Low cost effective heterogeneous photo‐Fenton catalyst from drinking water treatment residuals for reactive blue 19 degradation: Preparation and characterization

Abstract

Four different catalysts from drinking water treatment residuals (DWTR) were prepared via impregnation in the iron nitrate, calcined at different temperatures ranged from 200°C to 500°C, and tested for the reactive blue 19 oxidation using the heterogeneous photo-Fenton, under UVA light source. XRD and XPS results revealed that iron nature was found under a ferric oxide form (Fe 3+ ) similar to the magnetite. Calcination temperature results showed a significant effect on the activity of the catalysts. RB19 and TOC removals were 99% and 79%, respectively, with the best catalyst that calcined at 500°C in optimal conditions as follows: initial pH solution = 3, 10 mM of H 2 O 2 dosage, 0.5 g/L of catalyst loading, reaction temperature 35°C, and I UVA = 3.55 MW/cm 2 for 50 mg/L of RB19. The reusability of the catalyst after three cycles showed complete removal of RB19 and 65% TOC removal. © 2021 Water Environment Federation • Practitioner points• Synthetized heterogeneous photo-Fenton catalyst from drinking water treatment residuals for the photo Fenton oxidation. • The calcination temperatures plays a crucial role in catalyst photocatalytic activity.• Degradation of reactive blue 19 with Fe/DWTR-500 in presence of H 2 O 2 .• The Fe/DWTR-500 catalyst exhibited the best photocatalytic activity.• Reusability studies of Fe/DWTR-500 and the kinetics of reactive blue 19 degradation were investigated.

A Cellulose‐Based Adsorbent using Box‐Behnken Design for the Adsorption of Reactive Blue 19 Dye from Simulated Wastewater

“…[11] In that context, various dye removal methods have been developed in the past to remove dyes from wastewater. Some of these physicochemical and biological methods used for dye remediation are electrochemical, [12] photo-Fenton catalysis, [13,14] ozone treatment, [15] UV photolysis, [16,17] photolytic membrane, [18] advanced oxidation, [19,20] and nanocomposite. [21][22][23] Unfortunately, all these treatment methods have certain limitations such as complex techniques, high operation costs, generation of sludge and toxic by-products, low flux, and high membrane fouling.…”

“…In that context, various dye removal methods have been developed in the past to remove dyes from wastewater. Some of these physicochemical and biological methods used for dye remediation are electrochemical, [12] photo‐Fenton catalysis, [13,14] ozone treatment, [15] UV photolysis, [16,17] photolytic membrane, [18] advanced oxidation, [19,20] and nanocomposite [21–23] …”

Application of modified water treatment residuals in water and wastewater treatment: A review

“…WTRs have been modified in a number of ways such as thermal modification and calcination [ [16] , [17] , [18] ], chemical modification with acid [ [19] , [20] , [21] , [22] ], surface modification with metals [ [23] , [24] , [25] , [26] ], and synthesis of composite sorbents made by amendment with waste products such as rice husk, wood mulches, scrap tire chips, fly-ash and shell materials [ [27] , [28] , [29] , [30] , [31] , [32] , [33] ]. These modifications result in favorable characteristics such as enhanced specific surface area and easy regeneration capacity.…”

Identifying optimized conditions for developing dewatered alum sludge-based photocatalyst to immobilize a wide range of dye contamination

“…Such radicals have the ability to oxidize nearly all organic molecules to non-toxic end products, carbon dioxide and water (Tony and Lin 2020b). Lately, in the last several decades, previous researchers (Chu 2001;Exley 2004;Grassi et al 2020;Laib et al 2021;Nguyen et al 2021;Yang et al 2021) proved the use of an aluminum-based Fenton reaction is a good candidate to substitute the classical Fenton's reaction catalyst to overcome the disadvantages of the Fenton reaction. Aluminum, Al, is well known as one of the most common metals in the earth's crust capable of forming a wide range of powerful complexes.…”

“…Also, various research dealt with land applications such as agriculture (Aamir et al 2019) and as a substrate in created wetland (Zhao et al 2011). Further, it could be reused as a coagulant (Mazari et al 2018), adsorbent material for eliminating organic pollutants (Tony 2020b(Tony , 2022 or heavy metal (Abo-El-Enein et al 2017) and as photo-catalyst (Laib et al 2021) in wastewater treatment. However, it is not applied so much as a source of solar/Fenton oxidation reaction.…”