Article ID Journal Published Year Pages File Type
7843788 Journal of Molecular Liquids 2017 38 Pages PDF
Abstract
Global fresh water demand increases as population increases. Thus, the demand for cost-effective materials and efficient technologies for water treatment is on the rise. Here, we modified rubber-derived carbon by iron oxide and then the obtained material was subjected to surface modification using typical branched polyethylenimine (BPEI) to produce a magnetic composite of AC-FexOy-BPEI. The composite was characterized. The efficiency of the polymer anchored material was examined for methyl red (MR) removal from aqueous media in the batch and column systems. The results indicated a high percentage of removal (≈ 100%) and eequilibrium was observed in 10 mins. The process followed models of the Langmuir isotherm and Pseudo-second order, with a capacity of 526 mg/g. The negative standard enthalpy change (∆ Ho) suggests that the adsorption of MR on the material is exothermic. The breakthrough was observed after 150 mins using a 1 mM concentration of methyl red flow through a designed short column. The AC-FexOy-BPEI demonstrated remarkable efficiency in removing MR from aqueous solutions. The high adsorption capacity does indeed make the amine-modified material as an effective sorbent. The material leverages its cost-effective source, in addition to the ease of preparation along with its fast uptake capacities, it offers great promise for wastewater remediation.
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Physical Sciences and Engineering Chemistry Physical and Theoretical Chemistry
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