Abstract
Microbial removal of nitrate from drinking water was studied in laboratory columns packed with unprocessed short fiber (low quality) cotton (Gossypium hirsutum). Cotton served as the sole chemical and physical substrate for the microbial population. Removal of nitrate was rapidly achieved without the formation of nitrite. Cotton (cellulose)-dependent denitrification was affected by changes in temperature: denitrification rates at 14°C were approximately half of the rates observed at 30°C. The cotton was entirely consumed in the process. In a fresh reactor, colonization of substrate by bacteria appears to be the rate limiting factor in the removal of nitrate.
Original language | English |
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Pages (from-to) | 379-385 |
Number of pages | 7 |
Journal | Water Science and Technology |
Volume | 34 |
Issue number | 1-2 -2 pt 1 |
DOIs | |
State | Published - 1 Jan 1996 |
Event | Proceedings of the 1996 18th Biennial Conference of the International Association on Water Quality. Part 1 - Singapore, Singapore Duration: 23 Jun 1996 → 28 Jun 1996 |
Keywords
- Cellulose
- Cotton
- Denitrification
- Microbial water treatment
- Nitrate contamination
ASJC Scopus subject areas
- Environmental Engineering
- Water Science and Technology