Nandini, Atika, and Luluk Edahwati. “Study of The Mass Transfer Coefficient from Lignin Removal Process of Coffee Husk in a Baffled Reactor”. Innovative: Journal Of Social Science Research, vol. 4, no. 6, Dec. 2024, pp. 8709-16, doi:10.31004/innovative.v4i6.17104.