Characterization and Sodium Sorption Capacity of Biochar and Activated Carbon Prepared from Rice Husk
Publish Year: 1394
نوع سند: مقاله ژورنالی
زبان: English
View: 57
This Paper With 13 Page And PDF Format Ready To Download
- Certificate
- من نویسنده این مقاله هستم
استخراج به نرم افزارهای پژوهشی:
شناسه ملی سند علمی:
JR_JASTMO-17-4_022
تاریخ نمایه سازی: 1 آذر 1402
Abstract:
Biochar and activated carbon, as carbon-rich porous materials, have wide environmental applications. In the present research, rice husk (RH) was used for preparation of biochar at ۴۰۰, ۶۰۰, and ۸۰۰ °C under simple pyrolysis, physically-activated carbon with water steam, chemically-activated carbon with potassium hydroxide (KOH), and physiochemically-activated carbon with KOH and steam. Physical and chemical properties of biochar and activated carbons were characterized using nitrogen adsorption–desorption isotherm, Fourier transform, infra-red analysis, and Boehm method. The results showed that carbonization temperature and activation agents had significant effects on the characteristics of the samples. Activated carbon produced by KOH activation had the highest surface area (۲۲۰۱ m۲ g-۱) and total pore volume (۰.۹۶ cm۳ g-۱). High concentration of sodium (Na) is an important limiting factor to reuse poor quality water resources in arid and semiarid regions. The sorption capacity of biochars and activated carbons was investigated by performing batch sorption experiments using Na as adsorbate. Na sorption was increased with increasing surface area and pore volume. The highest Na sorption capacity of ۱۳۴.۲ mg g-۱ was achieved by the KOH activated carbon, which has the highest surface area and pore volume. The kinetic data were well-fitted to pseudo-first order and intra-particle diffusion models.
Keywords:
Authors
R. Rostamian
Department of Water Engineering, Isfahan University of Technology, Isfahan ۸۴۱۵۶-۸۳۱۱۱, Islamic Republic of Iran.
M. Heidarpour
Department of Water Engineering, Isfahan University of Technology, Isfahan ۸۴۱۵۶-۸۳۱۱۱, Islamic Republic of Iran.
S. F. Mousavi
Department of Civil Engineering, Semnan University, Semnan ۳۵۱۳۱-۱۹۱۱۱, Islamic Republic of Iran.
M. Afyuni
Department of Soil Science, Isfahan University of Technology, Isfahan ۸۴۱۵۶-۸۳۱۱۱, Islamic Republic of 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 :