Sorption of cd (II) ions by chitosan modified peanut shell biochar from aqueous solution
Publish place: Advances in Environmental Technology، Vol: 5، Issue: 4
Publish Year: 1398
نوع سند: مقاله ژورنالی
زبان: English
View: 202
This Paper With 9 Page And PDF Format Ready To Download
- Certificate
- من نویسنده این مقاله هستم
استخراج به نرم افزارهای پژوهشی:
شناسه ملی سند علمی:
JR_AET-5-4_002
تاریخ نمایه سازی: 19 خرداد 1400
Abstract:
In this paper, biochar was prepared from peanut shells, and then the pristine biochar (PBc) was modified by chitosan (CBc). The characteristics of the absorbents were investigated using infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and Brunauer, Emmett and Teller analysis (BET). The effects of the biochars dosage, pH, initial cadmium concentration, and contact time on cadmium removal were evaluated. Adsorption isotherms and kinetic models were used to explain the adsorption process. The results indicated that CBc could be used as a biosorbent for the removal of heavy metals from the aqueous solution. The adsorption data conformed best to the Langmuir isotherm. Optimum conditions for the highest removal of Cd (II) were obtained at the biochar dosage of ۰.۶ g/L, ۳۰ mg/L initial concentration of Cd (II) solution, pH value of ۶, and within ۳۰ minutes. The maximum adsorption capacities of pristine and modified biochar were found to be ۴۰ mg/g and ۵۸.۸۲۳ mg/g, respectively. The kinetic data displayed that pseudo-second-order kinetic model can well fit the process of cadmium biosorption. The coatings of biochar with chitosan can greatly improve the absorbent efficiency in the removal of heavy metals and the chitosan-modified biochar can be used as a, low-cost, effective and environmental-friendly adsorbent.
Keywords:
Authors
Hadiseh Shabani
Department of Soil Science, College of Agriculture, University of Zanjan, Zanjan, Iran
Mohammad Amir Delavar
Department of Soil Science, College of Agriculture, University of Zanjan, Zanjan, Iran
Saeid Taghavi Fardood
Department of Chemistry, University of Zanjan, Zanjan, 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 :