Abstract
Nitrogen is an important parameter of leather tanning wastewaters. Magnesium ammonium phosphate (MAP) precipitation is a chemical treatment alternative for ammonia removal. In this study, a detailed source-based wastewater characterisation of a bovine leather tannery was made and nitrogen speciation as well as other basic pollutant parameter values was evaluated. This evaluation has led to definition of alternatives for source-based MAP treatment. MAP precipitation experiments conducted on these alternatives have yielded over 90% ammonia removal at pH 9.5 and using stoichiometric doses. Among the alternatives tested liming-deliming and bating-washing was found to be the most advantageous providing 71% ammonia removal.
| Original language | English |
|---|---|
| Pages (from-to) | 205-215 |
| Number of pages | 11 |
| Journal | Water Science and Technology |
| Volume | 45 |
| Issue number | 12 |
| DOIs | |
| Publication status | Published - 2002 |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 6 Clean Water and Sanitation -
SDG 9 Industry, Innovation, and Infrastructure
Keywords
- Bovine leather processing
- Leather tanning industry
- Magnesium ammonium phosphate precipitation
- Nitrogen removal
- Source-based characterisation
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