Article
Engineering, Chemical
Joanna Muszynska
Summary: The effectiveness of using potassium ferrate(VI) (K2FeO4) for pre-treatment of landfill leachate was evaluated in this study. The results showed that K2FeO4 exhibited high removal efficiency for color and UVA254, but slightly lower for chemical oxygen demand (COD). A mathematical model was developed based on the experimental results to describe the oxidation process of landfill leachate with K2FeO4 as an oxidant and coagulant.
DESALINATION AND WATER TREATMENT
(2023)
Article
Biotechnology & Applied Microbiology
Xingqiao Feng, Riya Jin, Yina Qiao, Zengdi He, Jiaoqin Liu, Zhumei Sun, Yufan Zhang, Mengye Jia, Jingshuai Gao, Anlong Wang, Chengjie Guo
Summary: This study explores the feasibility of combining hydrodynamic cavitation (HC) and potassium ferrate (K2FeO4) for the treatment of landfill leachate. The results show that HC/K2FeO4 treatment effectively reduces the COD, UV254, and total organic carbon of the leachate, and improves its biodegradability.
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
(2022)
Article
Environmental Sciences
Maciej Thomas, Przemyslaw Drzewicz, Angelika Wieckol-Ryk, Balamurugan Panneerselvam
Summary: Treatment of carwash wastewater with potassium ferrate (VI) under optimized conditions (pH 3.5, 0.328 g/L K2FeO4, 48 min) resulted in significant reduction of chemical oxygen demand (70.3%), total organic carbon (58.9%), total nitrogen (73.3%), total phosphorus (82.0%), as well as improvement in odor. Compared to FeCl3, potassium ferrate (VI) was more effective in reducing bacterial counts and proteolytic bacteria.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Mining & Mineral Processing
Yongxing Zheng, Yusong Huang, Panjin Hu, Xianhui Qiu, Jinfang Lv, Lingyun Bao
Summary: This study investigated the effects of potassium ferrate (PF) on the flotation performances of chalcopyrite and galena. The results showed that PF significantly depressed galena while having little effects on chalcopyrite. Zeta potential tests revealed that PF induced the formation of hydrophilic species on galena surface. Chemical adsorption of industrial grade O-isopropyl-N-ethyl thionocarbamate (IPETC) was observed on PF-treated chalcopyrite and galena surfaces. Contact angle measurements indicated a decrease in the contact angle of galena surface with the addition of PF. Impedance tests showed that PF increased the impedance of galena surface. XPS analyses revealed the formation of hydrophilic species on galena surface, decreasing its floatability in the presence of PF. On the other hand, chalcopyrite maintained its floatability due to the formation of hydrophobic species. A descriptive model for the reaction of PF with chalcopyrite and galena was proposed.
INTERNATIONAL JOURNAL OF MINING SCIENCE AND TECHNOLOGY
(2023)
Article
Engineering, Environmental
Yanhui Cheng, Fukang Zheng, Huiyu Dong, Fei Pan, Lei Sun, Nevskii Aleksandr, Xiangjuan Yuan
Summary: This study investigated the advanced oxidation technology of ozone and ferrate (ozone/Fe (VI)) for the degradation of micropollutants. The results showed that ozone/Fe(VI) process efficiently degraded sulfamethoxazole (SMX) and diclofenac sodium (DCF), with higher degradation efficiency under acidic conditions. Scavenging and probe experiments identified ozone, Fe(VI), OH, and Fe(IV)/Fe(V) species as the main oxidants for SMX and DCF degradation. The study also identified the transformation products of SMX and DCF and evaluated their ecotoxicity. These findings have important implications for water treatment using the ozone/Fe(VI) process.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Review
Engineering, Environmental
Baoyi Tan, Lei He, Zhenqing Dai, Ruikun Sun, Shiqi Jiang, Zifan Lu, Yanqiu Liang, Lei Ren, Shengli Sun, Yueqin Zhang, Chengyong Li
