2017•DEStech Transactions on Environment Energy and Earth ScienceRequires access

Optimization of Adsorption Conditions of Cr(VI) by Peanut Shell Using Orthogonal Test

XIN-LONG JIANG, Yihua Jiang

Abstract

Orthogonal experiment optimization of adsorption conditions with the factors of pH value, adsorption time, adsorbent amount of Cr(Ⅵ) wastewater by peanut shell were studied. The results showed that optimum adsorption conditions were as follows: 100mL Cr(Ⅵ) solution of 50 mg·L-1,adding 4.0 g·L-1peanut shell of 60~80 mesh and adsorbed for 2.0 h, extraction temperature 30℃, pH 1.0. Under the optimal conditions, the maximal absorption rate got 98.05%.The acetic acid modified peanut shell is a promising, cheap, efficient, new biological materials of adsorption for Cr(Ⅵ) in wastewater.

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Key concepts: Adsorption, Shell (structure), Wastewater, Chemistry, Acetic acid, Absorption (acoustics), Extraction (chemistry), Nuclear chemistry