| Title |
Research Paper Thermal conversion of fish bones into fertilizers and biostimulants for plant growth-A low tech valorization process for the development of circular economy in least developed countries |
| ID_Doc |
28260 |
| Authors |
Carella, F; Seck, M; Esposti, LD; Diadiou, H; Maienza, A; Baronti, S; Vignaroli, P; Vaccari, FP; Iafisco, M; Adamiano, A |
| Title |
Research Paper Thermal conversion of fish bones into fertilizers and biostimulants for plant growth-A low tech valorization process for the development of circular economy in least developed countries |
| Year |
2021 |
| Published |
Journal Of Environmental Chemical Engineering, 9.0, 1 |
| DOI |
10.1016/j.jece.2020.104815 |
| Abstract |
Local food production systems of least developed countries (LDCs) are more vulnerable to environmental factors, such as climate change, with respect to those of developed ones. Hence, the development of low-tech processes to empower LDCs adaptive capacity through a circular economy approach is very promising. Here, we report on a straightforward process for potential application in LDCs contexts based on the thermal conversion of fishery byproducts (fish bone) into calcium phosphate-based materials with application as fertilizers and biostimulants. Sardinella aurita bones collected from artisanal ports in Senegal were calcined in air at 300 degrees C, 600 degrees C and 900 degrees C. The sample obtained at 300 degrees C was a composite material made of an organic part, deriving from the uncomplete combustion of fish bone collagen and fatty acid, and an inorganic part made of very poorly crystalline hydroxyapatite. The other two samples obtained at 600 degrees C and 900 degrees C had a negligible content of organic matter, and consisted of hydroxyapatite and beta-TCP. Materials phytotoxicity was tested against Lepidium sativum seed, and their bio-stimulation activity was assayed on Zea mais seedlings and coleoptiles. All the materials showed promising results in terms of seed germination, plant fertilization and corn coleoptile biostimulation. Finally, we briefly analyzed the environmental impacts and economic cost of the proposed low-tech thermal process to confirm its large-scale applicability in LDCs for the conversion of fish bones into valuable products. |
| Author Keywords |
Fertilizer; Circular economy; Calcium phosphate; Fish bones; Least developed countries |
| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Science Citation Index Expanded (SCI-EXPANDED); Social Science Citation Index (SSCI) |
| EID |
WOS:000615229300004 |
| WoS Category |
Engineering, Environmental; Engineering, Chemical |
| Research Area |
Engineering |
| PDF |
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