Cement kiln dust-sand permeable reactive barrier for remediation of groundwater contaminated with dissolved benzene
Ayad A.H. Faisal, Hadeel Kareem Jasim, Laith A. Naji, Mu. Naushad, Tansir Ahamad
Abstract
The interaction of cement kiln dust and simulated acidic groundwater (pH = 3) contaminated with benzene were studied. FTIR results showed that cation−π and H-bonding interactions had a major role in the removal process. The concentration of benzene in the effluent water and hydraulic conductivity of the continuous experiments was used to evaluate the performance of permeable reactive barrier for 60 days. The increase of CKD improves the performance of the bed with efficiency ranged from 40% to 90%, but clear decrease in the hydraulic conductivity was observed due to the accumulation of the benzene in the beginning of the barrier.
Topics & Concepts
ChemistryBenzeneEnvironmental remediationHydraulic conductivityPermeable reactive barrierGroundwaterCement kilnEffluentGroundwater remediationEnvironmental chemistryCementContaminationChemical engineeringEnvironmental engineeringComposite materialEnvironmental scienceSoil waterOrganic chemistryGeotechnical engineeringSoil scienceGeologyMaterials scienceBiologyEngineeringEcologyAdsorption and biosorption for pollutant removalEnvironmental remediation with nanomaterialsWater Treatment and Disinfection