TY - JOUR
T1 - A study on novel coupled membrane bioreactor with electro oxidation for biofouling reduction
AU - Vasanthapalaniappan, Kamalakannan
AU - Palani, Kavitha
AU - Saravanabhavan, Shanmuga Sundar
AU - Jonna, Narendranath
AU - Pounsamy, Maharaja
AU - Natarajan, Kannan
AU - Huh, Yun Suk
AU - Natesan, Balasubramanian
N1 - Funding Information:
The authors acknowledge the financial support given by the Department of Science and Technology (DST), India, vide letter numbers DST/TM/WTI/2K12/65(G), dt: 26.06.2013 and DST/INT/ Korea/P-47, dt: 18.05.2018.
Publisher Copyright:
© 2021 Korean Society of Environmental Engineers.
PY - 2021/8
Y1 - 2021/8
N2 - The present study focuses on a novel method to integrate the electro-oxidation process with membrane bioreactor to reduce biofouling and increase the biodegradability index. Here, we used electro-oxidation as pretreatment with membrane bioreactor operating at a current density of 1.5 mA/cm2 with hydraulic retention time at six h. The mixed liquor suspended solids concentration was maintained constant at 3,200 mg/L throughout the experiment for 30 days. The results obtained were promising with the percentage removal of COD, TOC, total nitrogen, and chlorides were in the range of 97%, 90%, 94%, and 15%, respectively, which was comparatively higher than the existing membrane bioreactor. The biodegradable index of treated water was higher, reaching a maximum of 0.6, which is remarkably high compared with 0.3 in a membrane bioreactor. The integrated electro-oxidation process was efficient for the complete removal of pollutants from wastewater, which was confirmed using gas chromatography. In addition, the phytotoxicity test showed a significantly higher quality of treated water compared with that of raw tannery effluent. Hence, our proposed integrated electro-oxidation process can be used to decrease biofouling with increased biodegradability index as a replacement for MBR.
AB - The present study focuses on a novel method to integrate the electro-oxidation process with membrane bioreactor to reduce biofouling and increase the biodegradability index. Here, we used electro-oxidation as pretreatment with membrane bioreactor operating at a current density of 1.5 mA/cm2 with hydraulic retention time at six h. The mixed liquor suspended solids concentration was maintained constant at 3,200 mg/L throughout the experiment for 30 days. The results obtained were promising with the percentage removal of COD, TOC, total nitrogen, and chlorides were in the range of 97%, 90%, 94%, and 15%, respectively, which was comparatively higher than the existing membrane bioreactor. The biodegradable index of treated water was higher, reaching a maximum of 0.6, which is remarkably high compared with 0.3 in a membrane bioreactor. The integrated electro-oxidation process was efficient for the complete removal of pollutants from wastewater, which was confirmed using gas chromatography. In addition, the phytotoxicity test showed a significantly higher quality of treated water compared with that of raw tannery effluent. Hence, our proposed integrated electro-oxidation process can be used to decrease biofouling with increased biodegradability index as a replacement for MBR.
UR - https://www.scopus.com/pages/publications/85117892879
UR - https://www.scopus.com/pages/publications/85117892879#tab=citedBy
U2 - 10.4491/eer.2020.039
DO - 10.4491/eer.2020.039
M3 - Article
AN - SCOPUS:85117892879
SN - 1226-1025
VL - 26
JO - Environmental Engineering Research
JF - Environmental Engineering Research
IS - 4
M1 - 200039
ER -