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Indian Journal of Chemical Technology (IJCT) >
IJCT Vol.11 [2004] >
IJCT Vol.11(5) [September 2004] >
| Title: | Effect of salt additives on decolouration of Acid Black 1 dye effluent by ozonation |
| Authors: | Muthukumar, M
Sargunamani, D
Selvakumar, N
Nedumaran, D |
| Keywords: | Ozone
acid dye
inorganic salt
colour removal
COD
TOC |
| Issue Date: | Sep-2004 |
| Publisher: | CSIR |
| IPC Code: | C02 F 1/28, C09 B 62/60 |
| Abstract: | An attempt was made to study the
effect of presence of inorganic salts namely, sodium carbonate, sodium chloride
and sodium sulphate, and their concentrations on decolouration of acid dye
effluent by ozonation. Studies have been conducted at different salt
concentrations and at alkaline pH on Acid Black 1 dye effluent, having a
concentration of 500 µM. It has been found that salt content in the effluent
increases the decolouration time of the acid dye effluent. Higher the salt
content more is the decolouration time and among the salts, sodium carbonate
requires more time for complete decolouration than the sodium chloride and sodium
sulphate. Chemical oxygen demand (COD) reduces by 52, 58 and 62% whereas total
organic carbon (TOC) reduces by 28, 32 and 33% for the salt present in the
effluent, namely sodium carbonate, sodium chloride and sodium sulphate
respectively. IR spectra study confirms the formation of acidic by-products
during ozonation. |
| Page(s): | 612-616 |
| ISSN: | 0975-0991 (Online); 0971-457X (Print) |
| Source: | IJCT Vol.11(5) [September 2004]
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