#TITLE_ALTERNATIVE#

• Main Author: Nurmalasari (10513028), Rosi
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/24105
• Institution: Institut Teknologi Bandung

The textile industry is one of the producers of waste water. The use of biomaterial as adsorbents can be an <br /> <br /> <br /> alternative environmentally-friendly technology for the processing of waste water. Seaweed have the ability <br /> <br /> <br /> to adsorb metals and polar organic compounds because it contains polysaccharides, lipids or proteins on <br /> <br /> <br /> the surface of the walls of the cell. Those compounds can act as a binding site because it containing hydroxyl <br /> <br /> <br /> functional groups, such as amino, hydroxyl, and carboxyl. This research used the powder seaweed <br /> <br /> <br /> Sargassum sp. soaked with HCl 0,1 M as a methylene blue dye adsorbent. Optimization of adsorption <br /> <br /> <br /> includes parameters of pH, contact time, the mass of the adsorbent and initial concentration of methylene <br /> <br /> <br /> blue. This research results that pH optimum adsorption conditions in pH 3, masses of adsorbent 0,1 gram, <br /> <br /> <br /> adsorption time of 60 minutes, and this adsorben can adsorp methylene blue up to of 1000 mg L-1. <br /> <br /> <br /> Adsorption process follow the Langmuir isotherm with the maximum adsorption capacity of 294.12 mg g- <br /> <br /> <br /> 1 at 25&#730;C. Kinetic studies suggest that methylene blue adsorption kinetic model follows the pseudo second <br /> <br /> <br /> order. Desorpsi as much as 3 cycles have been done using HCl 0,1 M solution.