Fabrication and application of boron doped diamond BDD electrode in olive mill wastewater treatment in Jordan

Journal of Water Reuse and Desalination

Inshad Jum'h¹  Arwa Abdelhay¹  Hussein Al-Taani¹  Mohammad Alnaief¹  Stefan Rosiwal²  Ahmad Telfah³ 

[1] German-Jordanian University, Amman 11180, Jordan E-mail: [e-mail];Institute of Metals Science and Technology (WTM), Friedrich-Alexander University, 5,91058 Erlangen, Germany;Leibniz-Institut für Analytische, Wissenschaften – ISAS, Bunsen-Kirchhoff-Str.11, 44139 Dortmund, Germany;

关键词: advanced oxidation processes;    boron-doped diamond electrode;    electrochemical oxidation;    olive mill wastewater;    phenolic compounds;   

DOI  :  10.2166/wrd.2016.062

来源: DOAJ

【 摘 要 】

A boron doped diamond (BDD) electrode was employed in an electrochemical reactor to oxidize the phenolic content of Jordanian olive mill wastewater. The BDD anode was fabricated using hot filament chemical vapor deposition on niobium and the morphology of the BDD electrode was characterized using an atomic force microscope. Then, electrolysis batch runs were carried out at laboratory scale to test the effect of different process parameters, namely, initial chemical oxygen demand (COD) load (72.9, 33.8, and 0.18 g/L), the addition of Na2SO4 as supporting electrolyte, and adding NaCl along with Na2SO4, on the efficiency of the treatment process. The results were reported in terms of COD, color and turbidity removal, and pH variation. The experiments revealed that electrochemical oxidation using BDD significantly reduced the COD by 85% with no supporting electrolytes. It was observed that adding Na2SO4 with NaCl brought the COD removal to higher than 90% after 7 hours of treatment for COD loads of 72.9 and 33.8 g/L, and after 2 hours for a COD load of 0.18 g/L. Likewise, color was completely removed regardless of the initial COD load. The turbidity for samples with 72.9 and 33.8 g/L as COD load reached a minimal value of 2.5 and 1 NTU respectively.

【 授权许可】

Unknown