Production of specific Mg(OH)2 granules by modifying crystallization conditions

Three methods were employed to produce specific Mg(OH)2 (MH) granules with improved filtration efficiency, using crystallization technique. A buffer solution was utilized to improve the crystallization of MH, the spherical assembly composed of both nanosheets and hollow microspheres was obtained. A hydrothermal treatment of amorphous MH led to MH hexagonal nanoplates. In a directing growth, SO42− ions were found to strongly improve the crystallization of MH. In the current work, one-dimensional 5Mg(OH)2·MgSO4 · 2H2O whiskers and MH microspheres can be crystallized on a large scale. The filtration tests show that these specific MH granules have improved filtration properties. The current work opens up a new avenue for the production of MH granules, and the optimal filtration efficiency offers a significant control over the quality of MH-type products.

Three methods were employed to produce specific Mg(OH)2 (MH) granules with improved filtration efficiency, on the basis of crystallization process. The improvement of filtration efficiency optimizes dynamic manipulation, and the optimal filtration efficiency offers a significant control over the quality of MH products.Figure optionsDownload as PowerPoint slide