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SUMMARY:Tripartite Synergy in a Baffled Duckweed Reactor for 2-Chloro-4-Ni
 troaniline Remediation: Metabolic Pathways\, Microbial Dynamics\, and Bioc
 har Valorization
DTSTART;VALUE=DATE-TIME:20261001T120000Z
DTEND;VALUE=DATE-TIME:20261001T121500Z
DTSTAMP;VALUE=DATE-TIME:20260915T180329Z
UID:indico-contribution-2928@cern.ch
DESCRIPTION:Speakers: Ahmed  Tawfik  (Kuwait university\, college of life 
 sciences )\nThis study presents a novel\, integrated treatment approach fo
 r petrochemical wastewater laden with 2-chloro-4-nitroaniline (2-Cl-4-NA) 
 and heavy metals using a baffled duckweed reactor (BDR). Unlike traditiona
 l systems\, this BDR leverages a unique tripartite synergy between Lemna g
 ibba\, a specialized symbiotic bacterial community\, and in-situ photocata
 lytic oxidation. At an optimized hydraulic retention time (HRT) of 12 days
 \, the system achieved a superior 2-Cl-4-NA removal efficiency of 84.3%. F
 or the first time\, the metabolic pathway in this integrated system was ma
 pped\, identifying 4-amino-3-chlorophenol and 2-amino-3-chloro-5-hydroxyph
 enol as key intermediates. The mechanical novelty lies in the dual-role of
  L. gibba: it facilitates (H2O2)-mediated photocatalytic degradation and p
 rovides essential oxygen to the rhizosphere\, stimulating the production o
 f bacterial monooxygenase and dioxygenase enzymes for ring cleavage. Concu
 rrently\, the bacteria break down the toxic parent compound into metabolit
 es that the duckweed subsequently assimilates as a carbon source. High-thr
 oughput sequencing confirmed a specialized microbial consortium\, dominate
 d by Proteobacteria and Bacteroidetes\, with functional genera such as Def
 luviimonas and Thioclava driving the degradation. These findings establish
  the BDR as a highly efficient\, sustainable\, and multi-pathway bioremedi
 ation technology for complex industrial pollutants. The harvested biomass 
 was used for biochar productivity for further application (0.77 g biochar/
 gbiomass).\n\nhttps://indico.unina.it/event/117/contributions/2928/
LOCATION:Department of Agricultural Sciences of the University of Napoli F
 ederico II\, Portici\, Italy Sala Cinese
URL:https://indico.unina.it/event/117/contributions/2928/
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