Kinetic analysis and biodegradability of the Fenton mineralization of bisphenol A

Abstract

BACKGROUND: This work reports the kinetic and biodegradability analysis of bisphenol A (BPA) Fenton oxidation. An experimental study was carried out within the variables H 2 O 2 /Fe (II)/BPA in the range 10/3/1 to 50/3/1 and at temperatures of 25-70 ∘ C. Kinetics of the environmental parameters dissolved organic carbon (DOC) and chemical oxygen demand (COD) were analysed. RESULTS: The concentration of H 2 O 2 and the temperature have a strong influence on the kinetics of Fenton mineralization of BPA.Working at 70 ∘ C, the measured DOC values matched that calculated using the measured organic acids, which demonstrates that the oxidation reactions proceeded at a sufficient rate to form organic acids. Moreover, as BPA solutions are not easily biodegradable, the biodegradability of the solution during Fenton oxidation was studied by means of respirometry assays, evaluating the short-term biochemical oxygen demand (BOD st )/COD ratio. CONCLUSIONS: The kinetic models proposed are capable of predicting the rate of H 2 O 2 consumption and the oxidation of DOC and COD as a function of the temperature. Under the process conditions tested the treated effluents increased their biodegradability, facilitating compatibility with further biological treatment.

Removal of Bisphenol-A Endocrine Disruptor by Adsorption on Activated Carbon Derived from Waste Leathers

“…These studies show that this compound can increase the risk of cancer in specific ovarian, breast, and prostate cancers (Rochester J.R., 2013 et al,), as well as a variety of metabolic issues such as obesity, endometrial hyperplasia, recurrent miscarriages, and polycystic ovary syndrome (Di Donato et al, 2017). Other extraordinary issues related to bisphenol A publicity are cardiovascular disease, altered immune machine activity, diabetes in adults, infertility and precocious puberty (Rees- Clayton et al, 2011), Several technologies, such as coagulation, floculation, sedimentation, filtration (Joseph et al, 2012), carbon nanomaterials (CNMs) (e.g., carbon nanotubes (CNTs) (Joseph et al, 2011), and graphene oxides (GOs) For bisphenol A removal, membrane filtration, ultraviolet (UV) irradiation (Duan et al, 2017), organic methods (Wang G et al, 2006), and superior oxidation strategies (Rivas et al, 2008), (Rivero, et al, 2014), have been studied for bisphenol A removal. Therefore, effective, extra-sustainable techniques are sought to dispose of such contaminants from water and wastewater (Ioannou-Ttofa et al, 2016).…”

Advanced technologies for water treatment and reuse

“…Additionally, as biological treatment is much more cost effective than AOPs, the sequencing and combination of biological treatment and AOPs has been considered a good option for treatment . AOPs increase the biodegradability of WW effluents and also reduce the toxicity when the correct oxidant dose is applied.…”

Removal of Endocrine Disrupting Chemicals from Water: Adsorption of Bisphenol-A by Biobased Hydrophobic Functionalized Cellulose

“…Several technologies, such as coagulation/flocculation/sedimentation/filtration [ 17 , 18 ], carbon nanomaterials (CNMs) (e.g., carbon nanotubes (CNTs) [ 19 ] and graphene oxides (GOs) [ 20 ]), membrane filtration [ 21 , 22 ], ultraviolet (UV) irradiation [ 23 , 24 ], biological processes [ 25 , 26 ], and advanced oxidation techniques [ 27 , 28 , 29 , 30 , 31 ] have been studied for BPA removal. Nevertheless, energy consumption, low process efficiency, production of toxic by-products, and addition of hazardous chemicals prevent the wider application of all these technologies at large-scale.…”