THE POTENCY OF MICROALGAE (CHLORELLA VULGARIS) IN REDUCING THE LEVEL OF AMMONIUM AND ORTHOPHOSPHATE IN BIOSLURRY MEDIA

Abstract

In biogas production using dairy manure, an anaerobic digestion process also produced bioslurry as a byproduct, also known as Anaerobically Digested Dairy Manure Wastewater (ADDMW), which is rich in nutrient. The availability of some organic compunds such as ammonium, phosphate, and other nutrients make  ADDMW potentially to be used as growth media  to grow autotrophic organism, including microalgae. Furthermore microalgae potentially could reduce organic content  in ADDMW, thus play a role as phycoremediator to organic waste water. In this study we used ADDMW as a medium for the growth of microalgae, determining its level of reduction in ammonium and orthophosphate content of ADDMW. The result showed that microalgae C. vugaris can be grown in ADDMW media and can reduce its organic content i.e. ammonium (95%) and orthophosphate (65-78%), therefore potential to be used as phycoremediator.