Application of low-cost adsorbents for dye removal – A review

介绍了Kirk—Othmer Encyclopedia of Chemical Technology（化工技术百科全书）（第五版）电子图书网络版数据库，并对该数据库使用方法和检索途径作出了说明，且结合实例简单地介绍了该数据库的检索方法。

Kirk-Othmer Encyclopedia of Chemical Technology数据库介绍及实例

A review on the utilization of fly ash

Fluoride removal from water by adsorption—A review

Adsorption of phenolic compounds on low-cost adsorbents: A review.

Nanofiltration of textile plant effluent for color removal and reduction in COD

Adsorption study for the removal of a basic dye: experimental and modeling.

Adsorption study of hexavalent chromium using tamarind hull-based adsorbents

Lipase (triacylglycerol acylhydrolase) is a unique enzyme which can catalyze various types of reactions such as hydrolysis, esterification, alcoholysis etc. In particular, hydrolysis of vegetable oil with lipase as a catalyst is widely studied. Free lipase, lipase immobilized on suitable support, lipase encapsulated in a reverse micelle and lipase immobilized on a suitable membrane to be used in membrane reactor are the most common ways of employing lipase in oil hydrolysis. Castor oil is a unique vegetable oil as it contains high amounts (90%) of a hydroxy monounsaturated fatty acid named ricinoleic acid. This industrially important acid can be obtained by hydrolysis of castor oil. Different conventional hydrolysis processes have certain disadvantages which can be avoided by a lipase-catalyzed process. The degree of hydrolysis varies widely for different lipases depending on the operating range of process variables such as temperature, pH and enzyme loading. Immobilization of lipase on a suitable support can enhance hydrolysis by suppressing thermal inactivation and estolide formation. The presence of metal ions also affects lipase-catalyzed hydrolysis of castor oil. Even a particular ion has different effects on the activity of different lipases. Hydrophobic organic solvents perform better than hydrophilic solvents during the reaction. Sonication considerably increases hydrolysis in case of lipolase. The effects of additives on the same lipase vary with their types. Nonionic surfactants enhance hydrolysis whereas cationic and anionic surfactants decrease it. A single variable optimization method is used to obtain optimum conditions. In order to eliminate its disadvantages, a statistical optimization method is used in recent studies. Statistical optimization shows that interactions between any two of the following pH, enzyme concentration and buffer concentration become significant in presence of a nonionic surfactant named Span 80.

Lipase applications in oil hydrolysis with a case study on castor oil: a review

Studies on adsorption of p-nitrophenol on charred saw-dust

Jayanta Kumar Basu

Papers

Nanofiltration of textile plant effluent for color removal and reduction in COD

Adsorption study for the removal of a basic dye: experimental and modeling.

Adsorption study of hexavalent chromium using tamarind hull-based adsorbents

Lipase applications in oil hydrolysis with a case study on castor oil: a review

Studies on adsorption of p-nitrophenol on charred saw-dust