Abstract

This study was aimed to investigate the possibility of using iron slag by product as reactive materials in the porous reactive barriers technologies to achieve the principles of sustainability. Results reveal that the maximum adsorption capacity of iron slag (=2.309 mg/g) can be calculated by Langmuir model because it is more representative for adsorption data. This means that the chem-sorption is predominant mechanism for sorption of lead ions where the dissolution of calcium oxide by hydrolysis and ion exchange can enhance the removal of lead ions by iron oxide surface sites. In addition, the results of continuous tests conducted for 140 hours certified that the longevities of the barriers is proportional straightforwardly with the bed depth but it changed inversely with initial concentration of metal ions and flowrate. Hydraulic conductivity was recognized to remain approximately constant and this certify that there is no precipitation occurred through the removal process. The COMSOL software was proved its ability in the description of the measured breakthrough curves with high agreement.

Highlights

  • Industrial waste water causes a lot of damage to the environments and negatively affects peoples' health

  • The possibility of using iron slag byproduct resulted from steel-making process as reactive material for PRB will be the substantial point for the present study to specify its suitability to retard the migration of lead ions in groundwater

  • The adsorption isotherms are the essential prerequisites for the design of adsorption systems and they are depended on the equilibrium data

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Summary

Introduction

Industrial waste water causes a lot of damage to the environments and negatively affects peoples' health. Common technologies utilized for the treatment of groundwater have been ex situ pump and treat system This system drawn out ground water to the surfaces, treating it by varied method like adsorptions and either reintroduce the treated waters to the sub surfaces or discharging it to storms drains. The reactive material utilized as the cores elements in the PRB technologies are different and have developed across wide ranges bases on the variations of the targets contaminant and treatments mechanism This material should be available, financially effective, non hazardous material for ensuring that the ground water isn't contaminated secondly, they should keep their re-activity for longer periods, of homogeneous particles sizes for preventing clogging. The sizes of the particles of the irons slag were ranging from

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