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Water 2017, 9(5), 341;

Mechanism of Nitrogen Removal from Aqueous Solutions Using Natural Scoria

1,2,3,* , 2,3
College of Environment and Resources, Jilin University, Changchun 130021, China
Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun 130021, China
Institute of Water Resources and Environment, Jilin University, Changchun 130021, China
Author to whom correspondence should be addressed.
Academic Editor: Robert Powell
Received: 8 March 2017 / Revised: 10 April 2017 / Accepted: 10 May 2017 / Published: 11 May 2017
(This article belongs to the Special Issue Groundwater Monitoring and Remediation)
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The efficiencies and mechanisms of nitrogen removal from groundwater by scoria were studied. When NH4+-N concentration was 0.5–10 mg/L, the removal was 96–89%. When NO2-N concentration was 0.1–5 mg/L, the removal was 93–85%. When NO3-N concentration was 30–150 mg/L, the removal was 85–70%. Additionally, van der Waals forces had a positive impact on the adsorption, which promoted NH4+-N adsorption. Ion exchange and dissolution did not exist. Functional groups of N-H, C-H, and C-N changed after adsorption. Overall, this study indicates that scoria is an ecologically friendly and safe material that can be utilized for groundwater purification to treat nitrogen-contaminated water. View Full-Text
Keywords: scoria; adsorption; nitrogen; mechanism; characterization scoria; adsorption; nitrogen; mechanism; characterization

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Dong, T.; Zhang, Y.; Su, X.; Chen, Z.; Si, C. Mechanism of Nitrogen Removal from Aqueous Solutions Using Natural Scoria. Water 2017, 9, 341.

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