نتایج جستجو برای: waste oils

تعداد نتایج: 109106  

2014
Jinyong Yan Xianliang Zheng Lei Du Shengying Li

BACKGROUND Lipase-catalyzed biotransformation of acylglycerides or fatty acids into biodiesel via immobilized enzymes or whole cell catalysts has been considered as one of the most promising methods to produce renewable and environmentally friendly alternative liquid fuels, thus being extensively studied so far. In all previously pursued approaches, however, lipase enzymes are prepared in an in...

2011
Mohamed Y. E. Selim

Oils of a significant value both as fuels as well as for cosmetic applications can be extracted from the fruits of the jojoba plant. After extracting the oil, the remains of the fruit can still be further utilized as a solid fuel in furnaces or feedstock to animals. In the present work, the solid waste jojoba remains have been processed chemically to extract more biodiesel oil. The physical and...

2014
Shashank Mohan Manish Jain

-In this research paper we found that in order to meet the growing energy needs as a consequence of spiraling demand and diminishing supply, in today’s world renewable energy and biomass sources mostly bio-fuels are receiving more attention. The demand for energy has been phenomenon due to the rapid development of certain growing economies, especially in developing countries. Also because of th...

2017
Marina Corral Bobadilla Rubén Lostado Lorza Rubén Escribano García Fátima Somovilla Gómez Eliseo P. Vergara González Thomas E. Amidon

The exhaustion of natural resources has increased petroleum prices and the environmental impact of oil has stimulated the search for an alternative source of energy such as biodiesel. Waste cooking oil is a potential replacement for vegetable oils in the production of biodiesel. Biodiesel is synthesized by direct transesterification of vegetable oils, which is controlled by several inputs or pr...

2012
Feng Guo Zhen Fang

Biodiesel is usually produced by transesterification of vegetable oils or animal fats with chemical catalysts, especially in the presence of strong acidic or basic solutions, such as hydrochloric acid, sulphuric acid, sodium hydroxide, sodium methoxide and potassium hydroxide. Homogeneous alkali catalysts can convert triglycerides to their corresponding fatty acid methyl esters (FAMEs) with hig...

2016
Agnieszka Wolińska Agnieszka Kuźniar Anna Szafranek-Nakonieczna Natalia Jastrzębska Eliza Roguska Zofia Stępniewska

Soil microbial communities play an important role in the biodegradation of different petroleum derivates, including hydrocarbons. Also other biological factors such as enzyme and respiration activities and microbial abundance are sensitive to contamination with petroleum derivates. The aim of this study was to evaluate the response of autochthonic microbial community and biological parameters (...

2010
A. E. Ghaly

Problem Statement: The research on the production of biodiesel has increased significantly in recent years because of the need for an alternative fuel which endows with biodegradability, low toxicity and renewability. Plant oils, animal fats, microalgal oils and waste products such as animal rendering, fish processing waste and cooking oils have been employed as feedstocks for biodiesel product...

2016
Andrzej Olejniczak Jacek Fall Katarzyna Olejniczak Marina V Gustova Alexandr G Shostenko

A solid phase extraction method for removing polar tritiated contaminants from tritium-containing waste oils has been developed. The composition of the degradation products present in the waste oil was determined. The results indicated that upon exposure to tritium gas, fragment methyl ketones, carboxylic acids, and lactones were the main polar products of the mineral-based oil oxidation. The n...

2013
Hanna Prokkola Toivo Kuokkanen Ulla Lassi

Material efficiency is nowadays an essential topic to promote the sustainable use of natural resources, waste materials and industrial by-products, in agreement with the principle of sustainable development and LCA (life cycle assessment). In this research it was determined the biodegradation of used vegetable oil based products and their important physicochemical properties for their suitabili...

2017
Max J H Worthington Renata L Kucera Inês S Albuquerque Christopher T Gibson Alexander Sibley Ashley D Slattery Jonathan A Campbell Salah F K Alboaiji Katherine A Muller Jason Young Nick Adamson Jason R Gascooke Deshetti Jampaiah Ylias M Sabri Suresh K Bhargava Samuel J Ippolito David A Lewis Jamie S Quinton Amanda V Ellis Alexander Johs Gonçalo J L Bernardes Justin M Chalker

Mercury pollution threatens the environment and human health across the globe. This neurotoxic substance is encountered in artisanal gold mining, coal combustion, oil and gas refining, waste incineration, chloralkali plant operation, metallurgy, and areas of agriculture in which mercury-rich fungicides are used. Thousands of tonnes of mercury are emitted annually through these activities. With ...

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