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Optimization and Kinetic Studies for the Degradation of Lignin and Chlorophenols by using Rhizopus aarhizus
Research article
  

Optimization and Kinetic Studies for the Degradation of Lignin and Chlorophenols by using Rhizopus aarhizus


Lokeshwari.N, Keshava Joshi, Sangeeta. M, Jeetendra. K, Dilip. M

Department of Chemical Engineering, SDMCET. Dharwad. INDIA.


Corresponding author :

Lokeshwari.N,
Email:

Received: April 4, 2015,   Accepted: May 2, 2015,   Published:


Abstract:

Pulp and paper industry is considered as one of the 17 most polluting sectors as per Central Pollution Control Board. The waste water generated from this industry contains high organic content, dark brown coloration, lignin, Adsorbable Organic Halide (AOX), toxic pollutants, etc. Lignin is the component responsible for the color of wastewater whereas chlorophenol compounds pose a potential concern as they resist breaking down in the environment. Upon discharge, these effluents are very harmful to agricultural crops, aquatic life and human beings. Biodegradation of industrial Lignin and Chlorophenol by a isolate fungal identified as Rhizopus aarhizus, white rot fungi from Pulp and Paper effluent was studied in batch flask system with industrial effluent and synthetic solution. The flasks were operated at temperature 29°C at 200 rpm for four days in continuous mode. The Haldane model was used for kinetic studies. The value of substrate constant Ks and KI for chlorophenol were found to be 5 mgL-1 and 163.36 mgL-1and for lignin it was 4 mgL-1 and 202 mgL-1. The surface plot and contour plot for degradation of various parameter was plotted using Minitab 17.0. The optimum initial Concentration, Temperature, pH were found to be 10 ppm, 29oC and 6.0. The samples collected from wastewater of pulp and paper industry were treated with fungi (Rhizopus arrhizus) which showed maximum degradation of lignin and chlorophenol up to 90% at 480nm and 36 % at 510nm respectively.


Keywords: Wastewater, Rhizopus aarhizus, Kinetic studies, Optimization, Waste water treatment.


Citation:

Lokeshwari.N. et al.. (2015) Optimization and Kinetic Studies for the Degradation of Lignin and Chlorophenols by using Rhizopus aarhizus. j. of Physical and Chemical Sciences.V3I1.. DOI: 10.15297/JPCS.V3I1.01


Copyright:

© 2015 Lokeshwari.N. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.


      
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      Journal of Physical and Chemical Sciences