Results 11 to 20 of about 323,700 (316)

Dry reforming of methane over Ni-based catalysts: Effect of ZrO2 and MgO addition as support

Materials Letters: X, 2021
The increasing content of greenhouse gases (GHG’s) in earth’s atmosphere is the main reason for global warming. Dry reforming of methane (DRM) is an encouraging technique to utilize the two main GHG’s (i.e., CO2 and CH4).
Rose Diyanah binti Rosdin, Mohammad Yusuf, Bawadi Abdullah   +2 more
doaj   +1 more source

Advancement in utilization of magnetic catalysts for production of sustainable biofuels

Frontiers in Chemistry, 2023
In this study, we summarize recent advances in the synthesis of magnetic catalysts utilized for biodiesel production, particularly focusing on the physicochemical properties, activity, and reusability of magnetic mixed metal oxides, supported magnetic ...
Yutao Zhang, Yutao Zhang, Yutao Zhang, Weihua Li, Jialu Wang, Jiaxing Jin, Yixi Zhang, Jingsong Cheng, Qiuyun Zhang, Qiuyun Zhang, Qiuyun Zhang   +10 more
doaj   +1 more source

Green Photocatalysis of Organic Pollutants by Bimetallic Zn-Zr Metal-Organic Framework Catalyst

Frontiers in Chemistry, 2022
A series of bimetallic Zn-Zr metal-organic frameworks (Zn-Zr MOFs) with different Zn:Zr molar ratios has been synthesized via a green hydrothermal method.
Xiaojuan Zhang, Xiaojuan Zhang, Xiaojuan Zhang, Rongfei Yu, Dandan Wang, Weihua Li, Weihua Li, Yutao Zhang, Yutao Zhang, Yutao Zhang   +9 more
doaj   +1 more source

THE IMPACT OF ENVIRONMENTAL POLLUTION AND INDUSTRIAL PROCESSES ON THE MICROBIAL CONTENT AND RESIDUAL ELEMENTS IN DRIED FRUITS [PDF]

مجلة الأنبار للعلوم الزراعية, 2020
A number of dried fruits included figs, Qamar al-Din slices (dried apricots), tamarind paste, carrot slices, coconut slices, and lemon slices; were used to determine microbial counts (Total aerobic bacteria, total Coliform, E. coli, Staphylococcus aureus
A. O. F. Khashroum, H. J. Hamad, S. A. Saewan, S. S. George   +3 more
doaj   +1 more source

Hazard of chemical substances contamination of protective clothing for firefighters – a survey on use and maintenance

International Journal of Occupational Medicine and Environmental Health, 2021
Objectives The objective of the work was to analyze the impact of selected factors concerning the use and maintenance of firefighters’ protective clothing worn during rescue operations on the hazard of contamination by chemical substances.
Sylwia Maria Krzemińska, Małgorzata Szewczyńska   +1 more
doaj   +1 more source

Green and Facile Synthesis of Metal-Organic Framework Cu-BTC-Supported Sn (II)-Substituted Keggin Heteropoly Composites as an Esterification Nanocatalyst for Biodiesel Production

Frontiers in Chemistry, 2020
In the present study, metal-organic framework Cu-BTC-supported Sn (II)-substituted Keggin heteropoly nanocomposite (Sn1.5PW/Cu-BTC) was successfully prepared by a simple impregnation method and applied as a novel nanocatalyst for producing biodiesel from
Qiuyun Zhang, Qiuyun Zhang, Dan Ling, Dandan Lei, Jialu Wang, Xiaofang Liu, Yutao Zhang, Yutao Zhang, Peihua Ma   +8 more
doaj   +1 more source

Comparison of Optimal Machine Learning Algorithms for Early Detection of Unknown Hazardous Chemicals in Rivers Using Sensor Monitoring Data

Toxics, 2023
Water environment pollution due to chemical spills occurs constantly worldwide. When a chemical accident occurs, a quick initial response is most important.
Su Han Nam, Jae Hyun Kwon, Young Do Kim
doaj   +1 more source

Optimized Workflow Framework in Construction Projects to Control the Environmental Properties of Soil

Algorithms, 2023
To optimize the workflow of civil engineering construction in a harbour, this paper developed a framework of the contaminant leaching assessment carried out on the stabilized/solidified dredged soil material.
Per Lindh, Polina Lemenkova
doaj   +1 more source

Microbiological and Chemical Quality of Portuguese Lettuce—Results of a Case Study

Foods, 2020
In addition to environmental pollution issues, social concerns about the sustainability, safety, and quality of conventionally grown fruits and vegetables have been increasing.
Catarina Ferreira, Filipa Lopes, Reginaldo Costa, Norton Komora, Vânia Ferreira, Virgínia Cruz Fernandes, Cristina Delerue-Matos, Paula Teixeira   +7 more
doaj   +1 more source

Implementation of Priority Measures to Eliminate the Accumulated Environmental Damage Caused by Chemical Enterprises in the City of Usolye-Sibirskoye, Irkutsk Region

Вестник войск РХБ защиты, 2023
A difficult situation, close to an environmental disaster, had been developing in the town of UsolyeSibirskoye, Irkutsk Region, since the 90s of the ХХ century.
S. A. Maltsev, E. V. Veber, V. A. Inozemtsev, M. V. Tsapok, P. Y. Belyakov, V. A. Kovtun, A. A. Antokhin   +6 more
doaj   +1 more source