研究了用D301樹脂吸附巖鹽礦提鉀母液中溴離子的可能性,考察了吸附柱動(dòng)態(tài)吸附過程中原料液溴離子初始濃度、床層高度及進(jìn)料流速等因素的影響。結(jié)果表明,增加原料液溴離子初始濃度或降低進(jìn)料流速能提高樹脂單位飽和吸附量。當(dāng)原料液溴離子初始濃度從1000 mg/L升至4000 mg/L時(shí),樹脂單位飽和吸附量從1.8 mg/L增至6.4 mg/mL。增加床層高度或降低進(jìn)料流速會(huì)延長(zhǎng)動(dòng)態(tài)吸附突破時(shí)間及飽和時(shí)間,而原料液溴離子初始濃度對(duì)其沒有影響。應(yīng)用了Bed Depth Service Time（BDST）,Thomas,Yoon-Nelson,Wolborska及Modifieddoseresponse（MDR）等五種吸附模型對(duì)動(dòng)態(tài)吸附過程進(jìn)行擬合,其中MDR模型的擬合效果最佳。D301樹脂可用于從含有高濃度氯離子的提鉀母液中提取溴離子。 

【文章來源】：過程工程學(xué)報(bào). 2020,20(06)北大核心CSCD

【文章頁(yè)數(shù)】：12 頁(yè)

【文章目錄】：
1 INTRODUCTION
2 MATERIALS AND METHODS
    2.1 Materials
    2.2 Batch Adsorption
    2.3 Column Studies
3 THEORY
    3.1 Adsorption Isotherm
    3.2 Breakthrough Curves
    3.3 Fixed-bed Column Models
        3.3.1 Bed depth service time(BDST)model
        3.3.2 Thomas model
        3.3.3 Yoon-Nelson model
        3.3.4 Wolborska model
        3.3.5 Modified dose response(MDR)model
4 RESULTS AND DISCUSSION
    4.1 Equilibrium Adsorption
    4.2 Effect of Initial Adsorbate Concentration
    4.3 Effect of Bed Length
    4.4 Effect of Flow Rate
    4.5 Column Modelling
        4.5.1 Analysis using BDST,Thomas,and Yoon-Nelson models
        4.5.2 Analysis using Wolborska model
        4.5.3 Analysis using MDR model
5 CONCLUSION


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