Adsorpsi Zat Warna Metilen Biru Menggunakan Biosorben Sabut Buah Lontar (Borassus Flabellifer L) Teraktivasi Asam Sulfat

LUCIA, Moniz (2022) Adsorpsi Zat Warna Metilen Biru Menggunakan Biosorben Sabut Buah Lontar (Borassus Flabellifer L) Teraktivasi Asam Sulfat. Undergraduate thesis, Universitas Katolik Widya Mandira Kupang.

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Abstract

Indonesia is a country that is developing quite rapidly in the textile industry. One of the problems that arise due to the rapid development of the textile industry is the pollution of the aquatic environment by dyes. Methylene blue is one of the dyes produced from the textile industry which is one of the causes of pollution in the aquatic environment. The adsorption method using sulfuric acid activated palm fiber biosorbent is one method that can be used to reduce the concentration of methylene blue. This study aims to determine the effect of variations in surface area, pH, mass of biosorbent, contact time and concentration of methylene blue on the adsorption capacity of lontar fruit coir biosorbent (Borassus Flabellifer L) activated by sulfuric acid. This research was carried out through 3 stages, namely the preparation of biosorbents, characterization of biosorbents, adsorption of methylene blue which were analyzed using UV-Vis spectrophotometry. Sulfuric acid activated palm fiber biosorbent was obtained by activation with 1 M H2SO4 solution. The biosorbent was characterized by water absorption and FTIR tests. The characterization of the water absorption test of the sulfuric acid activated biosorbent showed the ability of the biosorbent to absorb water was quite high at 3 hours of immersion as much as 88.283%. The FTIR characterization results showed that the biosorbent had OH and CO active groups so that it could absorb methylene blue dye. The results showed that the optimum conditions for adsorption of methylene blue using sulfuric acid activated palm fiber biosorbent occurred at a surface area of 100 mesh with a Qe of 1,444 mg/g, pH 6 with a Qe of 12,869 mg/g, a mass of 0,1 g biosoben. with Qe of 13,485 mg/g, contact time of 50 minutes with Qt of 12,708 mg/g and concentration of methylene blue 60 ppm with Qe of 48,643 mg/g.

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