Synthesis and Characterization of Nano‐Crystallite Triple Super Phosphate (TSP) from Marine Mollusk Waste: Babylonia japonica, Oliva sayana, and Conasprella bermudensis

Author:

Kawsar Md.12,Sahadat Hossain Md.1ORCID,Akter Sumaiya2,Farhad Ali Md.3,Bahadur Newaz Mohammed2,Ahmed Samina1ORCID

Affiliation:

1. Glass Research Division Institute of Glass & Ceramic Research and Testing Bangladesh Council of Scientific and Industrial Research (BCSIR) Dhaka 1205 Bangladesh

2. Department of Applied Chemistry and Chemical Engineering Noakhali Science and Technology University Noakhali Bangladesh

3. Institute of Leather Engineering and Technology University of Dhaka Dhaka 1000 Bangladesh

Abstract

AbstractThe study aims to synthesize nano‐crystallite TSP using renewable, low‐cost, waste marine mollusk from three different species such as Babylonia japonica, Oliva sayana, and Conasprella bermudensis. The molar ratio of phosphate to calcium in triple superphosphate [TSP, Ca(H2PO4)2.H2O] significantly impacts its properties and fertilizer performance, in this case, we kept the ratio to 2. Raw TSP has a high phosphate content and lower calcium content. The synthesized TSP was analyzed using various techniques including TGA, XRD, EDX, FT‐IR, and SEM. The study utilized multiple XRD model equations to analyze crystallite size ( ), with all models except the Liner straight‐line method providing higher estimates for synthesized TSP. Furthermore, the values for stress (2×107 to 4×107 N/m2), strain (4×10−4 to 9×10−4), as well as energy density (4.54×103 to 16.27×103 J/m3) were also calculated for the synthesized product. However, the preferential growth calculation indicates that (010), (021), and (020) planes are the most thermodynamically stable planes for the growth of the synthesized TSP. Apart from that, FTIR result confirms that CaO, −OH, as well as PO43− functional groups are present in the synthesized products. This research suggests that marine mollusks can be utilized as a calcium precursor for P‐fertilizer and 60 % phosphoric acid, thereby reducing production costs by eliminating additional dehydrating. Additionally, waste marine mollusk shells could be utilized as an alternative to the production of phosphate‐based fertilizer.

Publisher

Wiley

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