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해초 Biochar를 이용한 Cr6+과 As3+ 흡착 특성 (Adsorption Characteristics of Cr6+ and As3+ Using Seaweed Biochar)

Title해초 Biochar를 이용한 Cr6+과 As3+ 흡착 특성 (Adsorption Characteristics of Cr6+ and As3+ Using Seaweed Biochar)
Publication TypeMiscellaneous
Year of Publication2015
AuthorsKim, Bo-Ra, Shin Woo-Seok, and Kim Young-Kee
Abstract

This study examined the adsorption characteristics of Cr6+ and As3+ in the aqueous solution by Hizikia susiformis biochar which was collected from Jeju Island. The optimal pH for Cr6+ and As3+ adsorption were 2 and pH 6, respectively. Kinetic data showed that the adsorption occurred during the first 100 min, and the most of heavy metals were bound to biochars within 300 min. Moreover, the kinetic data presented that the course of adsorption follows the Pseudo first and second order models. The equilibrium data were well fitted by the Langmuir model and the Cr6+ adsorption capacity (25.91 mg/g) was higher than that of As3+ (16.54 mg/g). From these results, the seaweed biochar was shown to be a efficient adsorbent for Cr6+ and As3+ metals in a contaminated environment.

URLhttp://www.cheric.org/research/tech/periodicals/view.php?seq=1342486
DOI10.14478/ace.2015.1060