L. M. SOUSA, M. C. FERREIRA, ANALYSIS OF THE OPERATION OF AN L-VALVE FEEDING DRY SPENT COFFEE GROUND, Blucher Chemical Engineering Proceedings, Volume 1, 2018, Pages 2981-2984, ISSN 23591757, http://dx.doi.org/10.5151/cobeq2018-PT.0790 (www.proceedings.blucher.com.br/article-details/analysis-of-the-operation-of-an-l-valve-feeding-dry-spent-coffee-ground-29145) Palavras-chave:: ;