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 Related articles in JEQ 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 HighWire Citing Articles via ISI Web of Science (4) Citing Articles via Google Scholar Google Scholar Articles by Hossner, L. R. Articles by Doolittle, J. J. Search for Related Content PubMed PubMed Citation Articles by Hossner, L. R. Articles by Doolittle, J. J. Agricola Articles by Hossner, L. R. Articles by Doolittle, J. J. Related Collections Ecosystem Restoration Geochemical Processes Other Environmental Contamination Soil Pollution Soil Chemistry

Iron Sulfide Oxidation as Influenced by Calcium Carbonate Application

^a Dep. of Soil and Crop Sciences, Texas A&M Univ., College Station, TX 77843
^b Plant Science Dep., South Dakota State Univ., Brookings, SD 57007

View larger version (32K): [in a new window]   Fig. 1. Residual FeS2 and CaCO3 in 1.9% FeS2 overburden treated with CaCO3 to neutralize 0 or 100% of the acid–base account deficit (A/Ba).

View larger version (13K): [in a new window]   Fig. 2. First-order plot of the loss of FeS2 in the 1.9% FeS2 overburden treated with CaCO3 to neutralize 0% of the acid–base account deficit.

View larger version (24K): [in a new window]   Fig. 3. Zero-order (0–100 d) and first-order (100–378 d) plots of the loss of FeS2 in the 4.1% FeS2 overburden treated with CaCO3 to neutralize 25% of the acid–base account deficit.

View larger version (20K): [in a new window]   Fig. 4. Zero-order plot of the loss of FeS2 in the 4.1% FeS2 overburden treated with CaCO3 to neutralize 50, 75, 100, and 125% of the acid–base account deficit (% A/Ba).

View larger version (35K): [in a new window]   Fig. 5. Dissolution rate of CaCO3 in the 4.1% FeS2 overburden treated with CaCO3 to neutralize 25, 50, 75, 100, and 125% of the acid–base account deficit (A/Ba).

View larger version (109K): [in a new window]   Fig. 6. Scanning electron micrographs of representative weathered pyrite particles separated from the overburden following 378 d of incubation and initially containing 4.1% FeS2. (A) Weathered pyrite particle from the 25% acid–base account deficit treatment. (B) Weathered pyrite particle from the 0% acid–base account deficit treatment. (C) Large weathered pyrite particle from the 25% acid–base account deficit treatment. (D) Large pyrite particle from the 125% acid–base account deficit treatment. There is no apparent evidence of pitting and the morphology is similar to pyrite particles at time zero.