TY - JOUR
T1 - Practical limitations of bioaugmentation in treating heavy metal contaminated soil and role of plant growth promoting bacteria in phytoremediation as a promising alternative approach
AU - Kurniawan, Setyo Budi
AU - Ramli, Nur Nadhirah
AU - Said, Nor Sakinah Mohd
AU - Alias, Jahira
AU - Imron, Muhammad Fauzul
AU - Abdullah, Siti Rozaimah Sheikh
AU - Othman, Ahmad Razi
AU - Purwanti, Ipung Fitri
AU - Hasan, Hassimi Abu
N1 - Publisher Copyright:
© 2022 The Authors
PY - 2022/4
Y1 - 2022/4
N2 - Bioaugmentation, the addition of cultured microorganisms to enhance the currently existing microbial community, is an option to remediate contaminated areas. Several studies reported the success of the bioaugmentation method in treating heavy metal contaminated soil, but concerns related to the applicability of this method in real-scale application were raised. A comprehensive analysis of the mechanisms of heavy metal treatment by microbes (especially bacteria) and the concerns related to the possible application in the real scale were juxtaposed to show the weakness of the claim. This review proposes the use of bioaugmentation-assisted phytoremediation in treating heavy metal contaminated soil. The performance of bioaugmentation-assisted phytoremediation in treating heavy metal contaminated soil as well as the mechanisms of removal and interactions between plants and microbes are also discussed in detail. Bioaugmentation-assisted phytoremediation shows greater efficiencies and performs complete metal removal from soil compared with only bioaugmentation. Research related to selection of hyperaccumulator species, potential microbial species, analysis of interaction mechanisms, and potential usage of treating plant biomass after treatment are suggested as future research directions to enhance this currently proposed topic.
AB - Bioaugmentation, the addition of cultured microorganisms to enhance the currently existing microbial community, is an option to remediate contaminated areas. Several studies reported the success of the bioaugmentation method in treating heavy metal contaminated soil, but concerns related to the applicability of this method in real-scale application were raised. A comprehensive analysis of the mechanisms of heavy metal treatment by microbes (especially bacteria) and the concerns related to the possible application in the real scale were juxtaposed to show the weakness of the claim. This review proposes the use of bioaugmentation-assisted phytoremediation in treating heavy metal contaminated soil. The performance of bioaugmentation-assisted phytoremediation in treating heavy metal contaminated soil as well as the mechanisms of removal and interactions between plants and microbes are also discussed in detail. Bioaugmentation-assisted phytoremediation shows greater efficiencies and performs complete metal removal from soil compared with only bioaugmentation. Research related to selection of hyperaccumulator species, potential microbial species, analysis of interaction mechanisms, and potential usage of treating plant biomass after treatment are suggested as future research directions to enhance this currently proposed topic.
KW - Biosorption
KW - Environmental pollution
KW - Phytotechnology
KW - Real scale
KW - Recovery
KW - Separation
UR - http://www.scopus.com/inward/record.url?scp=85131800367&partnerID=8YFLogxK
U2 - 10.1016/j.heliyon.2022.e08995
DO - 10.1016/j.heliyon.2022.e08995
M3 - Review article
AN - SCOPUS:85131800367
SN - 2405-8440
VL - 8
JO - Heliyon
JF - Heliyon
IS - 4
M1 - e08995
ER -
