Facial reconstruction

Search LJMU Research Online

Browse Repository | Browse E-Theses

Defluoridation of drinking water using a new flow column-electrocoagulation reactor (FCER) - Experimental, statistical, and economic approach.

Hashim, KS and Shaw, A and Al Khaddar, RM and Ortoneda Pedrola, M and Phipps, D (2017) Defluoridation of drinking water using a new flow column-electrocoagulation reactor (FCER) - Experimental, statistical, and economic approach. Journal of Environental Management, 197. pp. 80-88. ISSN 0301-4797

[img] Text
Defluoridation of drinking water using a new flow column-electrocoagulation reactor (FCER) - Experimental, statistical, and economic approach..pdf - Accepted Version
Restricted to Repository staff only until 21 March 2019.
Available under License Creative Commons Attribution Non-commercial No Derivatives.

Download (720kB)

Abstract

A new batch, flow column electrocoagulation reactor (FCER) that utilises a perforated plate flow column as a mixer has been used to remove fluoride from drinking water. A comprehensive study has been carried out to assess its performance. The efficiency of fluoride removal (R%) as a function of key operational parameters such as initial pH, detention time (t), current density (CD), inter-electrode distance (ID) and initial concentration (C0) has been examined and an empirical model has been developed. A scanning electron microscopy (SEM) investigation of the influence of the EC process on morphology of the surface of the aluminium electrodes, showed the erosion caused by aluminium loss. A preliminary estimation of the reactor's operating cost is suggested, allowing for the energy from recycling of hydrogen gas hydrogen gas produced amount. The results obtained showed that 98% of fluoride was removed within 25 min of electrolysis at pH of 6, ID of 5 mm, and CD of 2 mA/cm(2). The general relationship between fluoride removal and operating parameters could be described by a linear model with R(2) of 0.823. The contribution of the operating parameters to the suggested model followed the order: t > CD > C0 > ID > pH. The SEM images obtained showed that, after the EC process, the surface of the anodes, became non-uniform with a large number of irregularities due to the generation of aluminium hydroxides. It is suggested that these do not materially affect the performance. A provisional estimate of the operating cost was 0.379 US $/m(3). Additionally, it has been found that 0.6 kW/m(3) is potentially recoverable from the H2 gas.

Item Type: Article
Uncontrolled Keywords: MD Multidisciplinary
Subjects: T Technology > TD Environmental technology. Sanitary engineering
T Technology > TP Chemical technology
Divisions: Built Environment
Civil Engineering
Publisher: Elsevier
Related URLs:
Date Deposited: 03 Apr 2017 08:36
Last Modified: 13 Sep 2017 10:26
DOI or Identification number: 10.1016/j.jenvman.2017.03.048
URI: http://researchonline.ljmu.ac.uk/id/eprint/6198

Actions (login required)

View Item View Item