Preparation method of rare earth-doped hydrated manganese oxide adsorbent
The invention discloses a preparation method of a rare earth-doped hydrated manganese oxide adsorbent. The preparation method comprises the following steps: firstly preparing a mixed liquid I from a MnSO4.H2O solution with the molar concentration of 2%-5% and a NaCl solution with the molar concentra...
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| creator | SHAO LI'NAN YANG XIAOSONG CHEN GUOQIANG ZHAO SHAOKANG LIU FENGBIAO ZHENG XI LIU YANLI HU JIANLONG |
| description | The invention discloses a preparation method of a rare earth-doped hydrated manganese oxide adsorbent. The preparation method comprises the following steps: firstly preparing a mixed liquid I from a MnSO4.H2O solution with the molar concentration of 2%-5% and a NaCl solution with the molar concentration of 2%-10%, and adding a 0.1%-0.5% KMnO4 solution into the mixed liquid I so as to prepare a hydrated manganese dioxide seed crystal mixed liquid; carrying out rare earth-doped crystal particle amplification on the hydrated manganese dioxide seed crystal mixed liquid; carrying out precipitate size grading on a rare earth-doped hydrated manganese oxide mixed liquid, and carrying out filter pressing on precipitates with particle sizes larger than 10 microns so as to obtain adsorbent filter cake; drying the adsorbent filter cake at 50-75 DEG C for 1.5-3 hours until no obvious moisture is left on the surface of the adsorbent filter cake, thereby obtaining the finished adsorbent. The adsorbent is high in adsorption |
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The preparation method comprises the following steps: firstly preparing a mixed liquid I from a MnSO4.H2O solution with the molar concentration of 2%-5% and a NaCl solution with the molar concentration of 2%-10%, and adding a 0.1%-0.5% KMnO4 solution into the mixed liquid I so as to prepare a hydrated manganese dioxide seed crystal mixed liquid; carrying out rare earth-doped crystal particle amplification on the hydrated manganese dioxide seed crystal mixed liquid; carrying out precipitate size grading on a rare earth-doped hydrated manganese oxide mixed liquid, and carrying out filter pressing on precipitates with particle sizes larger than 10 microns so as to obtain adsorbent filter cake; drying the adsorbent filter cake at 50-75 DEG C for 1.5-3 hours until no obvious moisture is left on the surface of the adsorbent filter cake, thereby obtaining the finished adsorbent. 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The preparation method comprises the following steps: firstly preparing a mixed liquid I from a MnSO4.H2O solution with the molar concentration of 2%-5% and a NaCl solution with the molar concentration of 2%-10%, and adding a 0.1%-0.5% KMnO4 solution into the mixed liquid I so as to prepare a hydrated manganese dioxide seed crystal mixed liquid; carrying out rare earth-doped crystal particle amplification on the hydrated manganese dioxide seed crystal mixed liquid; carrying out precipitate size grading on a rare earth-doped hydrated manganese oxide mixed liquid, and carrying out filter pressing on precipitates with particle sizes larger than 10 microns so as to obtain adsorbent filter cake; drying the adsorbent filter cake at 50-75 DEG C for 1.5-3 hours until no obvious moisture is left on the surface of the adsorbent filter cake, thereby obtaining the finished adsorbent. The adsorbent is high in adsorption</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY METALLURGY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR RELEVANT APPARATUS TRANSPORTING TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE |
| title | Preparation method of rare earth-doped hydrated manganese oxide adsorbent |
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