Evaluation of papaya seeds as a novel non-conventional low-cost adsorbent for removal of methylene blue

被引：320

作者：

Hameed, B. H. ^{[1
]}

机构：

[1] Univ Sains Malaysia, Sch Chem Engn, Nibong Tebal 14300, Penang, Malaysia

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2009年 / 162卷 / 2-3期

关键词：

Papaya seeds; Adsorption; Isotherm; Methylene blue; Kinetics; AQUEOUS-SOLUTION; ACTIVATED CARBON; BASIC DYE; ADSORPTION BEHAVIOR; AGRICULTURAL WASTE; TEXTILE EFFLUENT; CATIONIC DYES; KINETICS; SORPTION; EQUILIBRIUM;

D O I：

10.1016/j.jhazmat.2008.05.120

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The feasibility of using papaya seeds (PS), abundantly available waste in Malaysia, for the cationic dye (methylene blue) adsorption has been investigated. Batch adsorption studies were conducted to study the effects of contact time, initial concentration (50-360 mg/L), pH (3-10) and adsorbent dose (0.05-1.00 g) on the removal of methylene blue (MB) at temperature of 30 degrees C. The equilibrium data were analyzed by the Langmuir, the Freundlich and the Temkin isotherms. The data fitted well with the Langmuir model with a maximum adsorption capacity of 555.557 mg/g. The pseudo-second-order kinetics was the best for the adsorption of MB by PS with good correlation. The results demonstrated that the PS is very effective to remove methylene blue from aqueous solutions. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：939 / 944

页数：6

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