Immobilization of activated carbons on yarn as the adsorbent for dissolved iron in traditional well water

Abstract

Excessive iron content in well water can degrade water quality and cause health problems such as indigestion, poisoning, intestinal damage, bleeding gums, and arthritis. Immobilization of activated carbon from refill water and coconut shells on yarns is an alternative adsorption method for reducing dissolved iron levels within wells. Activated-carbon-immobilized yarns are packaged in the form of fiber filters to widen the application and make separation easier without further filtration. The purpose of this study is to determine the adsorption characteristics of ferrous metal adsorption in the relatively new adsorbent design with contact times of 10, 20, 30, 60, and 120 min. The research process began with the production of activated carbon, followed by the characterization, activated-carbon immobilized yarn, and adsorption study. Diluted HCl was the activating agent for samples (regenerated-water-refilled carbon and coconut shells carbon) and tapioca was the adhesive to stick carbon on the yarn. The best formula composition was just from the carbon-immobilized yarn stability, thickness, and surface homogeneity. The surface pores were observed by SEM and the metal absorbed was analyzed with the AAS method. The research finding shows that the optimum contact time of carbon-immobilized yarn with iron solutions was 30 min. Both the regenerated refilled carbon and coconut shell carbon follow the adsorption characteristics of the Freundlich isotherm model.

Keywords

• Activated carbon
• Adsorbent
• Fiber
• Iron(II)
• Well water
• SSA