Essay Examples on Cedar Crest College

Algal nutrient recycle

Algal nutrient recycle Catalytic liquefaction of algal biomass yields an organic phase which serves as the bio crude This phase is rich in carbon and hydrogen All the inorganic nutrients from the biomass get accumulated in the aqueous phase 20 These nutrients can be recycled back to the system making it a rich medium for algal growth Cultivation of microalgae Chlorella vulgaris Scenedesmus dimorphus and cyanobacteria Spirulina Platensis was attempted by Biller et al 2012 in process water obtained after hydrothermal liquefaction The resultant growth obtained after 400 times dilution of process water was comparable to control growth medium making it possible to develop a sustainable closed loop process for growing algal biomass and obtaining oil from the process 40 c Media replacement by waste streams These are commonly the effluent streams from domestic and industrial outlets These nutrient sources completely replace the algae growth medium eliminating the dependence of fertilizers as well as water fertilizer replacement by waste streams like swine feedlot dairy effluent and tannery effluent which contain high concentration of organic carbon and nitrogen have been previously attempted for the cultivation of microalgae 41 43 



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