Valuation of wastewater treatment and biodiesel production from microalgae by direct transesterification method
Taher, Z., Mahfouz, A., Elhenawy, S., Rabea, H., Sidkey, N. (2022). Valuation of wastewater treatment and biodiesel production from microalgae by direct transesterification method. EKB Journal Management System, 65(131), 895-907. doi: 10.21608/ejchem.2022.132259.5818
Zeinab A. Taher; Amira Y. Mahfouz; Samy B. Elhenawy; Hassan A. Rabea; Nagwa M. Sidkey. "Valuation of wastewater treatment and biodiesel production from microalgae by direct transesterification method". EKB Journal Management System, 65, 131, 2022, 895-907. doi: 10.21608/ejchem.2022.132259.5818
Taher, Z., Mahfouz, A., Elhenawy, S., Rabea, H., Sidkey, N. (2022). 'Valuation of wastewater treatment and biodiesel production from microalgae by direct transesterification method', EKB Journal Management System, 65(131), pp. 895-907. doi: 10.21608/ejchem.2022.132259.5818
Taher, Z., Mahfouz, A., Elhenawy, S., Rabea, H., Sidkey, N. Valuation of wastewater treatment and biodiesel production from microalgae by direct transesterification method. EKB Journal Management System, 2022; 65(131): 895-907. doi: 10.21608/ejchem.2022.132259.5818

Valuation of wastewater treatment and biodiesel production from microalgae by direct transesterification method

Egyptian Journal of Chemistry
Volume 65, Issue 131, December 2022, Page 895-907  XML PDF (909.07 K)
Document Type: Original Article
DOI: 10.21608/ejchem.2022.132259.5818
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Authors
Zeinab A. Taher1; Amira Y. Mahfouz email 1; Samy B. Elhenawy2; Hassan A. Rabea3; Nagwa M. Sidkey1
1Botany and Microbiology Department, Faculty of Science, Al-Azhar University (Girls), Cairo, Egypt
2Process Development Department, Egyptian Petroleum Research Institute (EPRI), Cairo, Egypt
3Department of Biochemistry, Faculty of Agriculture, Al-Azhar University (Boys), Cairo, Egypt.
Abstract
Recently, algae have become the latest feasible source being targeted for biofuel production since they exhibit several attractive features. An investigation concerning the treatment of wastewater and the production of biodiesel by different cyanobacteria and micro-algae has been undertaken. Twelve soil and water samples were collected from different localities in Egypt. Eleven microalgae were isolated from collected soil and water samples and subjected to different purification methods. The isolated microalgae were used in the treatment of wastewater samples, and the physical and chemical properties of wastewater samples were evaluated before and after treatment. Determination of lipid content of all isolated microalgae was carried out and showed 2.10 up to 5.13% of lipid. Factors affecting the lipid content productivities by selected promising microalgae were investigated viz. pH, incubation periods, and nitrogen sources. Three isolates were selected for cultivation on large scale, Oscillatoria chalybea (2) with dry weight 1028.4 mg and lipid yield 0.72%, O. chalybea (3) with dry weight 480.4 mg and lipid yield 0.9%, and O. chalybea (5) with dry weight 524.4 mg and lipid yield 1.01%. Extraction of oil from microbial biomass was done by Bligh and Dyer method. The lipid composition was determined as fatty acid methyl esters (FAMEs) through the direct transesterification method. The conversion of the extracted oil into biodiesel was analyzed by standard gas chromatographic technique.
Keywords
Cyanobacteria; Oscillatoria; Wastewater treatment; Lipid content; Transesterification; Biodiesel
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