Article
Engineering, Environmental
Mengmeng Xu, Suding Yan, Simei Sun, Zhiran Ni, Wenzhong Wu, Jingyu Sun
Summary: This study investigated the mechanism, kinetics, and toxicity of insect repellent DEET in water environment using quantum chemical calculations. The results showed that the degradation of DEET initiated by •OH and SO4• from advanced oxidation processes had good performance. The degradation of DEET was mainly caused by hydrogen abstraction and addition.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Engineering, Chemical
Jingjing Yao, Jiayi Wen, Haipu Li, Ying Yang, Hui Ying Yang
Summary: The complexation of tetracyclines with Fe species plays a significant role in the removal of tetracyclines by ferrate. Experimental results show that the complexation of tetracyclines with Fe3+ contributes to 79% of the overall removal, followed by oxidation (11%) and adsorption/flocculation (10%). Thermodynamic and kinetic calculations suggest that complexation reactions between Fe3+ and tetracyclines are more likely to occur than oxidation reactions between ferrate and hydroxyl radicals. The complexation rates of tetracyclines with Fe3+ determine the removal of multiple tetracyclines by ferrate, highlighting the importance of considering complexation in the removal of pollutants.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Rajshree Ghosh Biswas, Mark P. Croxall, Reece T. Lawrence, Ronald Soong, M. Cynthia Goh, Andre J. Simpson
Summary: Comprehensive Multiphase NMR (CMP-NMR) is a new technique that allows simultaneous observation of different phases and provides chemical specificity. It was used to re-examine the photocatalysis of phenol on titanium dioxide (P25 TiO2) and gain insights into the reaction occurring in different regions between the catalyst and the solution.
Article
Engineering, Environmental
Sicheng Gong, Chao Ding, Jia Liu, Kun Fu, Yishuai Pan, Jun Shi, Huiping Deng
Summary: Nitrate photolysis can produce reactive species that affect the fate of coexisting micropollutants. In the presence of nitrate, the photodegradation of naproxen was found to be mainly influenced by hydroxyl radicals and reactive nitrogen species, with different water matrix components impacting the decomposition kinetics. The transformation of naproxen led to the formation of toxic products, increasing the overall toxicity during degradation.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Biochemistry & Molecular Biology
Ewa Adamek, Ewa Masternak, Dominika Sapinska, Wojciech Baran
Summary: The study focused on the degradation of sulfonamides used in veterinary medicine through the Fenton process, showing that UVa irradiation can enhance reaction efficiency. Furthermore, it was found that increasing the dose of H2O2 may lead to an increase in the ecotoxicity of the post-reaction mixture.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Engineering, Environmental
Tingting Li, Song Lu, Wenwen Lin, Hejun Ren, Rui Zhou
Summary: This study investigated the kinetics and mechanisms of heat-activated persulfate degradation of ofloxacin (OFX). The results showed that the degradation efficiency of OFX could be greatly enhanced by increasing temperature and persulfate dosage. The presence of common coexisting water matrices inhibited the degradation of OFX.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Jie-Yu Yue, Yu-Tong Wang, Xiu-Li Ding, Yan-Fei Fan, Li-Ping Song, Peng Yang, Yu Ma, Bo Tang
Summary: Se-doped PYE-COF exhibited enhanced photocatalytic performance with 100% reduction ratio of Cr(VI) and at least 5 cycles of recyclability, indicating the potential for high-performance photocatalysts through single-atom substitution in acceptors.
MATERIALS CHEMISTRY FRONTIERS
(2022)
Article
Engineering, Environmental
Gang Wang, Peng Wang, Huiling Liu, Jing Wang, Xiaohu Dai, Yanjun Xin
Summary: The study investigated the degradation kinetics and mechanisms of spiramycin under thermally activated peroxydisulfate oxidation process in aqueous solution. It was found that the degradation rate of spiramycin could be expressed by a kinetic rate equation. Sulfate radical and hydroxyl radical were identified as the dominant reactive species, with the former's contribution decreasing with an increase in pH value. Additionally, the presence of humic acid and inorganic anions negatively impacted the degradation of spiramycin.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Marcus S. Lehnertz, Joel B. Mensah, Regina Palkovits
Summary: In this study, a novel protocol for catalytic depolymerisation of bio-based polyhydroxybutyrate and polylactic acid over Ru/CeO2 was presented. The corresponding monomers, 3-hydroxybutyric acid and lactic acid, were obtained with high yields of 79% and 94% respectively. Furthermore, the transformation of a mixture of both biopolyesters was also possible with comparable results.
Article
Engineering, Chemical
Shaoqing Zhang, Jia-Qian Jiang, Michael Petri
Summary: The study found that both ozone and ferrate can achieve over 99% reduction in BS concentration and up to 22.5% reduction in DOC when dosed at 0.036 mM. Vibrio fisheri toxicity decreased after ozonation or ferrate oxidation, and mass spectra analysis revealed proposed degradation pathways and identified oxidation products (OPs). The research showed that ferrate treatment is comparable to ozonation in removing BS, and further studies are needed to explore BS removal in different water compositions and to establish more comprehensive operational databases for ferrate oxidation and/or ozonation.
