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Utilization of water hyacinth (Eichhornia crassipes) rejects as phosphate-rich fertilizer

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Ramirez A.
Pérez S.
Flórez E.
Acelas N.
TY - GEN T1 - Utilization of water hyacinth (Eichhornia crassipes) rejects as phosphate-rich fertilizer AU - Ramirez A. AU - Pérez S. AU - Flórez E. AU - Acelas N. UR - http://hdl.handle.net/11407/5902 PB - Elsevier Ltd 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. © 2020 Elsevier Ltd. ER - @misc{11407_5902, author = {Ramirez A. and Pérez S. and Flórez E. and Acelas N.}, title = {Utilization of water hyacinth (Eichhornia crassipes) rejects as phosphate-rich fertilizer}, year = {}, abstract = {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. © 2020 Elsevier Ltd.}, url = {http://hdl.handle.net/11407/5902} }RT Generic T1 Utilization of water hyacinth (Eichhornia crassipes) rejects as phosphate-rich fertilizer A1 Ramirez A. A1 Pérez S. A1 Flórez E. A1 Acelas N. LK http://hdl.handle.net/11407/5902 PB Elsevier Ltd 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. © 2020 Elsevier Ltd. OL Spanish (121)
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Abstract
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. © 2020 Elsevier Ltd.
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