Please use this identifier to cite or link to this item: https://hdl.handle.net/11499/5527
Title: Extraction, solubility and stability of metal complexes using stainless steel supercritical fluid extraction system
Authors: Özel, Mustafa Zafer
Bartle, K.D.
Clifford, A.A.
Burford, M.D.
Keywords: Corrosion
Extraction
Metal complex
Solubility
Stability
carbon dioxide
hexafluoroacetylacetone
iron
metal complex
stainless steel
unclassified drug
article
controlled study
corrosion
flow rate
iron chelation
nonhuman
priority journal
productivity
sample
soil
solubility
supercritical fluid extraction
United Kingdom
Abstract: Conventional supercritical fluid extraction (SFE) system are constructed using stainless steel due to its relative inertness, ready availability, tensile strength and low cost. Recently, metal complex solubilities and metal extraction using chelating agents have been investigated using a stainless steel SFE system. Metal complexes are usually soluble in supercritical carbon dioxide (SC-CO2) and so this was the fluid of choice for the experiments. During the chelation step, temperature and pressure have great effect on the extraction efficiency. Using a metal salt as a sample, and hexafluoroacetylacetone (HFAcAc) as a ligand, the most efficient extraction conditions were found to be 60°C and 400atm. However, when contaminated soil was used as a sample, extraction efficiency fell. This was thought to be related to the corrosion of the stainless steel SFE system by the ligand HFAcAc. During the 30min extraction period, 1678µg of iron was obtained. The corrosion of the SFE system was much greater during the soil extraction than during both the metal salt extraction and metal complex solubility experiments. Copyright (C) 2000 Elsevier Science B.V.
URI: https://hdl.handle.net/11499/5527
https://doi.org/10.1016/S0003-2670(00)00938-7
ISSN: 0003-2670
Appears in Collections:Fen-Edebiyat Fakültesi Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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