The efficiency of this conversion can be improved with the synergy of a co-reactant that has a higher (less negative) Gibbs free energy; CH\({}_{4}\) (\(\Delta\)G\({}^{\circ}\) = \(-\)50.7 kJ mol\({}^{-1}\)) and H\({}_{2}\) (\(\Delta\)G\({}^{\circ}\) = 0 kJ mol\({}^{-1}\)) are the candidates most commonly selected for this purpose [7]. [PERSON] et al. [8] studied the variation of CO\({}_{2}\) and CH\({}_{4}\) conversion with the CH\({}_{4}\)/CO\({}_{2}\) ratio using an atmospheric pressure DC corona discharge. A CO\({}_{2}\) conversion of 70% was found for a 2:1 ratio. A conversion factor approximating 90% was obtained by [PERSON] et al. [9] using an atmospheric pressure glow discharge plasma (APGD). In this case, the CH\({}_{4}\)/CO\({}_{2}\) ratio was 4:6. The proposed reactor presented the advantage of large scale treatment and high conversion ability. In addition, a toroidal transformer-coupled plasma (TCTP) source was used for CO\({}_{2}\) and CH\({}_{4}\) conversion by [PERSON] et al. [10]. Optical and mass spectrometric measurements of this source was performed. [PERSON] et al. [11] evaluated a dielectric packed-bed plasma reactor for CO\({}_{2}\) conversion. The authors showed that the dielectric properties and morphology of packing dielectric pellets notably influenced the electron energy distribution in the formed plasma discharge and the reactions inside the plasma reactor. The effects of the reverse reactions in the CO\({}_{2}\) decomposition and the oxidation of CO were examined. [PERSON] et al. [12] developed a plasma reactor for CO\({}_{2}\) reforming based on dielectric barrier discharge (DBD) with CH\({}_{4}\) and a catalyst. The influences of the different species formed inside the reactor on CO\({}_{2}\) reforming were studied. It was found that the catalyst could substantially improve reduction in CO\({}_{2}\) concentration. The conversion of CO\({}_{2}\) into more valuable chemical products using catalytic plasmas was studied experimentally by [PERSON] et al. [13]. Their results showed that the CO\({}_{2}\) plasma discharges could generate oxygen and other active plasma species for further reaction. In some cases, these reactions lead to the formation of more valuable chemicals such as ethylene, propylene and oxygenates. The experiments also confirmed that the CO\({}_{2}\) plasma was an excellent \"catalyst\" for the conversion of low alkanes to alkenes. This method was found to be an effective method for the utilization of CO\({}_{2}\) and low alkanes. This study aims to contribute to the development of new plasma technologies for CO\({}_{2}\) conversion. An AC parallel-plate plasma reactor (AC-PPP) for CO\({}_{2}\) remediation is presented that works at atmospheric pressure and uses alternating current (AC). This reactor has a very simple and low-cost design that can operate at atmospheric pressure, allowing straightforward scaling up for industrial applications. The new design is based on a high voltage (HV) discharge between two parallel electrodes where inlet and outlet metal pipes have been added. This makes it possible to extend the electromagnetic field inside these pipes and expand the treatment area, consequently increasing the conversion efficiency. A complete experimental and theoretical study of this new reactor was performed to determine its CO\({}_{2}\) remediation ability. The CO\({}_{2}\) conversion factor, CO and O\({}_{2}\) selectivity, and energy efficiency were determined by analyzing the exhaust gases using gas chromatography (GC). Optical emission spectroscopy confirmed the CO\({}_{2}\) decomposition in this reactor. The former species formed inside the discharge were detected. This technique also made it possible to determine the characteristic parameters of the plasma including electron density and rotational, vibrational, and excitation temperatures. In consequence, it was possible to determine if the plasma conditions were adequate for the application.