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Citation: YU Lan-Lan, ZHONG Qin. Preparation of Adsorbents from Sewage Sludges and Their Application in Wastewater Treatment[J]. Chinese Journal of Applied Chemistry, ;2006, 23(4): 419-423. shu

Preparation of Adsorbents from Sewage Sludges and Their Application in Wastewater Treatment

YU Lan-Lan ^, ,
ZHONG Qin

1.
School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094

Corresponding author: YU Lan-Lan,
Received Date: 30 July 2005
Available Online: 1 December 2005
Fund Project: 江苏省建设系统科技计划项目(JS200310) (JS200310)

With biochemical sludges from sewage and petrochemistry and surplus sludge as raw materials 3 kinds of adsorbents were prepared via chemical activation. Contrasted with active carbon,the adsorbents made from sludges were studied by SEM,pore characteristics and elemental analysis.The results showed that for all the sludges,the adsorbents made by the complex of ZnCl₂ and H₂SO₄ were better,and the optimum ratio of 5 mol/L ZnCl₂ and 5 mol/L H₂SO₄ solution was 2:1.By application of those adsorbents to the treatment of wastewater and oil-bearing sewage from oilfield,the removal rates of COD and P were better than that for active carbon,and the chromaticity color of the wastewater improved.The adsorbent made from the sludge of petrochemistry was better for the treatment of oil-bearing sewage.
- sludge,
- adsorbent,
- wastewater treatment
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