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Author (up) Chen, M.; Li, L.; Grace, J.; Tazaki, K.; Shiraki, K.; Asada, R.; Watanabe, H. url  openurl
  Title Remediation of acid rock drainage by regenerable natural clinoptilolite Type Journal Article
  Year 2007 Publication Water, Air, Soil Pollut. Abbreviated Journal  
  Volume 180 Issue 1-4 Pages 11-27  
  Keywords mine water treatment  
  Abstract Clinoptilolite is investigated as a possible regenerable sorbent for acid rock drainage based on its adsorption capacity for Zn, adsorption kinetics, effect of pH, and regeneration performance. Adsorption of Zn ions depends on the initial concentration and pH. Adsorption/Desorption of Zn reached 75% of capacity after 1-2 h. Desorption depended on pH, with an optimum range of 2.5 to 4.0. The rank of desorption effectiveness was EDTAEDTA > NaCl > NaNO3 > NaOAc > NaHCO3 > Na2CO3 > NaOH > CeCa(OH)(2). For cyclic absorption/desorption, adsorption remained satisfactory for six to nine regenerations with EDTA and NaCl, respectively. The crystallinity and morphology of clinoptilolite remained intact following 10 regeneration cycles. Clinoptilolite appears to be promising for ARD leachate treatment, with significant potential advantages relative to current treatment systems.  
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  Series Volume Series Issue Edition  
  ISSN 0049-6979 ISBN Medium  
  Area Expedition Conference  
  Notes Mar; Remediation of acid rock drainage by regenerable natural clinoptilolite; Wos:000244030000003; Times Cited: 0; ISI Web of Science Approved no  
  Call Number CBU @ c.wolke @ 7319 Serial 17  
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