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@ARTICLE{Mlih:875324,
author = {Mlih, Rawan and Bydalek, Franciszek and Klumpp, Erwin and
Yaghi, Nader and Bol, Roland and Wenk, Jannis},
title = {{L}ight-expanded clay aggregate ({LECA}) as a substrate in
constructed wetlands – {A} review},
journal = {Ecological engineering},
volume = {148},
issn = {0925-8574},
address = {Amsterdam [u.a.]},
publisher = {Elsevier Science},
reportid = {FZJ-2020-01954},
pages = {105783 -},
year = {2020},
abstract = {Light expanded clay aggregates (LECA) have been
increasingly used as substrate material for constructed
wetlands given their phosphate removal capacity, mechanical
strength, hydraulic conductivity and their plant rooting and
biofilm growth supporting structure. This review summarizes
the current literature on LECA-based constructed wetlands.
Removal performances for main wastewater parameters
phosphate, nitrogen species, suspended solids and oxygen
demand are tabulated. Both, physical and biological water
purification processes in LECA wetlands are discussed.
Additional emphasis is on design and layout of LECA wetlands
for different types of wastewater, under different climatic
conditions and to improve treatment performance in general.
LECA life cycle considerations include sourcing, production
energy demand, reuse and recycling options for spent wetland
substrates, for example as soil amendment. Research and
development opportunities were identified for structural and
compositional LECA modification to obtain tailored
substrates for the use in water treatment and specific
treatment tasks. Beyond traditional wastewater contaminants
the fate of a wider range of contaminants, including organic
trace contaminants, needs to be investigated as high Fe, Al
and Ca oxides content of LECA substrates provide adsorptive
sites that may facilitate further biological interactions of
compounds that are otherwise hard to degrade.},
cin = {IBG-3},
ddc = {690},
cid = {I:(DE-Juel1)IBG-3-20101118},
pnm = {255 - Terrestrial Systems: From Observation to Prediction
(POF3-255)},
pid = {G:(DE-HGF)POF3-255},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000536510100005},
doi = {10.1016/j.ecoleng.2020.105783},
url = {https://juser.fz-juelich.de/record/875324},
}