Removal of chromium from water using pea waste – a green approach

Green Chemistry Letters and Reviews

Jamil Anwar¹ 

关键词: biosorption;    chromium;    pea pods;    Langmuir isotherm;    Freundlich isotherm;    Temkin isotherm;   

DOI  :  10.1080/17518251003730833

学科分类：化学（综合）

来源: Taylor & Francis

【 摘 要 】

Agro-waste materials have carboxylic and phenolic groups that play the main role in metal adsorption. The advantages of these materials include easy availability, low cost, and reasonable metal removal capacity. One of the materials (usually considered as waste) is pea waste (pods). Present work comprises adsorption of chromium from aqueous solution using powder of pods of garden peas (Pisum sativum) in batch. Important parameters like adsorbent dose, pH, contact time, and agitation speed were studied. Adsorption equilibrium was explained by Langmuir, Freundlich, and Temkin isotherms. Maximum chromium uptake (q m) was 3.56 mg/g of adsorbent. Heat of adsorption, as evaluated by Temkin isotherm was 1.96 kJ/mol. It is proposed that pea pods can be an effective and environmentally benign (green) adsorbents for removal of chromium from industrial effluents and waste waters.

【 授权许可】

Unknown