Summary: Landfill leachate, a secondary pollutant in traditional waste treatment, poses a potential threat to environmental safety and human health due to its complexity and biotoxicity. Bioremediation technology, utilizing natural life activities and behaviors of organisms, offers a greener and more cost-efficient approach to purify landfill leachate and promote soil and water recycling.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Chemistry, Analytical
Yanling Li, Xi Chen, Li Liu, Peng Liu, Zhengzhong Zhou, Huhetaoli, Youqing Wu, Tingzhou Lei
Summary: This study investigates the thermal behavior of landfill leachate sludge (LLS), the preparation and properties of LLS-based biochar (SC), and the adsorption of chromium (Cr) from water using SC900. It is found that SC900 shows high adsorption capacity and stability for Cr(VI) removal, making it an effective adsorbent for environmental wastewater treatment.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2022)
Article
Environmental Sciences
Tahereh Rookesh, Mohammad Reza Samaei, Saeed Yousefinejad, Hassan Hashemi, Zahra Derakhshan, Fariba Abbasi, Mahrokh Jalili, Stefanos Giannakis, Muhammad Bilal
Summary: In this study, electrocoagulation was used to treat landfill leachate and remove COD, NH4+, TDS, TSS, turbidity, and color. The effects of various variables on the treatment efficiency were investigated. Results showed that electrocoagulation with the Fe/Gr electrode had excellent performance in removing COD and NH4+, with favorable indicators.
Article
Engineering, Chemical
Qiuye Jin, Dingyu Ji, Yanghan Chen, Zhaomin Tang, Yongsheng Fu
Summary: The study investigated the effect of pH and oxidant dosage on the removal rate of levofloxacin (LEVO) using potassium ferrate (Fe(VI)) as an oxidant, and studied the degradation kinetics of LEVO. It was found that CuS as a catalyst could significantly improve the Fe(VI)-mediated degradation of LEVO, achieving a removal rate of 96.9% in 30 seconds. The surface characteristics of CuS and the effects of Cu2+ and S2- leached from CuS in Fe(VI)-CuS system were analyzed, confirming that Fe(V)/Fe(IV) play a key role in the degradation process.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Chemical
Shan Wang, Yingxin Xu, Shufen Chen, Baoyou Shi, Haoming Xu, Wande Ding, Xin Huang, Kefeng Zhang
Summary: This study aimed to improve the removal efficiency of turbidity, algae, and organic matter by using a novel filter aid compound and pre-oxidation. The results showed that the method effectively reduced turbidity and removed chlorophyll a and 2-methylisoborneol. The study provides guidance for treatment of algae-laden surface water.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Bhavya Joshi, Ahmed M. E. Khalil, Tanveer A. Tabish, Fayyaz A. Memon, Hong Chang, Shaowei Zhang
Summary: This study demonstrates the successful oxidation of graphite using ferrate(VI) compounds and the subsequent reduction to produce graphene. The results confirm the potential of ferrate(VI) compounds for environmentally-friendly oxidation of graphite and removal of contaminants from water.
Article
Agricultural Engineering
Jiawei Hu, Zhuo Li, Zhigen Wu, Wenquan Tao
Summary: This study proposed a novel sludge pretreatment technology by combining freezing with potassium ferrate (PF) to enhance methane yield from sludge anaerobic digestion. Experimental results showed a significant increase in methane production and hydrolysis rate after the combined pretreatment, effectively disrupting microbial structure in sludge.
BIORESOURCE TECHNOLOGY
(2021)
Article
Environmental Sciences
Salih Tasci, Ayse Ozguven, Burcin Yildiz
Summary: This study investigated the efficacy of the heterogeneous Fenton process for treating landfill leachate, optimizing the operating parameters and confirming the significant impact of variables on COD removal efficiency. The results showed that higher pH and chemical agents do not increase the COD removal efficiency, and the study proves the applicability of multi-response optimization for addressing environmental problems related to landfill leachate treatment.
