Minimization of heavy metal containing sludge and recovery of metals from waste water by adsorption using activated diatomite

Y. J. Liou, C. C. Wu, Y. C. Wang, S. Y. Liang, Tsair-Fuh Lin

研究成果: Conference contribution

摘要

In this study, natural diatomite with high specific surface area and high permeability was used as an adsorbent to reduce the heavy metal containing sludge and recover copper from waste water. The original diatomite was wet chemically activated with hydrothermal sodium hydroxyl. After activating, the zero point of charge on diatomite surface increased from pH2 to pH3.5 and the surface potential reduced from-40mV to-60mV in the natural condition. The reducing of surface potential value is beneficial for the adsorption of cations onto the diatomite surface. Under the SEM observations, the original diatomite possesses porous structure clearly and the surface area is up to 50.26 m2/g. By alkali etching, the specific surface area of the diatomite after activation changed to 38.45 m2/g. The adsorption experiments show also that the adsorption capacity for copper in water of activated diatomite was 3 times higher (36.5 mg/g) than the original one (12.6 mg/g). This could be applied to reduce the heavy metal containing sludge in waste water treatment. By using adsorption technology with activated diatomite as post-treatment, the chemical dosage in the precipitation process can be reduced which leads also to the minimization of sludge production. Furthermore, the adsorbed heavy metal such as copper can be recovered by the regeneration of diatomite adsorbent as well.

原文English
主出版物標題100th Annual Conference and Exhibition of the Air and Waste Management Association 2007, ACE 2007
發行者Air and Waste Management Association
頁面2232-2240
頁數9
ISBN(電子)9781604238464
出版狀態Published - 2007 一月 1
事件100th Annual Conference and Exhibition of the Air and Waste Management Association 2007, ACE 2007 - Pittsburgh, United States
持續時間: 2007 六月 262007 六月 29

出版系列

名字100th Annual Conference and Exhibition of the Air and Waste Management Association 2007, ACE 2007
4

Other

Other100th Annual Conference and Exhibition of the Air and Waste Management Association 2007, ACE 2007
國家United States
城市Pittsburgh
期間07-06-2607-06-29

指紋

diatomite
Heavy metals
Wastewater
sludge
heavy metal
adsorption
Adsorption
Recovery
metal
Surface potential
Metals
Copper
Specific surface area
Adsorbents
surface area
Water treatment
copper
Etching
Positive ions
Chemical activation

All Science Journal Classification (ASJC) codes

  • Pollution
  • Water Science and Technology
  • Waste Management and Disposal

引用此文

Liou, Y. J., Wu, C. C., Wang, Y. C., Liang, S. Y., & Lin, T-F. (2007). Minimization of heavy metal containing sludge and recovery of metals from waste water by adsorption using activated diatomite. 於 100th Annual Conference and Exhibition of the Air and Waste Management Association 2007, ACE 2007 (頁 2232-2240). (100th Annual Conference and Exhibition of the Air and Waste Management Association 2007, ACE 2007; 卷 4). Air and Waste Management Association.
Liou, Y. J. ; Wu, C. C. ; Wang, Y. C. ; Liang, S. Y. ; Lin, Tsair-Fuh. / Minimization of heavy metal containing sludge and recovery of metals from waste water by adsorption using activated diatomite. 100th Annual Conference and Exhibition of the Air and Waste Management Association 2007, ACE 2007. Air and Waste Management Association, 2007. 頁 2232-2240 (100th Annual Conference and Exhibition of the Air and Waste Management Association 2007, ACE 2007).
@inproceedings{bf13832cd9c94f07bbd78ff9c55057ea,
title = "Minimization of heavy metal containing sludge and recovery of metals from waste water by adsorption using activated diatomite",
abstract = "In this study, natural diatomite with high specific surface area and high permeability was used as an adsorbent to reduce the heavy metal containing sludge and recover copper from waste water. The original diatomite was wet chemically activated with hydrothermal sodium hydroxyl. After activating, the zero point of charge on diatomite surface increased from pH2 to pH3.5 and the surface potential reduced from-40mV to-60mV in the natural condition. The reducing of surface potential value is beneficial for the adsorption of cations onto the diatomite surface. Under the SEM observations, the original diatomite possesses porous structure clearly and the surface area is up to 50.26 m2/g. By alkali etching, the specific surface area of the diatomite after activation changed to 38.45 m2/g. The adsorption experiments show also that the adsorption capacity for copper in water of activated diatomite was 3 times higher (36.5 mg/g) than the original one (12.6 mg/g). This could be applied to reduce the heavy metal containing sludge in waste water treatment. By using adsorption technology with activated diatomite as post-treatment, the chemical dosage in the precipitation process can be reduced which leads also to the minimization of sludge production. Furthermore, the adsorbed heavy metal such as copper can be recovered by the regeneration of diatomite adsorbent as well.",
author = "Liou, {Y. J.} and Wu, {C. C.} and Wang, {Y. C.} and Liang, {S. Y.} and Tsair-Fuh Lin",
year = "2007",
month = "1",
day = "1",
language = "English",
series = "100th Annual Conference and Exhibition of the Air and Waste Management Association 2007, ACE 2007",
publisher = "Air and Waste Management Association",
pages = "2232--2240",
booktitle = "100th Annual Conference and Exhibition of the Air and Waste Management Association 2007, ACE 2007",
address = "United States",

