Preparation and physicochemical properties of naturally grown green spirogyra algae biodiesel

IF 1 4区工程技术 Q4 CHEMISTRY, APPLIED

Chemical Industry & Chemical Engineering Quarterly Pub Date : 2022-01-01 DOI:10.2298/ciceq220215015k

Teku Kalyani, L. Prasad, Aditya Kolakoti

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引用次数: 3

Abstract

In this study, biodiesel was produced from a naturally grown green algae (spirogyra). The algae were cultivated in an open pond for 180 days without any fertilizers or nutrients. The dried algae powder to oil yield and significant fuel properties of viscosity, density, cetane number, calorific value, flash point, pour and cloud points are investigated for B10 to B100 blends. The results of solvent oil extraction show that at a 1:2 (algae powder to solvent) ratio and 65oC, algae oil yield was observed as 22.66%. Furthermore, Box-Behnken assisted response surface optimization technique was implemented. From the 29 random experiments, 96.24% spirogyra algae oil biodiesel (SAOBD) yield was achieved under the optimum conditions of 50oC, 180 minutes, the molar ratio of 9:1 and catalyst concentration of 0.5 wt%. The fatty acid composition (FAC) by gas chromatography reveals that 73.95 wt% saturated FAC was observed in SAOBD. The significant fuel properties are measured by following ASTM-D6751 standards and 40% SAOBD in diesel fuel could possibly be an optimum blend ratio for engine experimentation. Finally, regression equations with high correlation coefficients (R2) were developed for the fuel properties to predict the various blend ratios.

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自然生长绿色螺旋藻生物柴油的制备及其理化性质研究

在这项研究中，生物柴油是由一种自然生长的绿藻(螺旋藻)生产的。在不施用任何肥料或营养物的情况下，在露天池塘中培养藻类180天。研究了B10 ~ B100共混物的干藻粉制油率、粘度、密度、十六烷值、热值、闪点、倒点和浊点等重要燃料性能。溶剂提油结果表明，在1:2(藻粉与溶剂)比、65℃条件下，藻油得率为22.66%。在此基础上，实现Box-Behnken辅助响应面优化技术。29个随机实验结果表明，在50℃、180 min、摩尔比为9:1、催化剂浓度为0.5 wt%的条件下，螺藻油生物柴油(SAOBD)的产率为96.24%。气相色谱法测定脂肪酸组成(FAC)，饱和脂肪酸含量为73.95 wt%。根据ASTM-D6751标准测量了重要的燃料性能，发现40%的SAOBD可能是发动机试验的最佳混合比。最后，建立了具有高相关系数(R2)的燃料性能回归方程来预测不同的混合比。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Chemical Industry & Chemical Engineering Quarterly CHEMISTRY, APPLIED-ENGINEERING, CHEMICAL

CiteScore

2.10

自引率

0.00%

发文量

审稿时长

3.3 months

期刊介绍： The Journal invites contributions to the following two main areas: • Applied Chemistry dealing with the application of basic chemical sciences to industry • Chemical Engineering dealing with the chemical and biochemical conversion of raw materials into different products as well as the design and operation of plants and equipment. The Journal welcomes contributions focused on: Chemical and Biochemical Engineering [...] Process Systems Engineering[...] Environmental Chemical and Process Engineering[...] Materials Synthesis and Processing[...] Food and Bioproducts Processing[...] Process Technology[...]