Leng, L;
Bogush, AA;
Roy, A;
Stegemann, JA;
(2019)
Characterisation of ashes from waste biomass power plants and phosphorus recovery.
Science of the Total Environment
, 690
pp. 573-583.
10.1016/j.scitotenv.2019.06.312.
Preview |
Text
Stegemann STOTEN-D-19-07294R1.pdf - Accepted Version Download (1MB) | Preview |
Abstract
Biowastes, such as meat and bone meal (MBM), and poultry litter (PL), are used as energy sources for industrial combustion in the UK. However, the biomass ashes remaining after combustion, which contain nutrients such as phosphorus, are landfilled rather than utilised. To promote their utilisation, biomass ashes from industries were characterised in terms of their elemental and mineral compositions, phosphorus extractability, and pH-dependent leachability. These ashes were highly alkaline (pH as high as 13), and rich in calcium and phosphorus. The P bio-availabilities in the ash evaluated by Olsen's extraction were low. Hydroxyapatite and potassium sodium calcium phosphate were identified by X-ray powder diffraction (XRD) as the major phases in the MBM and PL ashes, respectively. The leaching of P, Ca, and many other elements was pH dependent, with considerable increase in leaching below about pH 6. P recovery by acid dissolution (e.g., with H2SO4) seems feasible and promising; the optimized acid consumption for ~90% P recovery could be as low as 3.2–5.3 mol H+/mol P.
| Type: | Article |
|---|---|
| Title: | Characterisation of ashes from waste biomass power plants and phosphorus recovery |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.scitotenv.2019.06.312 |
| Publisher version: | https://doi.org/10.1016/j.scitotenv.2019.06.312 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Incineration, Fertiliser, Phosphorus recovery, Acid neutralization capacity, Animal manure |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Civil, Environ and Geomatic Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10078664 |
Loading...
Loading...Loading...Loading...Archive Staff Only
 |
View Item |
