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1Removal of fluoride from aqueous solution onto Zr-loaded garlic peel (Zr-GP) particles显示文摘Garlic peel,as the raw material,was modified by loading with zirconium(IV),exhibiting quite good uptaking behaviour for fluoride anion.The adsorption experiments were carried out in batch shaking vessels,and the process was strongly dependent on the pH value.The adsorption fits Langmuir model well,and the maximum adsorption capacities at equilibrium pH 2 and 6 are evaluated to be 1.10 and 0.89 mol(fluoride)/kg of Zr-loaded garlic peel gel,respectively.The evaluation of effects of coexisting anions such as nitrate,sulfate and phosphate shows that nitrate and sulfate have no negative effect on the adsorption of fluoride,while phosphate has a little effect.Adsorption kinetics of fluoride is well described by pseudo-second-order rate equation,and the corresponding adsorption rate constant is calculated to be 3.25×10?3 g/(mg·min).黄凯 邵久刚 朱鸿民 Inoue Katsutoshi 2011Journal of Central South University2011,18,5:1
2混凝土强度对喜利得连接件性能影响的试验研究显示文摘为探讨混凝土强度对喜利得抗剪连接件的工作性能影响,通过推出试验测出了在普通强度混凝土和高强度混凝土中连接件的荷载-位移曲线,并观察其破坏模式.分析得出混凝土强度变化对喜利得连接件强度影响很小,但对其破坏模式有显著影响.给出了喜利得连接件的设计强度,并验证了喜利得连接件的荷载-位移关系式,对钢-混凝土组合梁的设计具有实用参考价值.林洋 武振宇 张素梅 2004哈尔滨工业大学学报2004,36,4:1
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