Use of cement kiln dust to remove copper from simulated wastewater using the Response surface methodology

Hanan A Ibraheem,Husham M.Al Tameemi

doi:10.30772/qjes.v13i3.706

Hanan A Ibraheem, Husham M.Al Tameemi

Open Access

https://doi.org/10.30772/qjes.v13i3.706

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Abstract

Copper removal from simulated wastewater was achieved using Cement Kiln Dust (CKD) as adsorbent. The effects of contact time, pH, initial copper ion concentration, rotational speed, and Cement Kiln Dust (CKD) amount were studied. The best operating conditions were determined by applying a Response Surface Methodology (RSM). The results showed that the copper concentration has the main effect on the efficiency of copper removal followed by time, shaking rate, dosage of cement kiln dust, and pH. The best operating conditions were found to have a pH value of 8, contact time 90 minutes, shaking rate of 300 rpm, copper ion concentration 20 ppm, and a quantity of CKD equivalent to 35 g / l. Based on this optimum condition, 99 % of the efficiency of copper removal was achieved.

Highlights

Due to the increase in human activities represented by factories, mining operations, and household needs, there is a growing demand for water usage and, at the same time, there has been an increase in the output of wastewater in general, especially industrial wastewater resulting from the production processes
Initial copper ion concentration (X1) Cement Kiln Dust (CKD) dosage (g/l) (X2), shaking rate (X3), pH value(X4), and contact time (X5) were taken as process variables, while the efficiency of copper removal was taken as a response
It has been demonstrated that the removal of copper from a simulated solution of wastewater can be successfully performed using CKD as an absorbent material

Summary

Introduction

Due to the increase in human activities represented by factories, mining operations, and household needs, there is a growing demand for water usage and, at the same time, there has been an increase in the output of wastewater in general, especially industrial wastewater resulting from the production processes. This water is charged with many pollutants, in particular pollutants represented by inorganic materials with heavy metals such as copper. It is used in many processes, including soil stabilization Rahman et al [11], the production of fertilizers and building materials, and as an absorbent [1215]

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