Zn, Ni, Cr, Cu, Fe e S em Iodo de esgoto: comportamento químico, adsorção e proposta de tratamento

Thermal analysis and FTIR studies of sewage sludge produced in treatment plants. The case of sludge in the city of Uberlândia-MG, Brazil

“…Other absorption bands in the region from 3000 to 2800 cm −1 are attributed to the presence of hydrocarbon chains [9] present on the organic material of the sludge sample, as inferred by thermal analysis. Bands in 2963 cm −1 and 2920 cm −1 are attributed to the asymmetrical stretching of C-H bonds from mehyl and methylene groups, respectively.…”

“…There are several studies involving sewage sludge, as for example: the production of bio-oil from sewage sludge, co-incineration with coal for thermal drying, kinetic modeling of sewage sludge, characterization of pyrolysis products and investigation of its pyrolysis mechanism [5], as well as the application of frying processes for energy recovery in the incineration of sewage sludge [6,7], and the utilization of sludge in the biosorption of heavy metals [8] and in agriculture [9].…”

Bioleaching of toxic metals from sewage sludge by co-inoculation of Acidithiobacillus and the biosurfactant-producing yeast Meyerozyma guilliermondii

“…A broad band of approximately 3.500 cm À1 , characteristics for stretching hydroxyl (OH) groups of carboxylic acid, water, alcohols and/or phenols and amides and amines (N-H) were observed. It is known that hydroxylic and carboxylic groups can adsorb the metals, forming chelates that are considerably stable (Pinheiro, 2007).…”