Chemical compositions and methods of using same for remediating sulfur-containing compositions and other contaminants in fluids

A treatment process for removing and/or remediating targeted contaminants in a contaminated gas, wherein the targeted contaminants are selected from a group consisting of H2S, mercaptans, thiophenes, benzene, toluene, ethylbenzene, xylenes, CO2, SO2, metals, and salts, comprising 3 steps of:

• providing a volume of a treatment composition in a reaction chamber such that there is a head space above the treatment composition in the reaction chamber;
• bubbling or otherwise passing a flow of the contaminated gas through the treatment composition in the reaction chamber and into the head space to cause targeted contaminants in the contaminated gas to be remediated until the pH of the treatment composition drops to between 10 and 9;
• discharging the treatment composition from the reaction chamber;
• and repeating these steps wherein the treatment composition comprises a hydrocarbon based liquid;
• and at least one hydroxide compound dispersed or dissolved into the hydrocarbon based liquid, wherein the at least one hydroxide compound dispersed or dissolved into the hydrocarbon based liquid constitutes 30-50 wt. % of the treatment composition, the at least one hydroxide compound includes at least one of potassium hydroxide and sodium hydroxide, and a pH of the treatment composition is in a range of 13-14.0.