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  • Adsorption and photodegradation of N, N-dimethylacetamide on suspended sediment particles in water.

    Author(s) : Zhang HongJiang JinYuanZhou YueXiChen XueMin

    Author Affiliation : Department of Environment and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China.

    Author Email : zh8115@163.comzhouyuexi@263.net

    Journal article : Research of Environmental Sciences 2009 Vol.22 No.8 pp.902-906 ref.16

    Abstract : Adsorption and photodegradation of N, N-dimethylacetamide (DMAC) on suspended sediment particles in water and their influence were studied experimentally. The results demonstrate that DMAC adsorption on sediment particles is in accordance with both the Langmuir and Freundlich models. The photolytic half-life of DMAC in water is longer than 8 h under different UV illumination intensities. Photodegradation of DMAC in water increases with increasing UV illumination intensity. The photodegradation rate of DMAC is higher with higher initial mass concentration under the same UV illumination intensity in the lower mass concentration range (<20 mg/L). The DMAC photodegradation rate increases with the increase of pH in natural pH conditions of 6-9, and decreases remarkably with coexistence of humic acid in water.

    ISSN : 1001-6929

    URL : http://www.hjkxyj.org.cn

    Record Number : 20093251029

    Publisher : China Environmental Science

    Location of publication : Beijing

    Country of publication : China

    Language of text : Chinese

    Language of summary : English

    Indexing terms for this abstract:

    Descriptor(s) : acetamide, adsorption, humic acids, illumination, particles, pH, photolysis, pollutants, sediment, sorption isotherms, suspended solids, water pollution

    Identifier(s) : hydrogen ion concentration, photodegradation, photolytic degradation, potential of hydrogen