Lestari, Anggun and Ginting, Simparmin and Saputra, Hens (2019) Effect of Seed Amounts on the Synthesis of Zeolite ZSM-5 Using Coal Bottom Ash and Rice Husk as Sources of Silica and Alumina by Using Seeding Method. Materials Science Forum, 948 (1). pp. 9-13. ISSN 1662-9752

Darmansyah, Darmansyah and Ginting, Simparmin and Ardiana, Lisa and Saputra, Hens (2016) Mesopori MCM-41 sebagai Adsorben: Kajian Kinetika dan Isotherm Adsorpsi Limbah Cair Tapioka. Jurnal Rekayasa Kimia dan Lingkungan, 11 (1). pp. 10-16. ISSN 2356-1661

Darmansyah, Darmansyah and Saputra, Hens and Ginting, Simparmin and Ardiana, Lisa (2016) SYNTHESIS AND CHARACTERIZATION OF MCM-41 FROM COAL FLY ASH FOR TAPIOCA WASTEWATER TREATMENT. ARPN Journal of Engineering and Applied Sciences, 11 (7). pp. 4772-4777. ISSN 1819-6608

Ginting, Simparmin and Khairat, Vastina B. and Febriantina, Nina and Saputra, Hens (2015) Reaction Kinetics of Acetic Acid and Ethanol Esterification Catalyzed by ZSM-5 Catalyst. UPT. Perpustakaan Universitas Lampung, Bandar Lampung. ISBN 978 - 602 - 73260 - 1 - 9

Darmansyah, Darmansyah and Ginting, Simparmin and Widiana, Derry and Saputra, Hens (2013) Sintesis H-ZSM-5 dari Zeolit Alam Lampung (ZAL) dengan Sumber Silika Penambah Bagasse Fly Ash (BFA) (Penentuan Rasio TPABr/SiO untuk Memperoleh Produk H-ZSM-5 yang memiliki Kristalinitas Optimum). PROSIDING SNTK TOPI 2013. pp. 273-283. ISSN 1907 - 0500