Abstract
This research aims to use agricultural waste as an adsorbent for dye removal from textile wastewater. Coconut shell charcoal (CSC), an agricultural waste, was used as dye adsorbent whilst basic yellow13 (BY13) and basic red14 (BR14) were used as representative dye used in textile manufactory. The removal of BY13 and BR14 from aqueous solution by CSC was investigated in batch adsorption at room temperature. Two parameters investigated in this research were pH of dyes solution; pH 2, 7, and 11, and particle size of adsorbents; 510-700 μm and 1000-2000 μm. The adsorption model, Langmuir and Freundlich were also examined. It was found that by CSC, BY13 and BR14 had maximum removal percentage of 23.6 and 55.7 at pH 11. Size of adsorbent had also shown the effect on dye removal, i.e.; increasing size with decreasing removal capability. The dye removal experimental data were fitted to Langmuir adsorption model for both dyes with maximum adsorption capacity (q m ) for BY13 and BR14 of 19.76 and 22.93 mg/g, respectively. It can be implied that the adsorption is monolayer. It can conclude that CSC can be used as adsorbent for basic dye removal from aqueous solution.
Highlights
This research aims to use agricultural waste as an adsorbent for dye removal from textile wastewater
Coconut mesocarp was studied as an adsorbent for dye removal, such as Acid Blue158 (AB158) and Acid Yellow13 (AY13) [4] and textile dyes [5]
The effect of pH on the removal of basic yellow13 (BY13) and basic red14 (BR14) by Coconut shell charcoal (CSC) was studied at pH 2, 7 and 11 wtih an initial dye concentration of 100 mg/L
Summary
This research aims to use agricultural waste as an adsorbent for dye removal from textile wastewater. Development and use of low cost adsorbents has been investigated by many researchers for effective removal of dyestuffs from wastewater. Basic Fuchsin dye [1], Basic Blue 3 [2] and Basic Red 9 [3] were studied with using agricultural wastes, in order to investigate the dye removal capacity. Low cost coconut shell based activated carbon (CSAC) was examined for removal of Reactive Blue 19 (RB19) dye adsorption from aqueous solution [6]. Activated carbon from coconut shell was prepared via H2SO4 activation (CSAC) and its ability to remove textile dyes; maxilon blue GRL and direct yellow DY 12, from aqueous solutions were studied [7]. We attempt to investigate the removal ability of basic dyes from solution by coconut shell charcoal, which is agricultural waste in the community. The basic dyes used in this study are Basic Yellow 13 and Basic Red 14, which are those of dyestuff often used by the textile dyeing
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