Experiments are conducted on kaolin contaminated with a lixiviant obtained from a sodium dichromate plant residue to demonstrate the efficacy of electrochemical cleaning. After 120 h, only 36% chromium is removed from the ...

Nickel hydroxide samples were prepared from nickel sulphate solution using three different precipitating agents, namely urea, sodium hydroxide and ammonia under identical preparation conditions. Depending on the nature of ...

Turbostratic nickel hydroxide samples were prepared by neutralising nickel sulphate solution with urea. Initial nickel concentration and urea to nickel ratio were the two parameters changed for studying their effect on ...

The lipid and FA compositions of TAG seed oil of ambrette (Hibiscus abelmoschus), contrary to earlier reports, were found to contain only a small amount of epoxy FA. Higher HBr absorption values were shown to be due to the ...

The 3-O-fatty acid ester derivatives (C-12-C-18) of two pentacyclic triterpenic acids, ursolic acid and oleanolic acid, were synthesized under mild esterification conditions in excellent yields (80-85%) and screened for ...