Adsortion of dichromate ions on the cellulose/ ZrO2.nH2O composite prepared by the methods of conventional precipitation and homogeneos solution precipitation

[摘要] This article describes the preparation and characterization of the cellulose/ hydrated zirconium oxide composites prepared by conventional precipitation (PC) and homogeneous solution precipitation (PSH) methods. The composite obtained by the PC method was prepared by using an ammonia solution as the precipitating agent, while the composite obtained by the PSH method was prepared by using urea as the precipitating agent. The adsorption of dichromate ions on the composites was studied using factorial design 23. The variables were: initial concentration, agitation time and mass of the composite. The data obtained agree better for the composite obtained by the PC method.

[学科分类] 化学（综合）

[关键词] adsorption of dichromate ions;homogeneous solution precipitation;conventional precipitation.