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370470

Treatment of Crude Phosphoric Acid from Some Undesirable Impurities

Article

Last updated: 21 Dec 2024

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Abstract

Organic matter contained in wet process phosphoric acid (WPPA) usually interacts with organic solvents and forms stable
foams, as well as third layer those prevent phase settling and other separation problems. Hence, removal of these organics
seems to be an important step for the production of decontaminated phosphoric acid and successful recovery of undesirable
elements. Removal of organic matter from crude phosphoric acid was carried out by adsorption using Kaolin and Ball clay
minerals. The different factors affecting the adsorption process were investigated. Under the optimum conditions the results
show that, the adsorption process is applicable for the high strength and diluted phosphoric acid. Ball clay was more effective
than Kaolin clay in the removal of organic matter as the adsorption efficiency was 53.6 & 39% respectively. The kinetic
models were applied to the adsorption rate data and the results indicate that, the process was found to obey pseudo second
order rate model. The recovery of 84.7%U and 87.8% ΣREE from the WPPA was obtained using di-nonyl phenyl phosphoric
acid (DNPPA) alone in kerosene under desirable conditions, and the stripping of 93.7 and 88.2% of U and ΣREE respectively
was achieved by carbonate solution.

DOI

10.21608/jbes.2018.370470

Keywords

organic matter, Adsorption, Uranium, crude phosphoric acid, di-nonyl phenyl phosphoric acid (DNPPA)

Authors

First Name

M.M.

Last Name

Fawzy

MiddleName

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Affiliation

Nuclear Materials Authority, P.O. Box 530, El Maadi, Cairo, Egypt

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Orcid

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First Name

N.M.

Last Name

Farag

MiddleName

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Affiliation

Nuclear Materials Authority, P.O. Box 530, El Maadi, Cairo, Egypt

Email

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City

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Orcid

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First Name

Alaa S.

Last Name

Amin

MiddleName

-

Affiliation

Chemisty Department, Faculty of Science, Banha University, Egypt

Email

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City

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Orcid

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First Name

M.S.

Last Name

Elmaghrby

MiddleName

-

Affiliation

Nuclear Materials Authority, P.O. Box 530, El Maadi, Cairo, Egypt

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Orcid

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Volume

5

Article Issue

3

Related Issue

49528

Issue Date

2018-07-01

Receive Date

2024-07-29

Publish Date

2018-07-01

Page Start

204

Page End

216

Print ISSN

2536-9202

Online ISSN

2356-6388

Link

https://jbes.journals.ekb.eg/article_370470.html

Detail API

https://jbes.journals.ekb.eg/service?article_code=370470

Order

370,470

Type

Original Article

Type Code

3,063

Publication Type

Journal

Publication Title

Journal of Basic and Environmental Sciences

Publication Link

https://jbes.journals.ekb.eg/

MainTitle

Treatment of Crude Phosphoric Acid from Some Undesirable Impurities

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Article

Created At

21 Dec 2024