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3. Utilization of waste as biogas substrate by dominan microbes identified, The 4th International Seminar of Mathematic, Science and Computer Science Education. IOP Conf. Series: Journal of Physics: Conf. Series: 1013 (2018) 012211.

4. Circulation of Leachate Organic Solid Waste in Fixed Bed Reactor with Pressure Swing Absorption Technology, The 3rd International Conference Energy, Environment and Information System, 14th – 15th August 2018, Universitas Diponegoro, Semarang, Indonesia. Published online: 21 December 2018, DOI: https://doi.org/10.1051/e3sconf/20187305002.

5. Studi pengolahan kandungan ion logam (Fe, Mn, Cu, Zn) lindi sampah oleh zeolit.