Utilization of biodigester effluent for production of Chlorella

摘要

TheaimoftheresearchwastostudytheutilizationofbiodigestereffluentasfertilizertoraisebiomassofChlorella.Thedesignwascompletelyrandomized(CRD)with5treatmentsand3replicates.Biodigestereffluent(880mgN/liter)wasdiluted40timestoyieldthedilutedeffluent(22mgN/liter).Theindividualtreatmentswere:dilutedbiodigestereffluent(22mgN/liter)nbsp;replacingtapwaterat100,75,50,25and0%.Thecontroltreatment(0%effluent)wasfertilizedwithWanleadditivesolution.nbsp;Theexperimentwascarriedoutusingcolloidalglasscontainersof15litercapacitywhichwereputinabuildingwithatransparentroofand24hlightfroma40Wbulb.Thetriallastedfor7days.Thedensityofalgaeaswellasenvironmentalfactors(pH,temperature)weremonitoreddaily.Thetreatmentusing25%ofdilutedbiodigestereffluent(5.5mgN/literinthegrowthmedium)supportedthehighestdensityofChlorella,withstablegrowth,whichwascomparablewiththecontroltreatmentwhichusedastandardgrowthmediumforChlorella(Wanleadditive).nbsp;