Heditama, Muhammad Raffi
(2023)
Biosorpsi Zat Warna Methylene Blue Menggunakan Selulosa Hasil Ekstraksi
Kulit Durian (Durio Zibethinus Murr) dengan Metode Batch.
Skripsi thesis, Universitas Negeri Padang.
Abstract
Methylene Blue is a harmful dye produced in the textile industry. Biosorption can
be used as one of the methods to deal with textile dye waste. Biosorption is an easyto-use
method because it is simpler, more economical, and more environmentally
friendly. Biosorbents that can be used, namely cellulose in durian skin (Durio
zibethinus Murr.), can be used as an alternative to be used as biosorbents in the
absorption of Methylene Blue dyes. The purpose of this study was to determine the
optimum absorption capacity of methylene blue dye using a durian peel cellulose
adsorbent (Durio zibethinus Murr.). This study used a batch method with pH
variations (2, 3, 4, 5, 6). Concentration (50, 100, 150, 200, 250, 300) ppm, and
stirring speed (50, 100, 150, 200, 250) rpm. The results of this study obtained
a cellulose extract from 90 grams of durian peel the extract resulted in 28.585 grams
with a percentage of 31.69%. Optimum conditions at each variation at pH 5,
concentration of 250 ppm, and stirring speed of 200 rpm obtained an optimum
absorption capacity of 25.2574 mg/g. Isotherm modeling approximates the
equilibrium equation, Freundlich, with a value of R
2
= 0.7944.
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