BBR dye History of engineering & technology Mn-doped Fe/rGO nanocomposites TiO2 nanotubes UV-LED UV/chlorine advanced oxidation process activated carbon adsorption performance advace oxitadion processes (AOP) artificial intelligence biological processes borohydride reduction method bubble-particle wrap angle cationic pollutant chemical activation process cow manure cyanide degradation mechanism digestion efficiency digestion method electro-oxidation electrochemical processes electrolyzed water emerging contaminants ethyl violet ferrate ion floatability foodborne pathogens gradient boosted regression trees heating oxidation