Removal of methylene blue dye from aqueous solutions by adsorption using yellow passion fruit peel as adsorbent

被引：219
作者：
Pavan, Flavio Andre [1 ]
Mazzocato, Ana Cristina [2 ]
Gushikem, Yoshitaka [1 ]
机构：
[1] Univ Estadual Campinas, UNICAMP, Inst Quim, BR-13084971 Campinas, SP, Brazil
[2] Univ Fed Rio Grande do Sul, Dept Bot, BR-90046900 Porto Alegre, RS, Brazil
来源：
BIORESOURCE TECHNOLOGY | 2008年 / 99卷 / 08期
基金：
巴西圣保罗研究基金会;
关键词：
low-cost natural adsorbent; yellow passion fruit peel; methylene blue; aqueous solution; batch technique;
D O I：
10.1016/j.biortech.2007.05.067
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
The removal of color from aquatic systems caused by presence of synthetic dyes is extremely important from the environmental viewpoint because most of these dyes are toxic, mutagenic and carcinogenic. In this present study, the yellow passion fruit (Passiflora edulis Sims. f. flavicarpa Degener) peel a powdered solid waste, was tested as an alternative low-cost adsorbent for the removal of a basic dye, methylene blue (MB), from aqueous solutions. Adsorption of MB onto this natural adsorbent was studied by batch adsorption isotherms at room temperature. The effects of shaking time and pH on adsorption capacity were studied. An alkaline pH was favorable for the adsorption of MB. The contact time required to obtain the maximum adsorption was 56 h at 25 degrees C. Yellow passion fruit peel may be used as an alternative adsorbent to remove MB from aqueous solutions. (c) 2007 Elsevier Ltd. All rights reserved.
引用
收藏
页码：3162 / 3165
页数：4
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