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题名: Fabrication and evaluation of an attapulgite membrane as the filter for recycling blowdown water from industrial boilers
作者: Fan, Baomin1; Hao, Hua2; Guo, Anru3; Yang, Ruping3
关键词: attapulgite ; ceramic membrane ; continuous blowdown water ; industrial boiler ; make-up water
刊名: JOURNAL OF WATER REUSE AND DESALINATION
发表日期: 2016-09-01
卷: 6, 期:3, 页:399-412
收录类别: SCI
英文摘要: Continuous blowdown water (CBW) from industrial boilers is of great quantity and energy, and therefore worth recycling. According to the data from a long period of monitoring, carbonate and sulfate were documented as the main contaminants in CBW. Herein, an attapulgite (ATP) membrane was prepared on a macroporous Al2O3 support through solid state sintering. The prepared membrane (attapulgite membrane (ATM)) was characterized by mercury porosimetry, scanning electron microscope, X-ray diffraction, and permselectivity analysis in dead-end mode. The optimal sintering temperature was 800 degrees C based on the morphology of the sintered active layer and its adhesive strength with support. The active layer exhibited a pore size distribution concentrated on 12.7 nm with a thickness of about 80 mu m. In addition, crystal structures of ATP were retained in powder form after sintering. ATM obtained a pure water permeability of 1,411.87 Lm(-2)h(-1)MPa(-1) with the effective retention of carbonate and sulfate through electrical-related interactions. Several ATM filters were also developed and mounted on the boiler blowdown pipe, which had a high rejection rate of alkalinity and dissolved solids in CBW. The volume of wastewater emitted from the low-pressure boiler was reduced, since the filtrate could be recycled as part of the make-up water.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.iccas.ac.cn/handle/121111/35414
Appears in Collections:其它_期刊论文

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作者单位: 1.Beijing Technol & Business Univ, Dept Mat Sci & Engn, Beijing 100048, Peoples R China
2.Chinese Acad Sci, Inst Chem, Beijing 100190, Peoples R China
3.China Aerosp Sci & Technol Corp, Aerosp Res Inst Mat & Proc Technol, Beijing 100076, Peoples R China
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