1 / 16

Reporter ： Weikang Zhang Date ： 2012-12-11

Tianjin University. Adsorption removal of phosphate from water by model-La/Al zeolite adsorbents. Reporter ： Weikang Zhang Date ： 2012-12-11. Contents. Background. Current situation. The treatment technologies presently available for phosphorus removal include: biological treatment

alexa
Download Presentation

Reporter ： Weikang Zhang Date ： 2012-12-11

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Tianjin University Adsorption removal of phosphate from water by model-La/Al zeolite adsorbents Reporter：Weikang Zhang Date：2012-12-11

  2. Contents

  3. Background

  4. Current situation • The treatment technologies presently available for phosphorus removal include: • biological treatment • chemical precipitation • ion exchange • Adsorption Most of these approaches are generally more suitable for the removal of phosphate of higher concentration.

  5. Adsorption is recommended as one of the most effective removal processes for the low concentrations of phosphorus. • Many types of adsorbents for phosphate removal have been investigated.

  6. Main work • Materical characterization • Phosphate adsorption experiment • Adsorption isotherm • Phosphate adsorption kinetics • Influence on adsorption of phosphate • Stability • Regeneration studies

  7. Adsorption isotherm and kinetics

  8. 1mol/L NH4Cl 100ml Natrual zeolite 50g 25 ℃ 12h Dry 100 ℃ Calcined 550℃8h Washing with deionized water 3.44gLaCl3·7H2O 2.61gAl(NO3)3·6H2O 20ml deionized water 25℃ impregnated24h Dry 80 ℃ Calcined 500℃ 2h La/Al-zeo Catalyst Experiment Figure 1. Process of impregnation method to prepare La/Al-zeo catalyst

  9. Figure 2.1ppm 100ml, contact time is 12h,0.1g

  10. Adsorption kinetics Figure 3. initial concentration is 5ppm, 200ml, 0.2g

  11. Adsorption isotherm Figure 4. various initial concentrations 100ml,50mg, contact time is 48h

  12. 10mg/L solution Fresh absorbent 0.8mol/L NaCl PH=10.5 25 ℃ 25 ℃ Impregnated3.5h Dry25℃ 500℃ Calcined 1h Washing with deionized water regenerated absorbent Next work • Regeneration studies

  13. Thanks for your attention

More Related