Development and Characterization of a Novel Soil Amendment Based on Biomass Fly Ash Encapsulated in Calcium Alginate Microspheres

Vinceković, Marko; Šegota, Suzana; Jurić, Slaven; Harja, Maria; Ondrasek, Gabrijel (2022) Development and Characterization of a Novel Soil Amendment Based on Biomass Fly Ash Encapsulated in Calcium Alginate Microspheres. International Journal of Molecular Sciences, 23 (17). ISSN 1422-0067

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Abstract

Biomass fly ash (BFA) from a biomass cogeneration plant was encapsulated into calcium alginate microspheres (ALG/Ca) and characterized. An FTIR analysis indicated that BFA loading weakened molecular interactions between ALG/Ca constituents (mainly hydrogen bonding and electrostatic interactions), thus changing the crosslinking density. SEM and AFM analyses revealed a wrinkled and rough surface with elongated and distorted granules. The in vitro release of BFA’s main components (K, Ca, and Mg) was controlled by diffusion through the gel-like matrix, but the kinetics and released amounts differed significantly. The smaller released amounts and slower release rates of Ca and Mg compared to K resulted from the differences in the solubility of their minerals as well as from the interactions of divalent cations with alginate chains. The physicochemical properties of the novel microsphere formulation reveal significant potential for the prolonged delivery of nutrients to crops in a safe manner.

Item Type:	Article
Uncontrolled Keywords:	biomass fly ash; encapsulation; calcium alginate; soil amendment; recycling of natural resources
Subjects:	BIOTECHNICAL SCIENCES > Agronomy
Divisions:	Division of Physical Chemistry
Projects:	Project title Project leader Project code Project type Nove biopolimerne mikrokapsule za kontrolirano otpuštanje tvari za zaštitu/ishranu bilja-NewBioCap/NoveBioKap Marko Vinceković UIP-2014-09-6462 HRZZ Transformacija pepela iz drvene biomase u građevne kompozite s dodanom vrijednošću-TAREC2 Nina Štirmer IP-2016-06-7701 HRZZ
Depositing User:	Diana Mikoč Radešić
Date Deposited:	25 Jan 2024 12:27
URI:	http://fulir.irb.hr/id/eprint/8394
DOI:	10.3390/ijms23179984

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