WATER AIR AND SOIL POLLUTION
(2021)
Article
Environmental Sciences
Hangli Zhang, Shujuan Wang, Ji Shu, Hongyu Wang
Summary: This study investigates the removal of Doxycycline (DOX) using potassium ferrate (Fe(VI)) and montmorillonite. The results show that increasing Fe(VI) dosage enhances DOX removal, with the optimal condition observed at a molar ratio of 30:1 ([Fe(VI)]:[DOX]) and pH 7. The reaction between DOX and Fe(VI) follows second-order kinetics. Montmorillonite has a limited promotion effect on DOX adsorption, with an increase in temperature and decrease in pH. The simultaneous addition of Fe(VI) and montmorillonite shows the best synergistic effect (97% DOX removal).
Article
Materials Science, Paper & Wood
Abudu Ballu Duwiejuah, Elijah Yinigani Ayine, Joseph Payne
Summary: This study investigated the efficiency of guinea fowl eggshells as a low-cost adsorbent for the removal of cadmium and nickel from landfill leachate. Results showed that the adsorption efficacy of cadmium and nickel by guinea fowl eggshells were 90.5% to 96.5% and 96.1% to 99.3%, respectively. The Langmuir isotherm model was better fitted to the experimental data than the Freundlich isotherm model.
Article
Environmental Sciences
Maciej Thomas, Przemyslaw Drzewicz, Angelika Wieckol-Ryk, Balamurugan Panneerselvam
Summary: Treatment of carwash wastewater with potassium ferrate (VI) under optimized conditions (pH 3.5, 0.328 g/L K2FeO4, 48 min) resulted in significant reduction of chemical oxygen demand (70.3%), total organic carbon (58.9%), total nitrogen (73.3%), total phosphorus (82.0%), as well as improvement in odor. Compared to FeCl3, potassium ferrate (VI) was more effective in reducing bacterial counts and proteolytic bacteria.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Environmental Sciences
P. Balamurugan, S. Pauline, M. Kirubakaran, M. Thomas
Summary: This study assessed the impact of four carrier materials on the treatment efficiency of distillery spent wash water using an Inverse Fluidized Bed Reactor (IFBR), revealing that expanded perlite was the most effective. The method could be easily implemented in industrial practice to reduce the negative environmental impact of production plants.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2022)
Article
Environmental Sciences
Balamurugan Panneerselvam, Kirubakaran Muniraj, Chaitanya Pande, Nagavinothini Ravichandran, Maciej Thomas, Shankar Karuppannan
Summary: The study evaluates the groundwater quality and nitrate contamination risk in a industrialized region of South India, finding that rock-water interaction and modern agricultural activities contribute to water quality degradation and nitrate concentration increases. Children are at the highest risk of exposure to elevated nitrate levels among the population exposed to contaminated groundwater.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Engineering, Environmental
Balamurugan Panneerselvam, Kirubakaran Muniraj, Karunanidhi Duraisamy, Chaitanya Pande, Shankar Karuppannan, Maciej Thomas
Summary: The present study aims to assess the risk of groundwater contamination by nitrate and evaluate its suitability for domestic purposes in the Palani region of South India. The study analyzed various groundwater quality parameters and found that a significant portion of the study area is contaminated, with higher health risks for children and women. The major sources of contamination include household discharge and excessive fertilizer use in agriculture.
ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
(2023)
Article
Geochemistry & Geophysics
Dorota Kaczor-Kurzawa, Irena Wysocka, Adam Porowski, Przemyslaw Drzewicz, Emilia Vassileva
Summary: This study describes the occurrence and distribution of rare earth elements (REEs) in mineral and thermal waters in the Quaternary, Mesozoic, and Permian aquifers of the Polish Lowlands. The study found that the groundwater samples had low concentrations of REEs and showed different patterns of REE distribution. This provides insights into the fractionation of REEs between water and rocks and the basic hydrogeochemical processes shaping the chemistry of waters.
