Utilization of nitric acid wastes from bleaching earth production

L. Kótai, B. Kazinczy, I. Gacs, K. Szentmihályi, A. Keszler, K. Szasz

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Nitric acid activation of bentonite has been studied with the aim of harmonizing bleaching earth and ammonium nitrate fertilizer production, where the latter is obtained from waste acid via neutralization with ammonia. In this paper, a mathematical model is described for composition measurement of the waste acid formed during the activation of the bentonite. On the basis of the results obtained from the model, the amount of concentrated nitric acid necessary for refreshing the recycled acidic solution can easily be estimated. The amounts of the products formed during ammoniacal neutralization, such as ammonium nitrate, hydroxides of hydrolizable metals, and nitrates of nonhydrolizable metals, as well as the amount of activated bentonite, can also be calculated. It is established that, with an increase in the recycling number, the activation process becomes more economical via decreasing energy and material requirements.

Original languageEnglish
Pages (from-to)3920-3925
Number of pages6
JournalIndustrial and Engineering Chemistry Research
Volume39
Issue number10
Publication statusPublished - Oct 2000

Fingerprint

Bentonite
Nitric Acid
Nitric acid
bleaching
Bleaching
nitric acid
bentonite
Nitrates
Earth (planet)
Chemical activation
ammonium nitrate
Metals
Hydroxides
acid activation
acid neutralization
Acids
metal
Fertilizers
neutralization
Ammonia

ASJC Scopus subject areas

  • Polymers and Plastics
  • Environmental Science(all)
  • Chemical Engineering (miscellaneous)

Cite this

Kótai, L., Kazinczy, B., Gacs, I., Szentmihályi, K., Keszler, A., & Szasz, K. (2000). Utilization of nitric acid wastes from bleaching earth production. Industrial and Engineering Chemistry Research, 39(10), 3920-3925.

Utilization of nitric acid wastes from bleaching earth production. / Kótai, L.; Kazinczy, B.; Gacs, I.; Szentmihályi, K.; Keszler, A.; Szasz, K.

In: Industrial and Engineering Chemistry Research, Vol. 39, No. 10, 10.2000, p. 3920-3925.

Research output: Contribution to journalArticle

Kótai, L, Kazinczy, B, Gacs, I, Szentmihályi, K, Keszler, A & Szasz, K 2000, 'Utilization of nitric acid wastes from bleaching earth production', Industrial and Engineering Chemistry Research, vol. 39, no. 10, pp. 3920-3925.
Kótai, L. ; Kazinczy, B. ; Gacs, I. ; Szentmihályi, K. ; Keszler, A. ; Szasz, K. / Utilization of nitric acid wastes from bleaching earth production. In: Industrial and Engineering Chemistry Research. 2000 ; Vol. 39, No. 10. pp. 3920-3925.
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