Article
Chemistry, Analytical
Jose Wellithom Viturino da Silva, Jose Izak Ribeiro, Larissa Xavier de Souza, Katia Aparecida da Silva Aquino, Juliana Kishishita, Jose Lamartine Soares Sobrinho, Leila Bastos Leal, Whocely Victor de Castro, Davi Pereira de Santana, Danilo Cesar Galindo Bedor
Summary: This study systematically investigated the photostability of TCZ, revealing extensive degradation in solution and identifying four degradation products. The degradation process follows first-order kinetics, with the potential to cause ocular toxicity identified through product characterization.
JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS
(2022)
Article
Engineering, Environmental
Yidan Luo, Guangying Shi, Shuohan Yu, Zitao Liu, Jiawei Yin, Mingshan Xue, Qing Sun, Fang -Fang Shen, Xibao Li, Zuozhu Yin, Chan Xie, Bin Gao
Summary: In this study, a high-efficient MIL-88B(Fe)/ZnTi-LDH high-low junction photocatalyst was successfully synthesized and applied for the photocatalytic degradation of tetracycline (TC). The combination of MIL-88B(Fe) and ZnTi-LDH created an internal electric field and high-low junction, leading to enhanced photocatalytic activity. The optimized MZ-30% sample exhibited the highest photocatalytic degradation efficiency and adsorption capacity for TC.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Environmental Sciences
Honghai Xue, Jinying Li, Genbao Zhang, Ming Li, Binshuo Liu, Chunli Kang
Summary: Ibuprofen (IBP) can be efficiently removed using UV/SPC technology, with a degradation rate of 100%. The primary degradation pathways of IBP involve hydroxylation and decarboxylation. Organic matter and inorganic ions in water matrices can inhibit the degradation of IBP to varying degrees.
Article
Chemistry, Physical
Abhradeep Majumder, Ashok Kumar Gupta, Mika Sillanpaa
Summary: The hybrid iron modified aluminum-doped ZnO-based microporous photocatalyst (Al-ZnO/Fe) has been prepared to address the rapid recombination of photogenerated electron-holes and the difficulty in separating the photocatalysts from the aqueous medium. The photocatalyst showed efficient degradation of carbamazepine and could be activated under solar irradiation. The study also revealed the significant role of superoxide radicals and hydroxyl radicals in the degradation process.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Engineering, Environmental
Yegyun Choi, Huan He, Michael C. Dodd, Yunho Lee
Summary: The study investigated the degradation kinetics of antibiotic resistance genes using different disinfectants, revealing varied degradation mechanisms for different types of ARGs. Furthermore, differences in degradation rates for extracellular and intracellular ARGs were observed at different oxidant exposures, possibly due to decreased DNA recovery efficiency and/or the presence of MRSA aggregates protected from disinfectants.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Review
Chemistry, Physical
Afdhal Yuda, Anchu Ashok, Anand Kumar
Summary: This paper reviews the synthesis of anode electrocatalysts for methanol oxidation reaction, with a focus on their activity and durability. It compares noble and non-noble metal catalysts and examines the effects of manipulating catalysts through various factors. It also discusses the challenges and approaches in making direct methanol fuel cells a reliable source of energy.
CATALYSIS REVIEWS-SCIENCE AND ENGINEERING
(2022)
Article
Energy & Fuels
Anand Kumar, Ahmed A. A. Mohammed, Mohammed A. H. S. Saad, Mohammed J. Al-Marri
Summary: Nickel incorporation in Cu/fumed-SiO2 catalyst has been shown to improve the catalytic performance for CO2 reduction reaction, with high stability observed for up to 42 hours time on stream (TOS). The addition of Ni enhanced the catalytic activity and showed potential for methane formation, without any signs of deactivation.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Review
Chemistry, Physical
Afdhal Yuda, Anand Kumar
Summary: This review summarizes the performance of electrocatalysts based on two-dimensional graphitic carbon nitride in methanol oxidation reactions. It describes the structure, synthesis methods, and post-synthesis treatments of g-C3N4, and evaluates their performance. Finally, the review discusses the challenges and possible solutions for the future development of DMFC.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Energy & Fuels
Rahul R. Bhosale, Suliman Rashid
Summary: The solar-to-fuel energy conversion efficiency of the MgxFe3-xO4 based CO2 splitting cycle was estimated at varying temperatures, showing that different redox steps can affect the efficiency. Various factors including the heat energy required to heat inert gas and CO2, as well as the heat penalty associated with gas separations, were taken into account in the efficiency analysis.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Chemistry, Physical
Parisa Ebrahimi, Anand Kumar, Majeda Khraisheh
Summary: The performance of Cu/CeO2 catalyst in the reverse water-gas shift reaction was investigated using Solution Combustion Synthesis (SCS) technique. The results showed that the addition of a small amount of copper improved the catalytic activity and stability, leading to high conversion of CO2 and selectivity towards CO.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Yahia H. Ahmad, Assem T. Mohamed, Hany A. El-Sayed, Anand Kumar, Siham Y. Al-Qaradawi
