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International Journal of Environment Science and Technology
Center for Environment and Energy Research and Studies (CEERS)
ISSN: 1735-1472 EISSN: 1735-1472
Vol. 13, No. 2, 2016, pp. 749-754
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Bioline Code: st16069
Full paper language: English
Document type: Research Article
Document available free of charge
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International Journal of Environment Science and Technology, Vol. 13, No. 2, 2016, pp. 749-754
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Sugar mill effluent treatment using Spirulina for recycling of water, saving energy and producing protein
Deshmane, A. B.; Darandale, V. S.; Nimbalkar, D. S.; Nikam, T. D. & Ghole, V. S.
Abstract
Water security may be regarded as a first step
toward achieving food and energy security. Efficient use of
fresh water resources and recycling of wastewater after
proper treatment are viewed as tools to achieve water
sustainability. Sugar industry can have good potential to
treat and reuse its effluents. This potential is not realized by
prevailing effluent treatment technologies because of high
capital and operation cost of treatment process. More upon,
these technologies require substantial amount of energy
(electricity) as well as chemicals and labors. We have
therefore focused on the development of a technology that
would help to overcome these limitations. The alga—
Spirulina—was our choice to (1) treat the effluent and (2)
use the sugar mill effluent as its growth medium. Experiments
using Spirulina at secondary treatment stage showed
91 % reduction in chemical oxygen demand in 108-h
treatment time. Further, biochemical analysis of Spirulina
harvested from the sugar mill effluent treatment tanks
revealed that the harvested biomass has high protein levels.
Spirulina is well known for its usage as a protein supplement
and therefore can be used as an additional source of
revenue generation.
Keywords
Sugar mill effluent (SME) treatment; Spirulina; Chemical oxygen demand; Protein content of Spirulina
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