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Title:	Integrated palm oil mill effluent treatment and CO2 fixation by native mircoalgae
Authors:	Harizah Bajunaid Hariz (P83951)
Supervisor:	Mohd Sobri Takriff, Prof. Ir. Dr.
Keywords:	Palm oil industry -- Waste disposal Dissertations, Academic -- Malaysia Universiti Kebangsaan Malaysia -- Dissertations
Issue Date:	12-Sep-2018
Description:	POME consists of high concentration of nutrients and organic materials that can pollute the environment if it is not properly treated. In conventional treatment of POME, the ponding system emitted GHGs to the surrounding. Native microalgae species have potential for treating POME and capture CO2. There are advantages of using microalgae for POME treatment including microalgae byproduct commercialization for aquaculture feed and it’s potential to offset cost allocated for the treatment.The objectives of this research are to study the growth of native microalgae in BBM and POME at different operation conditions, optimization of the operation conditions for effluent treatment by Scenedesmus sp. (UKM9) and Chlamydomonas sp. (UKM6), optimization of operation conditions for CO2 fixation by Chlorella sp. (UKM2) and integration of the effluent treatment and CO2 fixation. The isolated native species of Scenedesmus sp. (UKM9), Chlamydomonas sp. (UKM6) and Chlorella sp. (UKM2) were used in this research. The microalgae growth study was done by analyzing the dry cell weight of the biomass. RSM based on CCD was used for the optimization of the operating conditions for effluent treatment and CO2 fixation experiment. The operating parameters such as inoculum concentration (mgL-1), agitation speed (rpm), POME concentration (% v/v), gas flow rate (mL min-1) and CO2 concentration (% v/v) were optimized. The nutrient reduction such as TN, PO₄ ³¯, COD and TOC were analyzed as the responses while the CO2 fixation rate were calculated based on the final microalgae biomass obtained. The biomass biochemical composition such as lipid, carbohydrate and protein were analyzed by solvent extraction method. In objective 1, in aerated condition, all three native species grow at highest rate when 30 (%v/v) of inoculum concentration were introduced into POME and BBM with the growth rate range of 0.19-0.51 day-1. In non-aerated condition, microalgae show interest to be cultivated in lower inoculum concentration which was 20 (% v/v) for Chlamydomonas sp. (UKM6) and Chlorella sp. (UKM2) with the growth rate range of 0.12-0.21 day-1 and 10 (% v/v) for Scenedesmus sp. (UKM9) with the growth rate of 0.19-0.2 day-1. In objective 2, POME concentration of 30 (% v/v), agitation speed of 96 rpm and inoculum concentration of 29 (% v/v) were obtained as optimized condition for Chlamydomonas sp. (UKM6) with 49% of COD, 53% of PO₄ ³¯and 38% of TN as the nutrient reduction performance. While for Scenedesmus sp. (UKM9), POME concentration of 84 (% v/v), agitation speed of 99 rpm and inoculum concentration of 30 (% v/v) were obtained as optimized condition with 39% of COD, 55% of PO₄ ³¯and 42% of TN as the nutrient reduction performance. CO2 concentration of 10 (% v/v), gas flow rate of 1670 (mL/min) and inoculum concentration of 25 (% v/v) were obtained as optimized condition for Chlorella sp. (UKM2) with 81% of TN reduction and 0.12 g CO2 L¯¹ day ¯¹. CO2 fixation rate. In final objective, the nutrient reduction from the integrated system of effluent treatment and CO2 fixation by Scenedesmus sp. (UKM9) and Chlorella sp. (UKM2) were up 86% of TN, 85% of PO₄ ³¯, 77% of TOC and 48% of COD. The CO2 fixation rate by Chlorella sp. (UKM2) was 0.8287 g of CO2 L¯¹ day ¯¹.,Master of Science
Pages:	190
Call Number:	TD899.O54H347 2018 3 tesis
Publisher:	UKM, Bangi
Appears in Collections:	Faculty of Engineering and Built Environment / Fakulti Kejuruteraan dan Alam Bina

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