SPECIATION OF NICKEL AND CADMIUM DURING THE INCUBATION TIME BY MINTEQA2 MODEL

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RAVANBAKHSH MOHAMMAD HOSSEIN; FOTOVAT AMIR; HAGHNIA GHOLAM HOSSEIN

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Seminar Paper

Paper Information

Seminar: HAMAYESHE MANTAGHEI KARBORD FANAVARIHAYE NOVIN DAR KESHAVARZI
Year:2008 | Issue:1

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Title

SPECIATION OF NICKEL AND CADMIUM DURING THE INCUBATION TIME BY MINTEQA2 MODEL

Author(s)

RAVANBAKHSH MOHAMMAD HOSSEIN | FOTOVAT AMIR | HAGHNIA GHOLAM HOSSEIN

Keywords

HEAVY METALS

SPECIATION

CALCAREOUS SOILS

MINTEQA2 MODEL

SOIL SOLUTION

Abstract

IN ORDER TO STUDY THE CHEMICAL BEHAVIOR OF NICKEL AND CADMIUM DURING THE INCUBATION TIME, A FACTORIAL EXPERIMENT AS A COMPLETELY RANDOMIZED DESIGN WITH THREE REPLICATIONS WAS CARRIED OUT. FACTORS INCLUDED TWO DIFFERENT SOILS (4 AND 30 PERCENT CACO3), TWO LEVELS OF NICKEL (0 AND 100 MG.KG-1), TWO LEVELS OF CADMIUM (0 AND 25 MG.KG-1) AND ORGANIC MATTER IN THE FORM OF SEWAGE SLUDGE IN TWO LEVELS (0 AND 100 TONE.HA-1), AND THREE INCUBATION TIMES (0, 30, 60 DAYS). CONCENTRATION OF CATIONS, ANIONS, DISSOLVED ORGANIC CARBON AND PH WERE MEASURED IN SOIL EXTRACTS. SOIL SOLUTIONS WERE SPECIATED FOR CHEMICAL FORMS OF NICKEL AND CADMIUM BY MINTEQA2 MODEL. THE RESULTS OF THIS STUDY SHOWED THAT, AVAILABLE NICKEL AND CADMIUM DECREASED SIGNIFICANTLY WITH TIME. IN BEGGING OF THE EXPERIMENT A MAJOR PORTION OF THE APPLIED CADMIUM TO BE PRESENT IN THE FREE DIVALENT FORMS (37% OF DISSOLVED CADMIUM) AND GRADUALLY BE CONVERTED TO OTHER FORMS SUCH AS CARBONATE, BICARBONATE, SULFATE AND CHLORATE FORMS. NICKEL WAS PRESENT MAINLY IN THE CARBONATED FORMS WITH AN AVERAGE OF 90.6%. ORGANO-METAL COMPLEXES ACCOUNTED FOR ONLY A MINOR PROPORTION OF COMPLEXED METALS; HOWEVER SIMILAR TRENDS SHOWED BETWEEN DOM AND M-DOM. IT SEEMS THAT IN THE STUDY SOILS CALCIUM CARBONATE PLAYS A KEY ROLE IN CHEMICAL BEHAVIOR OF NICKEL AND CADMIUM IN SOLUTION PHASE.

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APA: Copy

RAVANBAKHSH, MOHAMMAD HOSSEIN, FOTOVAT, AMIR, & HAGHNIA, GHOLAM HOSSEIN. (2008). SPECIATION OF NICKEL AND CADMIUM DURING THE INCUBATION TIME BY MINTEQA2 MODEL. Hamayesh Mantaghei karbord fanavarihaye Novin Dar keshavarzi. SID. https://sid.ir/paper/905156/en

Vancouver: Copy

RAVANBAKHSH MOHAMMAD HOSSEIN, FOTOVAT AMIR, HAGHNIA GHOLAM HOSSEIN. SPECIATION OF NICKEL AND CADMIUM DURING THE INCUBATION TIME BY MINTEQA2 MODEL. 2008. Available from: https://sid.ir/paper/905156/en

IEEE: Copy

MOHAMMAD HOSSEIN RAVANBAKHSH, AMIR FOTOVAT, and GHOLAM HOSSEIN HAGHNIA, “SPECIATION OF NICKEL AND CADMIUM DURING THE INCUBATION TIME BY MINTEQA2 MODEL,” presented at the Hamayesh Mantaghei karbord fanavarihaye Novin Dar keshavarzi. 2008, [Online]. Available: https://sid.ir/paper/905156/en

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