Abstract:
An in-depth understanding of the remediation of
polluted water via Ecological Floating Beds
(EFBs) is essential, as they are a popular
bioremediation technology. The present study
intends to identify the existing knowledge on the
application of EFBs for nutrient pollutants
removal and to provide insights to enhance the
efficiency of EFBs performance. By following
Preferred Reporting Items for Systematic Review
and Meta-analysis (PRISMA) guidelines, 55
articles were retained after an automatic, manual
screening and eligibility assessment. The selected
articles were subjected to descriptive analysis and
keyword co-occurrence analysis using Biblioshiny
R and VOSviewer software to identify knowledge
in terms of pollutant type, removal mechanism,
and
performance
enhancement
means.
Accordingly, the key knowledge identified is (1)
the main nutrient pollutants removed by EFBs are
nitrogen and phosphorous, (2) the promising
pathways of nutrient removal are microbial
degradation and plant uptake, (3) Proteobacteria
is the most abundant bacterial phyla that are
involved in nitrogen removal via denitrification
(4) the performance of EFBs can be enhanced with
the addition of various materials, whereas Zeolite
showed profound effects in nutrient removal. The
knowledge identified in this study would serve as
a source for scholars and many stakeholders who
are interested in implementing EFBs for pollution
remediation.
