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Optimization study demonstrates 90% regeneration efficiency in adsorbent from hair, indicating its potential for nitrate decontamination in water.
Chemically modified human hair has been investigated for its ability to remove nitrate from aqueous solutions. The adsorbent was characterized using SEM, EDX, FTIR and ZPC. The experimental results showed that the Langmuir isotherm provided a good fit, with a maximum adsorption capacity of 16.9 mg/g. The optimization study, using Response Surface Methodology, revealed a desirability value of 0.998. Therefore, human hair could serve as an effective adsorbent with 90% regeneration efficiency after four cycles.
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Sen et al. (2025) studied this question.
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