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[Mechanism and promotion effect of K+ on yield of Fe(VI)].
Huan Jing Ke Xue. 2008 Mar; 29(3):677-82.HJ

Abstract

The mechanism and promotion effects of K+ on the yield of Fe(VI) were studied during the reaction of forming ferrate. The experiment results showed that K+ is far better than Na+ for the preparation of Fe(VI) at temperatures higher than 50 degrees C. The optimal temperature for the preparation of Fe(VI) with K+ is 65 degrees C. During the reaction, the yield of ferrate increases with the concentration of K+, and the promotion effect of K+ is obviously with ferric nitrate dosage increase. The Fe(VI) concentration prepared with 4.4 mol/L KOH is 0.05 mol/L at 85 g/L ferric nitrate; and which achieves 0.15 mol/L when added 2 mol/L K+. The promotion effect of K+ on the yield of ferrate is remarkable when ferric nitrate dosage is higher than 75 g/L, reaction temperature is below 55 degrees C and ClO(-) concentration is lower than 1.16 mol/L. The K+ can substitute for partly alkalinity and reduce the concentration of OH(-) in the reaction solution. During the reaction, the K+ can enwrap around FeO4(2-) that can reduce the contact between Fe(3+) and FeO4(2-), and decrease the catalysis effect of Fe(3+) on FeO4(2-). At the same time, K+ can react with FeO4(2-) to form solid K4FeO4, whichwill lower the Fe(VI) concentration, decrease the decomposition rate of Fe(VI), enhance the stability and improve the yield of Fe(VI).

Authors+Show Affiliations

School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China. zyphit@163.comNo affiliation info availableNo affiliation info available

Pub Type(s)

English Abstract
Journal Article

Language

chi

PubMed ID

18649527

Citation

Zhang, Yan-Ping, et al. "[Mechanism and Promotion Effect of K+ On Yield of Fe(VI)]." Huan Jing Ke Xue= Huanjing Kexue, vol. 29, no. 3, 2008, pp. 677-82.
Zhang YP, Xu GR, Li GB. [Mechanism and promotion effect of K+ on yield of Fe(VI)]. Huan Jing Ke Xue. 2008;29(3):677-82.
Zhang, Y. P., Xu, G. R., & Li, G. B. (2008). [Mechanism and promotion effect of K+ on yield of Fe(VI)]. Huan Jing Ke Xue= Huanjing Kexue, 29(3), 677-82.
Zhang YP, Xu GR, Li GB. [Mechanism and Promotion Effect of K+ On Yield of Fe(VI)]. Huan Jing Ke Xue. 2008;29(3):677-82. PubMed PMID: 18649527.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - [Mechanism and promotion effect of K+ on yield of Fe(VI)]. AU - Zhang,Yan-Ping, AU - Xu,Guo-Ren, AU - Li,Gui-Bai, PY - 2008/7/25/pubmed PY - 2009/1/13/medline PY - 2008/7/25/entrez SP - 677 EP - 82 JF - Huan jing ke xue= Huanjing kexue JO - Huan Jing Ke Xue VL - 29 IS - 3 N2 - The mechanism and promotion effects of K+ on the yield of Fe(VI) were studied during the reaction of forming ferrate. The experiment results showed that K+ is far better than Na+ for the preparation of Fe(VI) at temperatures higher than 50 degrees C. The optimal temperature for the preparation of Fe(VI) with K+ is 65 degrees C. During the reaction, the yield of ferrate increases with the concentration of K+, and the promotion effect of K+ is obviously with ferric nitrate dosage increase. The Fe(VI) concentration prepared with 4.4 mol/L KOH is 0.05 mol/L at 85 g/L ferric nitrate; and which achieves 0.15 mol/L when added 2 mol/L K+. The promotion effect of K+ on the yield of ferrate is remarkable when ferric nitrate dosage is higher than 75 g/L, reaction temperature is below 55 degrees C and ClO(-) concentration is lower than 1.16 mol/L. The K+ can substitute for partly alkalinity and reduce the concentration of OH(-) in the reaction solution. During the reaction, the K+ can enwrap around FeO4(2-) that can reduce the contact between Fe(3+) and FeO4(2-), and decrease the catalysis effect of Fe(3+) on FeO4(2-). At the same time, K+ can react with FeO4(2-) to form solid K4FeO4, whichwill lower the Fe(VI) concentration, decrease the decomposition rate of Fe(VI), enhance the stability and improve the yield of Fe(VI). SN - 0250-3301 UR - https://www.unboundmedicine.com/medline/citation/18649527/[Mechanism_and_promotion_effect_of_K+_on_yield_of_Fe_VI_]_ L2 - https://medlineplus.gov/iron.html DB - PRIME DP - Unbound Medicine ER -
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