| Title |
A circular economy use of waste drinking water treatment plant sludge for magnetic photocatalyst composite production into wastewater treatment |
| ID_Doc |
6024 |
| Authors |
Thabet, RH; Fouad, MK; El Sherbiny, SA; Tony, MA |
| Title |
A circular economy use of waste drinking water treatment plant sludge for magnetic photocatalyst composite production into wastewater treatment |
| Year |
2022 |
| Published |
|
| DOI |
10.1080/03067319.2022.2097009 |
| Abstract |
Environmental remedy calls for scientific contributions with ever increasing urgency. This research aims to a circular economy look to deliver the concept of novel materials, created from renewable by-product waste feedstock and designed to be reused, recycled, then the feedstock renewed through wastewater treatment process. The use of alum sludge (AS) waste as a photocatalyst in the catalytic oxidation of wastewater to the potential capability of OH radical use as a strong oxidant is explored. Investigation has performed using magnetite (M) augmented with alum sludge as a composite material formed as alum sludge/magnetite (ASM) at different proportions (1:1), (1:2), (1:3), (1:5) and (2:1) and the samples labelled as ASM-1, ASM-2, ASM-3, ASM-4 and ASM-5, respectively. The characterisation of such composite materials was explored by X-ray diffraction (XRD), Transmission electron Microscopy (TEM) and the composition of the composite material is attained by the Energy dispersive X-ray spectroscopy (EDX). The capabilities of these materials are tested for dye removal. Consequently, the corresponding photocatalytic performance was notably improved. The various operating conditions, initial dye concentration, initial pH value, catalyst and H2O2 concentrations on the oxidation efficiency of the dye were optimised at pH 2.0 and 800 mg/L and 2 g/L for H2O2 and ASM-1, respectively. Thermodynamic and kinetics were studies and the data revealed that the reaction is spontaneous and exothermic in nature and follows the first-order reaction kinetics. This assessment introduces the role of engineers and chemists in a world without waste. |
| Author Keywords |
Dyes; wastewater; alum sludge; magnetite; composite |
| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Science Citation Index Expanded (SCI-EXPANDED) |
| EID |
WOS:000823409800001 |
| WoS Category |
Chemistry, Analytical; Environmental Sciences |
| Research Area |
Chemistry; Environmental Sciences & Ecology |
| PDF |
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