A study on calcium alginate encapsulation of kaolin on methylene blue removal

The dye industry that operates causes a lot of environmental pollution, especially water pollution because of synthetic dyes that have significant environmental concerns. Methylene blue is an example of a dye that can harm human health and the environment because of its toxicity. Therefore, an efficient dye remove was prepared in this study through an adsorption method with clays such as kaolin (main), ball clay and bentonite clay as the adsorbents as they are abundantly and it is excellent cost- effective adsorbent in dye removal. The objectives of this research are to prepare sodium alginate encapsulation of clay beads (CB), to determine the ideal parameters for the clay beads (CB) to achieve maximum efficiency in removing methylene blue and to characterize calcium alginate clay beads (CACB) using UV-visible spectrophotometer and X-ray Diffraction (XRD). Therefore, this study will be able to find out the best adsorption results among the available parameters. In this experiment, calcium alginate beads were made using a cross-linking technique together with clays. The best conditions of the adsorption MB were at 45 μm size, 0.5g dosage, pH7, 100 rpm of agitation speed, 10mL CAKB,18G of needle size and 2wt% of calcium alginate. The percentage of the best conditions of adsorption was at 99.94%. All of these parameters greatly affects the MB removal uptake rate and further through this study the problem of water pollution caused by dye will be overcome.