id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
cet-14465		cet-14465		6	.pdf	application/pdf	3256	167	45	To assess the potential for using sewage sludge as an energy source, various analyses were carried out for its characterization, such as proximate and ultimate analysis, calorific value determination, granulometric analysis, and surface adhesion tension. According to Menezes (2022), sewage sludge is an unavoidably generated residue during various stages of sewage treatment, including the preliminary stage (removal of some solid by-products from sewage), primary stage (removal of sedimentable and floating solids through physical processes), secondary stage (removal of organic matter and some nutrients through biological processes), and tertiary stage (removal of specific contaminants through physicochemical processes).	cache/cet-14465.pdf	txt/cet-14465.txt