Synthesis of composite sorbent for the treatment of aqueous solutions contaminated with methylene blue dye

Abstract

<jats:title>Abstract</jats:title> <jats:p>To apply the principles of sustainability, this study aims to prepare the composite sorbent from mixing of solid wastes that resulted from activities of treatment plants for wastewater and water supply. The manufacturing process depends on the mixing of sewage sludge with waterworks sludge at different proportions and the best mixture is modified by ferric nitrate solution. The prepared composite sorbent was evaluated as permeable reactive barrier (PRB) in the capturing of methylene blue (MB) dye presented in the simulated groundwater. Results proved that the suitable mixture of composite sorbent consisting of 0.25 g sewage sludge with 0.75 g waterworks sludge coated with aqueous solution of 2 g of Fe(NO3)2 achieved the maximum sorption capacity. In comparison with Freundlich model, Langmuir expression described the sorption measurements in a well manner; so, the chemisorption is governed by the removal of MB with maximum adsorption capacity reached to 268.98 mg/g. Kinetic measurements could be more representative by pseudo-first-order model and this means that the sorption process is supported by physical forces. Finally, the effects of inlet concentrations and bed thickness on the migration of MB front were simulated in an efficient manner by COMSOL Multiphysics 3.5a package with root mean squared errors not in excess of 0.152.</jats:p>

Funnel and Gate Permeable Reactive Barrier Configuration for Contaminated Groundwater Remediation – Designing, Installation, and Modeling: A Review

“…It also justifies why adsorbed chemical species on unoccupied sites do not interact. The Langmuir model is used to determine the greatest sorption capacity (qmax, mg/g) of sorbent [89]. ))…”

Controlling metal ion migration in contaminated groundwater with Iraqi clay barriers for water resource protection

“…The results indicated that the most effective conguration to safeguard a particular location is to surround it on three sides opposing the ow direction compared to a continuous barrier. 22 The use of commercial sorbents, 9,[23][24][25][26] industrial wastes resulted as byproducts from various industries, [27][28][29] or manufacturing new valuable sorbents from these wastes [30][31][32] for elimination of chemicals from contaminated water is a crucial eld that has studied recently. This study aims to utilize clay, an abundant and cost-effective material in the Iraqi environment, as an LPB to control the migration of lead and nickel ions through groundwater and protect water resources.…”

Precipitation of (Mg/Fe-CTAB) - Layered double hydroxide nanoparticles onto sewage sludge for producing novel sorbent to remove Congo red and methylene blue dyes from aqueous environment

“…The high cost of AC and the difficulties of its regeneration may be represented the main causes for limiting the utilization of this sorbent. Thus, new direction in the scientific researches was developed for finding the effective low-cost reactive materials to be the alternatives for activated carbon like dead macro fungi, walnut shells, olives pips, fruit barks, wastes of coconut, activated sludge and other bio-materials (Al Juboury et al, 2020;Özacar and S ¸engil, 2005).…”