TY - JOUR
T1 - Sonocatalytic degradation coupled with single-walled carbon nanotubes for removal of ibuprofen and sulfamethoxazole
AU - Al-Hamadani, Yasir A.J.
AU - Jung, Chanil
AU - Im, Jong Kwon
AU - Boateng, Linkel K.
AU - Flora, Joseph R.V.
AU - Jang, Min
AU - Heo, Jiyong
AU - Park, Chang Min
AU - Yoon, Yeomin
N1 - Publisher Copyright:
© 2017 Elsevier Ltd
PY - 2017
Y1 - 2017
N2 - This study examined the degradation of pharmaceuticals ((PhACs), ibuprofen (IBP) and sulfamethoxazole (SMX)) using an ultrasonic (US) reactor at a 1000 kHz frequency in the absence and presence of single walled carbon nanotubes (SWNTs). In the absence of SWNTs, maximum degradation of PhACs were achieved under high temperature; 55 > 35 > 25 > 15 °C. In addition, the relatively higher degradation of IBP and SMX was obtained under acidic condition at pH 3.5 than pH 7 and 9.5; >99%, 79%, and 72% for IBP and >99%, 75%, and 65% for SMX, respectively. However, H2O2production increased from 77 μM (no SWNTs) to 115 μM in the presence of SWNTs (45 mg/L) at pH 7. In addition, the removal of IBP and SMX significantly increased under US/SWNTs reaction conditions than US and SWNTs only reactions. The removal of IBP and SMX was 57% and 48% under SWNTs (adsorption) reactions, 77% and 70% under US reactions, and 97% and 92% under US/SWNTs reactions, respectively. This study evaluated the effect of temperature, pH, SWNTs, and physiochemical properties of selected PhACs under US process. In addition, the adsorption molecular modeling was validated with the experimental results.
AB - This study examined the degradation of pharmaceuticals ((PhACs), ibuprofen (IBP) and sulfamethoxazole (SMX)) using an ultrasonic (US) reactor at a 1000 kHz frequency in the absence and presence of single walled carbon nanotubes (SWNTs). In the absence of SWNTs, maximum degradation of PhACs were achieved under high temperature; 55 > 35 > 25 > 15 °C. In addition, the relatively higher degradation of IBP and SMX was obtained under acidic condition at pH 3.5 than pH 7 and 9.5; >99%, 79%, and 72% for IBP and >99%, 75%, and 65% for SMX, respectively. However, H2O2production increased from 77 μM (no SWNTs) to 115 μM in the presence of SWNTs (45 mg/L) at pH 7. In addition, the removal of IBP and SMX significantly increased under US/SWNTs reaction conditions than US and SWNTs only reactions. The removal of IBP and SMX was 57% and 48% under SWNTs (adsorption) reactions, 77% and 70% under US reactions, and 97% and 92% under US/SWNTs reactions, respectively. This study evaluated the effect of temperature, pH, SWNTs, and physiochemical properties of selected PhACs under US process. In addition, the adsorption molecular modeling was validated with the experimental results.
KW - Ibuprofen
KW - Molecular modeling
KW - Single-walled carbon nanotubes
KW - Sonocatalytical degradation
KW - Sulfamethoxazole
UR - http://www.scopus.com/inward/record.url?scp=85009348338&partnerID=8YFLogxK
U2 - 10.1016/j.ces.2017.01.011
DO - 10.1016/j.ces.2017.01.011
M3 - Article
AN - SCOPUS:85009348338
SN - 0009-2509
VL - 162
SP - 300
EP - 308
JO - Chemical Engineering Science
JF - Chemical Engineering Science
ER -