JOURNAL OF GEOCHEMICAL EXPLORATION
(2022)
Article
Green & Sustainable Science & Technology
Arkadiusz Bauerek, Jean Diatta, Lukasz Pierzchala, Angelika Wieckol-Ryk, Alicja Krzemien
Summary: The study aimed to use industrial by-products generated in coal mines and coal-fired power plants as components for artificial soils to reclaim degraded areas. The results showed that the substitutes had sufficient organic matter and nutrients to support plant growth, and the substitutes without fly ash from biomass combustion had lower phytotoxicity. Salt and trace elements had an impact on the germination and growth of both substitutes and plants.
Article
Biochemistry & Molecular Biology
Joanna Kuc, Maciej Thomas, Iwona Grochowalska, Rafal Kulczyk, Gabriela Mikosz, Fabian Mrozek, Dagmara Janik, Justyna Korta, Karolina Cwynar
Summary: This research investigated the removal of Total Organic Carbon (TOC) and various pharmaceuticals from surface water using coagulation. The study found that the application of Design of Experiments (DOE) and Response Surface Methodology (RSM) with aluminum chlorohydrate (ACH) as a coagulant was effective in reducing the concentrations of the studied pharmaceuticals. The findings suggest that ACH can be used as an optional reagent for removing pharmaceutical contaminants from water.
Article
Biochemistry & Molecular Biology
Maciej Thomas, Zuzana Melichova, Matej Suranek, Joanna Kuc, Angelika Wieckol-Ryk, Pawel Lochynski
Summary: In this research, the combination of lime (Ca(OH)(2)) and sodium trithiocarbonate (Na2CS3) was studied as precipitation agents for the removal of zinc from concentrated galvanic wastewater. Central Composite Design (CCD) and response surface methodology (RSM) were used to optimize the treatment process. The use of Ca(OH)(2) and Na2CS3 resulted in a 99.99% decrease in zinc concentration in treated wastewater, as well as improvements in other physicochemical parameters. The application of Ca(OH)(2) and Na2CS3 also reduced the inhibition of activated sludge dehydrogenase and showed positive effects on seed germination and plant growth.
Article
Green & Sustainable Science & Technology
Abdelfattah Amari, Heba Saed Kariem Alawameleh, Mubeen Isam, Mohammed Abdul Jaleel Maktoof, Haitham Osman, Balamurugan Panneerselvam, Maciej Thomas
Summary: So far, a significant amount of research has been conducted to investigate the equilibrium condition of the adsorption process; however, there is a lack of comprehensive study on evaluating the surface adsorption properties of MOFs. As a result, the adsorption mechanism and equilibrium capacity of MOFs remain not fully understood. Moreover, the mass transfer mechanism is still unknown, making it impossible to predict the adsorption process using MOFs.
Article
Environmental Sciences
Pawel Lejwoda, Henryk Swinder, Maciej Thomas
Summary: The article presents research results on the leachability of heavy metals (cadmium, nickel, chromium, cobalt, lead, and copper) from solid waste generated during the industrial treatment of wastewater from metal surface treatment plants. Various precipitants were used and the leaching process was tested with artificial acid rain and salt water. The study found that certain precipitants posed a risk to the environment, while others were more stable and did not pose a potential hazard.
ENVIRONMENTAL MONITORING AND ASSESSMENT
(2023)
Article
Engineering, Environmental
Pawel Lejwoda, Henryk Swinder, Maciej Thomas
Summary: The article assesses the mobility of heavy metals in galvanic wastewater treatment using hydroxides and sulphur compounds. The study found that these chemicals can effectively remove heavy metals, with DMDTC being the most efficient. These findings are significant for predicting metal mobility, assessing risks, and supporting removal and management strategies.
ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
(2023)
Article
Environmental Sciences
Balamurugan Panneerselvam, Nagavinothini Ravichandran, Umesh Chandra Dumka, Maciej Thomas, Warit Charoenlerkthawin, Butsawan Bidorn
Summary: Traditional methods for air quality analysis and prediction based on historical data are unsatisfactory. This study reconstructed a prediction model for PM2.5 and PM10 considering different meteorological conditions, and found that seasonal variation is a primary factor influencing air pollutant concentrations in urban areas. The results suggest that these novel methods can enhance the accuracy of particulate matter prediction and influence policy-making for air quality protection.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)