甲醛聚糖

Chitosan Schiff base is the product of concentration reaction between chitosan and benzaldehyde.

壳聚糖希夫碱是壳聚糖与苯甲醛进行缩合反应的产物。

Optimized the preparation of chitosan hydrogel technological conditions, and the result indicated that: the hydrogel with best quality can be gotten, with the chitosan quantity 1 g, the formaldehydevolume 0.2 mL, the gelatination temperature 50℃.

通过试验优化制备壳聚糖水凝胶的工艺条件，试验结果表明：当壳聚糖量为1 g，甲醛体积为0.2 mL，凝胶化温度为50℃时，制备得到的水凝胶质量优良。

The adsorbability, adsorption kinetics and adsorption thermodynamics to acid green 6B, direct fast yellow RL and disperse blue 56 by the new resin were studied in this paper.

用本实验制备的甲醛环氧氯丙烷交联壳聚糖树脂对酸性绿6B、直接耐晒黄RL、分散蓝56三种染料进行吸附性能、吸附动力学和热力学研究。

Its high-capacity and strong-acid-resistance were proved. In the acid condition, the adsorption efficiency to acide green 6B and direct fast yellow RL reached above 90%. Through the adsorption rate curve on adsorption behavior of the three dyes, they were all according with pseudo-secondary adsorption rate curve. The rate constant of adsorption increased with increasing temperature. Through the adsorption isotherm of the three dyes, acide green 6B and direct fast yellow RL were according with Langmuir equation, while disperse blue 56 was according with Freundlich equation. The adsorption behavior was an endothermic process. Entropy was increasing during the adsorption. So raising temperature was in favor of adsorption.

结果表明，甲醛环氧氯丙烷交联壳聚糖对染料具有较强的吸附性能和耐酸性能，在酸性条件下，对酸性绿6B和直接耐晒黄RL的吸附效率达90％以上；拟合甲醛环氧氯丙烷交联壳聚糖对三种染料的吸附速率曲线，发现该吸附行为符合拟二级吸附速率曲线，其吸附速率常数随温度的升高而增大；通过测定不同温度下甲醛环氧氯丙烷交联壳聚糖吸附三种染料的吸附等温线表明，甲醛环氧氯丙烷交联壳聚糖对酸性绿6B和直接耐晒黄RL的吸附符合Langmuir方程，而对分散蓝56的吸附符合Freundlich方程，甲醛环氧氯丙烷交联壳聚糖对染料的吸附是一个吸热过程，吸附后体系熵增加，升温有利于吸附。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。