The results showed that the SOA Fenton system could effectively degrade DTFPB and remove its byproducts through hydroxyl radical oxidation and synchronized adsorption by in situ resultant ferric particles. This study provides new insights into the potential application of the Fenton process for treating emerging liquid crystal monomer contaminants in wastewater.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Environmental Sciences
Anna Kwarciak-Kozlowska, Krzysztof L. Fijalkowski
Summary: This study aimed to evaluate the efficiency of advanced oxidation and biochar adsorption in treating landfill leachate. The results showed that under specific conditions, these methods could effectively reduce COD and TOC levels, as well as decrease the toxicity of leachate, indicating their potential for environmental purification.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Review
Engineering, Chemical
Ramazan Keyikoglu, Okan Karatas, Hamidreza Rezania, Mehmet Kobya, Vahid Vatanpour, Alireza Khataee
Summary: Landfill leachate (LL) is a highly toxic wastewater containing various pollutants, and the integration of membrane technologies is essential for its treatment. While achieving high pollutant removal efficiency, the drawback of producing hazardous membrane concentrates remains a challenge. The review provides a detailed overview of methods for treating membrane concentrates and highlights the importance of engineered combinations of techniques for satisfactory removal efficiencies.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Environmental Sciences
Pradeep Kumar Singa, Mohamed Hasnain Isa, Baskaran Sivaprakash, Yeek-Chia Ho, Jun-Wei Lim, Natarajan Rajamohan
Summary: Three Fenton processes, including conventional Fenton, photo-Fenton, and electro-Fenton, were used to remove PAHs from landfill leachate. RSM and ANN were used to optimize the treatment conditions. The photo-Fenton and electro-Fenton processes showed higher removal percentages for COD and PAHs compared to the Fenton process. Elemental characterization of the resultant iron sludge revealed the presence of various elements, with oxygen being the most abundant.
ENVIRONMENTAL RESEARCH
(2023)
Article
Engineering, Environmental
Yihui Li, Zhiheng Li, Jie Bai, Fan Wang
Summary: This study compared the removal efficiency of refractory organic matter in landfill leachate using homogeneous Fenton and heterogeneous Fenton-like processes. The Fenton process showed slightly higher removal efficiency than the Fenton-like processes. The activation mechanisms in the Fenton-like processes involved homogeneous activation of Fe2+ in solution and heterogeneous activation of iron oxides produced during the reaction. This study provides a theoretical basis for the treatment of refractory organics in landfill leachate.
WASTE MANAGEMENT & RESEARCH
(2023)
Article
Engineering, Environmental
Yalin Zeng, Lieshan Wu, Shiwei Huang
Summary: Gd/Fe-C composites were prepared and characterized. The addition of rare earth element Gd improved the material's surface structure and functional groups, leading to enhanced degradation of organic compounds and color.
ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY
(2022)
Article
Environmental Sciences
Mohammad Reza Khavari Kashani, Qilin Wang, Masoumeh Khatebasreh, Xuan Li, Amir Mohammad Sheikh Asadi, Grzegorz Boczkaj, Farshid Ghanbari
Summary: This study investigated the sequential treatment of highly resistant landfill leachate using electrocoagulation (EC)/aeration, sulfate radical advanced oxidation process (SR-AOP), and electro-Fenton (EF). The results showed that the sequential application of these processes effectively removed COD, TOC, and ammonia from the leachate, meeting environmental regulations. The current configuration of EC/aeration-PMS/ZVI/UV-EF achieved the best performance and reduced the phytotoxicity of the leachate.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Engineering, Multidisciplinary
Mohd Salim Mahtab, Dar Tafazul Islam, Izharul Haq Farooqi
Summary: The study utilized the Fenton-based advanced oxidation technique for landfill leachate treatment, optimized the process through response surface methodology, determined the optimal operating conditions, and obtained a significant quadratic regression model that fit the experimental data.
