Screening and optimising metal salt concentration for marine microalgae harvestiing by flocculation / Nur Anis Saarani
Material type:
TextPublication details: Kuantan, Pahang : UMP, 2012Description: xiii, 47 p. : ill. ; 30 cm. + 1 CD-ROMISBN: - THE0004384(Local)
| Item type | Current library | Call number | Copy number | Status | Date due | Barcode | |
|---|---|---|---|---|---|---|---|
Final Year Report
|
UMPLIB GAMBANG | TP248.25.B55 A55 2012 rs Bc. (Browse shelf(Opens below)) | 1 | Not for loan | 0000068071 | ||
|
Final Year Report
|
UMPLIB GAMBANG | CD 6374 | TP248.25.B55 A55 2012 rs Bc. (Browse shelf(Opens below)) | 1 | Not for loan | 0000068072 |
Project paper (Bachelor of Chemical Engineering (Biotechnology)) -- Universiti Malaysia Pahang - 2012
Bibliography : p.34-36
Biodiesel is one of the most renewable fuels that are non-toxic and biodegradable.Demand of biodiesel is constantly increasing as the reservoir of fossil fuel are depleting.The microalgae biomass with high oil content is significant as a sustainable resource for biodiesel production. Production of biodiesel using microalgae biomass appears to be a feasible alternative because there is no conflict with food supply compared with the first generation biofuels, such as oil crops and animal fat. This report deals with thescreening andoptimisation of metal saltsfor harvesting marine microalgae by flocculation. The metal salts studies areferric chloride, aluminium sulphate and ferric sulphate. WildNannochloropsisstrains of microalgae werecultivated aseptically in sea water for 7 days, after that the microalgae was harvested by usingflocculation step with different concentration of metal salt. In order to monitor the efficiency of the metal salt,the turbidity region of microalgae in glass cylinderbefore and afterflocculation wasobserved. Besides that cell dry weight and FAME (Fatty Acid Methyl Ester)producedwasalsocomparedfor three flocculation agentused.The most efficient metal saltwasthen furtheroptimized for its best performedconcentration and pH.Chloride salts (FeCl3) was found to bemore efficient in comparison with sulfate salts (Al2 (SO4)3 and Fe2(SO4)3)in harvesting microalgae. FeCl3 gives the highest flocculation efficiency, cell dry weight and FAMEproduction whichare99.3%,0.0791g, 44.3% at 1.0 M concentration of FeCl respectively.Ferric Chloridewas further optimized, where theoptimum pH and concentration of FeCl3 are 7.5and0.9M,with flocculation efficiencyof89.3%, cell dry weightof3.5g and FAME productionof43.3%.In conclusion 0.9 M ferric chloride salt at pH 7.5 is optimum in harvesting microalgae by flocculation.