Article
Engineering, Chemical
Javier Tejera, Daphne Hermosilla, Antonio Gasco, Ruben Miranda, Victor Alonso, Carlos Negro, Angeles Blanco
Summary: This study aims to optimize a two-step treatment for mature landfill leachate using electrocoagulation (EC) followed by Fenton or UVA-LED photo-Fenton processes, in order to provide a more efficient and feasible treatment strategy that increases biodegradability and decreases conductivity. The research found that higher EC current density results in higher residual iron concentration, which can reduce treatment time for subsequent Fenton processes. Overall, the total COD removal rate was around 87%, with improvements in SUVA removal, conductivity reduction, and biodegradability.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2021)
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
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
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
Environmental Sciences
Christiarani Jegadeesan, Adishkumar Somanathan, Rajesh Banu Jeyakumar, V. Godvin Sharmila
Summary: The combined process of electrocoagulation and solar photo Fenton was used to treat landfill leachate, resulting in effective removal of COD and colour. The electrocoagulation process and solar photo Fenton process improved the biodegradability of the leachate, making it a viable treatment technique.
ENVIRONMENTAL TECHNOLOGY
(2023)
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
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
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)
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, Chemical
Javier Tejera, Antonio Gasco, Daphne Hermosilla, Victor Alonso-Gomez, Carlos Negro, Angeles Blanco
Summary: This trial assessed the application of UVA-LED technology in the photo-Fenton processes for landfill leachate treatment, resulting in optimized COD removal, biodegradability enhancement, and reduced operational costs. The combination of coagulation and photo-Fenton treatment proved to be efficient in degrading landfill leachate, with the 8 W 365 nm UVA-LED lamp providing competitive results compared to conventional lamp options.
Article
Engineering, Environmental
Zhichao Zhao, Yong Zhang, Ling Yu, Deyin Hou, Xiaohui Wu, Kuiling Li, Jun Wang
Summary: This study demonstrated that Fenton pretreatment without pH neutralization effectively alleviated membrane fouling during membrane distillation (MD) treatment of landfill leachate membrane concentrate (LLMC). The synergistic mechanism between oxidation and acidification for fouling mitigation was elucidated and a satisfactory total organic carbon (TOC) rejection rate was achieved during the combined Fenton-MD process.
Article
Environmental Sciences
Anjali Bhagwat, Rajat Kumar, Chandra Shekhar Prasad Ojha, Mukesh Kumar Sharma, Apourv Pant, Babita Sharma, Jai Vir Tyagi
Summary: The leachates from landfills pose a potential contamination risk to surface and groundwater. As the landfill ages, the leachate's pH changes, affecting treatment methods. Ferric chloride is found to be the most efficient coagulant, surpassing Fenton. Switching to ferric chloride or Fenton treatment can significantly reduce operational costs compared to the current method used.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Engineering, Environmental
Mingran Li, Mengnan Zhou, Xia Qin
Summary: This study investigated the electro-Fenton treatment of landfill leachate using an orthogonal experiment to determine the optimal operating parameters. Diluting the leachate with electro-Fenton effluent improved the treatment performance, achieving a significant reduction in COD. The study also found that the treatment effectively decomposed organic matter in the leachate and reduced its humification. Compared to previous studies, this treatment method demonstrated high removal efficiency, low energy consumption, and cost-effectiveness.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Engineering, Environmental
Chengrui Guo, Xia Qin, Rui Guo, Yue Lv, Mingran Li, Ziyuan Wang, Tinghui Li
Summary: In this study, the heterogeneous Fenton-like process using Cu-Fe@CTS as catalyst was applied to treat pre-coagulated leachate nanofiltration concentrate, achieving high removal efficiency of organic compounds. The results showed that the catalyst effectively removed Fulvic acid-like substances in water, with hydroxyl radicals (•OH) as the main active species.
Article
Engineering, Chemical
J. Carbajo, J. E. Silveira, G. Pliego, J. A. Zazo, J. A. Casas
Summary: Increasing temperature significantly enhances the efficiency of homogeneous photo-Fenton reactions, improving TOC removal rates for phenol degradation and landfill leachate treatment. Higher temperatures lead to faster mineralization of contaminants and increased energetic efficiency, making high temperature photoassisted processes a cost-efficient option for wastewater treatment.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Biotechnology & Applied Microbiology
Rodrigo Poblete, Ernesto Cortes, Manuel Maldonado
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2020)
Article
Biotechnology & Applied Microbiology
Rodrigo Poblete, Ernesto Cortes, Jose Bakit, Yolanda Luna-Galiano
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2020)
Article
Environmental Sciences
Rodrigo Poblete, Osvaldo Painemal
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2020)
Article
Environmental Sciences
Rodrigo Poblete, Guray Salihoglu, Nezih Kamil Salihoglu
Summary: This study evaluated the influence of introducing solar heat and aeration to waste grass during the composting process. The highest temperature was obtained in the compost pile with a greenhouse, with a decrease in C/N ratios observed after 70 days of composting. Despite the higher temperature of solar-heated air compared to the greenhouse, excessive aeration may lead to cooling effects in the compost pile.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Engineering, Chemical
Rodrigo Poblete, Ernesto Cortes, Norma Perez, Marcos Valdivia, Manuel I. Maldonado
Summary: The study determined the optimal reagent concentrations in a solar photo-Fenton process for treating grape juice wastewater, achieving high COD and polyphenols removal rates. The results demonstrated that the process is suitable for handling refractory organic matter from grape juice.
INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING
(2021)
Article
Environmental Sciences
Alex Schwarz, Norma Perez
Summary: The study evaluated the long-term operation of a bench-scale reactor simulating a permeable reactive barrier for treating acid mine drainage. The results indicate that SDES PRB is effective in removing metals from AMD-contaminated groundwater with high concentrations of metals and protecting the microbial consortium from metal toxicity and acidity in the long-term.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Environmental Sciences
Rodrigo Poblete, Ernesto Cortes, Norma Perez, Manuel Maldonado
Summary: This research investigates the use of vinasse and caffeic acid as chelating agents in the photo-Fenton process of landfill leachate, and finds that these agents can enhance the solubility of iron.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Green & Sustainable Science & Technology
Elena H. del Amo, Rodrigo Poblete, Olga Sanchez, Manuel I. Maldonado
Summary: In this study, an adapted compost was used to treat complex, toxic, and aged landfill leachate. High removal efficiencies of organic matter, copper, and iron were achieved after pretreatments and the biologic process with compost. The analysis of microbial assemblages in compost samples revealed certain resilient genera and relevant metabolisms for pollutant removal.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Environmental Sciences
Rodrigo Poblete, Jose Bakit
Summary: The study evaluated the removal of organic matter from Pisco production wastewater using coagulation/flocculation, filtration as a pre-treatment, and solar photo-Fenton process with different types of photoreactors. The results showed that the overall removal efficiency for chemical oxygen demand (COD) and polyphenols varied depending on the type of photoreactor used. The use of ozone in the solar photoreactors resulted in similar trends. Economic analysis revealed that the flat plate (FP) reactors had lower costs compared to compound parabolic collectors (CPCs).
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Rodrigo Poblete, Carlos Anibal Rodriguez, Claudia Carrasco, Jose Herrera, Ricardo Salazar-Gonzalez
Summary: This study investigated the application of copper as a catalyst in solar photo-Fenton-like processes for landfill leachate treatment. The results showed that a copper sheet with a mass of 2.7 g, a solution pH of 5, and a 10% concentration of landfill leachate achieved the highest removal of organic matter. Photolysis using solar UV had limited removal efficiency for humic acid and COD, while the use of a copper sheet under Fenton-like conditions resulted in significant removal of humic acid and COD. The inhibition rate of biological activated sludge caused by raw landfill leachate decreased from 29.1% to 0.23% after adjustment to pH 7.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Rodrigo Poblete, Ernesto Cortes, Norma Perez, C. A. Rodriguez, Yolanda Luna-Galiano
Summary: This study evaluated for the first time the combined effect of ultrasound process and photo-Fenton process using fly ash as a catalyst for the treatment of old landfill leachates. The results showed that adjusting the pH to 3, adding 2 g of fly ash per liter, and applying ultrasound frequency of 576 kHz achieved the highest removal efficiency for COD, color, and UV 254. pH was found to be the most influential parameter, and lower pH values and ultrasound frequency were beneficial for the removal of pollutants.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Elizabeth Alvarez-Chavez, Stephane Godbout, Mylene Genereux, Caroline Cote, Alain N. Rousseau, Sebastien Fournel
Summary: This study evaluated the effect of alternative filtering materials and bed aeration on the retention of nutrients and fecal bacteria in woodchip bedded stand-off pads for cows. The results showed that the alternative biofilters were more efficient in removing COD, SS, TN, and NO3-N, while conventional biofilters were more efficient for PO4-P removal. Aeration did not have a significant effect under the tested temperature conditions.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Yike Zhang, Zengyi Ma, Zhuoting Fang, Yuandong Qian, Zhiping Huang, Yilong Ye, Jianhua Yan
Summary: This study investigates the application of oxygen enrichment melting technology in the melting of municipal solid waste incineration fly ash. The results demonstrate that oxygen enrichment technology can reduce energy consumption and operating costs, as well as decrease pollution emissions.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Liangang Xiao, Mingkai Leng, Philip Greenwood, Rongqin Zhao, Zhixiang Xie, Zengtao You, Junguo Liu
Summary: This study investigates the effects of grazing exclusion on soil organic carbon (SOC) accumulation and vegetation recovery. It finds that grazing exclusion can increase the potential for SOC accumulation, and higher annual precipitation is positively correlated with SOC accumulation.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Beatrice Cantoni, Jessica Ianes, Beatrice Bertolo, Selena Ziccardi, Francesco Maffini, Manuela Antonelli
Summary: This study evaluates the performance of ozonation and adsorption as in-series processes compared to standalone processes for the removal of Contaminants of Emerging Concern (CECs) in drinking water. The combination of both processes proves to be more effective than adsorption and ozonation alone. Ozonation improves the adsorption performance of poorly-oxidizable CECs but worsens that of well-oxidizable compounds. This research highlights the importance of considering both processes in the removal of CECs in drinking water treatment plants.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Dan Li, Bingjun Liu, Yang Lu, Jianyu Fu
