The solubilityof phosphogypsum and recovery ofheavy and radioactive elements
Joint Authors
al-Kadir, Isra'a A.
Jalhum, Muayyad G.
Rashid, Walid T.
Source
Engineering and Technology Journal
Issue
Vol. 38, Issue 10A (31 Oct. 2020), pp.1470-1480, 11 p.
Publisher
Publication Date
2020-10-31
Country of Publication
Iraq
No. of Pages
11
Main Subjects
Engineering & Technology Sciences (Multidisciplinary)
Topics
Abstract EN
The essential purpose of this paper is to illustrate and inspect the leaching characteristics of Iraqi Phosphogypsum (PG).
The paper presents the results of the dissolution characteristics of heavy and radioactive elements from PG, which is a by-product result from the industry of phosphate fertilizers.
Leachability of heavy and radioactive elements in deionized water that has been inspected under various states of leaching, including solid/liquid ratio (10, 20 and 50 /1g/L) and temperatures (25, 45 and 85 °C), with constant other parameters such as string speed (300 rpm) and contact time (60 minutes).
For the most analysis elements, the progressive release of the metals, in addition to the major elements reflects high mobility.
The mobility of trace metals in PG has been generally classified into three main degrees: (1) high mobility elements such as Pb, Zn, Mn, and Cr; (2) moderate mobility elements such as Sr, V, Ba,Y,Hg, K and Ni; and (3)l ow mobility elements like Ca,Cu,Fe, and Ag.
The maximum concentrations of the most of the metals were attained from a leaching state of 10/1g/L.
Regarding temperature, the experimental results revealed that the PG solubility to leaching out elements increases noticeably as the applied temperature ranges from 25 to 45 °C; after this degree, the leaching efficiency decreases.
Chloride had a positive and negative effect on the solubility of phosphorus.
Calcium chloride had an adverse effect on solubility and observed reduced solubility with increased chloride.
While the positive effect of sodium and magnesium chloride was observed, the solubility ratio increased with the increase of chlorides.
However, the effect of magnesium chloride was higher compared to the sodium chloride one.
American Psychological Association (APA)
Rashid, Walid T.& al-Kadir, Isra'a A.& Jalhum, Muayyad G.. 2020. The solubilityof phosphogypsum and recovery ofheavy and radioactive elements. Engineering and Technology Journal،Vol. 38, no. 10A, pp.1470-1480.
https://search.emarefa.net/detail/BIM-1235573
Modern Language Association (MLA)
Rashid, Walid T.…[et al.]. The solubilityof phosphogypsum and recovery ofheavy and radioactive elements. Engineering and Technology Journal Vol. 38, no. 10A (2020), pp.1470-1480.
https://search.emarefa.net/detail/BIM-1235573
American Medical Association (AMA)
Rashid, Walid T.& al-Kadir, Isra'a A.& Jalhum, Muayyad G.. The solubilityof phosphogypsum and recovery ofheavy and radioactive elements. Engineering and Technology Journal. 2020. Vol. 38, no. 10A, pp.1470-1480.
https://search.emarefa.net/detail/BIM-1235573
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 1479-1480
Record ID
BIM-1235573