کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6306995 1618819 2016 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Phenyl-functionalized magnetic palm-based powdered activated carbon for the effective removal of selected pharmaceutical and endocrine-disruptive compounds
ترجمه فارسی عنوان
کربن فعال پودر کربن مبتنی بر پالم فینلی برای حذف مؤثر ترکیبات دارویی انتخاب شده و ترکیبات غشایی اندوکرین
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
چکیده انگلیسی


- Magnetite film was coated on the surface of PPAC via hydrothermal co-precipitation.
- Phenyl-organosilane was successfully silanized on magnetite film of MPPAC.
- Unique features of MPPAC-TEPS cause enhanced adsorption rates and capacities of POPs.
- Thermal regeneration effectively desorb POPs to from MPPAC-TEPS.

Triethoxyphenylsilane (TEPS)-functionalized magnetic palm-based powdered activated carbon (MPPAC-TEPS) was prepared and characterized using various spectroscopic methods, and then tested for the removal of bisphenol A, carbamazepine, ibuprofen and clofibric acid. Magnetite film on MPPAC-TEPS was homogeneously coated on the outer surface of palm-based powdered activated carbon (PPAC) through a hydrothermal co-precipitation technique. Followed by silanization of phenyl-functionalized organosilane on MPPAC's magnetic film. As results, micro/mesopore surface area and volume increased without significant pore clogging and iron (Fe) dissolution under the acidic conditions was greatly decreased. The unique structural and chemical features of MPPAC-TEPS were found to be the main reasons for the enhanced adsorption rates and removal capacities of POPs. The presence of electrolytes and different pH values greatly affected the sorption efficiencies. The dominant sorption mechanism of POPs by MPPAC-TEPS was determined to be π-π interaction (physisorption), based on thermodynamic (ΔG°) and differential scanning calorimetry (DSC). Thermal regeneration at a low temperature (350 °C) was an effective method to desorb the retained POPs and enabled to reactivate MPPAC-TEPS with sustained sorption rates and capacities, whereas PPAC was largely exhausted. As a new type of sorbent for POPs, MPPAC-TEPS has operational advantages, such as magnetic separation and stable regeneration.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemosphere - Volume 152, June 2016, Pages 71-80
نویسندگان
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