| ABSTRACT |
S.T.L. Biosorbent is a new green product that is to substitute Activated Carbon and the need of regenerating it. Natural adsorbent is converted from waste to wealth and it also could bio-degrade with time. The S.T.L. Biosorbent is a novel intention to convert a conventional agricultural waste into high quality adsorbent for dye containing wastewater. This innovation is by collecting spent tea leaves that can be easily and freely obtain across Malaysia to become ` S.T.L. Biosorbent¿. In a year, about 4 million kg of spent tea leaf is dispose to landfill, respectively. Moreover, experiment proof had been conducted for thetreatment of dye wastewater (Methylene Blue, MB) by used of this product. This has concretion, 2.0g of spent tea leaf with tea leaf with particle size of <150 um at 30 minutes. Langmuir and Freundlich isotherm models were also been tested on the adsorption data and the adsoprtion process best describe by Langmuir isotherm. Maximum adsorption rate was at 140.845 mg/g
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