Optimization of cadmium(II) removal from water using sunflower waste carbon – a statistical approach. (2nd October 2021)

• Record Type: Journal Article
• Authors: Jain, Monika; Garg, Vinod Kumar; Paliwal, Rashmi; Kadirvelu, Krishna; Chaudhry, Smita
• Is Part Of: Toxin reviews. Volume 40:Number 4(2021)
• Page Start: 1373
• Page End: 1382
• Publication Date: 2021-10-02
• Subjects: Central composite design -- response surface methodology -- heavy metal -- Helianthus annuus -- sunflower stem carbon; Toxicology -- Periodicals; Toxins -- Periodicals; 615.905
• DOI: 10.1080/15569543.2020.1718163
• Languages: English
• ISSNs: 1556-9543

Abstract

Abstract: In this study, a statistical experimental strategy was used to optimize the Cd(II) adsorption by chemically treated stems of Helianthus annuus (sunflower). The maximum cadmium adsorption was found at 100 mg/L when a dose of 2000 mg/100 ml was applied at pH 6.0. The highest percentage removal obtained using the model was 100%. The F value (17.28), lack-of-fit value (0.09) and coefficient of determination ( R 2 = 0.939) established the appropriateness of quadratic model. The results of confirmation experiment, i.e. 99.8% removal of Cd(II) by prepared adsorbent under optimized conditions agreed well with the model predictions.