TY - JOUR
T1 - A study on the removal of contaminants from secondary treated municipal wastewater by solar photocatalysis
AU - Cheriyan, Anna Jesil
AU - Shaik, Feroz
AU - Baawain, Mahad Said Ali
AU - Sarkar, Jyoti Prakash
N1 - Publisher Copyright:
© 2017, Gh. Asachi Technical University of Iasi. All rights reserved.
PY - 2017/7/1
Y1 - 2017/7/1
N2 - The aim of this work was to study the effectiveness of photocatalysis in the removal of contaminants from secondary treated municipal wastewater, on a batch scale. The samples were collected from the outlet of the secondary clarifier in the municipal wastewater plant located at A1 Khoudh, Muscat, Sultanate of Oman. The influences of TiO2 catalyst loading and solar radiation exposure time were investigated for the removal of COD and total Coliforms. 60% removal of COD was achieved with a catalyst loading of 350 mg L−1 after 4 hours of solar radiation exposure. O % survival of total Coliforms was reached at a catalyst loading of 150 mg L−1 after four hours of solar radiation exposure. It was observed that there was an increase in the concentrations of SO42−, PO42−, NO32− and Cl− ions and this trend was observed with increasing photocatalyst concentration. Variation in sample pH was negligible. The data analyzed showed that this method is effective for the reduction of the organic load and total Coliforms in waste water, which is significant to note as it is based on the utilization of freely available solar energy throughout the calendar year in the region.
AB - The aim of this work was to study the effectiveness of photocatalysis in the removal of contaminants from secondary treated municipal wastewater, on a batch scale. The samples were collected from the outlet of the secondary clarifier in the municipal wastewater plant located at A1 Khoudh, Muscat, Sultanate of Oman. The influences of TiO2 catalyst loading and solar radiation exposure time were investigated for the removal of COD and total Coliforms. 60% removal of COD was achieved with a catalyst loading of 350 mg L−1 after 4 hours of solar radiation exposure. O % survival of total Coliforms was reached at a catalyst loading of 150 mg L−1 after four hours of solar radiation exposure. It was observed that there was an increase in the concentrations of SO42−, PO42−, NO32− and Cl− ions and this trend was observed with increasing photocatalyst concentration. Variation in sample pH was negligible. The data analyzed showed that this method is effective for the reduction of the organic load and total Coliforms in waste water, which is significant to note as it is based on the utilization of freely available solar energy throughout the calendar year in the region.
KW - COD
KW - Photocatalyst
KW - Solar radiation
KW - Suspension
KW - Total Coliforms
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U2 - 10.30638/eemj.2017.157
DO - 10.30638/eemj.2017.157
M3 - Article
AN - SCOPUS:85030696681
SN - 1582-9596
VL - 16
SP - 1451
EP - 1456
JO - Environmental Engineering and Management Journal
JF - Environmental Engineering and Management Journal
IS - 7
ER -