ENGINEERING SCIENCE AND TECHNOLOGY-AN INTERNATIONAL JOURNAL-JESTECH
(2021)
Article
Environmental Sciences
Zhihong Ye, Fei Miao, Hui Zhang
Summary: This study demonstrates for the first time the feasibility of removing COD and NH4+-N from landfill leachate using an electrochemical assisted HClO/Fe2+ process. The performance of active chlorine generation at the anode was evaluated, and the coexistence of (OH)-O-center dot and (FeO2+)-O-IV in the system was confirmed. The influence of pH, Fe2+ concentration, and current density on COD and NH4+-N removal was investigated, and the reaction mechanism was proposed. The proposed process shows promise as an alternative for treating refractory landfill leachate.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Engineering, Environmental
Hamza Bellouk, Mohamed Danouche, Imane El Mrabet, Karim Tanji, Fouad Khalil, Mostafa Nawdali, Naima El Ghachtouli, Hicham Zaitan
Summary: This study investigated the use of an ultrasound-photo-Fenton process (US-P-FP) for landfill leachate treatment. The results showed that the process effectively removed COD, UV254, and color from the leachate. Optimization of operating factors resulted in the highest removal efficiencies at specific conditions, and the treated leachate showed reduced phytotoxicity.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Jiafeng Wei, Wangqing Shen, Yin Liu
Summary: In this study, SrWO4@MIL-88A(Fe) composites were prepared through room temperature synthesis. The photo-Fenton process of SrWO4@MIL-88A(Fe) was employed for the systematic degradation of methylene blue (MB) and landfill leachate. The results demonstrated that SrWO4@MIL-88A(Fe) could efficiently degrade MB and reduce the pollutants in the leachate, providing a purification pathway for dual-effect treatment.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Engineering, Environmental
Yongyuan Yang, Alex Ricoveri, Kristof Demeestere, Stijn Van Hulle
Summary: The complexity and dynamic characteristics of landfill leachate pose challenges for its treatment. A combined treatment process, including a one-stage partial nitrification-Anammox process, an O-3/H2O2 process, and a granular activated carbon filtration (GAC) process, was investigated. A surrogate-based ozone dose control strategy for the O-3/H2O2 process was evaluated. Results showed that this three-stage process achieved high removal rates of total nitrogen, COD, and micropollutants, satisfying discharge requirements. Real-time control of ozone dosing for COD removal was achieved through monitoring UVA(254) reduction. Cost analysis indicated that the combination of O-3/H2O2 and GAC as the main steps was more cost-effective in post-treatment. A dynamic operation strategy in response to leachate changes was recommended.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Environmental Sciences
Lakshmi Pisharody, Ashitha Gopinath, Milan Malhotra, P. Nidheesh, M. Suresh Kumar
Summary: Landfilling is a common method for managing municipal solid waste globally, but leachate generation poses environmental issues. Advanced oxidation processes (AOPs) show potential in removing micropollutants from landfill leachate, but further research is needed for better understanding.
Article
Chemistry, Multidisciplinary
Xuexia Wang, Shaoqi Zhou, Xiangning Bu, Chao Ni, Guangyuan Xie, Yaoli Peng
Summary: The study demonstrated that coarse coal particles can greatly enhance the flotation of fine coal by accumulating or adhering to them, as the total interaction between the two types of particles was found to be attractive based on the theoretical calculation of EDLVO.
SEPARATION SCIENCE AND TECHNOLOGY
(2021)
Article
Ecology
Jing Li, Weixin Chen, Wei Zhou, Yao Wang, Maocheng Deng, Shaoqi Zhou
Summary: The study found that two pyrene-degrading strains could enhance the degradation efficiency of pyrene in co-incubation, with sodium citrate as a co-metabolic carbon source promoting the degradation process. The mixed bacteria had a better effect than any single bacteria, suggesting a synergistic enhancement of degradation efficiency.
Article
Polymer Science
Ke Zheng, Shaoqi Zhou, Zuqin Cheng, Guoru Huang
Summary: The study investigates the performance improvement of CC blend in FO membranes, showing enhanced porosity and hydrophilicity in substrates with the introduction of CC. The rejection layer presents better morphology, with the optimal blend ratio of 10% CC.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Environmental Sciences
Yimin Fan, Xiaojun Niu, Dongqing Zhang, Zhang Lin, Mingli Fu, Shaoqi Zhou
Summary: Phosphine production in anaerobic digestion was found to mainly occur during logarithmic microbial growth, with dehydrogenase and hydrogen playing key roles. The abundance of Ruminococcaceae and Escherichia was observed to promote phosphine generation. Metabolic pathway analysis revealed associations between phosphine formation and genetic information processing, biosynthesis of cofactors, prosthetic groups, electron carriers, and vitamins.
