A review of the precipitation of nickel from salt solutions by hydrogen reduction

Kinetic studies of gold(III) chloride complex reduction and solid phase precipitation in acidic aqueous system using dimethylamine borane as reducing agent

“…However, we can assume that the rate of Reaction (4) is significantly lower in comparison to heterogeneous process (5). Additionally, despite that Process (19) is thermodynamically spontaneous, it may be omitted in the considerations due to high stability of hydrogen molecules at ambient temperatures and under low pressure (Agawam et al, 2006;Saarinen et al, 1998). Using these assumptions the differential Eqs.…”

Kinetic modelling of nickel powder precipitation by high-pressure hydrogen reduction

“…However, until recently, fundamental research into the precipitation process has been limited. Comprehensive reviews of the nickel reduction process have been done by Saarinen et al (1998) and Agrawal et al (2006). Recent investigations have largely focussed on studying the precipitation mechanisms, reaction kinetics, thermodynamic modelling of ammoniacal nickel sulphate solutions and the effect of impurities on the precipitation process.…”

Recovery of nickel and cobalt from organic acid complexes: Adsorption mechanisms of metal-organic complexes onto aminophosphonate chelating resin

“…Metal recovery from solution is typically achieved by techniques including chemical precipitation [3,4], solvent extraction [5,6] and adsorption [7][8][9][10][11][12][13]. Adsorption is conducted using adsorbents including activated carbon [7] and ion-exchange resins [8,9].…”