Open AccessFEASIBILITY OF H2 PRODUCTION BY ACID CORROSION USING H2SIF6 AND WASTE FE SOURCES
Author(s) -
Tatiane Maeda,
Letícia Faria Teixeira,
Lorrane Cristine Caixeta,
Raíssa Quaiatti Antonelli,
Camila Prestes Pinto,
Sandra Cristina Dantas,
Priscila Silva,
Ana Cláudia Granato,
David Maikel Fernandes,
Geoffroy Roger Pointer Malpass
Publication year - 2021
Publication title -
química nova
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.214
H-Index - 73
eISSN - 1678-7064
pISSN - 0100-4042
DOI - 10.21577/0100-4042.20170778
Subject(s) - rebar , corrosion , fertilizer , waste management , environmental science , dissolution , materials science , acid gas , metallurgy , pulp and paper industry , chemistry , engineering , organic chemistry
This study investigated the feasibility of H2 production by acid corrosion, employing a by-product from the fertilizer industry (Hexafluorsilic acid - H2SiF6) and waste iron sources. Different masses of metal from three different sources: iron powder (waste from metal workshops), steel wool and rebar (construction waste), were reacted with various proportions of H2SiF6 with HCl. The influence of the variables was evaluated by factorial design, verifying greater production of H2 for materials with higher contact areas. The lowest production was observed for construction industry waste (rebar) probably due to the presence of protective films and lower contact area. The gas produced was analyzed by gas chromatography and was found to consist only of H2 (up to 99%) and air. The results indicate a promising application of H2SiF6, which is generated in large quantities during phosphate fertilizer production and has few commercial applications. The method proposed is promising, it does not emit toxic or polluting gases, contributing to the sustainable generation of H2.