Concentration optimization of sodium percarbonate as buffering catholyte on stacked microbial desalination cell by utilizing tofu wastewater as a substrate

Tasya Ayu Febriana, Maghfira Risang Khairiza, Raissa Maulina, Tania Surya Utami, Rita Arbianti, Heri Hermansyah

Research output: Contribution to journalArticlepeer-review

Abstract

The objective of this research is to obtain the optimum concentration of Sodium percarbonate (SP) as catholyte which gives the best desalination performance in Stacked Microbial Desalination Cell (SMDC) system using tofu wastewater as a substrate. SMDC is a promising technology for wastewater treatment and water desalination to overcome the problem of water crisis and the use of Sodium percarbonate will prevent pH imbalance which is one of the major issues in SMDC technology. Four Sodium percarbonate concentration variations of 0.05, 0.1, 0.15 and 0.2M were examined at 50 hours operating time. The optimum performance of Sodium percarbonate is then compared with other commercial catholyte Potassium permanganate. The result of this research is the optimum concentration of sodium percarbonate as a catholyte is at concentration equal to 0.15 M with 1.77% salt removal in Desalination-Cathode Chamber and 0.82% salt removal in Desalination-Anode Chamber. Also, the best catholyte is SP in comparison to KMnO4 because it acts as a better electron acceptor (oxidation agent) as well as buffering catholyte with higher value of SDR and TDR equal to 1.2469 g/(L.h) and 1.8704 g/h respectively.

Original languageEnglish
Pages (from-to)217-228
Number of pages12
JournalEngineering Journal
Volume24
Issue number4
DOIs
Publication statusPublished - 31 Jul 2020

Keywords

  • Microbial desalination cell
  • Sodium percarbonate
  • Stacked microbial desalination cell
  • Tofu wastewater

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