Summary: Fine-tuning of materials properties, especially catalytic properties, through innovative synthesis procedures has attracted significant research interest. This study investigates the impact of different synthesis methods on the catalytic performance of Ni/La2O3 catalysts for dry reforming of methane. The results demonstrate that the chosen synthesis techniques significantly affect the morphology, metal support interaction, and surface area of the catalysts, leading to variation in their performance for dry reforming.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Parisa Ebrahimi, Anand Kumar, Majeda Khraisheh
Summary: Thermodynamic calculations were performed on water gas shift reaction with the addition of chemical additives such as ammonia, hydrazine, and urea. The results showed that urea has the highest potential for hydrogen enrichment but also increases carbon formation, while ammonia and hydrazine suppress carbon formation and assist in hydrogen production. Hydrazine was found to be the most effective in reducing carbon.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Review
Chemistry, Physical
Nikhil Dhabarde, Josephine Selvaraj, Afdhal Yuda, Anand Kumar, Vaidyanathan Ravi Subramanian
Summary: This review analyzes the research conducted in the past five years on the use of carbon-based materials as supports for CO2 conversion using the photo (electro)catalytic approach. It presents various types of photocatalyst materials and discusses the advantages of reduced graphene oxide (rGO) and its applications in other fields.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Electrochemistry
Khulood Logade, Sadiyah Shafath, Anand Kumar, Ibrahim Abu Reesh
Summary: This study reports on the electrocatalytic properties of Ag-M/C (M = Cu, Zn, Fe, Cr, Mn) catalysts synthesized via the solution combustion synthesis (SCS) method for methanol oxidation reaction (MOR). The morphological properties of the synthesized catalysts were analyzed using SEM, EDX, TEM, XRD, and XPS techniques. AgCu/C was found to be the most porous catalyst with high electrocatalytic activity. The study also demonstrated the power-law dependence of the catalyst on methanol concentration and the stability of the catalyst for at least 20 hours.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Environmental Sciences
Rahul R. Bhosale, Ram B. Gupta, Rajesh Shende
Summary: This study examines the solar thermochemical CO2 splitting process using a redox ZnO/Zn cycle. The focus is on exploring the influence of reduction temperature, molar flow rate, and energy required for gas separation on the solar-to-fuel energy conversion efficiency. The highest conversion efficiency is achieved at a reduction temperature of 2000 K.
ENVIRONMENTAL RESEARCH
(2022)
Review
Chemistry, Physical
Parisa Ebrahimi, Anand Kumar, Majeda Khraisheh
Summary: The catalytic conversion of CO2 to CO by the reverse water gas shift (RWGS) reaction, followed by established synthesis gas conversion technologies, is a practical technique for converting CO2 to valuable chemicals and fuels in industrial settings. This study reviews the use of ceria-supported active metal catalysts in the RWGS reaction and explores the fundamental features of ceria. It also examines the RWGS reaction mechanism, reaction kinetics on supported catalysts, and the importance of oxygen vacancies. Recent advances in CeO2 supported metal catalyst design strategies are identified and assessed to understand the impact of physicochemical parameters on catalytic performance.
Article
Chemistry, Physical
Parisa Ebrahimi, Anand Kumar, Majeda Khraisheh
Summary: The catalytic conversion of CO2 through the reverse water gas shift reaction over transition metal nanoparticles supported on lanthanum was evaluated. The results showed that Cu-La2O3, Ni-La2O3, and CuNi-La2O3 catalysts exhibited maximum CO2 conversions of 57%, 68%, and 74%, respectively, at 600°C, with excellent stability and low carbon deposition rate. Among them, only the 1 wt% Cu-La2O3 catalyst showed 100% CO selectivity at all temperatures, while nickel-containing catalysts exhibited selectivity for methane along with carbon monoxide. This study demonstrates the promising potential of transition metal catalysts on lanthanum oxide support for the reverse water gas shift reaction and other hydrogenation reactions.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Correction
Electrochemistry
Khulood Logade, Sadiyah Shafath, Md. Abdul Matin, Anand Kumar, Ibrahim Abu Reesh
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Energy & Fuels
Rahul R. Bhosale, Sayma Akhter, Ram B. Gupta, Rajesh V. Shende
Summary: The thermodynamic efficiency of MnFe2O4-based CO2 splitting (CDS) cycle was analyzed using HSC Chemistry software. It was found that increasing the flow rate of inert gas reduces the reduction temperature but increases the thermal energy required to drive the cycle due to the additional energy required to heat the inert gas. Incorporating gas-to-gas heat recovery significantly reduces the thermal energy required to drive the cycle and improves the solar-to-fuel energy conversion efficiency.
Review
Energy & Fuels
Rahul R. Bhosale
Summary: Metal oxide based solar thermochemical H2O and CO2 splitting is a promising method for producing H2 and syngas. Ceria and doped ceria materials are considered the best alternatives due to their high O(2) storage capacity, fast oxidation kinetics, and good stability. A review paper has been published to highlight the significant findings in using pure ceria and doped ceria for the WS and CDS operations.
