Cultivation of Spirulina sp. in effluent from natural rubber-processing factory
1988
Phimphan Tansakul | Arak Jantasilp (Prince of Songkhla Univ., Songkhla (Thailand). Faculty of Science. Dept. of Biology)
The utilization of effluent discarded from a rubber-processing plant as basic medium for Spirulina culture was studied under laboratory conditions. Growth rate of Spirulina was highest in undiluted effluent compared to that in concentration of 0. 20 and 60% effluent in distilled water. The requirement for some essential chemical compounds added to the effluent as algal nutrient was also studied. Only NaNO3 was needed in the concentration of 2.5 g/l, whereas the addition of K2HPO4 and K2SO4 was unable to promote algal growth and eventually exhibited toxic effect. Two nutrient combinations of NaNO3(2.5 g/l) + K2HPO4 (0.1 g/l) and NaNO3 (2.5 g/l) + K2SO4 (0.5 g/l) mixed in the effluent were tested to determine algal growth, but Spirulina growth was poor in both combinations. It is concluded that Spirulina was able to exploit effluent from rubber-processing factory as a cheap nutrient source simply supplemented with NaNO3 and showed better growth than in standard Zarrouk medium.
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