Mechanism of Nitrogen Removal from Aqueous Solutions Using Natural Scoria
| Autor: | Zhiyu Chen, Tianzi Dong, Chaoqun Si, Yuling Zhang, Xiaosi Su |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Denitrification
lcsh:Hydraulic engineering Geography Planning and Development Inorganic chemistry chemistry.chemical_element mechanism 02 engineering and technology 010501 environmental sciences Aquatic Science 01 natural sciences Biochemistry nitrogen Adsorption lcsh:Water supply for domestic and industrial purposes lcsh:TC1-978 characterization Dissolution 0105 earth and related environmental sciences Water Science and Technology lcsh:TD201-500 Aqueous solution Ion exchange Chemistry Environmental engineering 021001 nanoscience & nanotechnology Nitrogen scoria adsorption Scoria 0210 nano-technology Groundwater |
| Zdroj: | Water, Vol 9, Iss 5, p 341 (2017) Water; Volume 9; Issue 5; Pages: 341 |
| ISSN: | 2073-4441 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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