Treatment of rhodamine b and acid red 18 by electrocoagulation using iron electrode
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Date
2018-06
Authors
Muhammad Akmal Zulkifli
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Abstract
The electrocoagulation (EC) process is an electrochemical process that introducing
coagulants and removing suspended solids, colloidal materials, metal, and other dissolved
solids from wastewaters. In this study, Acid Red 18 (AR18) and Rhodamine B (RhB) are
used as synthetic wastewater. The parameter involved in this study are initial
concentration of dye solution, current density and electrocoagulation time. The process
efficiency of EC was determined by percentages removal of colour and chemical oxygen
demand (COD). It was found that the increasing initial concentration will reduce removal
efficiencies for both dyes solutions. Meanwhile, optimum current density which is 50
A/m2 will increase the efficiencies of colour with 95% for AR18 and 70% for RhB and
COD removal with 83% for AR18 and 43% for RhB. For EC time variables, the optimum
time of treatment for AR18 is 1 hour, while optimum time for RhB is 2 hours with
efficiencies 91% and 87% respectively.