ADSORPTION OF METHYLENE BLUE DYE FROM AQUEOUS SOLUTION BY USING ACTIVATED CARBON PREPARED FROM DIPTEROCARPUS ALATUS FRUIT
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Abstract
The aim of this study was to remove methylene blue dye from aqueous solution by using activated carbon derived from Dipterocarpus alatus fruit. Three parts of this fruit include wing, pericarp and endocarp were processed into activated carbon by chemical activation with ZnCl2 using impregnation ratio between raw material and chemical 1:2 and carbonized at 500oC for 1 hour. The results show that the prepared activated carbon with highest surface area of 843 m2/g and average pore size of 2.24 nm with mainly microporous structure were obtained from the wing part. The adsorption process was investigated in a batch system by varying initial methylene blue concentrations and contact times. The results reveal that an increase in the contact time favored methylene blue adsorption until it reached equilibrium at 3 hours. The obtained results from adsorption isotherm indicated that Langmuir is a suitable model with R2 = 0.981 and the maximum adsorption capacity of 269.3 mg/g. Therefore, Dipterocarpus alatus fruit has shown to be a suitable material to produce activated carbon with reasonable adsorption capacity.
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ศานิตย์ ลีนะธรรม. (2548). ไม้ยางนา. เอกสารส่งเสริมและเผยแพร่ สำนักบริหารพื้นที่อนุรักษ์ 4: กรมอุทยานแห่งชาติ สัตว์ป่า และพันธุ์พืช
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