Progress of Cryogenics and Isotopes Separation

Newsflash

The National Conference with international participation on New Cryogenic and Isotope Technologies for Energy and Environment - EnergEn 2018 is organized by the National Research-Development Institute for Cryogenic and Isotopic Technologies - ICSI Rm. Valcea with the scientific participation of the University of Pitesti and the University of Craiova and will be held at Baile Govora, in 2018.
ENERGY POTENTIAL OF GEOTHERMAL GAS AND SEWAGE SLUDGE BIOGAS. A LABORATORY STAGE INVESTIGATION Print

 

ENERGY POTENTIAL OF GEOTHERMAL GAS AND SEWAGE SLUDGE BIOGAS. A LABORATORY STAGE INVESTIGATION


Felicia Bucura, Roxana Elena Ionete, Florian Marin, Marius Miricioiu, Gili Saros, Anca Zaharioiu, Marius Constantinescu*


National Research and Development Institute for Cryogenics and Isotopic Technologies – ICSI Rm. Valcea, Code 240050, Uzinei Street no. 4, P.O. Box Râureni 7, Valcea, Romania


ABSTRACT

A chromatographic investigation of the high-quality gas associated to geothermal water from Călimăneşti-Căciulata area, Vâlcea County (Romania) that highlighted an extremely rich content in various hydrocarbons was performed in this work. Therefore, were made a series of repeated samplings from all the exploited geothermal water wells in the area and an unexpected quantity/level of methane, around 75-80%vol was revealed. The gas concentration was dependent on the level of the gas/steam geothermal water collected in special cylinders. An interesting feature was given by the diversity and level of hydrocarbons encountered, from 0.7-1% volume C2, C3, iC4, nC4 to C6+ and aromatics in the geothermal gas. The same type of investigation was also carried out on the gas produced by the anaerobic digestion of the waste sewage sludge from a waste water treatment plant, to evaluate its capitalization potential as future energy source.

Keywords: gas chromatography, geothermal, sewage sludge, biogas, energy.


__________________________

*Corresponding authors: Marius Constantinescu, E-mail: Marius.Constantinescu@icsi.ro, Phone: 0250/732 744, Fax: 0250/732 746