N SITUTREATMENTOF CR+3ONTO ZERO-VALENT IRONFROM WASTEWATER BY PERMEABLEPACKED COLUMN FILTER

Saad Alhares, Hasanain

	N SITUTREATMENTOF CR+3ONTO ZERO-VALENT IRONFROM WASTEWATER BY PERMEABLEPACKED COLUMN FILTER
AL-TAQANI
Article 1, Volume 30, Issue 1, 2017, Pages 0-0
Author
Hasanain saad Alhares
Abstract
The present study was conducted for Cr+3removal which is one of the most toxicwastewaterpollutants onto zero-valent iron.In this system, the toxins are removed from in situ site by anarrival of the wastewater through a permeable sorbentpacked columns filter occupied with a special sorbentsolid.However, the filter resources should be carefully chosen. A chain of batch tests were handled with synthetic wastewater.The contact time mixing ofsorbate and sorbent (0-240) min, initialCr+3 concentration (50-250) mg/L, pH(3-6), zero-valent iron dosage (10-100) g/ L, and achieve the speed of agitation (50-250) rpm, have been studied the effect of these parameters in batch tests and theoutcomesdisplayed that the optimum values for the efficiencyof removal of Cr+3 (=93%) were 90 min, 50 mg/L,4, 50 g/L and 200 rpm respectively.As well as the results showed that the model Langmuir in representation of adsorption data is the best fitting compared with model of Freundlich under the same circumstances. Mathematical model which is established on ''finite element''technique was handled to simulate the carrying of Cr+3 under equilibrium situation. The data based on predicted andexperimental showedthatthepermeablesorbent filter acting the role of potential in the limitation of the sorbate plume movement and a respectable matching between these data wereobtained with RMSE''root mean squared error'' no more than 0.152.
Keywords
zero; valentiron; Permeable sorbentfilter; wastewater; packed column

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