Production of biodiesel from waste vegetable oil using impregnated diatomite as heterogeneous catalyst

Edward Modiba; Christopher Enweremadu; Hilary Rutto

doi:10.1016/j.cjche.2014.10.017

Your Location：

Home >

Browse articles >

Production of biodiesel from waste vegetable oil using impregnated diatomite as heterogeneous catalyst

能源、资源与环境技术 | Updated：2026-01-06

- Production of biodiesel from waste vegetable oil using impregnated diatomite as heterogeneous catalyst
- Production of biodiesel from waste vegetable oil using impregnated diatomite as heterogeneous catalyst
- 中国化学工程学报（英文版） 2015年23卷第1期页码：281-289
- Affiliations：
  
  2 Department of Mechanical and Industrial Engineering, University of South Africa, UNISA Science Campus, Private Bag X6, Florida 1710, South Africa
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2014.10.017
  中图分类号：
- 纸质出版：2015
- Accepted：
Scan QR Code
Edward Modiba, Christopher Enweremadu, Hilary Rutto. Production of biodiesel from waste vegetable oil using impregnated diatomite as heterogeneous catalyst[J]. 中国化学工程学报（英文版）, 2015,23(1):281-289.

Edward Modiba, Christopher Enweremadu, Hilary Rutto. Production of biodiesel from waste vegetable oil using impregnated diatomite as heterogeneous catalyst[J]. Chin.J.Chem.Eng., 2015, 23(1): 281-289.
Edward Modiba, Christopher Enweremadu, Hilary Rutto. Production of biodiesel from waste vegetable oil using impregnated diatomite as heterogeneous catalyst[J]. 中国化学工程学报（英文版）, 2015,23(1):281-289. DOI： 10.1016/j.cjche.2014.10.017.

Edward Modiba, Christopher Enweremadu, Hilary Rutto. Production of biodiesel from waste vegetable oil using impregnated diatomite as heterogeneous catalyst[J]. Chin.J.Chem.Eng., 2015, 23(1): 281-289. DOI： 10.1016/j.cjche.2014.10.017.

摘要

Abstract

In this study

biodiesel was produced from waste vegetable oil using a heterogeneous base catalyst synthesized by impregnating potassium hydroxide (KOH) onto diatomite. Response surface methodology based on a central composite design was used to optimize four transesterification variables: temperature (30-120 ℃)

reaction time (2-6 h)

methanol to oil mass ratio (10%-50%) and catalyst to oil mass ratio (2.1%-7.9%). A quadratic polynomial equationwas obtained to correlate biodiesel yield to the transesterification variables. The diatomite-KOH catalyst was characterized using X-ray diffraction (XRD)

Fourier transform infra-red spectroscopy (FTIR) and a scanning electron microscope (SEM) equipped with an energy dispersive X-ray detector (EDS). A maximum biodiesel yield of 90%(by mass) was obtained. The reaction conditions were as follows: methanol to oil mass ratio 30%

catalyst to oil mass ratio 5%

reaction time 4 h

and reaction temperature 75 ℃. The XRD

FTIR and SEM (EDS) results confirm that the addition of KOH modifies the structure of diatomite. During impregnation and calcination of the diatomite catalyst the K

O phase forms in the diatomite structural matrix and the active basicity of this compound facilitates the

transesterification process. It is possible to recycle the diatomite-KOH catalyst up to three times. The crucial biodiesel properties fromwaste vegetable oil arewithin the American Standard Test Method specifications.

关键词

Keywords

references

浏览量

195

Downloads

CSCD

文章被引用时，请邮件提醒。

Submit

工具集

关联资源

Fe3O4 nanoparticles impregnated eggshell as a novel catalyst for enhanced biodiesel production

Co-production of biodiesel and methacrylated fatty acid through enzymatic catalysis with methyl methacrylate as acyl acceptor

Kinetics measurement of ethylene-carbonate synthesis via a fast transesterification by microreactors

Insights into biobased epoxidized fatty acid isobutyl esters from biodiesel: Preparation and application as plasticizer

A review of conventional and renewable biodiesel production