Abstract:
:In this work, the removal of arsenite, As(III), and arsenate, As(V), from aqueous solutions onto thermally processed dolomite (charred dolomite) via microcolumn was evaluated. The effects of mass of adsorbent (0.5-2 g), initial arsenic concentration (50-2000 ppb) and particle size (<0.355-2 mm) on the adsorption capacity of charred dolomite in a microcolumn were investigated. It was found that the adsorption of As(V) and As(III) onto charred dolomite exhibited a characteristic 'S' shape. The adsorption capacity increased as the initial arsenic concentration increased. A slow decrease in the column adsorption capacity was noted as the particle size increased from>0.335 to 0.710-2.00 mm. For the binary system, the experimental data show that the adsorption of As(V) and As(III) was independent of both ions in solution. The experimental data obtained from the adsorption process were successfully correlated with the Thomas Model and Bed Depth Service Time Model.
journal_name
Environ Technoljournal_title
Environmental technologyauthors
Salameh Y,Al-Muhtaseb AH,Mousa H,Walker GM,Ahmad MNdoi
10.1080/09593330.2014.929181subject
Has Abstractpub_date
2014-11-01 00:00:00pages
3029-40issue
21-24eissn
0959-3330issn
1479-487Xjournal_volume
35pub_type
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