Faculty Advisor

Bergendahl, John Andrew

Faculty Advisor

Braun, Isa Bar-On

Abstract

This project examined the efficacy of solid sodium bicarbonate as a low-cost, viable substitute for carbon dioxide gas in small- scale cyanobacterial-algal (microbial) mat agricultural wastewater treatment. Experimentation over 35 days with nitrate-rich wastewater resulted in removal efficiency rates up to 37.2% of NO3 for microbial mats treated with solid sodium bicarbonate. Reaction rate modeling determined a rate constant of 0.0166/day and Excel modeling determined a projected hydraulic residence time with increased microbial mat area for an estimated 75% removal. Recommendations include further long-term experimentation and suggestions for an initial prototype design.

Publisher

Worcester Polytechnic Institute

Date Accepted

April 2019

Major

Environmental Engineering

Project Type

Major Qualifying Project

Accessibility

Unrestricted

Advisor Department

Civil and Environmental Engineering

Advisor Department

Mechanical Engineering

Share

COinS