Sulfur fertilizer based on inverse vulcanization process with soybean oil

Author(s)

Valle, Stella F. ^{[1, 2]} ; Giroto, Amanda S. ^[1] ; Klaic, Rodrigo ^[1] ; Guimaraes, Gelton G. F. ^{[3, 1]} ; Ribeiro, Caue ^{[4, 1]}

Affiliation

^[1] Embrapa Instrumentat, 1452, 15 Novembro St, CP 741, BR-13560970 Sao Carlos, SP - Brazil

^[2] Univ Fed Sao Carlos, Dept Chem, Washington Luiz Rd Km 235, BR-13565905 Sao Carlos, SP - Brazil

^[3] EPAGRI Agr Res & Rural Extens Co Santa Catarina, 6800 Rd Antonio Heil, BR-88318112 Itajai, SC - Brazil

^[4] Forschungszentrum Julich, Inst Energy & Climate Res IEK 3, Electrochem Proc Engn, D-52425 Julich - Germany

• Document type: Journal article
• Source: Polymer Degradation and Stability; v. 162, p. 102-105, APR 2019.
• Web of Science Citations: 6

Abstract

Sulfur deficiency in soils has become an increasing concern over the past decades. Despite elemental sulfur (S-8) vast utilization as a commercial fertilizer, S-8 has to be biologically oxidized for plant assimilation, drastically limiting its efficiency. Therefore, we propose a new fertilizer in which S-8 structure is more accessible to oxidizing microorganisms by chemical modification via inverse vulcanization technique, a solvent-free copolymerization method, with soybean oil as comonomer. Sulfur oxidation experiments were performed by A. niger submerged cultivation, confirming that the homogeneous rubbery-like material provides enhanced oxidation, with great potential as multifunctional sulfurfertilizer. (C) 2019 Elsevier Ltd. All rights reserved. (AU)

• FAPESP's process: 13/11821-5 - Study of Nanosize Phosphate Solubilization Dispersed in Matrices of Different Solubilities
• Grantee: Amanda Soares Giroto
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 18/10104-1 - Nanocomposites Preparation from Urea modified with Glycerol for optimization of Process of Controlled Release of Nutrients
• Grantee: Amanda Soares Giroto
• Support Opportunities: Scholarships in Brazil - Post-Doctoral