Article
Environmental Sciences
Jing Hu, Chengbin Zhu, Yunchuan Long, Qin Yang, Shaoqi Zhou, Pan Wu, Juan Jiang, Wei Zhou, Xuejun Hu
Summary: This study investigated the interaction between dissolved heavy metals and coexisting chemical factors in karst wetland waters by analyzing surface water samples from Caohai Wetland. Results indicated that pH, dissolved oxygen, electrical conductivity, SO42-, and HCO3- were the main factors influencing heavy metals. The main cations were Ca2+ and the main anion was HCO3-. These findings provide valuable geochemical information for assessing and managing heavy metal pollution in water.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Yunchuan Long, Juan Jiang, Xuejun Hu, Jing Hu, Chunguang Ren, Shaoqi Zhou
Summary: The study investigated the response of sediment microbial communities in Caohai Lake to anthropogenic activities and found that physicochemical changes caused by human activities may influence enzyme activities in a non-linear pattern. Although there were few differences in alpha diversity indices between high and low disturbed areas, clear disparities in microbial community composition and beta-diversity analysis were observed. The intensity of anthropogenic impacts in Caohai was found not to have reached potential thresholds, and the best distinguish biomarkers between the two areas were not necessarily the ones with high microbial abundance.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2021)
Article
Environmental Sciences
D. Liu, S. Zhou
Summary: The study showed that phosphorus can be efficiently recovered from glyphosate-rich wastewater through chemical coagulation.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2022)
Article
Green & Sustainable Science & Technology
Wangde Deng, Dongqing Zhang, Xiaoxian Zheng, Xingyao Ye, Xiaojun Niu, Zhang Lin, Mingli Fu, Shaoqi Zhou
Summary: Marble waste, sepiolite, and agricultural waste were used to synthesize two modified-biochar composites for phosphate removal. These composites exhibited excellent adsorption performance and can be applied as fertilizer to increase soil fertility.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Engineering, Chemical
Xuexia Wang, Xiangning Bu, Chao Ni, Shaoqi Zhou, Xiaolin Yang, Jing Zhang, Muidh Alheshibri, Yaoli Peng, Guangyuan Xie
Summary: Scrubbing is a suitable method for cleaning fine slime on microcrystalline graphite surface and improving its flotation performance. This study found that the particle size of the scrubbing medium is the most important factor influencing the enrichment efficiency of microcrystalline graphite. The optimal conditions for the scrubbing process were determined and confirmed through testing.
MINERALS ENGINEERING
(2021)
Article
Engineering, Chemical
Meng Li, Juan Zhou, Yong-Guang Bi, Shao-Qi Zhou, Ce-Hui Mo
Summary: The polypyrrole/sewage sludge carbon electrode showed excellent electrochemical performance in removing Cr(VI) and releasing bio-energy in microbial fuel cells. It exhibited low charge transfer resistance and high electrochemical activity, leading to stable Cr(VI) removal and power production. This composite material can serve as an effective and low-cost catalyst for accelerating Cr(VI) reduction and enhancing bio-power production.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Environmental Sciences
Yunchuan Long, Xuejun Hu, Juan Jiang, Jing Hu, Chengbin Zhu, Shaoqi Zhou
Summary: The cultivation of different aquatic plants in sediment can affect the sorption-desorption behaviors of phosphorus, with differences observed between submerged plants like Hydrilla verticillata and emerged plants like Scripus triqueter. The study suggests that the growth of submerged plants may enhance P retention capacity and reduce release risk in sediments.
