Morphology and electrical conductivity of PACS
  • 【DOI】

    10.3321/j.issn:1001-0742.2000.03.011

  • 【摘要】

    Polyaluminium chlorides with sulfate ion(PACS) were prepared by using AlCl3· 6H2O, Al(SO4 )3· 18H2O and Na2CO3 as raw materials. The effects of basicity (r), Al3 +/SO42- molar ratio and aging time on ... 展开>>Polyaluminium chlorides with sulfate ion(PACS) were prepared by using AlCl3· 6H2O, Al(SO4 )3· 18H2O and Na2CO3 as raw materials. The effects of basicity (r), Al3 +/SO42- molar ratio and aging time on the morphology of PACS were observed by transmission electrical microscope. The influence of aging time on charge neutralization and coagulation effect of PACS was studied.The effects of basicity (r), Al3+/SO42- molar ratio and aging time on the electrical conductivity of PACS solution were also investigated. The experimental results show that the degree of polymerization of polyaluminium chloride(PAC) increases when SO42-ion is added. The higher the basicity(r) and the longer the aging time, the larger the size of polymer PACS. The ability of PACS neutralizing the charge on Kaolinite decreases with the increase of aging time. The electrical conductivity of PACS solution (the concentration of Al3+ ion is 0.18 mol/L) with different aging time is the function of the basicity and Al3 +/SO42- molar ratios and has its maximum at r = 0.5 and Al3+/SO42- = 12. 收起<<

  • 【作者】

  • 【作者单位】

    Department of Environmental Engineering/Environmental Monitoring Station of Huaiyin/Department of Environmental Engineering

  • 【刊期】

    环境科学学报(英文版) ISTIC SCI 2000年3期

  • 【关键词】

    coagulant PACS  morphology  transmission electron microscope  electrical conductivity  coagulation