id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
azojete-384	Orugba, H. O. ; Onukwuli, O. D. ; Babayemi, A. K. ; Umezuegbu, J. C. 	Five-Factor Response Surface Optimisation of Hydrochloric Acid Dissolution of Alumina from a Nigerian Clay	2020	12	.pdf	application/pdf	5493	201	48	As shown in the figure, increasing both the stirring speed and liquid/solid ratio increased alumina yield as the highest alumina yield was obtained at the highest stirring speed and highest liquid/solid ratio. In this research, using the experimental design, the combined effects of five independent variables (calcination temperature, leaching temperature, acid concentration, stirring speed and liquid/solid ratio) on the yield of alumina from the local clay was studied and the second order polynomial regression equation was developed to evaluate the influence of the five independent variables on alumina yield.	cache/azojete-384.pdf	txt/azojete-384.txt