Article
Engineering, Chemical
Ke Zheng, Shaoqi Zhou, Zuqin Cheng, Guoru Huang
Summary: The study shows that introducing QPPO into the substrate is a sensible strategy for fabricating high-performance TFC FO membranes, as it improves the structure and performance of the membranes and enhances FO performance.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Environmental Sciences
Yang Liu, Feiyan Liu, Kylie Fei Dong, Yongning Wu, Xingfen Yang, Jintao Yang, Hong Tan, Xiaojun Niu, Xinyuan Zhao, Gexin Xiao, Shaoqi Zhou
Summary: The blood lead levels of children in China are still notably high in many areas, primarily due to lead pollution from industries like lead mining and recovery. Some regions have children with blood lead levels exceeding the standard, which requires attention.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Runyuan Zhang, Xiaoxian Zheng, Dongqing Zhang, Xiaojun Niu, Jinlin Ma, Zhang Lin, Mingli Fu, Shaoqi Zhou
Summary: The study showed that the natural endogenous minerals in biochar can promote the formation of porous and defective structures, increase carbonization and graphitization degree, and exhibit higher catalytic efficiency in the activation of persulfate for tetracycline degradation.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Xiaomin Xu, Yongqing Zhang, Shaoqi Zhou, Renfeng Huang, Shaobin Huang, Hainan Kuang, Xianlin Zeng, Shuaifei Zhao
Summary: The study investigated the use of manganese oxyhydroxide (MnOOH) as an activator for persulfate (PS) to degrade p-chloroaniline (PCA) from wastewater. Results showed that higher MnOOH and PS addition enhanced PCA degradation efficiency, while the degradation efficiency was slightly inhibited as the initial pH increased from 3 to 9. This research provides insights into the activation mechanism of PS by manganese oxide and supports the practical application of AOPs of manganese-based materials for wastewater treatment.
Article
Engineering, Environmental
Xiaojian Liu, Bei Wang, Yayun Ma, Xiangyang Zhou, Juan Yang, Yuehui He, Jingjing Tang, Fanyun Su, Wan Yang
Summary: This study proposes a combined process of reduction roasting of herb-medicine residue and oxalic acid leaching to improve the recovery efficiency of lithium from spent lithium-ion batteries. By utilizing the reducing gas produced from the pyrolysis of herb-medicine residue, the layered structure of the cathode powder is destroyed and converted into Li2CO3, Ni, Co, and MnO. Additionally, selective extraction of lithium is achieved using oxalic acid, and the efficiency and kinetics of lithium extraction are improved under the combined action of herb-medicine residue and oxalic acid.
Article
Engineering, Environmental
Muxina Konarova, Nuno Batalha, Gabriel Fraga, Mohamed H. M. Ahmed, Steven Pratt, Bronwyn Laycock
Summary: This study presents a proof of concept for a technology that integrates PET recovery from mixed plastic waste and plastic pyrolysis. By depolymerizing PET into TPA using a low volatility oil as medium, it achieves low-pressure operation and a selective separation and recovery of TPA from the product mix. Full PET conversion and high TPA recovery were achieved, making it an effective solution for processing mixed waste streams and improving the yield and quality of liquid product from thermal pyrolysis compared to untreated feedstock.
Article
Engineering, Environmental
Zhenhua Sun, Jing Li, Xuejiang Wang, Siqing Xia, Jianfu Zhao
Summary: This study investigated the influence of in-situ formed MgFe2O4 on the hydrothermal treatment of swine manure. The results showed that the in-situ formation of MgFe2O4 improved the dehydration and decarboxylation of organic components in swine manure, thereby improving its carbonization degree. Furthermore, it enhanced the stabilization of heavy metals and the retention of phosphorus. MgFe2O4 modified hydrochars exhibited remarkable adsorption capacity for Pb(II) and Cu(II) without any leaching of heavy metals.
Article
Engineering, Environmental
Yijing Jiang, Boyang Leng, Jingxin Xi
Summary: The increased generation of municipal solid waste has had a significant impact on the economy, environment, and public health. The current waste treatment process has limitations. By developing a comprehensive social costing model, this study assesses the impacts of municipal solid waste management throughout its life cycle and provides policymakers with best practices and feasibility information.