Summary: A new Standardized compound Drought and Saltwater intrusion Index (SDSI) was developed to detect changes in the severity of CDSEs in six estuaries. The study found that saltwater intrusion plays a dominant role in influencing SDSI severity, and CDSEs vary in frequency, duration and severity among different estuaries.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Yong-Qiang Li, Rui Sun, Chong-Miao Zhang, Zi-Xuan Liu, Rui-tao Chen, Jian Zhao, Hua-dong Gu, Huan-Cai Yin
Summary: In this study, an electron beam excitation multi-wavelength ultraviolet (EBE-MW-UV) system was established and found to have significantly higher microbial inactivation effects compared to single-wavelength UV-LEDs in water. Mechanism analysis revealed that EBE-MW-UV damaged microbial DNA and proteins, and generated additional reactive oxygen species, leading to microbial inactivation.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Kaili Ma, Xinxin Han, Qiujuan Li, Yu Kong, Qiaoli Liu, Xu Yan, Yahong Luo, Xiaopin Li, Huiyang Wen, Zhiguo Cao
Summary: This study reveals that the use of a tryptophan-degrading microbial consortium (TDC) can enhance the hydrolysis efficiency of waste activated sludge (WAS), increasing the yield and quality of short chain fatty acids (SCFAs) and improving the solubilization and release of organic substances from WAS.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Ling Xiong, Rui Li
Summary: Incorporating Ecosystem Service Value (ESV) into land use planning can provide informed land management decisions. This study evaluates the ESV of Guizhou Province in China's karst region. The results show an increase in total ESV over the past two decades due to ecological restoration projects.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
M. Geetha Jenifel
Summary: This article discusses the importance of water and the pollution of freshwater resources, and introduces the use of machine learning models and blockchain technology to predict and protect water quality.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Stanslaus Terengia Materu, Taotao Chen, Chang Liu, Daocai Chi, Meng Jun
Summary: The study showed that H2SO4-modified biochar can reduce P leaching, increase soil available P, and enhance plant P uptake in alternate wetting and drying irrigation systems. Biochar additions B20A and IAWDB20A-M were effective in improving yield, reducing P leaching, and increasing APB.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Amir Nouri, Ali Akbar Zinatizadeh, Sirus Zinadini, Mark Van Loosdrecht
Summary: This study focuses on the development of an air-lift bio-electrochemical reactor (ALBER) with a continuous feeding regime to enhance nitrogen removal from synthetic wastewater. The effect of temperature, hydraulic retention time (HRT), N -NH+4 /TN ratio, and current density on the reactor performance was investigated, and the ALBER achieved a maximum TN removal of 73%. The results suggest that the ALBER has potential for treating industrial wastewater at low temperatures.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Peifang Wang, Guoxiang You, Yang Gao, Juan Chen, Xun Wang, Chao Wang
Summary: This study investigated the ecological processes of microbial communities and N- and P-transformation processes in multistage agricultural drainage ditches. The results showed that the microbial communities were co-shaped by agricultural practices and ditch size, which further governed the N and P removal performance.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Xiaofeng Niu, Huan Wang, Tao Wang, Peiyu Zhang, Huan Zhang, Hongxia Wang, Xianghong Kong, Songguang Xie, Jun Xu
Summary: Microorganisms play a critical role in maintaining ecosystem balance, and environmental stressors can affect the assembly processes of microbial communities. The study found that different stressors have opposite effects on microbial community assembly in water and sediment, and warming has different influences compared to herbicides and nutrients.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Yuqing Tan, Qiming Cheng, Fengwei Lyu, Fei Liu, Linhao Liu, Yihong Su, Shaochun Yuan, Wenyu Xiao, Zhen Liu, Yao Chen
Summary: The exacerbation of global warming, extreme weather events, and rapid urbanization have led to increased flooding in urban areas. China has adopted sponge city as an efficient means of preventing and controlling urban floods. Using a SWMM-FVCOM model, the hydrological reduction and control effect of sponge city construction (SPCC) within a university campus were evaluated. The study found that implementing SPCC effectively mitigates surface runoff and reduces the severity of urban flooding. However, the efficacy of runoff control decreases with longer rainfall return periods.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Zhonghan Chen, Qiuyan Li, Shibo Yan, Juan Xu, Qiaoyun Lin, Zhuangming Zhao, Ziying He
Summary: Tidal rivers are important biochemical reaction channels, receiving carbon from wastewater and agricultural drains, affecting CO2 emissions. Through modeling and data analysis, researchers explored carbon distribution, emissions, and greenhouse effects, emphasizing the potential of river management to change global CO2 emissions under climate change.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
