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首页> 外文会议>International Symposium on Eco-Materials Processing amp; Design; 20060108-11; Chengdu(CN) >Effect of Hydrothermal Conditions on the Cation Exchange Capacity of MSWI Fly Ash
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Effect of Hydrothermal Conditions on the Cation Exchange Capacity of MSWI Fly Ash

机译：水热条件对MSWI粉煤灰阳离子交换容量的影响

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摘要

In this study, we studied to find the most suitable condition for the preparation of adsorbent by hydrothermal treatment of fly ash from the municipal solid waste incinerator (MSWI). There are many variables that affect the adsorptive characteristics in our study. With the variation of which discussed the effect such as the concentration of NaOH, reaction temperature, reaction time, solid/liquid ratio, and so on. The phase of adsorbent, its morphology and cation exchange capacity (CEC) were analyzed to evaluate their effects. The phase of adsorbent after treatment was identified by X-ray diffraction (XRD), the morphology was examined by scanning electron microscopy (SEM), and the CEC was analyzed by the ammonium acetate method. The maximum CEC value was obtained under the condition of 3N NaOH, 100℃ of reaction temperature, 12 hr of reaction time, and 1:10 of solid/liquid ratio. The CEC was 68 meq/100g in this condition, which was 8 times the amount of raw fly ash.
机译：在这项研究中，我们研究找到了通过水热处理市政固体废物焚化炉（MSWI）中的粉煤灰制备吸附剂的最合适条件。在我们的研究中，有许多变量会影响吸附特性。通过其中的变化讨论了诸如NaOH浓度，反应温度，反应时间，固/液比等的影响。分析了吸附剂的相，其形态和阳离子交换容量（CEC）以评估其效果。通过X射线衍射（XRD）鉴定处理后的吸附剂的相，通过扫描电子显微镜（SEM）检查形态，并通过乙酸铵法分析CEC。在3N NaOH，100℃反应温度，12小时反应时间和1:10固/液比的条件下获得最大CEC值。在这种条件下，CEC为68 meq / 100g，是原粉煤灰量的8倍。

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