| Autor: |
Sarma, G.V.S., Bharathi, P. Bala, Murty, J.V.S., Raju, G.M.J., Ramesh, K.V., Sarma, C. Bhaskara |
| Předmět: |
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| Zdroj: |
Tecnica Italiana: Italian Journal of Engineering Science; Jul2021, Vol. 65 Issue 2-4, p442-445, 4p |
| Abstrakt: |
Experiments were carried out for the recovery of phenols from phenol fraction procured from tar distillation plant of Visakhapatnam steel plant by two stage alkali treatment, to study the effect of two-stage alkali treatment on the yield of phenols from phenol fraction. The results of the present investigation showed that two-stage alkali wash gives better yields of phenols compared to single stage alkali wash of the same phenol fraction with the same strength of alkali solution (NaOH). Also it is shown that maximum yield of phenols could be obtained with 35% strength of alkali. In the first stage 70% of 35% strength solution was used while in the second stage treatment 30% of the same strength solution was used. Improvements in the recovery efficiencies of phenols were found to be 47% more than those reported earlier in the single-stage extraction studies for the same strength of alkali solutions. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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