Thus, sludge disposal costs and secondary pollution are avoided.
In addition, PSB biomass is a good source of other value-added products
such as single cell protein, biopolymers, carotene, and other pigments
that are used in nutritional supplements, cosmetics,medicine, and animal
feed [11], which further enhances economic returns. Finally, there is an
increasing interest in PSB and algae as a bio-energy feedstock,which provides
another market outletwith long-term trends of increasing environmental
and economic value [12].
Thus, sludge disposal costs and secondary pollution are avoided.In addition, PSB biomass is a good source of other value-added productssuch as single cell protein, biopolymers, carotene, and other pigmentsthat are used in nutritional supplements, cosmetics,medicine, and animalfeed [11], which further enhances economic returns. Finally, there is anincreasing interest in PSB and algae as a bio-energy feedstock,which providesanother market outletwith long-term trends of increasing environmentaland economic value [12].
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