Oxygen dynamics in crude oil contaminated salt marshes: I. aerobic respiration model
Document Type
Article
Publication Date
7-1-2001
Abstract
A simple model was developed to predict oxygen demand exerted by aerobic biodegradation of spilled crude oil and fertilizer added to stimulate biodegradation in salt marsh sediment. The role of aerobic respiration (AR) was determined using first-order G kinetics. The G kinetic rate constants were calculated from laboratory data sets through linear regression. The effect of oil and fertilizer on AR was quantified by comparing three treatments: (i) control (no oil and fertilizer amended), (ii) fertilized, and (iii) oiled and fertilized sediments. The effects of dissolved oxygen concentration in the overlying water and surface mass transfer coefficient were investigated. Aerobic respiration was strongly dependent on the overlying dissolved oxygen concentration when crude oil and fertilizer were added. Oiled/fertilized cores did not show higher SOD and AR than control cores when overlying DO concentration dropped below 5 mg l1. Results indicate that higher aerobic respiration in oiled/fertilized is exerted by aerobic biodegradation of crude oil and that major biodegradation of crude oil occurs only when DO level is high (> 5 mg l1). © 2001 Taylor & Francis Group, LLC.
Publication Source (Journal or Book title)
Environmental Technology (United Kingdom)
First Page
845
Last Page
854
Recommended Citation
Shin, W., & Pardue, J. (2001). Oxygen dynamics in crude oil contaminated salt marshes: I. aerobic respiration model. Environmental Technology (United Kingdom), 22 (7), 845-854. https://doi.org/10.1080/095933322086180321