}

Liou, YJ, Wu, CC, Wang, YC, Liang, SY & Lin, T-F 2007, Minimization of heavy metal containing sludge and recovery of metals from waste water by adsorption using activated diatomite. 於 100th Annual Conference and Exhibition of the Air and Waste Management Association 2007, ACE 2007. 100th Annual Conference and Exhibition of the Air and Waste Management Association 2007, ACE 2007, 卷 4, Air and Waste Management Association, 頁 2232-2240, 100th Annual Conference and Exhibition of the Air and Waste Management Association 2007, ACE 2007, Pittsburgh, United States, 07-06-26.

Minimization of heavy metal containing sludge and recovery of metals from waste water by adsorption using activated diatomite. / Liou, Y. J.; Wu, C. C.; Wang, Y. C.; Liang, S. Y.; Lin, Tsair-Fuh.

100th Annual Conference and Exhibition of the Air and Waste Management Association 2007, ACE 2007. Air and Waste Management Association, 2007. p. 2232-2240 (100th Annual Conference and Exhibition of the Air and Waste Management Association 2007, ACE 2007; 卷 4).

研究成果: Conference contribution

TY - GEN

T1 - Minimization of heavy metal containing sludge and recovery of metals from waste water by adsorption using activated diatomite

AU - Liou, Y. J.

AU - Wu, C. C.

AU - Wang, Y. C.

AU - Liang, S. Y.

AU - Lin, Tsair-Fuh

PY - 2007/1/1

Y1 - 2007/1/1

N2 - In this study, natural diatomite with high specific surface area and high permeability was used as an adsorbent to reduce the heavy metal containing sludge and recover copper from waste water. The original diatomite was wet chemically activated with hydrothermal sodium hydroxyl. After activating, the zero point of charge on diatomite surface increased from pH2 to pH3.5 and the surface potential reduced from-40mV to-60mV in the natural condition. The reducing of surface potential value is beneficial for the adsorption of cations onto the diatomite surface. Under the SEM observations, the original diatomite possesses porous structure clearly and the surface area is up to 50.26 m2/g. By alkali etching, the specific surface area of the diatomite after activation changed to 38.45 m2/g. The adsorption experiments show also that the adsorption capacity for copper in water of activated diatomite was 3 times higher (36.5 mg/g) than the original one (12.6 mg/g). This could be applied to reduce the heavy metal containing sludge in waste water treatment. By using adsorption technology with activated diatomite as post-treatment, the chemical dosage in the precipitation process can be reduced which leads also to the minimization of sludge production. Furthermore, the adsorbed heavy metal such as copper can be recovered by the regeneration of diatomite adsorbent as well.

AB - In this study, natural diatomite with high specific surface area and high permeability was used as an adsorbent to reduce the heavy metal containing sludge and recover copper from waste water. The original diatomite was wet chemically activated with hydrothermal sodium hydroxyl. After activating, the zero point of charge on diatomite surface increased from pH2 to pH3.5 and the surface potential reduced from-40mV to-60mV in the natural condition. The reducing of surface potential value is beneficial for the adsorption of cations onto the diatomite surface. Under the SEM observations, the original diatomite possesses porous structure clearly and the surface area is up to 50.26 m2/g. By alkali etching, the specific surface area of the diatomite after activation changed to 38.45 m2/g. The adsorption experiments show also that the adsorption capacity for copper in water of activated diatomite was 3 times higher (36.5 mg/g) than the original one (12.6 mg/g). This could be applied to reduce the heavy metal containing sludge in waste water treatment. By using adsorption technology with activated diatomite as post-treatment, the chemical dosage in the precipitation process can be reduced which leads also to the minimization of sludge production. Furthermore, the adsorbed heavy metal such as copper can be recovered by the regeneration of diatomite adsorbent as well.

UR - http://www.scopus.com/inward/record.url?scp=84933508743&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84933508743&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:84933508743

T3 - 100th Annual Conference and Exhibition of the Air and Waste Management Association 2007, ACE 2007

SP - 2232

EP - 2240

BT - 100th Annual Conference and Exhibition of the Air and Waste Management Association 2007, ACE 2007

PB - Air and Waste Management Association

ER -

Liou YJ, Wu CC, Wang YC, Liang SY, Lin T-F. Minimization of heavy metal containing sludge and recovery of metals from waste water by adsorption using activated diatomite. 於 100th Annual Conference and Exhibition of the Air and Waste Management Association 2007, ACE 2007. Air and Waste Management Association. 2007. p. 2232-2240. (100th Annual Conference and Exhibition of the Air and Waste Management Association 2007, ACE 2007).