Biosorption of methylene blue and acid red 88 from wastewater by using peanut shell

This study represents the removal of harmful dye substances from wastewaters by using a waste and cheap biosorbent. For this aim, peanut shell was used as a biosorbent for the removal of methylene blue and acid red 88 dyes. The effects biosorbent amount, initial dye concentration, pH, temperature, contact time and dye type on biosorption were studied. In the study, the highest removal of acid red 88 was found as 88% using dye solution of 200 ppm with 5.0 grams of peanut shell at contact time of 300 minutes. The highest removal of methylene blue was determined as 99% using dye solution of 200 ppm with 4.0 grams of peanut shell at contact time of 60 minutes. As a result of dye type, methylene blue which has a linear geometric structure has demonsrated a high removal than acid red 88. Biosorption isotherms for both dyes were found more consistent with the Langmuir model according to Freundlich model.

Keywords:

Biosorption, peanut shell, methylene blue acid red 88,

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