Abstract
This paper reports on a technical feasibility study of the production of organo-mineral fertiliser from the co-granulation of limestone powders with tea waste. The results from this preliminary study show that the co-granulation of tea waste provided an alternative method of waste recovery, as it converts the waste into a value-added product. Fertiliser granules were successfully produced from various compositions of limestone and tea waste. The effect of tea waste concentration on granule strength was analysed; the granule strength
was in the range 0.2 to 1.8 MPa depending on powder composition; increasing the tea waste mass fraction resulted in a reduction in granule strength.Varying the teawaste to limestone ratio also influenced the compressibility of the granules; the granules compressibility increased with increasing tea waste mass fraction. It was further found that increasing the mass fraction of tea waste in the binary mixture of powder reduced the granule median size of the batch.
was in the range 0.2 to 1.8 MPa depending on powder composition; increasing the tea waste mass fraction resulted in a reduction in granule strength.Varying the teawaste to limestone ratio also influenced the compressibility of the granules; the granules compressibility increased with increasing tea waste mass fraction. It was further found that increasing the mass fraction of tea waste in the binary mixture of powder reduced the granule median size of the batch.
| Original language | English |
|---|---|
| Pages (from-to) | 33-41 |
| Number of pages | 9 |
| Journal | Powder Technology |
| Volume | 252 |
| Early online date | 30 Oct 2013 |
| DOIs | |
| Publication status | Published - Jan 2014 |
Keywords
- Granulation
- strength
- tablets
- tea waste
- Limestone
- fertliser
ASJC Scopus subject areas
- Chemical Engineering (miscellaneous)
- General Chemical Engineering
