玉米生物量不同部位对模拟水溶液中Zn2+离子的吸附特性

C. Duru, I. Duru, F. Ibe, M. C. Enedoh
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引用次数: 11

摘要

研究并比较了不同条件下玉米生物质的皮、茎、穗轴和谷壳对溶液中锌离子的去除效果。吸附金属离子前后不同部位的傅里叶变换红外光谱表明,壳和穗轴比谷壳和秸秆具有更多的有效官能团和吸附Zn 2+离子的活性位点。溶液中zn2 +离子的去除率随pH值的增加而增加。该值也随谷壳和穗轴生物量负荷的增加而增加,但在研究谷壳和秸秆时,Zn 2+离子去除率随生物量负荷的增加而交替增加和减少。在最佳pH和生物质负荷条件下,玉米壳的去除率最高,为72.8%,是一种很有前景的绿色包装材料,可用于工业规模水处理。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Profiling of Zn2+ Ion Sorption in Modeled Aqueous Solutions by different Parts of Maize Biomass
The efficiency of the husk, stalk, cob and seed chaff from maize biomass in the removal of Zn ions from solution under different conditions was studied and compared. Fourier Transform Infrared spectra of the different biomass parts before and after adsorption of metal ions showed that the husk and cob had more available functional groups and as such active sites for the adsorption of Zn 2+ ions than the seed chaff and stalk. Percentage removal of Zn 2+ ions from solution increased with increase in the studied pH range for all the parts. This value also increased with increase in biomass load for the husk and cob but showed an alternating increase and decrease in Zn 2+ ions removal as biomass load increased when the seed chaff and stalk were studied. At optimum pH and biomass load for the studied parts the maize husk gave the best removal efficiency of 72.8 %, making it a promising green packing material for industrial scale water treatment application.
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