HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Abstract Full Text Free Full Text (PDF) Free Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Similar articles in ISI Web of Science Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via ISI Web of Science (23) Citing Articles via Google Scholar Google Scholar Articles by Oste, L. A. Articles by Van Riemsdijk, W. H. Search for Related Content PubMed PubMed Citation Articles by Oste, L. A. Articles by Van Riemsdijk, W. H. GeoRef GeoRef Citation Agricola Articles by Oste, L. A. Articles by Van Riemsdijk, W. H. Related Collections Humic Substances Heavy Metals Soil Pollution Soil Chemistry

Metal Immobilization in Soils Using Synthetic Zeolites

Leonard A. Oste, Theo M. Lexmond and Willem H. Van Riemsdijk^*

Department of Environmental Sciences, Wageningen Univ., P.O. Box 8005, 6700 EC Wageningen, the Netherlands

View larger version (17K): [in a new window]   Fig. 1. Aluminum released by adding HNO3 to a zeolite suspension.

View larger version (12K): [in a new window]   Fig. 2. Adsorption of Zn (a) and Cd (b) on zeolite A(PQ) at three pH levels.

View larger version (13K): [in a new window]   Fig. 3. Dissolved organic carbon (DOC) (a), Ca (b), and Zn (c) measured in solution in suspensions containing soil K1 and different additives. , NaOH; , Ca(OH)2; , cyclonic ashes; , zeolite A.

View larger version (18K): [in a new window]   Fig. 4. Measured (symbols) and calculated (lines) dissolved organic carbon (DOC) concentrations in suspensions containing soil K1 and different additives. , NaOH; , Ca(OH)2; , cyclonic ashes; , zeolite A.

View larger version (27K): [in a new window]   Fig. 5. (a) pH measured in the leachate of the first column experiment; (b–f) cumulative amounts of dissolved organic carbon (DOC), Na, Ca, Zn, and Cd leached from the columns. , no additives; , 0.3% Ca(OH)2; , 0.5% zeolite A; , 2.5% zeolite A.

View larger version (16K): [in a new window]   Fig. 6. Free ionic concentrations of (a) Ca, (b) Zn, and (c) Cd based upon speciation calculations in the column leachates. , no additives; , 0.3% Ca(OH)2; , 0.5% zeolite A; , 2.5% zeolite A.

View larger version (31K): [in a new window]   Fig. 7. (a) pH measured in the leachate of the second column experiment; (b–f) cumulative amounts of dissolved organic carbon (DOC), Na, Ca, Zn, and Cd leached from the columns. , no additives; , 0.1% Ca(OH)2; +, 0.5% Ca-treated zeolite A; x, 0.5% H-treated zeolite A; –, 0.5% Ca–H-treated zeolite A.

View larger version (16K): [in a new window]   Fig. 8. Free ionic concentrations of (a) Ca, (b) Zn, and (c) Cd based upon speciation calculations in the column leachates. , no additives; , 0.1% Ca(OH)2; +, 0.5% Ca-treated zeolite A; x, 0.5% H-treated zeolite A; –, 0.5% Ca–H-treated zeolite A.