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International Journal of Environment Science and Technology
Center for Environment and Energy Research and Studies (CEERS)
ISSN: 1735-1472
EISSN: 1735-2630
Vol. 13, No. 2, 2016, pp. 749-754
Bioline Code: st16069
Full paper language: English
Document type: Research Article
Document available free of charge

International Journal of Environment Science and Technology, Vol. 13, No. 2, 2016, pp. 749-754

 en 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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