Evaluation of a static granular bed reactor using a chemical oxygen demand balance and mathematical modeling

Seung Joo Lim, Peter Fox

Research output: Contribution to journalArticle

5 Scopus citations

Abstract

In order to evaluate the static granular bed reactor (SGBR), a chemical oxygen demand (COD) balance was used along with a mathematical model. The SGBR was operated with an organic loading rate (OLR) ranging from 0.8 to 5.5kg/m3 day at 24°C. The average COD removal efficiency was 87.4%, and the removal efficiencies of COD, carbohydrates, and proteins increased with an OLR, while the lipids removal efficiency was not a function of an OLR. From the results of the COD balance, the yield of biomass increased with an OLR. The SGBR was modeled using the general transport equation considering advection, diffusion, and degradation by microorganisms, and the first-order reaction rate constant was 0.0166/day. The simulation results were in excellent agreement with experimental data. In addition, the SGBR model provided mechanistic insight into why the COD removal efficiency in the SGBR is proportional to an OLR.

Original languageEnglish (US)
Pages (from-to)6399-6404
Number of pages6
JournalBioresource Technology
Volume102
Issue number11
DOIs
StatePublished - Jun 1 2011

Keywords

  • COD balance
  • Mathematical model
  • Organic loading rate
  • Static granular bed reactor

ASJC Scopus subject areas

  • Bioengineering
  • Environmental Engineering
  • Renewable Energy, Sustainability and the Environment
  • Waste Management and Disposal

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