Zahrim, A. Y., A. Nazimah, and S. Rosalam. 2014. “Lignin Removal From Aqueous Solution Using Calcium Lactate: The Effect Of Polymers And Magnesium Hydroxide As A Flocculant Aids”. ASEAN Journal of Chemical Engineering 14 (1), 25-36. https://journal.ugm.ac.id/v3/AJChE/article/view/8476.