Statistical Analysis of Anode Efficiency in Electrochemical Treatment of Wastewater and Sludge
- PDF / 1,288,663 Bytes
- 24 Pages / 439.37 x 666.142 pts Page_size
- 59 Downloads / 180 Views
Statistical Analysis of Anode Efficiency in Electrochemical Treatment of Wastewater and Sludge Jannatul Rumky 1
2
& Walter Z. Tang & Mika Sillanpää
3,4,5
Received: 23 November 2019 / Accepted: 23 July 2020/ # The Author(s) 2020
Abstract
Electrochemical processes have proven their potential as effective technologies to treat wastewater from industrial, urban and agricultural activities, and thus, contribute towards a cleaner environment. In this study, we aimed to assess the effectiveness of the leading electrochemical technologies, such as electro-oxidation, electrochemical coagulation and electrochemical advanced oxidation processes (EAOPs), statistically for different types of anodes for the removal of various pollutants from wastewater along with their treatment efficiency. Anode is considered as a source of electron and an essential part of electrochemical processes. So, we have evaluated the relationship between different anode features such as anodic material, surface area versus removal of chemical oxygen demand (COD), dissolved organic carbon (DOC) and colour in various wastewater treatment plants (WWTPs) by IBM SPSS Statistics 26. Apart from that, various process characteristics such as inter-electrode distance, system pH, reactor volume, current density and voltage were also considered in this investigation. From the regression analysis of the electrochemical coagulation system, it was found that the removal efficiency of pollutants is enhanced by the surface area of the electrodes along with the inter-electrode distance. Regarding electro-oxidation, it was seen that COD and colour removal are both dependent on the reaction time of the system, while the DOC removal rate of different EAOPs was strongly related to the reactor volume. Furthermore, the uncertainty of the regression analysis on pollutant removal efficiency prediction was assessed. Finally, sensitivity analysis was done by Monte-Carlo method to check modest changes from input variables. Keywords Statistical analysis . Electro-coagulation . Anode efficiency . Electro-oxidation . Electrochemical advanced oxidation processes Article Highlights • Anode efficiency of different electrochemical methods is studied through statistical analysis. • Various anode characteristics like surface area and distance between electrodes are also considered. • Regression equations are developed for different electro-chemical processes. • Sensitivity analysis is conducted with Monte-Carlo to check correlations of different factors.
* Jannatul Rumky [email protected]; [email protected] Extended author information available on the last page of the article
J. Rumky et al.
1 Introduction In the last few decades, many electrochemical technologies have been developed and are used as alternative approaches for the removal of diverse pollutants from wastewater and sludge. Due to their high energy efficiency, amenability to safe operation and cost-effectiveness, electrochemical techniques have considerable potential for application in full-scale plants to remov
Data Loading...
