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Nitrate Nitrate is a colorless, odorless, and tasteless compound that is present in groundwater. Nitrate can be expressed either as NO3(nitrate) or NO3-N (nitrate-nitrogen).Proper management of nitrogen sources such as fertilizers and manures can minimize contamination of drinking water. Goal

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  1. Nitrate Nitrate is a colorless, odorless, and tasteless compound that is present in groundwater. Nitrate can be expressed either as NO3(nitrate) or NO3-N (nitrate-nitrogen).Proper management of nitrogen sources such as fertilizers and manures can minimize contamination of drinking water. Goal High nitrate level in water especially drinking water causes serious health issues. Analyzing water quality and removal of nitrate using a natural treatment system in the form of denitrifying bioreactor is the goal of this research. Students are responsible for determining the environmental conditions required  in the desired system to ensure that nitrate is effectively removed by dominant species through biological reactions. Denitrifying Bioreactor In order to reach our goal, we should design a Denitrification Bioreactor. Denitrification Bioreactors for agricultural drainage are one of the newest technologies being investigated for practical edge of filed nitrate-nitrogen (NO3-N) reduction. Bioreactor is a container or engineered device in which a chemical process is carried out that supports a biologically active environment. Denitrification generally proceeds through a step wise reduction of some combination of the following intermediate forms: NO3− → NO2− → NO + N2O → N2. Efficient electron donors such as wood chips, charcoal, alfalfa, newspaper, and saw dust are carbon sources for removal of nitrate from contaminated water . The source of nitrate removal that we used in our design was charcoal. Design and Materials Tubing that fits the pump provided Hot gun to seal tubing reactor connections 5mg/l contaminated water Water bottles Charcoal Spectrophotometer and chemicals required to measure nitrate level Charcoal consisting of carbon Design , Method, and Materials Results Date Nitrate level 10/17/2013 0.335 10/24/2013 0.30 1/12/2013 0.42 Graph Learning Objectives Using sources of carbon in reducing nitrate level. Design bioreactor using simple tools and materials to examine how charcoal as a source of carbon reduced high nitrate level. Analyze how to interpret the data collected from bioreactor. Evaluate the results of Nitrate. Results and Graph Conclusion Protecting water especially drinking water from contamination is important for our health while in this process we treated contaminated water using charcoal as a source of carbon in our designed bioreactor in a biologically active environment to reduce the nitrate level from 5 mg/l contaminated water to 0.3. Christianson, Laura,E.Design and Performance of denitrification bioreactor. 2011.Web. 15 Oct 2013. “Nitrate Reduction and Denitrification.” Web. 20 Oct 2013. Self ,J.R. and Waskom R.M. “Nitrates in Drinking Water.” 21November 2013. Web. 25 November 2013. Andrea andreahazyl@hotmail.com Diego G35KENSTYLEDG@gmail.com Araz Araz_khachikian@yahoo.com Pasadena City College Araz Khachikian, Andrea Nava, Diego Gutierrez Denitrifying Bioreactor • References Design Contacts

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