A new enzymatic process for the treatment of phenolic pollutants
Braz. arch. biol. technol
; 56(4): 653-662, July-Aug. 2013. ilus, graf, tab
Article
in English
| LILACS
| ID: lil-684518
Responsible library:
BR1.1
ABSTRACT
This work aimed to develop a new economic enzymatic process to treat the phenolic pollutants using pure tyrosinase in stirred vessel and adopting temperature (T), pH, rotational speed (N), initial phenol (C P,o) and enzyme (C T) concentrations as independent variables. Experimental data of the residual phenol concentration (C P) were used to calculate the oxidation efficiency (η), initial oxidation rate (-r o) and time required to reach the end of reaction (t) that were selected as the responses. Under the optimal conditions (T = 45°C, pH 6.6, N = 400 rpm, C P,o = 100 ppm and C T = 50 U/mL), η was 88.1%, -r o = 10.2 mg L-1 min-1, t = 40 min. These results suggested that tyrosinase-rich crude extracts from vegetable byproducts could be quite promising.
Full text:
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Collection:
International databases
Database:
LILACS
Language:
English
Journal:
Braz. arch. biol. technol
Journal subject:
Biology
Year:
2013
Document type:
Article
Affiliation country:
Brazil
Institution/Affiliation country:
Universidade de São Paulo/BR