Positive effects of bio-nano Pd (0) toward direct electron transfer in Pseudomona putida and phenol biodegradation - Details

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Abstract：

This　study　constructed　a　biological-inorganic　hybrid　system　including　Pseudomonas　putida　(P.　putida)　and　bioreduced　Pd　(0)　nanoparticles　(NPs),　and　inspected　the　influence　of　bio-nano　Pd　(0)　on　the　direct　electron　transfer　and　phenol　biodegradation.　Scanning　electron　microscopy　and　energy-dispersive　X-ray　spectroscopy　(SEM-EDX)　showed　that　bio-nano　Pd　(0)　(~10　nm)　were　evenly　dispersed　on　the　surface　and　in　the　periplasm　of　P.　putida.　With　the　incorporation　of　bio-nano　Pd　(0),　the　redox　currents　of　bacteria　in　the　cyclic　voltammetry　(CV)　became　higher　and　the　oxidation　current　increased　as　the　addition　of　lactate,　while　the　highest　increase　rates　of　two　electron　transfer　system　(ETS)　rates　were　63.97%　and　33.79%,　respectively.　These　results　indicated　that　bio-nano　Pd　(0)　could　directly　promote　the　electron　transfer　of　P.　putida.　In　phenol　biodegradation　process,　P.　putida-Pd　(0)−　2　showed　the　highest　k　(0.2992　h　−1　),　μ　m　(0.035　h　−1　)　and　K　i　(714.29　mg/L)　and　the　lowest　apparent　K　s　(76.39　mg/L).　The　results　of　kinetic　analysis　indicated　that　bio-nano　Pd　(0)　markedly　enhanced　the　biocatalytic　efficiency,　substrate　affinity　and　the　growth　of　cells　compared　to　native　P.　putida.　The　positive　effects　of　bio-nano　Pd　(0)　to　the　electron　transfer　of　P.　putida　would　promote　the　biodegradation　of　phenol.　©　2018　Elsevier　Inc.

Keyword：

Bio-nano Pd (0); Biodegradation; Nanoparticles; Phenol; Pseudomonas putida

Community：

[ 1 ] [Niu, Z.]The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou, 510006, China
[ 2 ] [Jia, Y.]The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou, 510006, China
[ 3 ] [Chen, Y.]The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou, 510006, China
[ 4 ] [Hu, Y.]The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou, 510006, China
[ 5 ] [Chen, J.]The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou, 510006, China
[ 6 ] [Chen, J.]School of Life Sciences, Qufu Normal University, Qufu, 273165, China
[ 7 ] [Lv, Y.]The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou, 510006, China
[ 8 ] [Lv, Y.]College of Environment & Resources, Fuzhou University, Fuzhou, 350116, China

Reprint 's Address：

[Chen, Y.]The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, School of Environment and Energy, South China University of Technology, Guangzhou Higher Education Mega CentreChina

Email：

chenyc@scut.edu.cn

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Source ：

Ecotoxicology and Environmental Safety

ISSN： 0147-6513

Year： 2018

Volume： 161

Page： 356-363

4 . 5 2 7

JCR@2018

6 . 2 0 0

JCR@2023

ESI HC Threshold：222

JCR Journal Grade：1

CAS Journal Grade：2

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WoS CC Cited Count：

SCOPUS Cited Count： 20

ESI Highly Cited Papers on the List： 0 Unfold All

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Chinese Cited Count：

30 Days PV： 0

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