The Inhibitory Effect of Salinity Anaerobic Microorganism Based on Kinetics Model

Abstract:

This paper compares the inhibitory effect of high CaCl₂ and MgCl₂ content on anaerobic microorganism based on kinetics model. Salt inhibition kinetics experiments were performed at granular sludge and activated sludge in order to investigate salt inhibition effects on kinetic constants. Half-velocity constant values considerably increased when CaCl₂ or MgCl₂ concentration increased from 0 to 35g/L for granular sludge and activated sludge. Salt inhibition biokinetic coefficients (K_ρ) were obtained by using Ghose and Tyagi model. For granular sludge, K_ρ of CaCl₂ was found to be 130.3 g/L, and K_ρ of MgCl₂ was found to be 86 g/L. For activated sludge, K_ρ of CaCl₂ was found to be 92.8 g/L, and K_ρ of MgCl₂ was found to be 77.6 g/L. Results showed that the inhibitory CaCl₂ limit was higher than the inhibitory MgCl₂ limit for anaerobic microorganisms.

• Periodical: Advanced Materials Research (Volumes 1092-1093)
• Pages: 651-654
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1092-1093.651
• Online since: March 2015
• Authors: Xiao Ling Zou*
• Keywords: Anaerobic, Biokinetic Coefficients, Biological Treatment, High Salinity

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