Evaluation of the suitability of industrial wastewater for the mass production of Spirulina platensis (Nordst.) gomont.

Date

3-1989

Degree

Bachelor of Science in Biology

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Macrina T. Zafaralla

Abstract

The study was conducted to evaluate the suitability of the industrial wastewater for the mass production of Spirulina platensis based on a) the nutrient and heavy metal contents of the wastewater, b) the nitrogen and protein content of the product, c) the productivity of algal cultures and d) the physico-chemical characteristics of the residual wastewater. Different batches of wastewater had different chemical characteristics in terms of ortho-P and nitrate-N levels. With exception to ortho-P, all other variables, namely nitrate-N, carbonate, bicarbonate and calcium carbonate were not altered by filtration. Optical density, however, tended to decrease with filtration. Heavy metal analysis revealed the presence of iron, manganese, copper and zinc in wastewater as well as in tap water, distilled water and manure extract. Cadmium was not detected in wastewater and distilled water but was present in tap water and cow manure extract in amounts not exceeding the standard. In N- and P- supplemented medium, half-strength wastewater tended to produce higher yield (g/L/da) than full-strength wastewater.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

Thesis

Document Type

Thesis

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