[Download] "Analysis of In-Situ Bioremediation of PAH Contaminated Sediments Using Hollow Fiber Membranes" by Priyank Srivastava * eBook PDF Kindle ePub Free

eBook details

Title: Analysis of In-Situ Bioremediation of PAH Contaminated Sediments Using Hollow Fiber Membranes
Author : Priyank Srivastava
Release Date : January 21, 2013
Genre: Computers,Books,Computers & Internet,
Pages : * pages
Size : 18043 KB

Description

Sediment contamination is a global environmental issue and there are no treatment technologies that can be readily applied except dredging, which is very expensive and time consuming. In this thesis, a computer model has been developed and applied to in-situ bioremediation of contaminated sediments. The mathematical model has been applied to experimental data that was obtained previously using a bench-scale system using sediments contaminated with polycyclic aromatic hydrocarbons (PAHs). The use of hollow fiber membranes offers advantages of cost-effectively supplying and controlling the availability of oxygen (air), nutrients or other electron acceptors, such as nitrate and sulfate to the contaminated sediments, without significant loss to the water column. The biokinetic and transport parameters in the mathematical model were fitted to the bench-scale experimental data to achieve a low average error between the experimental and model values. The fitted model was used to calculate the design of the hollow fiber system, such as distance between the fibers. The WASP-6 computer program, developed previously for calculating dissolved oxygen levels in natural water bodies, was used to simulate the impact of contaminated sediments and the effect of using the membrane system to preserve the dissolved oxygen levels. Results of this study have shown that controlled delivery of oxygen from air is a feasible technique to achieve accelerated bioremediation rates of PAH contaminated sediments and improved water quality in rivers and lakes adversely impacted by these contaminated sediments. Advisors/Committee Members: Govind, Dr. Rakesh.