Journal of Environmental Health and Sustainable Development
مجله بهداشت محیط و توسعه پایدار
J Environ Health Sustain Dev
Medical Sciences
http://jehsd.ssu.ac.ir
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jalali
1401
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gregorian
2022
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Sanitary Wastewater Supplemented with Glycerol to Obtain Lipid-Rich Microalgal Biomass
Environmental biotechnology and nanotechnology
Original articles
<div style="text-align: justify;"><span style="font-size:10pt"><span style="line-height:115%"><span sans-serif="" style="font-family:Calibri,"><b><i><span new="" roman="" style="font-family:" times="">Introduction:</span></i></b><span new="" roman="" style="font-family:" times=""> Mixotrophic microalgae systems have great potential for bioenergy production and wastewater treatment. Anaerobic-treated wastewater supplemented with carbon can improve biomass yield and quality, as it presents low carbon content. Alternative carbon sources in microalgae cultivation, such as glycerol, are essential for minimizing the economic and environmental impacts caused by biomass production, and improving the profile of fatty acids. This study aimed to increase biomass production and the lipid content with glycerol as the carbon source for microalgae cultivation from sanitary wastewater. </span></span></span></span><br>
<span style="font-size:10pt"><span style="line-height:115%"><span sans-serif="" style="font-family:Calibri,"><b><i><span new="" roman="" style="font-family:" times="">Materials and Methods: </span></i></b><span new="" roman="" style="font-family:" times="">The microalgae behavior in the wastewater was pilot tested using glycerol supplementation at 7.5, 10.5, and 12.5 g L<sup>-1</sup>. </span></span></span></span><br>
<span style="font-size:11pt"><span style="line-height:115%"><span sans-serif="" style="font-family:Calibri,"><b><i><span style="font-size:10.0pt"><span style="line-height:115%"><span new="" roman="" style="font-family:" times="">Results:</span></span></span></i></b> <span style="font-size:10.0pt"><span style="line-height:115%"><span new="" roman="" style="font-family:" times="">In all the experiments with sanitary wastewater, the microalgae production presented <i>Chlorella</i> sp. as the predominant species.</span></span></span><span style="font-size:10.0pt"><span style="line-height:115%"><span new="" roman="" style="font-family:" times=""> The best biomass (3.78 ± 1.12 g L<sup>-1</sup>) and lipid (35.67 ± 0.80%) yields were found at 12.5 and 10.5 g L<sup>-1 </sup>of glycerol, respectively.</span></span></span></span></span></span><br>
<b><i><span style="font-size:10.0pt"><span style="line-height:115%"><span new="" roman="" style="font-family:" times="">Conclusion:</span></span></span></i></b><span style="font-size:10.0pt"><span style="line-height:115%"><span new="" roman="" style="font-family:" times=""> The microalgae produced more lipids with glycerol supplementation. An attractive profile for biodiesel was found regarding the fatty acids in the biomass.</span></span></span></div>
Microalgae, Wastewater, Bioremediation, Glycerol, Fatty Acids
1816
1826
http://jehsd.ssu.ac.ir/browse.php?a_code=A-10-507-1&slc_lang=en&sid=1
Eduarda Torres
Amaral
duuudatorres@hotmail.com