Article
Engineering, Environmental
Malgorzata Anna Kucharska, SeyedKeyvan Mirehbar, Joanna Agnieszka Ladynska
Summary: This study investigated the efficiency of a novel combined three-step process for the treatment of mature landfill leachate. The results showed high COD removal rates and significant reduction in TOC, absorbance UV254, and color.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
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
Environmental Sciences
Siping Yang, Jia Tang, Xiaoqin Zhang, Aiping Zhang
Summary: In this study, a UV-nZVI-H2O2 system was used to efficiently degrade and mineralize refractory organic matter in landfill leachate using nano zero-valent iron (nZVI) as the Fe2+ source in the Fenton reaction. The optimum conditions were found to be initial pH = 3, UV = 14 W, nZVI = 0.5 g/L, and [H2O2] = 30 mM, resulting in removal efficiencies of 61.38% for total organic carbon, 83.89% for absorbance at 254 nm, and 85.79% for color number. The UV-nZVI-H2O2 system showed the highest removal and mineralization rates compared to other systems, attributed to its higher H2O2 utilization rate of 98.80%. The dominant reactive oxygen species in the UV-nZVI-H2O2 system were HO center dot, with a yield as high as 2007.80 mu M. This study provides theoretical and technical support for the advanced treatment of refractory organic matter in landfill leachate.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Engineering, Chemical
Ana Paula Floriano Santos, Fabio Gozzi, Adriana Evaristo de Carvalho, Keila Roberta Ferreira de Oliveira, Anderson Rodrigues Lima Caires, Rodrigo Pereira Cavalcante, Rebeca Fabbro Cunha, Debora Antonio da Silva, Diego Roberto Vieira Guelfi, Lucas de Melo da Silva, Thalita Ferreira da Silva, Gleison Antonio Casagrande, Silvio Cesar de Oliveira, Amilcar Machulek Junior
Summary: This study investigated the use of solar photo-Fenton-like processes to degrade sanitary landfill leachates. The results showed that using Fe3+ as a coagulant combined with the photo-Fenton-like method effectively removed COD and DOC, improving the biodegradability and reducing the toxicity of the effluent. This method holds promising potential as a treatment method for wastewater.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Environmental
Electra Polatidou, Konstantinos Azis, Christos Polatides, Nikolaos Remmas, Spyridon Ntougias, Paraschos Melidis
Summary: This study evaluated the efficiency of electrochemical treatment and O-3/UV/H2O2 combination in purifying mature landfill leachate. The results showed that electrochemical treatment combined with precipitation was the most effective treatment scheme, resulting in significant reduction of nutrients and color.
JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART A-TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING
(2022)
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
Environmental Sciences
Cheng Long, Bin Zhu, Wei Liu, Qixuan Li
Summary: Coagulation combined with the electro-Fe-0/H2O2 reaction was developed to efficiently treat refractory organics in landfill leachate effluent. The optimal conditions were determined, leading to high removal efficiencies of COD and chromaticity. The process effectively degraded humic and fulvic acids and enhanced biodegradability, with a low operating cost.
Article
Environmental Sciences
Pengfei Jin, Zhiguo Cao, Bin He
Summary: In this study, Cu0@CuOx@nitrogen-doped graphitic carbon (Cu0@CuOx-NC) decorated Zn2In2S5 was prepared for in-situ production and activation of hydrogen peroxide (H2O2), achieving efficient photocatalytic self-Fenton degradation of tetracycline (TC). The 5 wt% Cu0@CuOx-NC/Zn2In2S5 (CuZS-5) generated a high yield of H2O2 (0.13 mmol L-1) under visible light irradiation, and Cu0@CuOx-NC could consume H2O2 in-situ to generate hydroxyl radicals (center dot OH), accelerating the oxidation of TC. This study shows a promising strategy for eco-friendly pollutant degradation in wastewater.
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
Zhepei Gu, Weiming Chen, Chen He, Qibin Li
Summary: This study investigated the transformation characteristics of dissolved organic matter (DOM) in leachate nanofiltration concentrate (NFC) during a combined flocculation-O-3/H2O2 process using ESI FT-ICR MS. The results showed that flocculation and O-3/H2O2 process could remove different types of DOM compounds and further degrade DOM that was resistant to flocculation.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Materials Science, Ceramics
Lingyun Zhou, Qing Chang, Chaorui Xue, Ning Li, Caihong Hao, Jinlong Yang, Shengliang Hu
Summary: This study investigates the modification effect of graphitic carbon nitride (g-C3N4) catalyst and finds that the introduction of trace-level copper can enhance its Fenton-like catalytic activity and photo-Fenton synergistic catalytic activity. Additionally, the presence of carbon dots (CDs) improves the catalytic performance and stability in degrading organic pollutants.
