ROSLIANA LUBIS Department of Sains dan Teknologi, Universitas Medan Area, Sumatera Utara Indonesia
RIYANTO RIYANTO Department of Sains dan Teknologi, Universitas Medan Area, Sumatera Utara Indonesia
SAISA SAISA https://orcid.org/0000-0002-5333-7251 Department of Chemical Engineering, Faculty of Engineering, Universitas Serambi Mekkah Indonesia