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Research Journal of Pharmacy and Technology
Year : 2020, Volume : 13, Issue : 4
First page : ( 1651) Last page : ( 1654)
Print ISSN : 0974-3618. Online ISSN : 0974-360X.
Article DOI : 10.5958/0974-360X.2020.00299.1

Biosorption of Dye using Lawsonia sp. as adsorbent

Sharmila S.*, Dinesh M., Kowsalya E., Kamalambigeswari R., Rebecca L. Jeyanthi

Department of Industrial Biotechnology, Bharath Institute of Higher Education and Research, Chennai-600073

*Corresponding Author E-mail: sharu312@gmail.com

Online published on 30 April, 2020.


In dyes were obtained mostly from inorganic sources and some very expensive organic dyes were obtained from natural sources. These dyes are highly toxic when they disposed in to environment without any treatment. In this work, carbonized Lawsonia sp. were used as an adsorbent for reducing the colour of malachite green dye with various pH such as 5, 6, 7, 8, 9 and temperature such as 4°C, 24°C and 50°C for 30 min. Different dye concentrations and adsorbent dosages were also carried out to find out optimum level. Results showed that, maximum adsorption was obtained at pH 7 at 24°C for physically activated carbon. For chemically activated carbon, it was found to be 5 pH and 24°C in which maximum adsorption was achieved. Optimum adsorbent dosage was estimated as 2g/100 ml of dye solution for both physically and chemically activated carbon and the dye concentration was found to be 0.1μg/ml.



Biosorption, Lawsonia sp., carbon, pH, temperature, dosage.


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