Dissolved oxygen effect on the biodegradability of biowaste
Composting is one of the most used technologies for the use of municipal biowaste - MBW. Being an aerobic process, the efficiency of aeration can affect the development of the process and product quality. In this study, we evaluated at laboratory scale, the influence of the concentration of dissolved oxygen- OD on aerobic biodegradability of BOM of a municipality, where segregation practices are performed at the source and selective collection; for this five concentrations of OD (<0.5; 1.0; 1.5; 2.0; 2.5mg L-1) was studied by differential first-order kinetic model to determine rates Substrate Utilization-TUS, biomass growth rates-TCB and through respirometry the rate of oxygen consumption-TCO. Statistics from a mixed linear model analysis and Tukey test (p <0.05) were performed, finding that concentrations of OD assessed, fall into three groups in terms of COD reduction: i) less than 0.5mg OD * L-1); ii) 1.0 ≤OD≤ 1.5mg L-1 and iii) 2.0 ≤OD≤ 2.5mg L-1, the latter in which the most favorable conditions for the transformation kinetics are presented substrate with TUS between 0,18 to 0,21 d-1, in which they have the greatest TCO and TCB. In contrast, groups i and ii presented TUS between 0.02 and 0.12d-1, indicating that the OD affects the transformation of the substrate.
Main Authors: | Soto, Jonathan, Torres, Patricia, Barba, Luz Edith, Fernando Marmolejo, Luis, Torres, Wilmar A., Guzmán, María A., Perea, Laura M. |
---|---|
Format: | Digital revista |
Language: | spa |
Published: |
Universidad de Ciencias Aplicadas y Ambientales U.D.C.A
2015
|
Online Access: | https://revistas.udca.edu.co/index.php/ruadc/article/view/179 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Similar Items
-
Effect of adding bulking materials over the composting process of municipal solid biowastes
by: Oviedo-Ocaña,Ricardo, et al.
Published: (2015) -
ANAEROBIC DIGESTION OF MUNICIPAL BIOWASTE FOR THE PRODUCTION OF RENEWABLE ENERGY: EFFECT OF PARTICLE SIZE
by: Parra-Orobio,Brayan Alexis, et al.
Published: (2017) -
Agroenvironmental systems selection for using compost from municipal biowastes
by: Daza, Martha Constanza, et al.
Published: (2015) -
Evaluation of the Addition of Wood Ash to Control the pH of Substrates in Municipal Biowaste Composting
by: Oviedo-Ocaña,Edgar Ricardo, et al.
Published: (2014) -
Dissolved oxygen in gasoline and tank
by: Ramdeen, Preya (University of the West Indies, St. Augustine Campus, Dept. of Chemical Engineering, Trinidad and Tobago), et al.
Published: (2020-06)