TY - JOUR
T1 - Intimately coupling photocatalysis with phenolics biodegradation and photosynthesis
AU - Zhong, Nianbing
AU - Yuan, Jilin
AU - Luo, Yihao
AU - Zhao, Mingfu
AU - Luo, Binbin
AU - Liao, Qiang
AU - Chang, Haixing
AU - Zhong, Dengjie
AU - Rittmann, Bruce E.
N1 - Funding Information:
We would like to thank ceshi100 (https://www.ceshi100.com/), China, for technical assistance with characterization of the TiO 2 -based photocatalyst. We acknowledge the service of Biomarker Technologies, Beijing, China, for the 16S rDNA sequencing and metabolite analyses. This work was supported in part by the National Natural Science Foundation of China (51876018, 51806026) and the Scientific and Technological Research Program of Chongqing Municipal Education Commission of China (KJQN201801117). N.Z. was supported by the Entrepreneurship and Innovation Support Program for Chongqing Overseas Returnees.
Publisher Copyright:
© 2021 Elsevier B.V.
PY - 2021/12/1
Y1 - 2021/12/1
N2 - We developed and demonstrated a novel intimately coupled photocatalysis and biodegradation (ICPB) system. The ICPB system was comprised of photocatalytic optical hollow-fibers (POHFs) coated with Ag-loaded GeO2 and N-doped TiO2 photocatalyst, along with a biofilm that included phototrophic and heterotrophic microorganisms. The POHFs exhibit high UV–visible photocatalytic activity to degrade phenolic compounds rapidly and stably, decrease toxicity, generate readily biodegradable products, and emit visible light for biofilm growth and O2 production by phototrophs. O2 produced by the phototrophs was transferred to the POHFs, helping generate hydroxyl free radicals for photocatalysis. The biofilm, which became enriched in Rhodococcus and Pseudomonas, maintained rapid and stable biodegradation of photocatalytic products from the phenolics. Thus, the synergism among photocatalysis, biodegradation, and photosynthesis in the novel ICPB system provided an efficient means to rapidly and sustainably degraded and mineralized high concentrations of phenolic compounds.
AB - We developed and demonstrated a novel intimately coupled photocatalysis and biodegradation (ICPB) system. The ICPB system was comprised of photocatalytic optical hollow-fibers (POHFs) coated with Ag-loaded GeO2 and N-doped TiO2 photocatalyst, along with a biofilm that included phototrophic and heterotrophic microorganisms. The POHFs exhibit high UV–visible photocatalytic activity to degrade phenolic compounds rapidly and stably, decrease toxicity, generate readily biodegradable products, and emit visible light for biofilm growth and O2 production by phototrophs. O2 produced by the phototrophs was transferred to the POHFs, helping generate hydroxyl free radicals for photocatalysis. The biofilm, which became enriched in Rhodococcus and Pseudomonas, maintained rapid and stable biodegradation of photocatalytic products from the phenolics. Thus, the synergism among photocatalysis, biodegradation, and photosynthesis in the novel ICPB system provided an efficient means to rapidly and sustainably degraded and mineralized high concentrations of phenolic compounds.
KW - Biodegradation
KW - Biofilm
KW - Intimate coupling
KW - Optical hollow-fibers
KW - Phenolic compounds
KW - Photocatalysis
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U2 - 10.1016/j.cej.2021.130666
DO - 10.1016/j.cej.2021.130666
M3 - Article
AN - SCOPUS:85108098913
SN - 1385-8947
VL - 425
JO - Chemical Engineering Journal
JF - Chemical Engineering Journal
M1 - 130666
ER -