Copper Adsorption by Mn Oxide-Coated GAC

利用氧化錳覆膜活性碳吸防水中銅離子

范煥榮(Huan-Jung Fan) ； Paul-R. Anderson

《弘光學報》 34期 (1999/10) Pp. 365-386

https://doi.org/10.6615/HAR.199910.34.15

摘要

氧化錳覆膜能有效增加活性碳吸附水中銅離子的能力。本研究利用三種不同活性碳( WVB，APC和TOG) 和三種不間氧化錳鹽( 硝酸錳鹽、硫酸錳鹽和氯酸鹽)來配製九種不同氧化錳覆膜活性碳( Mn oxide coated GAC) 。研究中發現活性碳的種類和不同之錳鹽都會影響氧化錳覆膜的效率:一般來說氧化錳覆膜效率的順序如下: 氯酸錳鹽＞ 硝酸錳鹽＞硫酸錳鹽和APC ＞ WVB ＞ TOG。 本研究中顯示MnWVB對銅的吸附能力比MnAPC和MnTOG高，而且氧化錳活性碳對銅吸附能力和氧化錳覆膜量並沒有正比的關係。此一現象顯示銅之吸附不僅和氧化錳有關同時和活性碳也有關係。從重覆吸附/脫附試驗中顯示，MnGAC可以被再生重覆使用至少六次以上。

關鍵字

氧化錳覆膜補性碳 ； 氧化錳 ； 粒狀活性碳 ； 吸附 ； 銅 ； Freundlich等溫吸附式

並列摘要

Nine composite adsorbents or coated GACs (MnGACs) were prepared by using three GACs (WVB, APC, TOG) and three manganese salts (manganese nitrate (N) , manganese sulfate (S) , and manganese chloride (C)). Both the type of Mn salt and the type of GAC influenced the amount of Mn oxide coatings. In general, the sequences of the amount of coatings were manganese chloride ＞ manganese nitrate ＞ manganese sulfate and APC ＞ WVB ＞ TOG. Cu (II) adsorption capacities of these coated carbons were improved by applied Mn oxide coatings. In general, MnWVB had better Cu (II) adsorption capacities than did MnAPC or MnTOG. However, these results are not in agreement with the amount of Mn coatings on these GACs. From multiple adsorption/regeneration cycle tests, MnGAC can be regenerated and reused through at least six cycles.

並列關鍵字

Mn oxide-coated GAC ； Mn oxides ； granular activated carbon ； adsorption ； copper ； Freundlich isotherm

參考文獻

Stahl R. S. and James B. R. (1991) Zinc sorption by Manganese-Oxide Coated sand as a function of pH, Soil Sci. Soc. Am. J., 55, pp. 1291-1294.

Corapcioglu M. O. and Huang C. P. (1987) The adsorption of heavy metals onto hydrous activated carbon. Wat. Res. 21(9), pp. 1031-1044.

Edwards M. and Benjamin M. M. (1989) Regeneration and reuse of iron hydroxide adsorbents in treatment of metal-bearing wastes. J. Water Pollut. Control Fed. 61, pp. 481-490.

Fan H. and Anderson P. R. (1995) Development and evaluation of Mn oxide-coated camposite adsorbent for the removal and recovery of heavy metals from coal processing wastewater. USDOE DE-EG22- 93PC93207 Final Report.

Fan, H. and Anderson, P. R.(1995) “Evaluation of Mn oxide-coated composite adsorbent for the removal and recovery of heavy metals from metal contaminated wastewater". Proceedings of the 50th Purdue Industrial Waste Conference, Ann Arbor Press, Ann Arbor, MI, pp. 217-226 (1995)