Biological Fenton’s Oxidation of Pentachlorophenol by Aquatic Plants

Abstract

This study proposes a new treatment method to decompose persistent chemicals such as pentachlorophenol (PCP) in water, utilizing hydrogen peroxide present in aquatic plants to proceed the biological Fenton reaction. PCP was not effectively removed by aquatic plants. However, by adding 2.8 mM of Fe(2+), there was a rapid removal of PCP while at the same time consumption of endogenous hydrogen peroxide occurred. It was observed the increase of chloride ions formation in water-confirming the complete degradation of PCP. These results demonstrated that PCP was oxidized through a biological Fenton reaction, and hydrogen peroxide in aquatic plants was a key endogenous substance in treatment of refractory toxic pollutants.

Renewable Material-derived Biochars for the Efficient Removal of 2,4-Dichlorophen from Aqueous Solution: Adsorption/Desorption Mechanisms

“…Due to its toxic effects, which harm public health and the environment, various technologies have been reported for the degradation of chlorophenols in soil or removal from the effluent, such as adsorption (Devi and Saroha 2014), membrane filtration (Du et al 2013), and bioremediation (Dos Reis et al 2013). Among the remediation technologies, adsorption is an efficient, cost-effective, and simple process for the removal of the organic pollutants from the wastewater (Devi and Saroha 2014).…”