Single and competitive adsorption of Cu۲+ and Pb۲+ by tea pulp from aqueous solutions
Publish Year: 1400
نوع سند: مقاله ژورنالی
زبان: English
View: 143
This Paper With 10 Page And PDF Format Ready To Download
- Certificate
- من نویسنده این مقاله هستم
استخراج به نرم افزارهای پژوهشی:
شناسه ملی سند علمی:
JR_EHEM-9-1_008
تاریخ نمایه سازی: 17 اسفند 1400
Abstract:
Background: Removal of heavy metals by bioadsorbents is one of the effective and inexpensive methods for water and wastewater treatment. The aim of this study was to investigate the ability of tea pulp in order to remove Cu۲+ and Pb۲+ metals in two states of adsorption (single element and two elements) from aqueous solutions.
Methods: Experiments were performed on synthetic and real samples at ambient temperature. The effect of solution pH, adsorbent dose, contact time, and initial concentration on single and competitive removal of copper metals and lead was studied. Adsorption kinetics and adsorption isotherms were analyzed by pseudo-second-order kinetic equations, Elovich model and intraparticle diffusion, Freundlich and Langmuir equations, respectively.
Results: The maximum adsorption capacity for copper and lead was observed at pH = ۵-۸ and pH = ۴-۸, respectively. Maximum adsorption capacity for copper and lead by tea pulp in single-element solution (single) was ۳۷.۱۷ and ۴۸.۵۴ mg/g and in two-element solution (competitive), was ۲۸.۴۱ and ۴۳.۴۷ mg/g, respectively. The adsorption reaction of heavy metals by tea pulp followed the Longmuir isotherm and pseudo-second-order kinetic models.
Conclusion: Tea pulp as an inexpensive bioadsorbent is able to remove about one-third of the copper, and approximately, half of lead from aqueous solutions, so its use in the treatment of aqueous solutions will be beneficial.
Keywords:
Authors
Amin Pasgar
Environmental Health Engineering Research Center, Kerman University of Medical Sciences, Kerman, Iran
Alireza Nasiri
Environmental Health Engineering Research Center, Kerman University of Medical Sciences, Kerman, Iran
Neda Javid
Corresponding author: Environmental Health Engineering Research Center, Kerman University of Medical Sciences, Kerman, Iran
مراجع و منابع این Paper:
لیست زیر مراجع و منابع استفاده شده در این Paper را نمایش می دهد. این مراجع به صورت کاملا ماشینی و بر اساس هوش مصنوعی استخراج شده اند و لذا ممکن است دارای اشکالاتی باشند که به مرور زمان دقت استخراج این محتوا افزایش می یابد. مراجعی که مقالات مربوط به آنها در سیویلیکا نمایه شده و پیدا شده اند، به خود Paper لینک شده اند :