Castor oil as a renewable resource for the chemical industry

2010 ◽  
Vol 112 (1) ◽  
pp. 10-30 ◽  
Author(s):  
Hatice Mutlu ◽  
Michael A. R. Meier
Keyword(s):  
Chemical Industry ◽  
Castor Oil ◽  
Renewable Resource

Application of Response Surface Methodology for Optimization of Cellulose Solution by ZnCl2

2011 ◽  
Vol 391-392 ◽  
pp. 1008-1011
Author(s):  
Guo Ming Zeng ◽  
Yuan Liang Wang ◽  
Xin Qiang Ning ◽  
Mao Lan Zhang
Keyword(s):  
Response Surface Methodology ◽  
Response Surface ◽  
Corn Stover ◽  
Chemical Industry ◽  
Steam Explosion ◽  
Renewable Resource ◽  
Production Costs ◽  
Attractive Alternative ◽  
Cellulose Solution ◽  
Commercial Value

Corn stover is a largely feasible and cheap renewable resource with low commercial value. An attractive alternative is utilization of corn stover for chemical industry，medicine，biochemistry etc. However, the production costs are still too high to apply on commercialization. The purpose of this study was to use the response surface methodology (RSM) to optimize of cellulose salvation by ZnCl2 after the steam explosion .The solution of cellulose that had been pretreated with 87% ZnCl2 at 139 °C for 49 min resulted in an optimum solubility of 76.2%.

scholarly journals Liplytic activity of some fungal species on castor oil

2012 ◽  
Vol 12 (54) ◽  
pp. 6686-6699
Author(s):  
A Negedu ◽  
◽  
JB Ameh ◽  
VJ Umoh ◽  
SE Atawodi ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Aspergillus Flavus ◽  
Castor Oil ◽  
Aspergillus Terreus ◽  
Lipolytic Activity ◽  
Renewable Resource ◽  
Fungal Species ◽  
Natural Habitats ◽  
Aspergillus Tamarii ◽  
Syncephalastrum Racemosum

Castor seed is important because of the castor oil content (40 – 57%). The oil enjoys tremendous world demand in the pharmaceutical, paint, cosmetics, textile, leather, lubricant, chemical, plastic, fibre, automobile and engineering industries. Castor oil, aside being a renewable resource, it is biodegradable and eco- friendly. Agricultural products are natural habitats of fungi and these materials contain cellulose, hemi- cellulose, starch, oils and other complex organic compounds. The ability of the fungi to exist in these environment s largely depends on their ability to produce enzymes capable of breaking down the various organic materials to provide their nutrients. Castor seeds and castor oil are good sources of nutrients for fungal growth and development. Fungi are capable of producing lipases which can hydrolyze fats or oils to fatty acids thereby increasing the free fatty acids of the produce and this is a deteriorating effect. Lipid degradation takes place when seeds or their oils are damaged by improper storage conditions or are exposed to certain microorganisms. Studies were carried out on the ability of nine fungal species namely: Aspergillus tamari i Aspergillus chevallieri, Penicillium chrysogenum, Cephaliophora irregularis, Syncephalastrum racemosum, Aspergillus flavus, Aspergillus ruber, Aspergillus terreus and Aspergillus niger to produce extracellular lipases in stationary liquid medium using quantitative and qualitative indices including, dry mycelia mass, free fatty acid and peroxide values. These studies showed that al l the mould species exhibited lipolytic activity to varying levels as confirmed by formation of blue halo round the fungal colonies. The highest level of lipolytic activity (96.88 % +1.12%) was produced by Aspergillus tamari . which was also characterized b y highest mycelia dry yield (2.54 mg/40ml + 0.20 mg/40ml), while Cephaliphora irregularis produced the least lipolytic activity (3.10 % + 0.18%). T he highest peroxide value (38.1 meq/kg + 1.17meq/kg) was obtained in the medium inoculated with Aspergillus tamarii while the least (6.20 meq/kg +0.58)meq/kg was with Aspergillus terreus after 30 days of storage. The study showed that Aspergillus tamarii and Aspergillus flavus grew well and readily caused lipolytic activity when cultured in medium containing castor oil as the only carbon source, suggesting that these fungal species contributed significantly to castor oil bio -deterioration.

scholarly journals Divergent Process for C10, C11and C12ω-Amino Acid and α,ω-Dicarboxylic Acid Monomers of Polyamides from Castor Oil as a Renewable Resource

2012 ◽  
Vol 33 (6) ◽  
pp. 1873-1878 ◽  
Author(s):  
Moo-Hyun Koh ◽  
Hyeon-Jeong Kim ◽  
Na-Ra Shin ◽  
Hyun-Su Kim ◽  
Dong-Won Yoo ◽  
...  
Keyword(s):  
Amino Acid ◽  
Dicarboxylic Acid ◽  
Castor Oil ◽  
Renewable Resource

Application of Castor Oil Based Polyurethane Resin in the Dimension Stone Block Wrapping Process

2020 ◽  
Vol 848 ◽  
pp. 20-27
Author(s):  
Leonardo Luiz Lyrio da Silveira ◽  
Bruna dos Santos Cezar Ferreira ◽  
Phillipe Fernandes de Almeida ◽  
Victor Moza Ponciano
Keyword(s):  
Tensile Strength ◽  
Epoxy Resin ◽  
Castor Oil ◽  
Renewable Resource ◽  
Toxic Substances ◽  
Dimension Stone ◽  
Stone Surface ◽  
Global Marketing ◽  
Stone Block ◽  
Polyurethane Resin

The dimension stone wrapping process is a method used before the sawing of the block which aims to enhance the integrity of the rock, thus ensuring that fractured or altered blocks remain intact while they are handling and splitting into slabs. This method increases safety and allows the processing of many materials once not commercialized. Nevertheless, the epoxy resin used in the process comes from a non-renewable resource and contains toxic substances on its composition. Therefore, in order to increase the eco-efficiency in the sector of dimension stones, a comparison of the epoxy resin with an ecological and non-toxic resin based on the castor oil, was carried out aiming to know the resulting tensile strength in the contact of the polymer with the stone surface. Two types of rocks were tested, a silicate and a carbonate one. The results indicated that the castor oil resin performed a higher tensile strength regarding carbonate rocks, suggesting that the castor oil resin could replace the epoxy resin when applied to this rock group, providing an environmental advantage and a global marketing differential.

Sign in / Sign up

Export Citation Format

Share Document