Regulatory Requirements for Registration of Herbal Medicinal Products in European Union and Australia”

摘要

As the current global trend towards more stringent environmental standards, technical applicability and cost-effectiveness became key factors in the selection of adsorbents for water and wastewater treatment. Recently, various low-cost adsorbents derived from agricultural waste, industrial by-products or natural materials, have been intensively investigated. In this study adsorption of methylene blue using various low cost adsorbent such as groundnut shell, and tea waste were used. Among this adsorbent tea waste showed 70% adsorption and groundnut shell showed 54% adsorption efficiency at constant time interval with variation in dye concentration. At constant dye concentration of 500mg/l, adsorbent dosage of 0.4 gm of ground nut shell showed highest adsorption efficiency of 94%. Also at constant dye concentration and adsorbent dosage and varying contact time, the tea waste has the efficiency of 86% dye removal which was higher than the ground nutshell.