Peanut shells were incorporated in polymeric matrix of chitosan/xanthan/acrylic acid to form Cs/XN/AAc-PS composite by using gamma irradiation. It was found that 10 kGy irradiation dose is sufficient to crosslinking the network structure and increasing with irradiation dose up to 30 kGy. A decrease in gel content was observed at 40 kGy. The gel content was found to be increased with increasing AAc content. The swelling percentage decreases by increasing of AAc content and irradiation dose except at 40 kGy. Characterization the composite was performed by Fourier-transform infrared spectroscopy, field emission scanning electron microscopy, and dynamic light scattering. The adsorption performance of Cs/XN/AAc-PS composite towards the removal of Ni 2+ and Co 2+ was investigated. The adsorption capacity was found to be enhanced with increasing the temperature, initial metal ion concentration and pH. The highest adsorption capacity values for Ni 2+ and Co 2+ by Cs/XN/AAc-PS composite are 6.84 and 3.73 mmol/g at pH 6 and initial concentration 150 mg/L, respectively. The maximum capacity was done at the adsorbent dosage of 0.1 g.
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Al-Qudah et al. (2022) studied this question.
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