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Removal of methylene blue from water using sugar palm agro
industry waste adsorbent

H M Al Hakim 1,2* and W Supartono 1
1 Faculty of Agriculture Technology, Gadjah Mada University, Yogyakarta,
Indonesia
2 Faculty of Agriculture, Lambung Mangkurat University, South Kalimantan,
Indonesia

E -mail : hisyam.alhakim@ulm.ac.id

Abstract. In this study batch experiment were carried out using sugar palm powder waste
(SPPW), that generating from sugar palm agro industry. Variables studied were initial of
solution pH and SPPW dose. The Langmuir and Freundlich isotherm models were used to
represent the equilibrium data and the constants of the isotherms were determined by using the
experimental data. To evaluate the kinetics and the mechanism of the adsorption used models
like Lagergren’s pseudo-first order kinetics, Ho’s pseudo-second order kinetics, Ritchie, and
intraparticle diffusion. The studied was found that the increase solution pH would increasing of
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adsorption capacity from 30.31 mg g-1 at pH 2 to 66.70 mg g at pH 8. The dye removal was
from 83% to 95% for an increase in the biosorbent dose from 0.5 gL to 2 gL while adsorption
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capacity was reducing from 66.70 to 19.01 mg g-1. The equilibrium studies well interpreted by
the Freundlich model and maximum adsorption capacity (qm) is 312.5 mg g-1. The kinetic
studies found that the biosorption process followed the pseudo second order.

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