CERAMICS INTERNATIONAL
(2022)
Article
Engineering, Environmental
Yong Chen, Yuangang Li, Ningdan Luo, Weike Shang, Shaosen Shi, Huajing Li, Yaodong Liang, Anning Zhou
Summary: The study developed a H2O2-free photo-Fenton process using BiVO4 as a semiconductor and Fe3+ as an additive to effectively degrade antibiotics. Comparisons between H2O2-free photo-Fenton and photocatalytic reactions showed the former had higher degradation rates under optimized conditions. The study deepened the understanding of mechanism and kinetics between photo-Fenton and photocatalytic reactions on the same catalyst, and highlighted the potential of H2O2-free photo-Fenton reactions on other semiconductors in treating wastewater with various antibiotics.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Ane Urtiaga, Sonia Gomez-Lavin, Alvaro Soriano
Summary: This work investigates the electrochemical treatment of landfill leachates using boron doped diamond (BDD) anodes. The results show that in the absence of ammonia, the electrogenerated chlorine oxidants enhance the removal of chemical oxygen demand but have limited effect on the mineralization of persistent organic pollutants. Furthermore, the study examines the removal of poly- and perfluoroalkyl substances (PFAS) in the leachate, with varying efficiencies depending on the current density used.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Environmental Sciences
Chao Gong, Jinli Zhai, Xi Wang, Wenjie Zhu, Daoli Yang, Yongming Luo, Xiaoya Gao
Summary: In this study, a heterogeneous photo-Fenton and photo-catalytic system was constructed using oxide pyrite (FeS2/Fe2O3) mineral and organic acids. The system enhanced the degradation efficiency of carbamazepine (CBZ) through the synergistic photo-Fenton and photo-catalytic reaction. This investigation provides an innovative strategy for the removal of organic pollutants using natural minerals.
Article
Engineering, Environmental
Ke Feng, Shiqi Mu, Feiyan Fang, Mingde Xie
Summary: The efficiency and mechanism of the UV/nFe(0)/H2O2 system in removing refractory organics from membrane bioreactor effluent were investigated. Under certain conditions, the system effectively removed organics and reduced their properties. Various iron-based oxides were formed on the surface of nano zero-valent iron, which contributed to the removal of refractory organics. UV radiation enhanced the redox cycle of iron, thereby enhancing the removal of organics.
WATER ENVIRONMENT RESEARCH
(2022)
Article
Environmental Sciences
Jan Bogacki, Piotr Marcinowski, Ewa Zapalowska, Justyna Maksymiec, Jeremi Naumczyk
ENVIRONMENTAL TECHNOLOGY
(2017)
Article
Chemistry, Multidisciplinary
Jan Bogacki, Piotr Marcinowski, Jaroslaw Zawadzki, Maciej Majewski, Sridhar Sivakumar
PRZEMYSL CHEMICZNY
(2017)
Article
Engineering, Chemical
Jan Bogacki, Piotr Marcinowski, Maciej Majewski, Jaroslaw Zawadzki, Sridhar Sivakumar
Article
Environmental Sciences
Jan Bogacki, Piotr Marcinowski, Balkess El-Khozondar
Article
Engineering, Environmental
Adam Muszynski, Piotr Marcinowski, Justyna Maksymiec, Klaudia Beskowska, Ewa Kalwarczyk, Jan Bogacki
JOURNAL OF HAZARDOUS MATERIALS
(2019)
Article
Engineering, Chemical
Piotr Marcinowski, Dominika Bury, Monika Krupa, Dominika Sciezynska, Prasanth Prabhu, Jan Bogacki
Article
Chemistry, Physical
Jan Bogacki, Piotr Marcinowski, Dominika Bury, Monika Krupa, Dominika Sciezynska, Prasanth Prabhu
Summary: The study demonstrates that the H2O2/Fe3O4/Fe2O3/Fe-0 and UV/H2O2/Fe3O4/Fe2O3/Fe-0 processes are effective methods for wastewater treatment, with the UV process proving to be more effective. Chromatographic analysis can be used to detect and identify pollutants in wastewater.
Proceedings Paper
Energy & Fuels
Piotr Marcinowski, Jan Bogacki, Maciej Majewski, Jaroslaw Zawadzki, Sridhar Sivakumar
ENERGY AND FUELS 2018
(2019)
Article
Engineering, Environmental
Jeremi Naumczyk, Piotr Marcinowski, J. Bogacki
ENVIRONMENT PROTECTION ENGINEERING
(2017)
Article
Environmental Sciences
Jan Pawel Bogacki, Piotr Marcinowski, Jeremi Naumczyk, Piotr Wilinski
ARCHIVES OF ENVIRONMENTAL PROTECTION
(2017)
Article
Engineering, Chemical
Piotr Robert Wilinski, Piotr Pawel Marcinowski, Jeremi Naumczyk, Jan Bogacki
DESALINATION AND WATER TREATMENT
(2017)
Article
Engineering, Chemical
Piotr Marcinowski, Ewa Zapalowska, Justyna Maksymiec, Jeremi Naumczyk, Jan Bogacki
DESALINATION AND WATER TREATMENT
(2018)
