August 14, 2025Open Access

Optimization of Congo Red (Cr) Dye Adsorption From Aqueous Solution Onto Rice Husk (Rh) Biosorbent Using Response Surface Methodology (Rsm)

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The adsorption of Congo Red dye onto rice husk was highly effective, achieving 98.97% removal under optimal conditions.
Optimum conditions included a pH of 2.0, contact time of 10 minutes, and an adsorbent dosage of 0.539 g.
Fourier transform infrared spectroscopy and Brunauer-Emmett-Teller analysis characterized the rice husk biosorbent.
The adsorption capacity of the rice husk biosorbent was determined to be 3.95 mg/g.

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Batch adsorption experiments revealed effective Congo Red dye removal in aqueous solution via rice husk biosorbent, indicating RSM's utility.

Ibrahim et al. (2025) studied this question.

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Batch adsorption experiments revealed effective Congo Red dye removal in aqueous solution via rice husk biosorbent, indicating RSM's utility.