Bardi Murachman
* Corresponding Author

Laboratory of Petroleum, Gas and Coal, Department of Chemical Engineering, Faculty of Engineering, Universitas Gadjah Mada, Jalan Grafika No.2, Yogyakarta 55281, Indonesia.

Sajono Sajono

Mechanical Engineering Department, Universitas Gadjah Mada, PT Data Reka Inertia, Jakarta.

Fauzan Afandi

Laboratory of Petroleum, Gas and Coal, Department of Chemical Engineering, Faculty of Engineering, Universitas Gadjah Mada, Jalan Grafika No.2, Yogyakarta 55281, Indonesia.

Johan Khaeri

Laboratory of Petroleum, Gas and Coal, Department of Chemical Engineering, Faculty of Engineering, Universitas Gadjah Mada, Jalan Grafika No.2, Yogyakarta 55281, Indonesia.