Mathematical Modelling for Predicting Pollutant Removal Efficiencies of an Electrolysis System
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Mathematical Modelling for Predicting Pollutant Removal Efficiencies of an Electrolysis System Monzur A. Imteaz & Amimul Ahsan & Parminder Kaur & Abdallah Shanableh
Received: 26 April 2020 / Accepted: 5 August 2020 # Springer Nature Switzerland AG 2020
Abstract Electrolysis systems have been widely investigated for treating wastewater in laboratory-scale experiments, and most researchers reported efficient treatment outcomes. However, industrial scale implementation often necessitates assessing and prioritising various options involving different combinations of input parameters, which often requires mathematical models. This study presents mathematical models for predicting removal efficiencies of four different pollutants using electrolysis. Parametric equations were developed based on experimental results conducted in a previous study. Proposed equations are dependent on treatment M. A. Imteaz (*) : A. Ahsan Department of Civil and Construction Engineering, Swinburne University of Technology, Melbourne, Australia e-mail: [email protected]
A. Ahsan e-mail: [email protected] A. Ahsan Department of Civil Engineering, Uttara University, Dhaka, Bangladesh P. Kaur Department of Separation Science, Lappeenranta-Lahti University of Technology, Lappeenranta, Finland e-mail: [email protected] A. Shanableh Department of Civil and Environmental Engineering, University of Sharjah, Sharjah, UAE e-mail: [email protected]
retention time and current intensity (voltage). Results revealed that the experimental data followed consistent patterns, which lead to the derivations of generalised equations which were able to closely predict pollutants’ removal efficiencies obtained through experimental measurement. The developed equations also confirmed that beyond an optimum voltage, a further increase in voltage does not render higher removals of the pollutants, which is essential for enhancing the feasibility of industrial scale applications. Keywords Electrolysis . Mathematical models . Removal efficiency . Pollutants . BOD . COD . TSS . TDS
1 Introduction Ever-increasing population and subsequent increase in consumptions cause generation of huge quantity of wastewater from different sources including domestic, commercial and industrial. Treatment and disposal of huge quantity of wastewater being generated are burdens for the urban authorities. Several technologies are available to treat the wastewater: chemical precipitation, filtration, microwave irradiation and air stripping. Some of these methods need expensive equipment, which makes the processes less feasible (Bonmatí and Flotats 2003). Another commonly used technique of wastewater treatment is electrolysis, which uses electrical energy to accelerate chemical separation, and if renewable energy sources are used for electrolysis, this method will
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have very minimum environmental impacts (Zoulias et al. 2004). Electrolysis normally does require neither expensive equipment nor any special chemicals. Moreover, this method produces very less slu
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