Biodegradation activity of crude oil by Chlorella sp. under mixotrophic conditions

Romero, Deimer Vitola; Cordero, Alexander P�rez; Garizado, Yorly Oviedo

doi:10.17485/ijst/2018/v11i29/127832

Cited by 10 publications

(2 citation statements)

References 3 publications

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“…In industrial applications, these methods are costly (USD 500/m 2 to USD 1000/m 2 ), complicated operation and ineffective when oil droplets are finely emulsified with size of less than 10 μm (Al-Yaari et al 2014). Therefore, bioremediation of oil pollutant via biodegradation or adsorption by microorganism appears as a feasible approach for lower operational cost and better environmental benefits (Romero et al 2018). Furthermore, literatures on bioremediation of crude oil spill had demonstrated positive impacts on water quality after treating with different species of micro-and macroalgae (e.g., Chlorella sp., Dicrateria sp., Skeletonema costatum and Phaeodactylum tricornutum) (Pi et al 2015;Radwan et al 2002;Romero et al 2018;Xaaldi Kalhor et al 2017).…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, bioremediation of oil pollutant via biodegradation or adsorption by microorganism appears as a feasible approach for lower operational cost and better environmental benefits (Romero et al 2018). Furthermore, literatures on bioremediation of crude oil spill had demonstrated positive impacts on water quality after treating with different species of micro-and macroalgae (e.g., Chlorella sp., Dicrateria sp., Skeletonema costatum and Phaeodactylum tricornutum) (Pi et al 2015;Radwan et al 2002;Romero et al 2018;Xaaldi Kalhor et al 2017). In fact, the past studies had proven that crude oil hydrocarbons could be a promising organic carbon source to grow microalgae (El-Sheekh et al 2013;Radwan et al 2002).…”

Section: Introductionmentioning

confidence: 99%

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The potential of using microalgae for simultaneous oil removal in wastewater and lipid production

Choong

Yokoyama

Matsumura

et al. 2020

Int. J. Environ. Sci. Technol.

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Microalgae have received considerable attention in recent years due to their significant potential in contaminants removal from wastewater and can be used as a sustainable feedstock for biofuel production. However, existing researches on microalgae are mainly focused on inorganic nutrients (i.e., nitrogen and phosphorus) removal, while oil as one of the major pollutant classes has been lack of study. Therefore, the present work was aimed to use microalgae to remove oil in wastewater and for simultaneous lipid production. In this study, variables such as ozone flowrate, oil concentration, amount of microalgae seeds and cultivation pH value were introduced to optimize the oil removal efficiency and lipid yield. The optimized parameters that resulted the highest oil removal percentage (41.56%) were as follows: 0.4 L/min of ozone flowrate, 3 mL/L of oil concentration, 200 mL/L of microalgae seeds and cultivation pH value of 3 to 5. Under this condition, the lipid content embedded within the microalgae cells was 41.5% and mainly consisted of unsaturated fatty acids. The present results affirmed the capability of microalgae to remove oil from wastewater and could produce higher lipid yield from the metabolized oil.

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