Spectrophotometric Determination of Uranium in Waste Water of Phosphoric Acid and Fertilizer Manufacturing Process

A. UYANIK; N. TINKILIÇ; M. ODABAŞOĞLU; H. KARACA

Makale detayları

Spectrophotometric Determination of Uranium in Waste Water of Phosphoric Acid and Fertilizer Manufacturing Process

Yazarlar:

A. UYANIK | N. TINKILIÇ | M. ODABAŞOĞLU | H. KARACA

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Chemistry 1999 Vol.23 Issue 3, pp.275-284

Belge Tipi:

Makale

Yayın Tarihi:

2/1999

Belge Dili:

Türkçe

Document ID (Org No.):

2000730403

Sıklık:

İki Aylık

eISSN:

1303-6130

pISSN:

1300-0527

Özet:

 

In this study, waste water drains and produced phosphate  fertilizers of conventional wet-process (hemihydrate) phosphoric acid  and phosphate fertilizer plants were investigated to determine the  average uranium contents in the active manufacturing period.  The  method chosen for the determination of uranium was an extension of an  existing spectroanalytical method and was adopted for waste water  analysis as described.  The results show that average uranium contents  (mg m-3) in a three-month period are appreciable in the waste water  channel of the H3PO4 unit, produce acid containing 28% P2O5  (20.75), H3PO4 unit, produce acid containing 54% P2O5 (35.69),  NPK (Nitrogen, Phosphorus, Potassium fertilizer) process (23.94), DAP  (diamonium phosphate fertilizer) process (58.26) and dilution with the  factory's other waste water streams which contain no uranium do not  help to reduce the content to the EPA's (Environmental Protection  Agency) stated permittable U level (for underground waters 20 mg  m-3) in the sea discharge joint waste channel (34.01).  The  phosphate fertilizers such as composite NPK with 15% P2O5 were also  found to contain appreciable amounts of uranium, 25.28 and 51.76  respectively (mg kg-1).

 

In this study, waste water drains and produced phosphate  fertilizers of conventional wet-process (hemihydrate) phosphoric acid  and phosphate fertilizer plants were investigated to determine the  average uranium contents in the active manufacturing period.  The  method chosen for the determination of uranium was an extension of an  existing spectroanalytical method and was adopted for waste water  analysis as described.  The results show that average uranium contents  (mg m-3) in a three-month period are appreciable in the waste water  channel of the H3PO4 unit, produce acid containing 28% P2O5  (20.75), H3PO4 unit, produce acid containing 54% P2O5 (35.69),  NPK (Nitrogen, Phosphorus, Potassium fertilizer) process (23.94), DAP  (diamonium phosphate fertilizer) process (58.26) and dilution with the  factory's other waste water streams which contain no uranium do not  help to reduce the content to the EPA's (Environmental Protection  Agency) stated permittable U level (for underground waters 20 mg  m-3) in the sea discharge joint waste channel (34.01).  The  phosphate fertilizers such as composite NPK with 15% P2O5 were also  found to contain appreciable amounts of uranium, 25.28 and 51.76  respectively (mg kg-1).

Makale detayları

Spectrophotometric Determination of Uranium in Waste Water of Phosphoric Acid and Fertilizer Manufacturing Process

Yazarlar: A. UYANIK | N. TINKILIÇ | M. ODABAŞOĞLU | H. KARACA

Yayıncı: TUBITAK

Dergi: Turkish Journal of Chemistry 1999 Vol.23 Issue 3, pp.275-284

Belge Tipi: Makale

Yayın Tarihi: 2/1999

Belge Dili: Türkçe

Document ID (Org No.): 2000730403

Sıklık: İki Aylık

eISSN: 1303-6130

pISSN: 1300-0527

Sayı

Yazarlar:

A. UYANIK | N. TINKILIÇ | M. ODABAŞOĞLU | H. KARACA

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Chemistry 1999 Vol.23 Issue 3, pp.275-284

Belge Tipi:

Makale

Yayın Tarihi:

2/1999

Belge Dili:

Türkçe

Document ID (Org No.):

2000730403

Sıklık:

İki Aylık

eISSN:

1303-6130

pISSN:

1300-0527