merged

Harvesting of Chlorella sp. Using Aspergillus niger As Bio-Flocculant
Safrida Aini Bt Safrudin
Supervisor: Prof. Ir. Dr. Ahmad bin Jusoh
Bachelor of Technology (Environment)
School of Ocean Engineering
Universiti Malaysia Terengganu
Rapid development of aquaculture industry has contributed to highly amount of
nutrient in wastewater that can lead to eutrophication and deterioration of water
quality. Phycoremediation is one of the biological techniques in water treatment that
offer low cost treatment in removing the excess nutrient content in wastewater using
microalgae. The aim of this study is to control the microalgae biomass through the
process of microalgae harvesting using fungus, Aspergillus niger as bio-flocculant.
Besides the objectives of this study are to monitor the growth pattern of microalgae,
Chlorella sp. and to determine the optimum condition that effect the harvesting
process such as dosage of bio-flocculant and pH value of treatment. The methodology
that will be used for this study consists of three phases which are cultivation of
microalgae, cultivation of fungus and mixing of both microalgae and fungus for
harvesting process. The result of this study indicated that the optimum dosage of bio
flocculant is 30 gL -1 while the optimum pH value of the treatment is in the range 6 to
8. Harvesting microalgae Chlorella sp. using fungus Aspergillus niger is promising a
good performance in treating the wastewater from aquaculture industry.
90 | U M T U N D E R G R A D U A T E R E S E A R C H D A Y 2019