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https://doi.org/10.1016/j.procbio.2022.05.015
Copy DOIJournal: Process Biochemistry | Publication Date: May 19, 2022 |
Citations: 19 |
Due to abrupt increase in secondary pollution because of the non-biodegradable nature of adsorbents, it has become imperative to develop new green and sustainable adsorbents which further do not contribute any pollution. In order to fill this void here we have developed a novel green L-methionine functionalized kaolinite@cellulose (Meth-Kal@Cellulose) bionanocomposite for sequestration the dye Amido Black 10B from the aqueous solution. The maximum adsorption capacity (38.78 mgg−1) was observed at pH 2, dose 0.01 g and equilibrium was attained in 180 min. The adsorption capacity increased from 38.78 to 160.80 mgg−1 as the concentration increased from 20 to 100 mgL−1. The maximum monolayer adsorption capacity (172.14 mgg−1) was recorded at 30 °C. The experimental data was further validated with various kinetic models and pseudo second order (PSO) determine the best fit kinetic model with highest coefficient of (R2, 0.99). The positive change in enthalpy confirmed the endothermic nature of the adsorption process. The (Meth-Kal@Cellulose) bionanocomposite can be successfully recycled up to 4th cycle with a capacity of 56% in last cycle. To study the surface morphology and possible mechanism between the adsorbent and adsorbate, the (Meth-Kal@Cellulose) bionanocomposite was characterized by different analytical techniques like SEM, FTIR, TEM and XRD.
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