Waste waters decoloration after textile dyeing by maize cob ash | Korišćenje pepela klipa kukuruza za dekolorizaciju otpadne vode posle bojenja tekstila
2007
Mizdraković, M., Tehnološki fakultet, Leskovac (Serbia) | Šmelcerović, M., Tehnološki fakultet, Leskovac (Serbia) | Đorđević, D., Tehnološki fakultet, Leskovac (Serbia)
Adsorption processes with ash could constitute a simple, selective and economical alternative to conventional physical-chemical treatments. The natural adsorbent application for disperse dye has been investigation at this paper. Natural ash derived after maize cob combustion is very cheap materials for purification wastewater from textile industry, i.e. wastewater after textile dyeing processes. The capacity of that adsorbent to adsorb some dyes was well enough in comparison to conventional adsorbents. A coloration removal of over 90% was achieved in approximately 15 min because of the high affinity between dyes and adsorbent. The adsorption behavior of textile disperse dyes on maize cob ash samples was investigated using a UV-vis spectrophotometric technique. The effect of ash concentration, initial dye concentrations, and shaking time on adsorption was investigated. Moreover, adsorption coverage over the surface of ash particles was studied using two well-known isotherm models: Langmuir's and Freundlich's. These results suggest that the dye adsorption process mediated by ash, as adsorbent, has a potential for large-scale treatment of textile mill discharges.
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