Journal
ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
Volume 35, Issue 5, Pages 633-642Publisher
SPRINGER
DOI: 10.1007/s10653-013-9546-7
Keywords
Arsenic; Peat; Biomass sorbents; Sorption
Categories
Funding
- National Research Programme NatRes
- European Social Fund within the project Support for Doctoral Studies at the University of Latvia
Ask authors/readers for more resources
Arsenic contamination of water is a major problem worldwide. A possible solution can be approached through developing new sorbents based on cost-effective and environmentally friendly natural biomaterials. We have developed new sorbents based on biomaterial impregnation with iron oxyhydroxide. In this study, raw peat material, iron-modified peat, iron-modified biomass (shingles, straw, sands, cane and moss) as well as iron humate were used for the removal of arsenate from contaminated water. The highest sorption capacity was observed in iron-modified peat, and kinetic studies indicated that the amount of arsenic sorbed on this material exceeds 90 % in 5 h. Arsenate sorption on iron-modified peat is characterised by the pseudo-second-order mechanism. The results of arsenic sorption in the presence of competing substances indicated that sulphate, nitrate, chloride and tartrate anions have practically no influence on As(V) sorption onto Fe-modified peat, whereas the presence of phosphate ions and humic acid significantly lowers the arsenic removal efficiency.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available