Dongmei Jia

Publications (3)1.77 Total impact

• Article: Adsorption of glyphosate on resin supported by hydrated iron oxide: equilibrium and kinetic studies.

  Dongmei Jia, Chao Zhou, Changhai Li
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  ABSTRACT: Hydrated iron oxide supported on resin (D301) was prepared as a new sorbent for the removal of glyphosate from wastewater. Batch adsorption studies were performed on glyphosate aqueous solutions with different initial glyphosate concentrations and temperatures. Experimental data were analyzed using the Langmuir and Freundlich isotherms, and the adsorption data were best fit to the Langmuir isotherm model. The thermodynamic parameters AG, AH, and AS also were calculated for the adsorption processes. Adsorption rate constants were determined using the pseudo-first-order and pseudo-second-order rate equations and Kannan-Sundaram intraparticle diffusion models. Adsorption of glyphosate clearly followed the pseudo-second-order model and was controlled by both film diffusion and intraparticle diffusion.
  Water Environment Research 09/2011; 83(9):784-90. · 0.88 Impact Factor
• Article: Studies on the Adsorption of 2-Naphthalenesulfonic Acid on Basic Resin from Effluents

  Dongmei Jia, Changhai Li, Banglong Zhao, Shuai Sun
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  ABSTRACT: The adsorption reaction of 2-naphthalenesulfonic acid with the strong basic resin N201 was investigated experimentally with varying parameters (viz., the effects of pH, temperature, contact time, sodium sulfate, and fixed-bed column runs) and compared with the weakly basic resin D301. Results showed that the optimum initial pH for 2-naphthalenesulfonic acid adsorption by N201 was 2.4, and the equilibration time required was 2.5 h. The three single-component isotherms were analyzed with the Langmuir, Freundlich, and Redlich−Peterson equations. The Redlich−Peterson equation gave the lowest errors by use of the sum of the squares of the errors. The thermodynamic parameters (ΔG, ΔH, and ΔS) were also determined, and the adsorption process is more favored at low temperatures. The kinetics followed a pseudo-second-order rate equation very well. However, a dramatic decrease in adsorption capacity was observed for both resins upon addition of Na2SO4 into the 2-naphthalenesulfonic acid solution. The adsorption and stripping curves of 2-naphthalenesulfonic acid onto two resins was explored in fixed-bed column experiments. It was found that the dynamic adsorption capacity of N201 was higher than that of D301.
  11/2010;
• Article: Heat stroke deaths caused by electric blankets: case report and review of the literature.

  Yiwu Zhou, Ling Li, Liang Liu, Dongmei Jia, Xiang Zhang, David R Fowler, Xiaohu Xu
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  ABSTRACT: Heat stroke is the most serious and potentially life-threatening condition of the heat-related illnesses. Heat stroke deaths caused by electric blanket are rarely reported. In this paper, we report 2 cases of fatal heat stroke caused by overheating from electric blankets in winter. One was a 41-year-old man who was found unresponsive in bed on an electric blanket. His wife shared the same bed with him and was found unconscious. The wife's axillary temperature was 40 degrees C (104 degrees C) when she was admitted to the hospital. She fully recovered after medical treatment. The husband was pronounced dead at scene, with rectal temperature at 41.2 degrees C (106.2 degrees C). The other was a 13-year-old girl who was found dead in bed on an electric blanket, with rectal temperature at 41 degrees C (105.8 degrees F). The literature is reviewed, and the pertinent findings, including scene investigations, postmortem examination, the risk and mechanism of fatal heat stroke caused by using electric blanket, are discussed.
  American Journal of Forensic Medicine & Pathology 01/2007; 27(4):324-7. · 0.88 Impact Factor