Preliminary Study on Sustainable NPK Slow-Release Fertilizers Based on Byproducts and Leftovers: A Design-of-Experiment Approach.
Journal
ACS omega
ISSN: 2470-1343
Titre abrégé: ACS Omega
Pays: United States
ID NLM: 101691658
Informations de publication
Date de publication:
27 Oct 2020
27 Oct 2020
Historique:
received:
26
06
2020
accepted:
25
09
2020
entrez:
2
11
2020
pubmed:
3
11
2020
medline:
3
11
2020
Statut:
epublish
Résumé
In this study, an organic nitrogen-based coating was developed based on black soldier fly (BSF) prepupae reared on poultry dejections and deposited on ceramic lightweight aggregates (LWAs), containing phosphorous (P) and potassium (K) from agroresidues, leading to a complete nitrogen, phosphorus, and potassium (NPK) fertilizer. To obtain a resistant coating with good adhesion to LWAs, different plasticizing agents were tested (e.g., glycerol, cellulose, and polyethylene glycol). The coating formulation was optimized through a design-of-experiment (DoE) approach to correlate the effect of each mixture component on the coating's performance. BSF biomass was characterized through chemical and thermal routes, as well as the final coated LWAs, confirming their general agreement to fertilizer's requirements. Release tests in static conditions highlighted the barrier action of the coating, preventing uncontrolled release of potassium and phosphorus contained in the LWAs as well as the release of nitrogen after 21 days (near to 20%). Germination and growth tests indicated a valuable increase of the growth index, whereas the germination process is limited by the coating barrier effect. This work proposes a new product in the field of slow-release fertilizers designed by rational methodologies and innovative materials based on waste valorization, fully in agreement with a circular economy perspective.
Identifiants
pubmed: 33134675
doi: 10.1021/acsomega.0c03082
pmc: PMC7594001
doi:
Types de publication
Journal Article
Langues
eng
Pagination
27154-27163Informations de copyright
© 2020 American Chemical Society.
Déclaration de conflit d'intérêts
The authors declare no competing financial interest.
Références
Biomacromolecules. 2005 Mar-Apr;6(2):932-41
pubmed: 15762662
Sci Total Environ. 2020 Mar 20;709:136209
pubmed: 31884276
Carbohydr Polym. 2016 Sep 5;148:134-42
pubmed: 27185124
J Control Release. 2014 May 10;181:11-21
pubmed: 24593892
Carbohydr Polym. 2014 Nov 4;112:24-31
pubmed: 25129712
Food Res Int. 2018 Mar;105:812-820
pubmed: 29433277
Biopolymers. 2019 May;110(5):e23250
pubmed: 30589085
Carbohydr Polym. 2016 Oct 20;151:60-67
pubmed: 27474543
J Control Release. 2016 Mar 10;225:109-20
pubmed: 26809006
J Sci Food Agric. 2017 Jun;97(8):2594-2600
pubmed: 27734508
Materials (Basel). 2019 Oct 31;12(21):
pubmed: 31683570
Sci Total Environ. 2018 Feb 1;613-614:829-839
pubmed: 28942316
Int J Biol Macromol. 2016 Aug;89:144-51
pubmed: 27126169