Porous structure and adsorptive properties of pineapple peel based activated carbons prepared via microwave assisted KOH and K2CO3 activation
Porous structure and adsorptive properties of pineapple peel based activated carbons prepared via microwave assisted KOH and K2CO3 activation
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DOI：
10.1016/j.micromeso.2011.08.005
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发表时间：
2012-01-15
影响因子：
5.2
通讯作者：
Hameed, B. H.
中科院分区：
文献类型：
--
作者：
Foo, K. Y.;Hameed, B. H.
本研究探讨了微波辐照制备高比表面积活性炭的可行性，该活性炭是食品罐头加工工业通过KOH和K2CO3活化产生的农业废水。在微波功率为600W，辐照时间为6min的条件下进行活化。以亚甲基蓝为吸附剂，进行间歇吸附实验，研究了PPAC的平衡行为。采用非线性吸附等温线模型Langmuir， Freundlich和Temkin模拟了平衡数据。KOH活化后的样品孔隙结构发育较好，比表面积为1006 m(2)/g，总孔容为0.59 m(3)/g，平均孔径为23.44埃。测定亚甲基蓝的单层吸附量为462.10 mg/g。这些发现支持了微波辅助KOH和K2CO3活化作为一种有前途的活化技术的潜在应用。(C) 2011爱思唯尔公司版权所有。
The present research explores the feasibility of microwave irradiation for preparation of high surface area activated carbon from pineapple peel (PPAC), an agricultural effluent emitted from the food can processing industries via KOH and K2CO3 activation. The activation process was performed at the microwave power of 600W and irradiation time of 6 min. The equilibrium behavior of PPAC was investigated by performing batch adsorption experiments using methylene blue as adsorbate. Nonlinear adsorption isotherm models, Langmuir, Freundlich and Temkin were used to simulate the equilibrium data. KOH activated sample demonstrated a better development of pore structure, with the BET surface area, total pore volume and average pore size of 1006 m(2)/g, 0.59 m(3)/g and 23.44 angstrom. respectively, while the monolayer adsorption capacity of methylene blue was determined to be 462.10 mg/g. The findings support the potential use of microwave assisted KOH and K2CO3 activation as a promising activation technique. (C) 2011 Elsevier Inc. All rights reserved.