Malaysian Journal of Analytical Sciences Vol 21 No 6 (2017): 1432 - 1437

CHARCOAL BASE METALLIC COMPOSITE ELECTRODE FOR WASTEWATER TREATMENT

(Elektrod Komposit Logam Berasaskan Arang Bagi Rawatan Air Buangan)

Majd Ahmed Jumaah¹*, Mohamed Rozali Othman^{1, 2}, Muhammad Rahimi Yusop¹, Jumat Salimon¹, Baydaa Khalaf¹, Wan Mohd Afiq Wan Mohd Khalik³

¹School of Chemical Sciences and Food Technology

²Centre for Water Research and Analysis (ALIR)

Faculty of Science and Technology,

Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia

³School of Marine and Environmental Sciences,

Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia

*Corresponding author: majd.ahmed88@yahoo.com

Received: 28 September 2016; Accepted: 6 March 2017

Abstract

In this study, a charcoal base metallic composite electrode which is low in cost and effective to treat wastewater from landfill leachate by electrochemical oxidation technique has been fabricated. The charcoal base metallic composite electrode was prepared by mixing together a weighed portion of charcoal, graphite and metals powder in different composition percentage with PVC as a binder in 4 mL THF which act as a solvent. Metals used in the preparation of the electrodes are Ag, Al, Co, Cu and Ni. The results show that the mixture of commercially available charcoal, metals and PVC at a composition of 50:20:30 (w/w), known as C50M20PVC30 electrode give a good stability, low cost and high formation of hypochlorite ion. Hypochlorite ion has been produced linked to the presence of chloride ions, thus having capability to degrade chemical pollutants in wastewater.

Keywords: charcoal, electrode, treatment, wastewater

Abstrak

Dalam kajian ini, elektrod komposit logam berasaskan arang dengan kos rendah dan efektif dalam merawat air buangan daripada tanah larut resap melalui teknik pengoksidaan elektrokimia telah dibangunkan. Elektrod komposit logam berasaskan arang telah disediakan dengan mencampurkan arang, grafit dan serbuk logam pada peratus komposisi yang berbeza di mana polivinil klorida sebagai pengikat di dalam 4 mL tetrahidrofuran (THF) sebagai pelarut. Logam yang digunakan dalam penyediaan elektrod ialah Ag, Al, Co, Cu dan Ni. Keputusan menunjukkan campuran arang komersial, logam dan PVC pada nisbah 50:20:30 (w/w), yang dikenali sebagai elektrod C50M20PVC30 memberi kestabilan yang baik, berkos rendah dan menghasilkan ion hipoklorit yang tinggi. Semasa pengoksidaan elektrokimia, ion hipoklorit telah dihasilkan disebabkan oleh kehadiran ion klorida yang membawa kepada keupayaan untuk penyingkiran bahan pencemar kimia di dalam air buangan.

Kata kunci: arang, elektrod, rawatan, air buangan

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