The Application of Response Surface Methodology for Adsorption Optimization of Lead (II) onto Phosphogypusum

Abstract:

Using the phosphogypsum as adsorbent prepared from microwave modified for the removal of lead ions from aqueous solution has been investigated under optimized conditions in this study. Influences of parameters like adsorbent dose 0.5-1.5g/100mL, initial concentration of ions 20–60 mg/L , pH 5.0–7.0 and temperature 20–30°C on Pb ions adsorption were also examined, using Box-Behnken design matrix. Very high regression coefficient between the variables and the response indicates excellent evaluation of experimental data by second order polynomial regression model. The response surface method indicated that adsorbent dose 1.0g/100mL, initial concentration of ions 40mg/L , pH 7.0 and temperature 20°C were optimal for adsorption of Pb ions .

• Periodical: Advanced Materials Research (Volumes 955-959)
• Pages: 2026-2031
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.955-959.2026
• Online since: June 2014
• Authors: Ping Ning, Yue Hong Yang*, Dun Tao Shu, Lei Shi, Yang Cheng
• Keywords: Adsorption, Box-Behnken Design (BBD), Heavy Metal Ion, Phosphogypsum, Response Surface Methodology (RSM)

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