Study on the photo-Fenton degradation of polyvinyl alcohol in aqueous solution

Oxidation of polyvinyl alcohol by persulfate activated with heat, Fe2+, and zero-valent iron

“…Giroto et al [1] also showed that photo-Fenton degradation could mineralize PVA up to 90% under optimal conditions. However, to our knowledge, no attempt has been made to apply persulfate oxidation activated by heat and Fe 2+ .…”

“…Polyvinyl alcohol (PVA), a well known recalcitrant compound, is commonly used in the textile industry as a sizing agent and in the pharmaceutical industry as an ophthalmic lubricant [1]. PVA is also used in adhesives, paper-coating, emulsion paints, and detergentbased industries [2].…”

Adsorption equilibrium and kinetics of polyvinyl alcohol from aqueous solution on powdered activated carbon

“…Industrial wastewaters are more likely to contain recalcitrant contaminants that are toxic and hardly degradable by biological treatment processes. Polyvinyl alcohol (PVA), a well-known recalcitrant pollutant, is commonly used in textile industries as a sizing agent [1]. PVA, prepared by the hydrolysis of polyvinyl acetate is used in adhesive, paper-coating, emulsion paints and detergent based industries.…”

Degradation of polyvinyl alcohol in aqueous solutions using UV-365 nm/S2O8 2− process

“…Therefore, a considerable amount of scientific studies on the degradation of PVA has been carried out. Most of these studies have focused on electrocoagulation (Chou et al 2010), biodegradation (Solaro et al 2000), adsorption (Behera et al 2008), the Fenton process (Kang et al 2002), photo-Fenton oxidation (Giroto et al 2006), chemical oxidation (Won et al 2001), and photocatalytic degradation (Hsu et al 2011). These methods have certain drawbacks, including long operating time and high capital costs.…”