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- Title
A BOD monitoring disposable reactor with alginate-entrapped bacteria.
- Authors
Villalobos, Patricio; Acevedo, Cristian; Albornoz, Fernando; Sánchez, Elizabeth; Valdés, Erika; Galindo, Raúl; Young, Manuel
- Abstract
Biochemical oxygen demand (BOD) is a measure of the amount of dissolved oxygen that is required for the biochemical oxidation of the organic compounds in 5 days. New biosensor-based methods have been conducted for a faster determination of BOD. In this study, a mathematical model to evaluate the feasibility of using a BOD sensor, based on disposable alginate-entrapped bacteria, for monitoring BOD in situ was applied. The model considers the influences of alginate bead size and bacterial concentration. The disposable biosensor can be adapted according to specific requirements depending on the organic load contained in the wastewater. Using Klein and Washausen parameter in a Lineweaver–Burk plot, the glucose diffusivity was calculated in 6.4 × 10 (m/s) for beads of 1 mm in diameter and slight diffusion restrictions were observed ( n = 0.85). Experimental results showed a correlation ( p < 0.05) between the respirometric peak and the standard BOD test. The biosensor response was representative of BOD.
- Subjects
BIOCHEMICAL oxygen demand; WATER pollution; SEWAGE analysis; WATER analysis; BIOSENSORS; BIOMEDICAL transducers; ALGINATES
- Publication
Bioprocess & Biosystems Engineering, 2010, Vol 33, Issue 8, p961
- ISSN
1615-7591
- Publication type
Article
- DOI
10.1007/s00449-010-0420-z