PHAE from Dairy Wastewaters Suitable for Algae Cultivation
April 29, 2015http://link.springer.com/article/10.1007/s12155-015-9619-9/fulltext.html
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Nutrients in dairy wastewaters can be remediated by absorption into algal biomass. Previously, ADE, as waste created by anaerobically digested manure, has been found useful for algal cultivation. An alternate manure processing generates another distinct waste, PHAE, which is yet to be tested for algal cultivation. The team of Kevin Feris of the Boise State University evaluated PHAE for use in algae cultivation.
The growth of the algae Chlorella vulgaris in PHAE was evaluated. Growth rates of C. vulgaris were elevated in PHAE than in ADE. Furthermore, the growth phase of the algae lasted two times longer for PHAE, resulting in a higher stationary phase algal concentration.
Growth in ADE was also limited by specific inhibitory properties. Maximum nitrogen removal rates for PHAE were also found higher. Moreover, the biomass from PHAE contained more lipids and thus has a greater potential as a feedstock for biofuel production.
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