2002
DOI: 10.1016/s0039-9140(01)00677-4
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Removal and recovery of chromium and chromium speciation with MINTEQA2

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Cited by 121 publications
(61 citation statements)
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“…Although further treatment of tannery wastewater after initial physico-chemical treatment, using methods such as ion exchange (Kocaoba and Akcin, 2002) or reverse osmosis (Hafez et al, 2002) are efficient; they are however, in terms of energy and/or chemicals used considered expensive. Therefore for small factories these treatments are often not considered to be commercially viable (Khan, 2001).…”
Section: Resultsmentioning
confidence: 99%
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“…Although further treatment of tannery wastewater after initial physico-chemical treatment, using methods such as ion exchange (Kocaoba and Akcin, 2002) or reverse osmosis (Hafez et al, 2002) are efficient; they are however, in terms of energy and/or chemicals used considered expensive. Therefore for small factories these treatments are often not considered to be commercially viable (Khan, 2001).…”
Section: Resultsmentioning
confidence: 99%
“…The wetland system currently under investigation might not match ion exchange resin treatment (Kocaoba and Akcin, 2002) for speed (20 minutes) of treatment, but the P. purpureum and B. decumbens systems achieved a similar percentage removal (95%) in 3 -4 hours, and up to 99.6% within 24 hours.…”
Section: Phytoremediation By the Experimental Systemsmentioning
confidence: 99%
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“…27 Figure 4 illustrates the distribution of predominant copper species in aqueous solution at pH 4.0 for different concentration values.…”
Section: Copper Adsorption Isothermsmentioning
confidence: 99%
“…As shown in Fig.3, the chromium (III) (line A and B) was quantitatively collected at pH range of 3.0-3.5, whereas the anionic species of chromium (VI) was slightly retained on the resin (line C). , and it tends to be hydrolyzed at pH > 4, as the pKa of hydrolysis of Cr (III) is 3.85 (1,20,21), and eventually precipitated as Cr(OH) 3 . Therefore, the pH dependence of the Cr (III) collection on the iminodiacetate resin column at acidic region seems to be due to its low hydrolysis.…”
Section: Effect Of Ph On the Collection Of Chromium Speciesmentioning
confidence: 99%