Open AccessConcept for energy harvesting from the salinity gradient on the basis of geothermal water
Author(s) -
Marek Bryjak,
Nalan Kabay,
Enver Güler,
Barbara Tomaszewska
Publication year - 2018
Publication title -
weentech proceedings in energy
Language(s) - English
Resource type - Journals
ISSN - 2059-2353
DOI - 10.32438/wpe.6118
Subject(s) - geothermal gradient , renewable energy , geothermal energy , geothermal desalination , environmental science , reversed electrodialysis , brine , saline water , environmental engineering , hydroelectricity , electricity generation , geothermal heating , greenhouse , geothermal power , salinity , desalination , energy source , geology , engineering , chemistry , power (physics) , membrane , geophysics , oceanography , biology , quantum mechanics , horticulture , physics , electrical engineering , biochemistry , organic chemistry
The use of renewable energy resource is usually directed to solar, wind or hydroelectric stations. However, there are other sources for getting the ‘green energy’. One of them is geothermal source, the energy stored in the underground fluids. In the world, geothermal water is used mostly for heating purposes, greenhouses, agriculture, for generation of warm water, therapeutic and recreational purposes and to generate electricity in power stations. After these uses, geothermal water is usually seen as waste water. This research presents the idea for innovative energy harvesting from the salinity gradient on the basis of waste geothermal water. Two methods are analyzed to be used: capacitive mixing (CAPMIX) and reverse electrodialysis (RED). The aim of the research concept is analysis for testing the applicability of both methods in energy harvesting from mixing of saline geothermal water and RO brine with water, before its re-injection to underground reservoirs.