کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4364667 1616320 2015 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Xanthate modified apple pomace as an adsorbent for removal of Cd (II), Ni (II) and Pb (II), and its application to real industrial wastewater
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست علوم زیست محیطی (عمومی)
پیش نمایش صفحه اول مقاله
Xanthate modified apple pomace as an adsorbent for removal of Cd (II), Ni (II) and Pb (II), and its application to real industrial wastewater
چکیده انگلیسی


• Removal of Cd (II), Ni (II) and Pb (II) is proposed using XMAP.
• XMAP was characterized by FTIR, SEM and EDS before and after adsorption.
• Langmuir, Freundlich, kinetic and thermodynamic models were applied.
• Advantage of regeneration makes XMAP a better adsorbent.

A biosorbent was prepared by introducing xanthate group onto apple pomace (AP) for removal of Cd (II), Ni (II) and Pb (II) from aqueous solution. It created new sulphur containing binding sites and large surface area for adsorption of metal ions. Xanthate modified apple pomace (XMAP) was characterized by Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscopy (SEM) and Energy Dispersive Spectroscopy (EDS). From Langmuir isotherm, the maximum adsorption capacities of XMAP were found to be 112, 51 and 178.57 mg g−1 for Cd (II), Ni (II) and Pb (II), respectively. Adsorption of Cd (II), Ni (II) and Pb (II) followed pseudo-second order kinetics with correlation coefficients of 0.99, 0.99 and 0.96, respectively. Regeneration study revealed that XMAP could be repeatedly used for more than eight cycles with removal efficiency >50%. Simultaneous removal of Cd (II), Ni (II) and Pb (II) was also demonstrated from real industrial wastewater. XMAP was found to be a superior adsorbent as compared to AP. High adsorption capacity, kinetic rate, reusability and application to real wastewater indicated that XMAP can be applied as a tertiary treatment option in wastewater treatment technology.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Biodeterioration & Biodegradation - Volume 97, January–February 2015, Pages 60–66
نویسندگان
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