{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,9]],"date-time":"2025-10-09T01:09:42Z","timestamp":1759972182628,"version":"build-2065373602"},"reference-count":22,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[1981,1,1]],"date-time":"1981-01-01T00:00:00Z","timestamp":347155200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J Americ Oil Chem Soc"],"published-print":{"date-parts":[[1981,1]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Investigations were made to determine the removals of calcium, copper, chromium, nickel, lead and zinc from water and waste water samples by different concentrations of zeolite type A and with zeolite type A forms where sodium had been partially exchanged for calcium. Metal concentrations were determined after a range of different treatments such as filtration, sedimentation in columns and centrifugation.<\/jats:p><jats:p>The results indicated that the rate of removal of calcium hardness from samples was a function of the calcium hardness present in the samples. High concentrations of zeolite removed all the metals except chromium from water, but only lead, zinc and cadmium from synthetic waste water samples. In water samples containing cadmium, nickel, copper and zinc, an increase in the calcium exchanged for sodium in the zeolite resulted in a decrease in the percentage of nickel removed from suspension on mixing. At lower environmental concentrations, zeolite type A had no effect on the removal of metals from raw waste water samples.<\/jats:p>","DOI":"10.1007\/bf02666060","type":"journal-article","created":{"date-parts":[[2007,7,16]],"date-time":"2007-07-16T17:56:12Z","timestamp":1184608572000},"page":"81-85","source":"Crossref","is-referenced-by-count":4,"title":["The influence of zeolite type A on metal concentrations in water and waste water"],"prefix":"10.1002","volume":"58","author":[{"given":"L. A.","family":"Obeng","sequence":"first","affiliation":[{"name":"Public Health Engineering Laboratory Imperial College London"}]},{"given":"M. J. T.","family":"Carrondo","sequence":"additional","affiliation":[{"name":"Public Health Engineering Laboratory Imperial College London"}]},{"given":"R.","family":"Perry","sequence":"additional","affiliation":[{"name":"Public Health Engineering Laboratory Imperial College London"}]},{"given":"J. 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