Sanitary Ware Waste as a Source for a Valuable Biodiesel Catalyst

Table 10

Comparison of the results found in this study with those found in other recent publications.

Study	Used catalyst	Catalyst preparation	Reaction conditions				Biodiesel conversion	Reference
			Methanol/oil ratio	Catalyst loading	Reaction temperature	Reaction time
1	Eggshell- (solid waste-) derived CaO	Need	12 : 1	2.5 wt%	60°C	2 h	94%	[34]
2	Eggshell- (solid waste-) derived CaO	Need	7 : 1	6 wt%	60°C	2.2 h	91.4%	[42]
3	Eggshell- (solid waste-) derived CaO	Need	15 : 1	5 wt%	65 °C	2.2 h	92.8%	[43]
4	Cement dust (solid waste)	Do not need	15 : 1	2 wt%	65 °C	6 h	72%	[29]
5	CaO	Do not need	6 : 1	3 wt%	65 °C	1.25 h	100%	[44]
6	Horn shell- (solid waste-) derived CaO	Need	12 : 1	5 wt%	60°C	6 h	86.75%	[45]
7	CaO is derived from sanitary ware waste (solid waste)	Need	15 : 1	1 wt%	53.6 °C	2 h	93.4%	(present work)