Jump to main content
Jump to site search

Issue 19, 2020
Previous Article Next Article

Mobility and adsorption of liquid organic hydrogen carriers (LOHCs) in soils – environmental hazard perspective

Author affiliations

Abstract

Liquid organic hydrogen carriers (LOHCs) are an energy system that can be used to store and transport hydrogen under standard temperature and pressure chemically bound to a carrier. The LOHC systems show advantages over conventional energy systems (recyclability, higher sustainability and lower emissions) and other hydrogen-based systems (lower loses, ease of handling and higher safety), and are applied in stationary and mobile applications worldwide. The scale and type of use indicate that the release of LOHCs to the environment can be expected. Yet, their behaviour and fate have not been investigated especially with regard to assessment of exposure, mobility and possibility to reach surface water, groundwater or drinking water sources. To investigate that we studied the mobility of thirteen technologically promising LOHC candidates including indole, quinaldine, carbazole derivatives, benzyltoluene and dibenzyltoluene, and their (partially) saturated forms in soil, for the first time. The substances were classified into mobility classes based on their organic carbon–water partition coefficients (Koc) determined via in silico models and HPLC screening. The log Koc values increased in the order indoles < quinaldines < carbazole derivatives < benzyltoluenes < dibenzyltoluenes covering a full spectrum of mobility scale (from highly mobile to immobile). The behaviour of exemplary LOHC system – quinaldine including H2-unsaturated, partially and fully saturated forms – was further assessed by investigating the soil-water partition coefficients (Kd) via adsorption batch equilibrium and column leaching test. The study showed that some LOHCs can be expected to be very mobile in soils and have the potential to reach groundwater.

Graphical abstract: Mobility and adsorption of liquid organic hydrogen carriers (LOHCs) in soils – environmental hazard perspective

Back to tab navigation

Supplementary files

Article information


Submitted
29 Jul 2020
Accepted
16 Sep 2020
First published
17 Sep 2020

This article is Open Access

Green Chem., 2020,22, 6519-6530
Article type
Paper

Mobility and adsorption of liquid organic hydrogen carriers (LOHCs) in soils – environmental hazard perspective

Y. Zhang, S. Stolte, G. Alptekin, A. Rother, M. Diedenhofen, J. Filser and M. Markiewicz, Green Chem., 2020, 22, 6519
DOI: 10.1039/D0GC02603D

This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. Material from this article can be used in other publications provided that the correct acknowledgement is given with the reproduced material and it is not used for commercial purposes.

Reproduced material should be attributed as follows:

  • For reproduction of material from NJC:
    [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the Centre National de la Recherche Scientifique (CNRS) and the RSC.
  • For reproduction of material from PCCP:
    [Original citation] - Published by the PCCP Owner Societies.
  • For reproduction of material from PPS:
    [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the European Society for Photobiology, the European Photochemistry Association, and RSC.
  • For reproduction of material from all other RSC journals:
    [Original citation] - Published by The Royal Society of Chemistry.

Information about reproducing material from RSC articles with different licences is available on our Permission Requests page.


Social activity

Search articles by author

Spotlight

Advertisements