TY - JOUR
T1 - Utilization of water hyacinth (Eichhornia crassipes) rejects as phosphate-rich fertilizer
AU - Ramirez, Anyi
AU - Pérez, Sebastián
AU - Flórez, Elizabeth
AU - Acelas, Nancy
N1 - Funding Information:
The authors are grateful to Universidad de Medellín, Cenipalma and MINCIENCIAS for the financial: project 120677757983 .
Publisher Copyright:
© 2020 Elsevier Ltd.
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2021/2
Y1 - 2021/2
N2 - Phosphorus (P) recovery from water hyacinth is one of the promising sources to recovery and recycle P to alleviate P supply shortage in the future. The result of calcination temperature during the thermal treatment of calcium (Ca) and P-rich water hyacinth is presented here. Results showed a Ca/P molar ratio of 5.07 in water hyacinth ashes and, that with the increase in calcination temperature, P and Ca are transformed into hydroxyapatite. The amount of hydroxyapatite increased until 34.0 %, while other Ca phases such as CaO, CaCO3, and Ca(OH)2 were obtained in 6.1 %, 3.9 %, and 18.0 %, respectively. The bioavailability test showed that the material produced at 700 °C (hydroxyapatite and other Ca-rich phases) could be used as a fertilizer, with P slow release in aqueous solutions, giving up 3.7 % and 29.3 % of P release in deionized water and formic acid, respectively. Besides, CaO and Ca(OH)2 are used for soil neutralization as their disposition can help the crops.
AB - Phosphorus (P) recovery from water hyacinth is one of the promising sources to recovery and recycle P to alleviate P supply shortage in the future. The result of calcination temperature during the thermal treatment of calcium (Ca) and P-rich water hyacinth is presented here. Results showed a Ca/P molar ratio of 5.07 in water hyacinth ashes and, that with the increase in calcination temperature, P and Ca are transformed into hydroxyapatite. The amount of hydroxyapatite increased until 34.0 %, while other Ca phases such as CaO, CaCO3, and Ca(OH)2 were obtained in 6.1 %, 3.9 %, and 18.0 %, respectively. The bioavailability test showed that the material produced at 700 °C (hydroxyapatite and other Ca-rich phases) could be used as a fertilizer, with P slow release in aqueous solutions, giving up 3.7 % and 29.3 % of P release in deionized water and formic acid, respectively. Besides, CaO and Ca(OH)2 are used for soil neutralization as their disposition can help the crops.
KW - Biomass
KW - Calcium phosphate
KW - Hydroxyapatite
KW - Phosphate recycling
KW - Water hyacinth
UR - http://www.scopus.com/inward/record.url?scp=85097931197&partnerID=8YFLogxK
U2 - 10.1016/j.jece.2020.104776
DO - 10.1016/j.jece.2020.104776
M3 - Artículo
AN - SCOPUS:85097931197
SN - 2213-3437
VL - 9
JO - Journal of Environmental Chemical Engineering
JF - Journal of Environmental Chemical Engineering
IS - 1
M1 - 104776
ER -
