NDLI: Microalgae culture to treat piggery anaerobic digestion effluent

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Microalgae culture to treat piggery anaerobic digestion effluent

Content Provider	Semantic Scholar
Author	Ayre, Jeremy Miles Wilson, E. O.
Copyright Year	2014
Abstract	The use of microalgae technology for the treatment of piggery anaerobic digestion effluent offers attractive advantages over current wastewater treatment systems used by Australian piggeries. These include recovery of nutrients in the form of biomass that might be used as pig feed or to enable the production of biofuel, better recycling of water, improved economic returns and better environmental outcomes. This study utilised bioprospecting strategies which incorporated the selection and culture of algae species which were capable of growing on undiluted, untreated piggery anaerobic digestion effluent for this purpose. The successful isolation of a Chlorella species using a synthetic medium containing 500 mg NH3-N.L 1 and the operation of several raceway ponds over a course of 20 weeks with ammonia concentrations of up to 1,600 mg NH3-N.L 1 with a mixed algae culture provided data to support the hypothesis that algae culture is not out of reach for this application. The data showed that high pH levels, temperature extremes and variable nutrient composition could be accommodated through the careful management of an outdoor pond system. It was also found that some aspects of the algae growth performance such as chlorophyll content can be improved by the addition of CO2 to the culture medium.
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://porkcrc.com.au/wp-content/uploads/2014/05/140420-Thesis-J-Ayre.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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