The appropriate and effective materials used for oil spill clean-up are becoming of great interest to researchers. This is due to the need for an environmentally acceptable process. In this work, theoretical and mathematical tools were applied to investigate the influence of pH as an inhibiting parameter for the suitability of sawdust for oil spill clean-up. One of the functional parameters that could influence the rate of bioadsorption of an absorbent material such as sawdust is the pH. The rate of absorption with respect to pH was developed using developed models for the study, the maximum specific rate and the equilibrium constant were developed. The rate of bioadsorption applying hardwood, semi hardwood and softwood were thoroughly investigated. The study is imperative and useful because it will be applied in predicting and monitoring the rate of Bioadsorption using this material as an absorbent for effective remediation of contaminated aquatic environment.