Chemical activation of hickory and peanut hull hydrochars for removal of lead and methylene blue from aqueous solutions

被引：57
作者：
Fang, June [1 ]
Gao, Bin [1 ]
Mosa, Ahmed [1 ,2 ]
Zhan, Lu [1 ,3 ]
机构：
[1] Univ Florida, Dept Agr & Biol Engn, Gainesville, FL 32611 USA
[2] Mansoura Univ, Fac Agr, Soils Dept, Mansoura, Egypt
[3] East China Normal Univ, Sch Ecol & Environm Sci, Shanghai Key Lab Urban Ecol Proc & Ecorestorat, Shanghai, Peoples R China
来源：
CHEMICAL SPECIATION AND BIOAVAILABILITY | 2017年 / 29卷 / 01期
关键词：
Activated carbon; activation; adsorption; heavy metals; organic pollutants; PHYSICAL ACTIVATION; HEAVY-METALS; CARBON; BIOCHAR; WASTE; TEMPERATURE; ADSORPTION; PYROLYSIS; PHOSPHATE; SORPTION;
D O I：
10.1080/09542299.2017.1403294
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
Hickory and peanut hydrochars were chemically activated with KOH and H3PO4 and tested for their ability to remove methylene blue and lead from aqueous solutions. The physicochemical characteristics of the activated hydrochars determined were surface area, pore volume, and elemental composition. Kinetics and isotherm studies were then conducted on methylene blue adsorption. Compared to their nonactivated counterparts, the chemically activated hydrochars had higher surface areas and more functional groups. Activated hydrochars also had greater methylene blue and lead adsorption rates, which can be attributed to the improved physicochemical characteristics. H3PO4 activated hydrochars removed more contaminants than the corresponding KOH ones.
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收藏
页码：197 / 204
页数：8
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