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Scientific Transactions in Environment and Technovation

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Scientific Transactions in Environment and Technovation, | 10.20894/STET.116.004.001.007
Year : 2018 | Volume: 4 | Issue: 1 | Pages : 27-36

Productivity and Biomass of the
Seagrasses of the Gulf of Mannar
Biosphere Reserve

Abstract :

A carbonaceous adsorbent prepared from an indigenous waste by acid treatment was tested for its efficiency in removing Rhodamine B (RDB). The parameters studied include agitation time, initial dye concentration, carbon dose, pH and temperature. The adsorption followed first order reaction equation and the rate is mainly controlled by intra-particle diffusion. Freundlich and Langmuir isotherm models were applied to the equilibrium data. The adsorption capacity (Qm) obtained from the Langmuir isotherm plots were 84.842, 88.574, 92.425 and 96.284 mg/g respectively at an initial pH of 7.0 at 30, 40, 50 and 600 C. The temperature variation study showed that the Rhodamine B adsorption is endothermic and spontaneous with increased randomness at the solid solution interface. Significant effect on adsorption was observed on varying the pH of the Rhodamine B solutions. Almost 83% removal of Rhodamine B was observed at 600 C. The Langmuir and Freundlich isotherms obtained, positive êH0 value, pH dependent results and desorption of dye in mineral acid suggest that the adsorption of Rhodamine B on FBC involves physisorption mechanism.

Keywords:

activated carbon (FBC), adsorption isotherm, equilibrium, intraparticle diffusion, kinetic and thermodynamic parameters, regeneration pattern, rhodamine B (RDB)

Citation: *,

( 2018), Productivity and Biomass of the
Seagrasses of the Gulf of Mannar
Biosphere Reserve. Scientific Transactions in Environment and Technovation, 4(1): 27-36

Mr.Veerapathiran K

Correspondence: T.Thangaradjou


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