Article
Engineering, Environmental
Marina Hernandes de Paula e Silva, Ricardo Coser Mergulha, Jose Geraldo Vidal Vieira, Andrea Brasco Pampanelli, Rodrigo Salvador, Diogo Aparecido Lopes Silva
Summary: This study developed and implemented a self-assessment tool to assist companies in decision-making processes for establishing circular flows based on Lean Manufacturing and Circular Economy principles. The tool utilized a maturity model and was applied to nine companies of varying characteristics. The findings revealed that certain companies showed higher maturity in water-waste and chemical-emissions management, with larger enterprises focusing on these strategies. However, many companies lacked sufficient training and employee awareness prior to seeking cleaner alternatives, and comprehensive actions to manage the product lifecycle were lacking. To address these gaps, the tool provided tailored recommendations for each company to improve their processes, products, and value chain.
Article
Engineering, Environmental
Gamze Dogdu, Turgay Pekdemir, Sanaz Lakestani, Seyda Karabork, Osman Cavus
Summary: This paper presents data on food waste associated with mini size food packaging services, highlighting the difficulties in emptying the food and consumer wastefulness as the main causes. These findings have significant implications for the sustainability of food and relevant packaging.
Article
Engineering, Environmental
Qingxia Li, Xin Kong, Yuxin Chen, Jianan Niu, Jia Jing, Jin Yuan, Yifeng Zhang
Summary: This study investigates how to enhance methane production from food waste after hydrothermal pretreatment. The results demonstrate a significant increase in methane yield when zero-valent iron and magnetite are used together, and high organic loading is favorable for methane production. Microbial diversity analysis further reveals the dominant pathways and metabolic processes involved in methane generation.
Article
Engineering, Environmental
D. H. H. Sim, I. A. W. Tan, L. L. P. Lim, E. T. Lau, B. H. Hameed
Summary: The development of controlled-release fertilizer formulation is important for preventing environmental pollution caused by nutrient leaching and volatilization. This study combined biochar-based fertilizer with encapsulation technology to improve the nutrient release mechanism. Optimal conditions for synthesizing urea-impregnated biochar (UIB) were determined using central composite design, and the release of nitrogen was described by mathematical models. Results showed that encapsulated UIB (EUIB) achieved complete release of nitrogen in water and exhibited improved water retention in sandy-textural soil. Therefore, EUIB derived from peppercorn waste has the potential to be used as a sustainable controlled-release fertilizer for agriculture.
Article
Engineering, Environmental
Yuchuan Wang, Neslihan Akdeniz
Summary: Incorporating biochar into composting systems can increase compost temperatures. This study developed a heat transfer model for a biochar-amended co-composting system and found that biochar increased thermal conductive losses but also enhanced microbial activity, resulting in an overall increase in total heat unit. When biochar was applied on the surface, it mainly functioned as an insulator.
Article
Engineering, Environmental
George Tsalis, Birger Boutrup Jensen, Jessica Aschemann-Witzel
Summary: This paper empirically explores the relationship between retail price promotions and household food waste. The results show that households with a higher proportion of discount food purchases and environmental awareness tend to waste less food, while larger households and those lacking food handling skills tend to waste more food.
Article
Engineering, Environmental
Lukas Friederici, Arne Koch, Patrick Martens, Jana Pantzke, Sebastiano Di Bucchianico, Thorsten Streibel, Christopher P. Rueger, Ralf Zimmermann
Summary: The increasing demand for lightweight materials has led to a rise in fiber-reinforced plastic (FRP) production. However, the properties and compositional range of FRPs pose challenges to recycling strategies. Pyrolysis has emerged as a promising method for separating the fibers from the polymer matrix. This study investigated the pyrolysis process using thermal analysis and high-resolution mass spectrometry, and also assessed the toxicity of the recovered fibers using an in vitro model.
Review
Engineering, Environmental
Devika Kannan, Shakiba Khademolqorani, Nassibeh Janatyan, Somaieh Alavi
Summary: This paper introduces Smart Waste Management (SWM) that applies Industry 4.0 technologies in waste management. A framework called SWM4.0 is developed, which highlights the importance of smart people, smart cities, smart enterprises, and smart factories in achieving successful waste management. The paper also suggests future research directions and managerial implications.
