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- 저자 : Nurgul Ozbay (검색결과 1 건)
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Nurgul Ozbay,Adife Seyda Yargic 한국공업화학회 2018 Journal of Industrial and Engineering Chemistry Vol.57 No.-
Toxic metal bearing effluents can cause severe environmental contamination; thus metal removal by adsorption is a vital situation. In this study, apple pulp carbon was tested as low-cost adsorbent for the copper(II) and cobalt(II) adsorption studies. 25 full factorial experimental design was utilized to optimize the effects of pH, adsorbent dosage, initial metal ion concentration, contact time and temperature. ANOVA, F-test and Student’s t-test showed that Cu(II) and Co(II) adsorption is slightly temperature and contact time dependent but markedly increases with solution pH and adsorbent dosage. Although the initial Cu(II) concentration had a negative effect on removal efficiency, the initial Co(II) concentration had a positive effect. The suggested optimum conditions for 90.49% Cu(II) and 65.11% Co(II) removal were: pH 5, the adsorbent dosage = 0.4 g/50 mL, the initial metal ion concentration = 10 and 20 mg/L, temperature = 40 and 20 °C, contact time = 60 and 120 min, respectively. pH was found as significant within a 95% confidence level for both Cu(II) and Co(II) removal. Additionally, main effects of adsorbent dosage and initial concentration, the interaction effect of pH × initial concentration were also found as significant for Cu(II) removal. In conclusion, apple pulp carbon could be successfully applied for the removal of heavy metals because of its low-cost and abundance.
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