Use of glycerol by-product of biodiesel to produce an efficient dust suppressant

被引：85
|
作者：
Medeiros, Miguel A. [1 ]
Leite, Carla M. M. [2 ]
Lago, Rochel M. [2 ]
机构：
[1] Univ Fed Tocantins, Dept Ciencias Biol, BR-77500000 Porto Nacl, TO, Brazil
[2] Univ Fed Minas Gerais, Dept Quim, Inst Ciencias Exatas, BR-31270901 Belo Horizonte, MG, Brazil
来源：
CHEMICAL ENGINEERING JOURNAL | 2012年 / 180卷
关键词：
Glycerol; Biodiesel; Polymerization; Dust suppressor; Environment; MESOPOROUS CATALYSTS; OLIGOMERIZATION; ETHERIFICATION;
D O I：
10.1016/j.cej.2011.11.056
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
In this work, glycerol oligomerization to produce dust suppressants in the presence of acids (H2SO4 or H2SO4) and basic (NaOH) catalysts was investigated. The obtained results showed that kind of catalyst and its concentration are critical to obtain good yield for olygomers, as verified by Thermogravimetric Analysis. Under optimized condition it was possible to obtain reaction solutions with viscosity greater than 160 times that of glycerol and good suppressive action of dust, with only molar rate of 3% H2SO4, 140 degrees C/1 h. Since using crude glycerol derived from biodiesel production and 380 degrees C, was obtained hexa and heptaglycerol, in 3 h (verified by ESI-MS). Tests for dust suppression performance with the product derived from crude glycerol showed higher efficiency of material, when compared to products of oligomerization of glycerol and a commercial product. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：364 / 369
页数：6
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