Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | Urban sewage scum and primary sludge as profitable sources of biodiesel and biolubricants of new generation |
| Abstract | Lipids of sewage scum and primary sludge taken from several wastewater treatment plants were quantified and characterised. In sewage scum, lipids represented 36-50% of total solids and were primarily composed of free fatty acids (45-60%) and calcium soaps (27-35%). In primary sludge, total lipids were 20-24% of total solids, and 71-82% of these were calcium soaps. Estolides and 10-hydroxystearic acid (prevalently present as R enantiomer, with an enantiomeric excess >92%) were also identified and quantified. A scheme of valorisation was then specifically designed and positively tested for both the sludge. Lipids were first recovered (92-99%), activated and finally reacted with methanol and AlCl?6HO (343 K, 2 h, yield >96%). Besides biodiesel, methyl estolides and methyl 10-hydroxystearate were efficiently isolated and purely separated in different fractions. A preliminary feasibility study was finally conducted and a possible integration of processes into a wastewater treatment plant was proposed and positively evaluated. |
| Source | Bioresource technology reports 9 |
| Keywords | (R)-10-hydroxystearic acidBiodieselBiolubricantsBiorefineryEstolidesSewage sludge |
| Journal | Bioresource technology reports |
| Editor | Elsevier, Oxford, Regno Unito |
| Year | 2020 |
| Type | Articolo in rivista |
| DOI | 10.1016/j.biteb.2020.100382 |
| Authors | di Bitonto, Luigi; Todisco, Stefano; Gallo, Vito; Pastore, Carlo |
| Text | 421013 2020 10.1016/j.biteb.2020.100382 Scopus 2 s2.0 85077987851 R 10 hydroxystearic acid Biodiesel Biolubricants Biorefinery Estolides Sewage sludge Urban sewage scum and primary sludge as profitable sources of biodiesel and biolubricants of new generation di Bitonto, Luigi; Todisco, Stefano; Gallo, Vito; Pastore, Carlo Istituto di Ricerca Sulle Acque, Bari; Politecnico di Bari Lipids of sewage scum and primary sludge taken from several wastewater treatment plants were quantified and characterised. In sewage scum, lipids represented 36 50% of total solids and were primarily composed of free fatty acids 45 60% and calcium soaps 27 35% . In primary sludge, total lipids were 20 24% of total solids, and 71 82% of these were calcium soaps. Estolides and 10 hydroxystearic acid prevalently present as R enantiomer, with an enantiomeric excess >92% were also identified and quantified. A scheme of valorisation was then specifically designed and positively tested for both the sludge. Lipids were first recovered 92 99% , activated and finally reacted with methanol and AlCl 6HO 343 K, 2 h, yield >96% . Besides biodiesel, methyl estolides and methyl 10 hydroxystearate were efficiently isolated and purely separated in different fractions. A preliminary feasibility study was finally conducted and a possible integration of processes into a wastewater treatment plant was proposed and positively evaluated. 9 Published version http //www.scopus.com/record/display.url eid=2 s2.0 85077987851 origin=inward Articolo in rivista Elsevier 2589 014X Bioresource technology reports Bioresource technology reports carlo.pastore PASTORE CARLO TA.P07.001.005 Recupero di risorse da rifiuti e biomasse |