Table 1 - uploaded by Ikrema Hassan
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In this study, heterogeneous soils contaminated with copper were remediated using solar powered electrokinetic
treatment. The heterogeneous soils were composed of clay and sand with ratio 2:1. In one soil, a sand layer was
sandwiched between two layers of clay while in another sand pockets made 1/3 of the soil mass. The third
heterogeneous soil...
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Citations
... Within this concept, the coupling of electrochemical technologies with renewable energies (REs) could turn these promising treatments into more environmentally friendly processes. It is worth mentioning that electrochemical technologies can be powered indistinctly by the grid or by renewable sources [25,26] and this later strategy makes them the perfect tandem to get a green remediation. It is worth mentioning that electrochemical technologies can be directly powered by solar panels (Off-grid installations) using direct current (DC) [27]. ...
In this work, the management of photovoltaic (PV) energy, assisted by a redox flow battery (RFB), for powering an electrochemical advanced oxidation process (EAOP), is evaluated. The storage of surplus energy allows to extend the treatment time overnight and to increase the environmental remediation efficiency during the whole electrochemical treatment. Nevertheless, this work points out that it is important to evaluate the most suitable powering strategy to take advantage of the total solar energy produced. The energy supplied by the PV panels to each system depends on the electrical features of the electrochemical devices (electrooxidation reactor and the RFB) and, especially, on the connection between them (series or parallel). A straightforward coupling (without a targeted regulation of the energy distributed between the EAOP and the RFB) brings out a time-depending and uncontrolled powering. This type of strategy opposes to the smarter regulation of the energy between the EAOP and the RFB by means of a targeted powering to each device. Results show higher remediation degrees when both electrochemical devices are directly coupled in parallel, regardless of the operational mode used (straightforward or targeted) due to lower current densities lead to higher global performances for both electrochemical devices. Nonetheless, it is important to note that the green targeted powering notices higher remediations than the straightforward coupling when the system operates under parallel connection and a RFB control. The low current densities supplied to the RFB point out higher capacities and, consequently, the remediation treatment is extended. Those results shed light on interesting conclusions in terms of green energy use. Furthermore, this software tool allows by means of a simple predictive modelling to optime the operational conditions of electrochemical treatments powered by renewable energies and assisted by energy storage systems.
... The solar-based EKR process that generates electric power by itself has attracted attention recently [11]. The electric energy generated by a solar-cell depended on the daylight, in other words, the electrical potential was influenced by the weather conditions and was an attractive energy source because it is a renewable energy source and is environmentally friendly [15][16][17][18]. Furthermore, the solar-cell generated DC power and was beneficial for the EKR process because it did not need to use an AC to DC power converter for application to the EKR process [11,18]. ...
