Article
Chemistry, Multidisciplinary
R. Soto, C. Fite, E. Ramirez, J. Tejero, F. Cunill
Summary: The deactivating effect of acetonitrile (ACN) and ACN/water mixtures on the simultaneous syntheses of ethyl tert-butyl ether (ETBE) and tert-amyl ethyl ether (TAEE) over ion-exchange resins was investigated. Deactivation occurred in two stages, with an initial stage where activity did not decrease and a subsequent exponential decay due to neutralization of active sites by ACN-derived compounds. The best kinetic model to describe the activity loss was a first order model, with an estimated activation energy of 33.1 +/- 1.4 kJ mol(-1). The inhibitory effect of water was also evaluated using Langmuir and Freundlich isotherms.
REACTION CHEMISTRY & ENGINEERING
(2023)
Article
Engineering, Chemical
Jordi H. Badia, Carles Fite, Roger Bringue, Fidel Cunill, Javier Tejero
Summary: The kinetics of the simultaneous synthesis of ETBE and BTBE over A35 catalyst in the liquid phase was investigated. Various kinetic modeling approaches were compared, and it was found that empirical power-law modeling provided the best fit, while mechanistic modeling explained the reaction mechanisms.
CHEMICAL ENGINEERING SCIENCE
(2022)
Article
Engineering, Chemical
Min Chen, Chengna Dai, Gangqiang Yu, Ning Liu, Ruinian Xu, Ning Wang, Biaohua Chen
Summary: This study proposes and systematically investigates the technology for absorbing MTBE with ionic liquids, from the molecular level to system scale. The research demonstrates that ILs are potential absorbents, and IL-based mixed absorbents may be a better strategy for achieving highly efficient absorption of MTBE, reducing product gas loss and energy consumption.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Microbiology
Vijayalakshmi Gunasekaran, Nuria Canela, Magda Constanti
Summary: A bacterial consortium capable of degrading ETBE was enriched and isolated, and the metaproteomic study revealed the effects of ETBE on the metabolism and response of the consortium.
Article
Chemistry, Multidisciplinary
Tingyu Hua, Shanshan Li, Ling Wang, Wei Yan
Summary: In this study, three strains with high adaptability and different degrading characteristics to MTBE were cultured, and kinetic models were established to simulate the biodegradation process of MTBE by the strains at different concentrations. The study found that a mixed consortium of the three strains significantly enhanced the removal efficiency and rate of MTBE, especially at high concentrations. Furthermore, the mixed consortium showed strong adaptability and effectively removed other gasoline components. This research provides support for the use of a mixed consortium to remediate MTBE-contaminated environments.
APPLIED SCIENCES-BASEL
(2023)
Article
Chemistry, Analytical
Zhaoxia Shi, Ling Xia, Gongke Li, Yufei Hu
Summary: Pt/Au NPs@Co3O4 composites with a hollow dodecahedron three-dimensional structure were successfully synthesized, and a CTL sensor based on this composite was established for the accurate and rapid detection of MSBE in MTBE. The experimental results demonstrated that the sensor exhibited strong specificity and sensitivity, and the analytical results were consistent with those obtained using traditional gas chromatography.
Review
Chemistry, Analytical
Sayyed Hossein Hashemi, Massoud Kaykhaii, Majid Mirmoghaddam, Grzegorz Boczkaj
Summary: Fuel oxygenates (FOs) are mainly ethers or alcohols added to gasoline for boosting octane number or improving fuel burning cleanliness. They are water soluble and have high mobility in the environment, affecting water quality even at low concentrations. Proper sample preparation is the main challenge in determination of FOs.
CRITICAL REVIEWS IN ANALYTICAL CHEMISTRY
(2021)
Article
Thermodynamics
Xiangwei Ren, Zhiyong Pan, Wentao Zhao, Li Wang
Summary: The solubility of 2-ethylanthraquinone (EAQ), 2-tert-butylanthraquinone (TBAQ) and 2-tert-amylanthraquinone (TAAQ) in binary solvents consisting of 1,3,5-trimethylbenzene (TMB) and tetrabutylurea (TBU) was measured at different temperatures and pressures. The solubility of EAQ, TBAQ and TAAQ increased with higher temperatures and higher content of TMB in the mixed solvents. The experimental data were correlated using different models, and the Wilson model showed the best accuracy.
JOURNAL OF CHEMICAL THERMODYNAMICS
(2023)
Article
Environmental Sciences
Vianni G. C. Straccia, Pedro L. Lugo, Cynthia B. Rivela, Maria B. Blanco, Peter Wiesen, Mariano A. Teruel
Summary: The rate coefficients for gas-phase reactions of OH radicals with two chloroacetoacetates were measured using different reference compounds. Product studies were conducted to identify degradation products, leading to proposed atmospheric chemical mechanisms. Tropospheric lifetimes and ozone production impacts of the chloroesters were evaluated based on the identified products.
