The Effect of Microalgae Harvesting on Lipid for Biodiesel Production

2019 ◽  
Vol 19 ◽  
pp. 1582-1590 ◽  
Author(s):  
Nur Hidayah Mat Yasin ◽  
Nurafifah Izzati Shafei ◽  
Nur Hanani Rushan ◽  
Noor Raihana Abu Sepian ◽  
Farhan Mohd Said
Keyword(s):  
Biodiesel Production ◽  
Microalgae Harvesting

Dynamic Microfiltration in Microalgae Harvesting for Biodiesel Production

2011 ◽  
Vol 50 (4) ◽  
pp. 2455-2460 ◽  
Author(s):  
Sergio D. Rios ◽  
Ester Clavero ◽  
Joan Salvadó ◽  
Xavier Farriol ◽  
Carles Torras
Keyword(s):  
Biodiesel Production ◽  
Microalgae Harvesting

Microalgae harvesting and cell disruption: a preliminary evaluation of the technology electroflotation by alternating current

2014 ◽  
Vol 70 (2) ◽  
pp. 315-320 ◽  
Author(s):  
Riamburgo Gomes de Carvalho Neto ◽  
José Gilmar da Silva do Nascimento ◽  
Mayara Carantino Costa ◽  
Alexandre Colzi Lopes ◽  
Eliezer Fares Abdala Neto ◽  
...  
Keyword(s):  
Lipid Extraction ◽  
Alternating Current ◽  
Cell Disruption ◽  
Biodiesel Production ◽  
Attractive Potential ◽  
Preliminary Evaluation ◽  
Waste Stabilization Ponds ◽  
High Productivity ◽  
Microalgae Harvesting ◽  
Batch Time

Some species of microalgae have high productivity and lipid content, which makes them good candidates for biodiesel production. Biomass separation and cell disruption are important steps in biodiesel production from microalgae. In this work, we explored the fundamentals of electroflotation by alternating current (EFAC) with non-consumable electrodes to simultaneously harvest microalgae and disrupt cells from mixed microalgae obtained from waste stabilization ponds. The harvesting efficiency was evaluated using chlorophyll-a and turbidity, which reached removals of 99% and 95%, respectively, during a batch time of 140 min. Cell disruption was evaluated using lipid extraction, and the best results were achieved with a batch time of 140 min, which resulted in a 14% yield. Therefore, EFAC was shown to be an attractive potential technology for simultaneous microalgal harvesting and cell disruption.

Assessing the effects of operating parameters on flocculation of Chlorella vulgaris using bioflocculants extracted from miscellaneous waste biomass

2021 ◽  
Vol 287 ◽  
pp. 04004
Author(s):  
Zhi Min Ng ◽  
Uganeeswary Suparmaniam ◽  
Man Kee Lam ◽  
Jun Wei Lim ◽  
Siew Hoong Shuit ◽  
...  
Keyword(s):  
Chlorella Vulgaris ◽  
Biodiesel Production ◽  
Banana Peel ◽  
Peanut Shell ◽  
Waste Biomass ◽  
Microalgae Harvesting ◽  
Flocculation Efficiency ◽  
Harvesting Method ◽  
The Cost ◽  
Cockle Shell

Harvesting of microalgae is one of the main challenges in the production of biodiesel due to the small cell size of microalgae cells. Chemical flocculants have been generally used in the harvesting of microalgae, but they are harmful to the environment and relatively costly. Therefore, the utilization of waste biomass in producing bioflocculants is the current research niche to introduce environmental-friendly harvesting method and to minimize the cost of biodiesel production. Thus, in the current work, flocculation Chlorella vulgaris using mild acid-extracted bioflocculants from miscellaneous waste biomass (cockle shell, peanut shell and banana peel) were conducted by varying the pH values, the dosage of bioflocculants and temperatures. Cockle shell bioflocculant demonstrated the best flocculation performance, with highest flocculation efficiency of 85.2% compared to the peanut shell bioflocculant with flocculation efficiency of 37% and banana peel bioflocculant with flocculation efficiency of 16.3%. The optimum flocculation conditions for cockle shell bioflocculant were determined as follow: pH 9, bioflocculant dosage of 140mg/L and temperature of 30oC. The findings herein presented practical applicability of bioflocculants extracted from cockle shell for safe, rapid and inexpensive microalgae harvesting.

Biodiesel production from non-edible oils: A review

2020 ◽  
pp. 149-159
Author(s):  
Jatinder Kataria ◽  
Saroj Kumar Mohapatra ◽  
Amit Pal
Keyword(s):  
Environmental Impact ◽  
Energy Demand ◽  
Fossil Fuels ◽  
World Wide ◽  
Edible Oils ◽  
Control Measure ◽  
Biodiesel Production ◽  
Pollution Level ◽  
Animal Fats ◽  
The World

The limited fossil reserves, spiraling price and environmental impact due to usage of fossil fuels leads the world wide researchers’ interest in using alternative renewable and environment safe fuels that can meet the energy demand. Biodiesel is an emerging renewable alternative fuel to conventional diesel which can be produced from both edible and non-edible oils, animal fats, algae etc. The society is in dire need of using renewable fuels as an immediate control measure to mitigate the pollution level. In this work an attempt is made to review the requisite and access the capability of the biodiesel in improving the environmental degradation.

PENGARUH PELARUT KLOROFORM DALAM PEMURNIAN GLISEROL DENGAN PROSES ASIDIFIKASI ASAM KLORIDA

2016 ◽  
Vol 5 (3) ◽  
pp. 38-43
Author(s):  
Windi Monica Surbakti ◽  
Gerson Rico M.H ◽  
Mersi Suriani Sinaga
Keyword(s):  
Fatty Acid ◽  
Volume Ratio ◽  
Biodiesel Production ◽  
Extraction Time ◽  
Glycerol Concentration ◽  
Purification Process ◽  
Soap Content ◽  
Test Volume ◽  
Base Content ◽  
Water Salt

Glycerol as a byproduct of biodiesel production was approximately formed 10% of the biodiesel weight. Impurities which contained in the glycerol such as catalyst, soap, methanol, water, salt, and matter organic non glycerol (MONG) have a significant effect on the glycerol concentration. So, it is necessary to treat the impurities. The purpose of this study is to know the effect of chloroform to glycerol purification process with acidification method using hydrochloric acid as pretreatment process. This research was begun with acid addition to the glycerol to neutralize the base content and to split the soap content into free fatty acid and salt, that are more easily separated from glycerol. Then the process was continued with extraction by the solvent chloroform using the variable of test volume ratio (v/v) (1:1, 1:1.5, 1:2)  and the extraction time (20, 40, and 60 minutes). The results showed that the more volume of solvent used, gave less extraction time to produce high purity of glycerol. The highest purity produced in this study amounted to 90,9082% is obtained at the ratio of the volume solvent (v/v) 1:1 with extraction time 60 minutes.

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