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首页> 外文期刊>African Journal of Environmental Science and Technology >Transesterification of oil extracted from different species of algae for biodiesel production
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Transesterification of oil extracted from different species of algae for biodiesel production

机译：从不同藻类提取的油用于生物柴油生产的酯交换反应

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In the current study, biodiesel production efficiency ofChlorella vulgaris, Rhizoclonium hieroglyphicumandmixed algae culture was measured by transesterification process. Growth rate of algal species was measured on the basis of increase in their dry matter in various media. Protein, carbohydrates and lipids in all selected algae were measured on dry matter basis. Extracted oil was analyzed for water contents, iodine value, saponification value, acid number and fatty acid composition. Transesterification of algal oil was performed by using sodium methoxide as a catalyst. Yield of biodiesel from extracted oil was calculated forC. vulgaris(95%),R. hieroglyphicum(91%)andmixed algae culture(92%). Produced biodiesel was analyzed for kinematic viscosity (4.9, 5.0 and 4.7 mm2/s), flash point (160, 156 and 155°C), specific gravity (0.91, 0.914 and 0.912 g/ml), cetain number (51, 49 and 47 min), iodine value (47, 53 and 49 mg/g), acid number (0.49, 0.5 and 0.46 mg.KOH/g), carbon residue (0.01, 0.02 and 0.01 mass%), sulfated ash (0.007, 0.003 and 0.004 mass%), sulphur (0.013, 0.012 and 0.01 wt%) and water contents (15, 23 and 17 mg/kg) forC. vulgaris, R. hieroglyphicumandmixed algae culture, respectively.Properties of biodiesel were compared with ASTM standards and it was found with high quality biodiesel.
机译：在目前的研究中，通过酯交换反应法测定了小球藻，根瘤菌和混合藻培养物的生物柴油生产效率。根据各种介质中干物质的增加来测量藻类的生长速率。所有选定藻类中的蛋白质，碳水化合物和脂质均以干物质为基础进行测量。分析提取的油的水含量，碘值，皂化值，酸值和脂肪酸组成。使用甲醇钠作为催化剂进行藻油的酯交换反应。计算提取油中生物柴油的收率C。寻常（95％），R。象形文字（91％）和混合藻类培养（92％）。分析生产的生物柴油的运动粘度（4.9、5.0和4.7 mm2 / s），闪点（160、156和155°C），比重（0.91、0.914和0.912 g / ml），特定数字（51、49和47分钟），碘值（47、53和49 mg / g），酸值（0.49、0.5和0.46 mg.KOH / g），碳残留物（0.01、0.02和0.01质量％），硫酸盐灰分（0.007、0.003 C为0.004质量％），硫（0.013、0.012和0.01 wt％）和水含量（15、23和17 mg / kg）。将生物柴油的特性与ASTM标准进行比较，发现其具有高质量的生物柴油。

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