Article
Energy & Fuels
Iwan Ridwan, Charoen Chinwanitcharoen, Kazuhiro Tamura
Summary: The addition of water to supercritical tert-butyl methyl ether enhances biodiesel yield, with the optimal conditions being 25 wt% water addition, 300 degrees C temperature, 20 MPa pressure, and 30 min space time resulting in a 77.39 wt% biodiesel yield. The reaction rate is accelerated by water, acting as a catalyst, and the supercritical reaction is found to be endothermic, endergonic, and non-spontaneous based on thermodynamic parameters.
Article
Engineering, Chemical
Yanli Zhang, Zihao Su, Ke Xue, Jiafu Xing, Dingchao Fan, Jianguang Qi, Zhaoyou Zhu, Yinglong Wang
Summary: This study investigated the efficient separation of MTBE from gasoline using ILs and explored the separation mechanism using quantum chemistry and molecular dynamics. The results showed that 1-butyl-3-methylimidazolium nitrate and 1-ethanyl-3-methylimidazole hydrogen sulfate had the highest extraction rate.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Environmental Sciences
Qiqi Zhu, Shanshan Zhu, Qiyao Li, Yun Wang, Dongxu Zheng, Chunjiang Chen, Naqi Ruan, Haiqiong Chen, Haoni Yan, Han Lin, Ren-Shan Ge
Summary: Exposure to MTBE during late puberty compromises the development of Leydig cells in male rats by inhibiting cell proliferation, inducing mitochondrial autophagy and apoptosis, and indirectly stimulating Sertoli cells to secrete anti-Mullerian hormones, resulting in a reduced number of Leydig cells.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2022)
Article
Biotechnology & Applied Microbiology
Yiyang Chen, Hao Ren, Xiangyu Kong, Hao Wu, Zhenmei Lu
Summary: In this study, an MTBE-degrading enzyme, prmABCD, was identified and its role in MTBE metabolism was revealed. Transcriptome analysis showed that the expression of prmABCD was upregulated by MTBE. Functional characterization demonstrated that prmABCD could catalyze the degradation of MTBE, and the loss of genes encoding the oxygenase subunits, coupling protein, or reductase disrupted MTBE degradation. The catalytic capacity of PRM was influenced by specific amino acid residues in the active site and substrate tunnel.
APPLIED AND ENVIRONMENTAL MICROBIOLOGY
(2023)
Article
Engineering, Chemical
Xue-Ling Wei, Bo Song, Yu-Ling Luo, Jun-Fang An, Jun-Bin Zhang, Meng Pan, Xingyang Li
Summary: In this study, compact NaX zeolite membranes with excellent pervaporation performance for methanol/MTBE mixtures were synthesized by controlling the deposition process of the silicon aluminum components using water-organic solvent synthesis solutions. This new method provides a new approach for the preparation of compact membranes.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Engineering, Environmental
Yanli Zhang, Ke Xue, Huiyuan Li, Shuyi Lian, Chunyang Han, Zhaoyou Zhu, Yanyue Lu, Jianguang Qi, Yinglong Wang
Summary: In this study, the process of extracting MTBE from petroleum wastewater using a mixed extractant of water and ionic liquids (ILs) was clarified. A comprehensive method of evaluating the extraction performance was proposed using the COSMO-SAC model, liquid-liquid extraction measurement, and micro-scale analysis mechanism. The interaction mechanisms of different solvents with MTBE and ethanol were revealed through molecular dynamics simulations and quantum chemical calculations.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Toxicology
Azizallah Dehghan, Narges Khanjani, Abbas Bahrampour, Gholamreza Goudarzi, Masoud Yunesian
Article
Water Resources
Samer Abuzerr, Simin Nasseri, Masud Yunesian, Mahdi Hadi, Kate Zinszer, Amir Hossein Mahvi, Ramin Nabizadeh, Ayman Abu Mustafa, Shimels Hussien Mohammed
JOURNAL OF WATER SANITATION AND HYGIENE FOR DEVELOPMENT
(2020)
Article
Engineering, Environmental
Hamid Reza Ghaffari, Masud Yunesian, Ramin Nabizadeh, Simin Nasseri, Farhad Pourfarzi, Hossein Poustchi, Alireza Sadjadi, Ahad Eshraghian
Summary: The chemical quality of groundwater supplies in two high-risk and low-risk areas for gastric cancer in Iran was evaluated through hydrogeochemical analysis and water quality indices, demonstrating significant differences in the hydrochemical properties of groundwater between these two areas, with higher nitrate intake and risk in the low-risk area.
ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
(2021)
Article
Environmental Sciences
Hosna Janjani, Ramin Nabizadeh, Mansour Shamsipour, Masud Yunesian
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2020)
Article
Environmental Sciences
Sasan Faridi, Ramin Nabizadeh Nodehi, Saeed Sadeghian, Masih Tajdini, Mohammad Hoseini, Masud Yunesian, Shahrokh Nazmara, Mohammad Sadegh Hassanvand, Kazem Naddafi
JOURNAL OF EXPOSURE SCIENCE AND ENVIRONMENTAL EPIDEMIOLOGY
(2020)
Article
Chemistry, Analytical
Jalil Jaafari, Kazem Naddafi, Masud Yunesian, Ramin Nabizadeh, Mohammad Sadegh Hassanvand, Mohammad Ghanbari Ghozikali, Hamid Reza Shamsollahi, Shahrokh Nazmara, Kamyar Yaghmaeian
MICROCHEMICAL JOURNAL
(2020)
Article
Engineering, Environmental
Katayoun Rabiei, Nizal Sarrafzadegan, Ali Ghanbari, Mansour Shamsipour, Mohammad Sadegh Hassanvand, Heresh Amini, Masud Yunesian, Farshad Farzadfar
JOURNAL OF ENVIRONMENTAL HEALTH SCIENCE AND ENGINEERING
(2020)
Article
Environmental Sciences
Behrooz Karimi, Ramin Nabizadeh Nodehi, Masud Yunesian
Article
Chemistry, Analytical
Leila Mousavi, Zahra Tamiji, Mannan Hajimahmoodi, Mohsen Amini, Reza Ahmadkhaniha, Mortaza Asadi, Mohammad Reza Khoshayand
MICROCHEMICAL JOURNAL
(2020)
Article
Environmental Sciences
Sasan Faridi, Sadegh Niazi, Kaveh Sadeghi, Kazem Naddafi, Jila Yavarian, Mansour Shamsipour, Nazanin Zahra Shafiei Jandaghi, Khosro Sadeghniiat, Ramin Nabizadeh, Masud Yunesian, Fatemeh Momeniha, Adel Mokamel, Mohammad Sadegh Hassanvand, Talat MokhtariAzad
SCIENCE OF THE TOTAL ENVIRONMENT
(2020)
Article
Engineering, Environmental
Reza Ahmadkhaniha, Mahboobeh Ghoochani, Noushin Rastkari
JOURNAL OF ENVIRONMENTAL HEALTH SCIENCE AND ENGINEERING
(2020)
Article
Parasitology
Sara Rahimi, Ali Khamesipour, Amir Ahmad Akhavan, Javad Rafinejad, Reza Ahmadkhaniaha, Mahmood Bakhtiyari, Arshad Veysi, Kamran Akbarzadeh
Summary: The study found that larval saliva and hemolymph of L. sericata have acceptable leishmanicidal properties against L. tropica.
PARASITES & VECTORS
(2021)
Article
Chemistry, Analytical
Gholamreza Jahed Khaniki, Mehdi Ahmadi, Maryam Ahmadabadi, Nabi Shariatifar, Reza Ahmadkhaniha, Noushin Rastkari, Parisa Sadighara
Summary: This study aimed to measure the amount of polycyclic aromatic hydrocarbons (PAHs) in different types of traditional bread produced in Tehran city and calculate their daily intake by consumers. The results showed that the concentration of PAHs in bread was influenced by the baking time, temperature, and thickness.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
(2023)
Correction
Parasitology
Sara Rahimi, Ali Khamesipour, Amir Ahmad Akhavan, Javad Rafnejad, Reza Ahmadkhaniha, Mahmood Bakhtiyari, Arshad Veysi, Kamran Akbarzadeh
PARASITES & VECTORS
(2021)
Article
Engineering, Environmental
Reza Ahmadkhaniha, Fatemeh Yousefian, Noushin Rastkari
Summary: Despite warnings about the harmful effects of smoking, the consumption of cigarettes is increasing globally. This study compared total antioxidant capacity and total oxidant status in the serum of university students, finding that smokers had lower antioxidant capacity and higher oxidative stress compared to nonsmokers. The results suggest that smoking leads to decreased antioxidant capacity and increased production of oxidants and free radicals in the body.
JOURNAL OF ENVIRONMENTAL HEALTH SCIENCE AND ENGINEERING
(2021)