ARTICLE INFO

ABSTRACT

Received date: 25/01/2016

Accepted date: 08/07/2016

This research focuses on development of a purification method for biogas - a potential sustainable fuel using Zn- exchanged zeolites. Different with traditional hydrothermal synthesis, the zeolite in this study has been synthesized via a microwave-assisted method in order to shorten the crystallization time. Various techniques were utilized for characterization of the adsorbents. The crystalline structure of the materials was analyzed by XRD (X-ray Diffraction). Scanning Electron Microscopy (SEM) was applied for morphology analysis. The H₂S adsorption activity of the material was determined by a fixed-bed absorption column and the expressed by the H₂S absorption capacity below a specified breakthrough point (50 ppm). H₂S adsorption capacity of about 13 mgS/g was achieved. It was observed that although high concentration of CO₂ was presented in the feed stream, the Zn-exchanged zeolite can selectively remove H₂S in the gas mixture.

KEYWORDS

Biogas, H₂S, Zeolite X, microwave-assisted method, selective adsorption

Cited as: Binh, H.T.T. and Long, N.Q., 2016. Selective adsorption of H₂S in biogas using zeolite prepared by microwave-assisted method. Can Tho University Journal of Science. Special issue: Renewable Energy: 52-56.