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Optimum lipid production using agro-industrial wastewater treated microalgae as biofuel substrate.

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Title: Optimum lipid production using agro-industrial wastewater treated microalgae as biofuel substrate.
Authors: Kamyab, Hesam1, Din, Mohd1, Hosseini, Seyed2, Ghoshal, Sib3, Ashokkumar, Veeramuthu1, Keyvanfar, Ali4, Shafaghat, Arezou4, Lee, Chew5, Bavafa, Ali1, Majid, Muhd4 mzaimi@utm.my
Source: Clean Technologies & Environmental Policy. Dec2016, Vol. 18 Issue 8, p2513-2523. 11p.
Subject Terms: *Sewage purification, *Microalgae, *Biomass energy, Palm oil industry, Chlorella sorokiniana
Abstract: Abundant wastewater discharges from palm oil industries in tropical nations being a valuable resource of biodiesel need proper exploration. Research hinted that such wastewater as economical nutrient source or substrate can support the cultivation of microalgae. In this experiment, we have tested the growth and lipid production of five different microalgal strains in palm oil mill effluent (POME). POME as a biofuel substrate is demonstrated to be lucrative for microalgae-assisted lipids production. POME is rich in macro- and micronutrients can be used as a growth medium for algal growth in order to reduce the growth medium cost and environmental pollutions. Among the five microalgal strains tested, Chlorella sorokiniana revealed optimum biomass and lipid production. The productivity was evaluated in terms of chlorophyll content, growth rate, biomass, and lipid content, which discerned to be 0.099/day, 8.0 mg/L day and 2.68 mg/mg cell dry weight (CDW). Furthermore, in this study, an optimization study was carried out to enhance the microalgae to produce high lipid content using carbon-to-nitrogen ratio and different light/dark periods. The presence of nitrogen combined glucose (with a carbon-to-nitrogen ratio 100:7) as an alternative source to carbon displayed higher lipid production of 2.68 (mg/mg CDW) by C. sorokiniana. This study confirms that 8:16 h light/dark condition at C:TN ratio of 100:7 supported to produce high lipid content of 17 mg lipid/mg CDW. The above results revealed that POME could be a suitable growth media for the alga C. sorokiniana to improve the maximum lipid yield for biofuels production. [ABSTRACT FROM AUTHOR]
Copyright of Clean Technologies & Environmental Policy is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Optimum lipid production using agro-industrial wastewater treated microalgae as biofuel substrate.
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  Data: <searchLink fieldCode="AR" term="%22Kamyab%2C+Hesam%22">Kamyab, Hesam</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Din%2C+Mohd%22">Din, Mohd</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Hosseini%2C+Seyed%22">Hosseini, Seyed</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Ghoshal%2C+Sib%22">Ghoshal, Sib</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Ashokkumar%2C+Veeramuthu%22">Ashokkumar, Veeramuthu</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Keyvanfar%2C+Ali%22">Keyvanfar, Ali</searchLink><relatesTo>4</relatesTo><br /><searchLink fieldCode="AR" term="%22Shafaghat%2C+Arezou%22">Shafaghat, Arezou</searchLink><relatesTo>4</relatesTo><br /><searchLink fieldCode="AR" term="%22Lee%2C+Chew%22">Lee, Chew</searchLink><relatesTo>5</relatesTo><br /><searchLink fieldCode="AR" term="%22Bavafa%2C+Ali%22">Bavafa, Ali</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Majid%2C+Muhd%22">Majid, Muhd</searchLink><relatesTo>4</relatesTo><i> mzaimi@utm.my</i>
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  Data: Abundant wastewater discharges from palm oil industries in tropical nations being a valuable resource of biodiesel need proper exploration. Research hinted that such wastewater as economical nutrient source or substrate can support the cultivation of microalgae. In this experiment, we have tested the growth and lipid production of five different microalgal strains in palm oil mill effluent (POME). POME as a biofuel substrate is demonstrated to be lucrative for microalgae-assisted lipids production. POME is rich in macro- and micronutrients can be used as a growth medium for algal growth in order to reduce the growth medium cost and environmental pollutions. Among the five microalgal strains tested, Chlorella sorokiniana revealed optimum biomass and lipid production. The productivity was evaluated in terms of chlorophyll content, growth rate, biomass, and lipid content, which discerned to be 0.099/day, 8.0 mg/L day and 2.68 mg/mg cell dry weight (CDW). Furthermore, in this study, an optimization study was carried out to enhance the microalgae to produce high lipid content using carbon-to-nitrogen ratio and different light/dark periods. The presence of nitrogen combined glucose (with a carbon-to-nitrogen ratio 100:7) as an alternative source to carbon displayed higher lipid production of 2.68 (mg/mg CDW) by C. sorokiniana. This study confirms that 8:16 h light/dark condition at C:TN ratio of 100:7 supported to produce high lipid content of 17 mg lipid/mg CDW. The above results revealed that POME could be a suitable growth media for the alga C. sorokiniana to improve the maximum lipid yield for biofuels production. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Clean Technologies & Environmental Policy is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1007/s10098-016-1212-1
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      – SubjectFull: Chlorella sorokiniana
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