PREPARATION OF ZEOLITIC ADSORBENTS FROM WASTE COAL FLY-ASH

被引：15

作者：

SHIN, BS ^{[1
]}

LEE, SO ^{[1
]}

KOOK, NP ^{[1
]}

机构：

[1] CHONNAM NATL UNIV,DEPT MINERAL & ENERGY ENGN,KWANGJU 500757,SOUTH KOREA

来源：

KOREAN JOURNAL OF CHEMICAL ENGINEERING | 1995年 / 12卷 / 03期

关键词：

ZEOLITIC ADSORBENTS; MMS; CEC; COAL FLY ASH; WASTE WATER TREATMENT;

D O I：

10.1007/BF02705768

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Power plants burning coal generate a large amount of fly ash as waste matter. The objective of this study is to produce zeolitic adsorbents that possesses high adsorptive capacity for toxic cations. The sample was first pretreated with a High Intensity Magnetic Separator for the removal of iron and magnetic materials (mainly Fe2O3 and TiO2). The zeolitic adsorbents were prepared under the various conditions of NaOH concentration (1-5 N), reaction time from 3 to 96 hours and at the various temperatures of 60, 80 and 100 degrees C. The results of the experiment showed that the coal fly ash should be synthesized with 4 N NaOH for 48 hours at 100 degrees C in order to have good adsorptive capacity. The zeolitic adsorbents showed higher cation exchange capacity values than the natural zeolite in removing NH4+, Pb2+, Ca2+ and Cd2+ ions.

引用

页码：352 / 357

页数：6

共 8 条

[1] Fanor M., Fabio R., Ligia S., Jaime E., Jose R., Fernandez, New Perspectives for Coal Ash Utilization: Synthesis of Zeolitic Materials, Fuel, 69, (1990)
[2] Fisher G.L., Natusch D.F.S., In Analytical Methods for Coal and Coal Products, (1978)
[3] Falcone S.K., Schobert H.H., Rindt D.K., Braun S., Am. Chem. Soc. Div. Fuel Chem. Prepr., 29, 4, (1984)
[4] Jorgensen S.E., Barkaes K., Ammonium Removal by Use of Clinoptilolite, Water Research, 10, (1974)
[5] Munson R.A., Sheppard R.A., Natural Zeolite: Their Properties, Occurrences and Uses, Minerals Sci. Eng., 6, 1, (1974)
[6] Natush D.F.S., Taylor D.R., Environmental Effects of Western Coal Combution: Part IV, (1980)
[7] Shin B.S., Choi K.S., Kim J.U., A Study on the Removal of Ammonia in Waste Water by Zeolite Mineral, J of the Kor. Inst, of Mineral & Mining Eng., 24, 3, (1987)
[8] Shin B.S., Jung C.J., Choi S.J., Oh J.G., Choi K.S., A Study on the Removal of Heavy Metal Ions from Waste Water by Natural Zeolites, J. of the Kor. Inst, of Mineral & Mining Eng, 19, 2, (1982)

← 1 →