HEAVY-METAL REMOVAL IN PACKED-BEDS USING APPLE WASTES

被引：70

作者：

MARANON, E

SASTRE, H

机构：

[1] Department of Chemical Engineering, ETSII, University of Oviedo

来源：

BIORESOURCE TECHNOLOGY | 1991年 / 38卷 / 01期

关键词：

HEAVY METALS; APPLE WASTE; CATION EXCHANGE; PACKED BEDS; ATOMIC ABSORPTION SPECTROPHOTOMETRY;

D O I：

10.1016/0960-8524(91)90219-A

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Agricultural waste from apple-juice processing and cider production was used to remove heavy metal cations from solutions. This residual lignocellulosic biomass contains acidic groups with cation exchange properties which can be enhanced by means of chemical modification. The removal/recovery of copper, zinc and nickel ions in packed beds was studied, the variables considered being the influence of chemical treatment, particle size and metal concentration in the solutions percolated. The apple waste showed most affinity for copper ions and the efficiency of the heavy metal removal was greatly increased after the apple waste had been treated with phosphorus(V) oxychloride. After exhaustion of the waste, the metals were eluted with hydrochloric acid, and after subsequent washing the waste was ready for re-use.

引用

页码：39 / 43

页数：5

共 7 条

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