National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
Agricultural wastes are considered as viable alternatives because of their abundant availability, low cost and also with various functional groups such as carboxylic acid, ester, carboxylate, hydroxyl, phenolic and amino that can act as adsorption sites for heavy metal ion. Banana peel waste based biosorbents to remove cadmium from waste water was taken up for the present study. Banana peel biochar was used as biosorbent and biosorption study was conducted at different pH (4, 5, 6, 7 and 8), different concentration (0, 10, 25, 50, 75 and 100 ppm) and different contact time (0, 1, 2, 3, 4, 6 and 8 h). The adsorption of Cd by BPB was increased along with increase of pH from 4 to 7, followed by pH 8. The highest adsorption (91.51 %) was observed at pH 7 and 75 ppm concentration. The adsorption of Cd (86.69 %) was recorded in 6 hours contact time. The FTIR spectrum of BPB after Cd adsorption revealed a large number of peaks within the interval of 4000-400 cm-1. Alkane functional group with (C-H) band was detected at 2918.73 cm-1 frequency before adsorption but after adsorption of Cd, it was decreased to 2917.77 cm-1. Alkene functional group with (=C-H) band was reported at 997.982 cm-1 adsorption frequency before adsorption but after adsorption of Cd, the alkene functional group was changed to ether with (C=O) band at 1013.41 cm-1 frequencies. There were no changes in Alkyl Halide functional group before adsorption and after adsorption of Cd. Hence, the presence study with BPB for Cd removal is effective due to the negative surface charge on the of the biochar. It also an ecofriendly technique to remove heavy metal from the wastewater.
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