TY - JOUR
T1 - A critical review of the recent developments in micro–nano bubbles applications for domestic and industrial wastewater treatment
AU - Sakr, Marwa
AU - Mohamed, Mohamed M.
AU - Maraqa, Munjed A.
AU - Hamouda, Mohamed A.
AU - Aly Hassan, Ashraf
AU - Ali, Jafar
AU - Jung, Jinho
N1 - Publisher Copyright:
© 2021 THE AUTHORS
PY - 2022/8
Y1 - 2022/8
N2 - This review highlights the advantages of using micro–nano bubble (MNB) technology in various applications of wastewater treatment. Initially, the review examines key performance dissimilarities among different types of bubbles toward the treatment process. Specifically, a qualitative and quantitative meta-analysis of the effects of MNBs in the removal of target pollutants found in wastewater from different sources is conducted. A review on the MNBs characterization techniques to identify bubble size, size distribution, and accordingly bubble rising velocity as well as gas mass transfer rates, zeta potential, generation of free radicals, and bubble stability is also included. Moreover, the effect of bubble size on the efficiency of municipal and industrial wastewater treatment processes is evaluated. Finally, the applications of MNBs are investigated to explore their effectiveness in different wastewater treatment processes, such as ozonation, flotation/dissolved air flotation, aeration, and other processes. It is anticipated that the use MNBs could be a promising sustainable and low-cost wastewater treatment technology.
AB - This review highlights the advantages of using micro–nano bubble (MNB) technology in various applications of wastewater treatment. Initially, the review examines key performance dissimilarities among different types of bubbles toward the treatment process. Specifically, a qualitative and quantitative meta-analysis of the effects of MNBs in the removal of target pollutants found in wastewater from different sources is conducted. A review on the MNBs characterization techniques to identify bubble size, size distribution, and accordingly bubble rising velocity as well as gas mass transfer rates, zeta potential, generation of free radicals, and bubble stability is also included. Moreover, the effect of bubble size on the efficiency of municipal and industrial wastewater treatment processes is evaluated. Finally, the applications of MNBs are investigated to explore their effectiveness in different wastewater treatment processes, such as ozonation, flotation/dissolved air flotation, aeration, and other processes. It is anticipated that the use MNBs could be a promising sustainable and low-cost wastewater treatment technology.
KW - Application
KW - Bubble characterization
KW - Mass transfer
KW - Micro–nano bubbles
KW - Wastewater treatment
UR - http://www.scopus.com/inward/record.url?scp=85120450562&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85120450562&partnerID=8YFLogxK
U2 - 10.1016/j.aej.2021.11.041
DO - 10.1016/j.aej.2021.11.041
M3 - Review article
AN - SCOPUS:85120450562
SN - 1110-0168
VL - 61
SP - 6591
EP - 6612
JO - Alexandria Engineering Journal
JF - Alexandria Engineering Journal
IS - 8
ER -