2007
DOI: 10.1016/j.cej.2006.10.026
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Mass transfer correlation of simultaneous removal by cementation of nickel and cobalt from sulfate industrial solution containing copper

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Cited by 23 publications
(10 citation statements)
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“…2a) exhibit two rate regions after the transition period that is approximately 5 min: a fast initial period and a final slower one. This behaviour of different reaction rates during the cementation process was observed earlier [8,[12][13][14][15][16]. In contrast to the present results Lee et al [12] reported a slow initial rate followed by a period of enhanced reaction using rotating zinc disc.…”
Section: Kinetics Resultscontrasting
confidence: 83%
See 3 more Smart Citations
“…2a) exhibit two rate regions after the transition period that is approximately 5 min: a fast initial period and a final slower one. This behaviour of different reaction rates during the cementation process was observed earlier [8,[12][13][14][15][16]. In contrast to the present results Lee et al [12] reported a slow initial rate followed by a period of enhanced reaction using rotating zinc disc.…”
Section: Kinetics Resultscontrasting
confidence: 83%
“…They attributed this behaviour to the formation of a porous layer which increased the roughness of the surface and, hence, the degree of turbulence leading to an increase in the mass transfer rate. Dib and Makhloufi [8,14] and Nadkarni and Wadsworth [13] reported a decrease in the rate of cementation and attributed this decrease to the formation of a solid layer on the surface. This last view is probably more pronounced on the smaller area particles where formation of coherent non-porous precipitate is likely to occur and consequently reduces the rate of mass transfer to the surface of the particles as it is found in this work too.…”
Section: Kinetics Resultsmentioning
confidence: 99%
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“…The cementation processes have been constantly used and researched [3][4][5][6], some of them are batch agitated processes, other use reactors with disc rotating cylinder 4. Silver is the most studied metal using zinc as a cementing medium 3; however, researches to recover Au, Co, Cd, Cu and Ni have also been reported [3,[7][8][9][10][11][12]. It has been reported Abstract: Silver cementation with zinc from residual X ray fixers was studied.…”
Section: Introductionmentioning
confidence: 99%