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首页> 美国卫生研究院文献>Bioengineering >Purification and Valorization of Waste Cotton Seed Oil as an Alternative Feedstock for Biodiesel Production
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Purification and Valorization of Waste Cotton Seed Oil as an Alternative Feedstock for Biodiesel Production

机译：废棉籽油作为生物柴油生产的替代原料的纯化和均价化

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This article is focused on the production of biodiesel from the waste cotton seed oil (WCSO), after purification, as an alternative to fossil fuels. Waste oil was collected from Sodecoton, a factory producing cotton seed oil in the Far North Cameroon. The WCSO was subjected to purification using activated coal, followed by transesterification under basic conditions (potassium hydroxide (KOH)), using methanol and ethanol. Some physico–chemical properties of biodiesel, such as absorbance of waste and purified oil, density, viscosity, water content, acid value, and its energy content were determined. The result of treating the WCSO with activated coal indicated that purification efficiency of activated coal increased with the contact time and the mass of the absorbent. Absorbance results directly proved that activated coal removed unwanted components. In the same way, activated coal concentration and exposure time influenced the level of free fatty acids of WCSO. The yield of methyl ester was 97%, while that of ethyl ester was 98%. The specific gravity at 25 °C was 0.945 ± 0.0601. An evaluation of the lower calorific value (PCI) was done in order to study the energy content of biodiesel. This was found to be a value of 37.02 ± 3.05 MJ/kg for methyl ester and 36.92 ± 7.20 MJ/kg for ethyl ester. WCSO constitutes feedstock for high volume, good quality, and sustainable production of biodiesel, as well as a realistic means of eliminating the pollution resulting from the indiscriminate disposal of waste oils from both household and industrial users.
机译：本文的重点是纯化后由废棉籽油（WCSO）生产生物柴油，作为化石燃料的替代品。废油是从Sodecoton（一家在喀麦隆远北地区生产棉籽油的工厂）收集的。使用活性炭对WCSO进行纯化，然后在碱性条件下（氢氧化钾（KOH））使用甲醇和乙醇进行酯交换反应。确定了生物柴油的一些理化特性，例如废物和纯油的吸收率，密度，粘度，水含量，酸值及其能量含量。用活性炭处理WCSO的结果表明，活性炭的净化效率随着接触时间和吸收剂的质量而增加。吸光度结果直接证明了活性炭去除了不需要的成分。同样，活性炭的浓度和暴露时间也会影响WCSO的游离脂肪酸水平。甲酯的产率为97％，而乙酯的产率为98％。 25℃下的比重为0.945±0.0601。为了研究生物柴油的能量含量，对低热值（PCI）进行了评估。发现甲酯的值为37.02±3.05 MJ / kg，乙酯的值为36.92±7.20 MJ / kg。 WCSO构成了高产量，高质量和可持续生产生物柴油的原料，同时也是消除因家庭和工业用户随意处置废油而造成的污染的现实方法。

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