| Title |
Environmental impact estimation of ceramic lightweight aggregates production starting from residues |
| ID_Doc |
20842 |
| Authors |
Barbieri, L; Bigi, A; Andreola, F; Lancelotti, I; Ghermandi, G; Palomino, MTC; García, CM |
| Title |
Environmental impact estimation of ceramic lightweight aggregates production starting from residues |
| Year |
2021 |
| Published |
International Journal Of Applied Ceramic Technology, 18, 2 |
| DOI |
10.1111/ijac.13665 |
| Abstract |
Within a circular economy approach, this study investigates the environmental impact of lightweight aggregates (LWAs) produced starting from different mixes of different clays with brewery sludge and cattle bone flour ash (CBA), used as poring and fertilizing agents, respectively. The environmental impact was evaluated by means of release tests, insulation capacity, carbon footprint (CFP), and particulate matter emission during pellet firing. Release tests representative of LWAs realistic application showed very high release of phosphate and satisfactory release of potassium. The thermal insulation of the LWAs was tested by thermal imaging camera and resulted highly variable depending on the composition, with the mix containing CBA performing best. This latter composition leads also to the smallest CO2 equivalent emission, due to the calorific power of CBA, allowing lower consumption of fossil fuels during the LWA production. Finally, total particulate emissions during the thermal treatment resulted similar in terms of mass for all mixes, while differences in terms of particle morphology and composition occurred. Samples containing residue resulted with a quite good release behavior, CFP, and insulation properties, but higher emission of particles, particularly when glass is added. |
| Author Keywords |
carbon footprint; circular economy; environmental impact; lightweight aggregates; residues |
| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Science Citation Index Expanded (SCI-EXPANDED) |
| EID |
WOS:000600670400001 |
| WoS Category |
Materials Science, Ceramics |
| Research Area |
Materials Science |
| PDF |
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