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Use of Chlorella vulgaris for bioremediation of textile wastewater

Author:
Lim, Sing-Lai, Chu, Wan-Loy, Phang, Siew-Moi
Source:
Bioresource technology 2010 v.101 no.19 pp. 7314-7322
ISSN:
0960-8524
Subject:
Chlorella vulgaris, biomass production, bioremediation, chemical oxygen demand, chlorophyll, color, dyes, fabrics, models, nutrients, pollutants, ponds, wastewater
Abstract:
The potential application of Chlorella vulgaris UMACC 001 for bioremediation of textile wastewater (TW) was investigated using four batches of cultures in high rate algae ponds (HRAP) containing textile dye (Supranol Red 3BW) or TW. The biomass attained ranged from 0.17 to 2.26mg chlorophyll a/L while colour removal ranged from 41.8% to 50.0%. There was also reduction of NH₄-N (44.4-45.1%), PO₄-P (33.1-33.3%) and COD (38.3-62.3%) in the TW. Supplementation of the TW with nutrients of Bold's Basal Medium (BBM) increased biomass production but did not improve colour removal or reduction of pollutants. The mechanism of colour removal by C. vulgaris is biosorption, in accordance with both the Langmuir and Freundlich models. The HRAP using C. vulgaris offers a good system for the polishing of TW before final discharge.
Agid:
568829