University of California Los Angeles Effective Degradation Doxycycline Presentation The article will be attached as photos below. I need a presentation sli

University of California Los Angeles Effective Degradation Doxycycline Presentation The article will be attached as photos below. I need a presentation slides about the article. and one page summery.please anything needs a definition, define in the summary page. I 프
Accepted: 29 April 2019
Revised: 6 April 2019
Received: 8 December 2018
DOI: 10.1002/ep.13259
id
ENVIRONMENTAL PROGRESS
& SUSTAINABLE ENERGY
REMEDIATION TREATMENT
Effective degradation of doxycycline by photocatalytic
BIVO4-H2O2 under visible light
Yanbin Tong2.2 | Jing Kang? | Jimin Shen? | Zhonglin Chen? | Shengxin Zhao? |
Liqun Sun? | Weiqiang Wang?
1
2
Abstract
1State Key Laboratory of Urban Water
Resource and Environment, School of
Environment, Harbin Institute of Technology,
Harbin, China
Doxycycline (DOX) is a type of antibiotic that exists in the environment and is desired to
be effectively removed. Herein, DOX was degraded by photocatalytic BiVO4-H2O2 and
2Heilongjiang Provincial Key Laboratory of
Oilfield Applied Chemistry and Technology,
School of Chemical Engineering, Daqing
Normal University, Daqing, China
Correspondence
Zhonglin Chen and Shengxin Zhao, State Key
Laboratory of Urban Water Resource and
Environment, School of Environment, Harbin
Institute of Technology, Harbin 150090,
China.
Email: zhonglinchen@163.com (Z. C.) and
Email: shengxin_in_zhao@163.com (S. Z.)
photocatalytic BiVO4 systems in this paper. Under the same degradation conditions, the
effects of the two systems on DOX degradation were compared. The effect of the solu-
tion pH on degradation of DOX was examined in the range of 3.5-11.5. The optimum
pH values were 7.5 and 11.5 for light-BiVO4-H2O2 and light-BiVO4 systems, respec-
tively, and their removal rates were 96.27 and 98.84%, respectively. The optimum tem-
perature of degradation was both 40°C by two methods, and the removal rates were
97.03 and 53.43%, respectively. The optimum dosage of BiVO4 was both 70 mg by two
methods, and the removal rates were 95.92 and 52.52%, respectively. The degradation
effect by light-BIVO4-H2O2 method was better than that by light-BIVO4 method. The
possible photocatalytic reaction mechanism was also discussed briefly based on ESR
spectrum. DMPO trapping experiment was applied to reveal the production of hydroxyl
radicals. These works provide promising constructs at dealing with the DOX water by
photocatalytic degradation.
Funding information
National Key R&D Program, Grant/Award
Number: 2017YFA0207203; Harbin Institute
of Technology, Grant/Award Number:
QA201817; State Key Laboratory of Urban
Water Resource and Environment; National
Key R&D Program of China, Grant/Award
Number: 2017YFA0207204
KEYWORDS
doxycycline, H2O2, m-BiVO4, photocatalytic degradation
1 | INTRODUCTION
effectiveness against gram-positive and gram-negative bacteria.? DOX
has been overused and has entered environmental matrices. It can accel-
erate the spread of resistant bacteria, reduce human immunity, and pose
Pharmaceuticals and personal care products (PPCPs) have attracted a
great deal of attention as typical environmental pollutants in recent years.
Its research is mainly focused on degradation products, degradation
methods, toxicological analysis, detection methods, and distribution in
the environment. PPCPs can enter the environment through the animal
husbandry industries, hospitals, and the sewages of daily life.2.3 The half
of PPCPs contamination is approximately antibiotics. The reason is that
about 30-90% of antibiotics are weakly absorbed. Doxycycline (DOX),
as one of the most important broad-spectrum antibiotics, which is better
than traditional tetracycline antibiotics in terms of antibacterial effect, tis-
sue permeability, and oral bioavailability. DOX can cure many bacterial
infections by interfering with bacterial protein production.”. It has high
a threat to the environment. 9-12 Spongberg et al analyzed 34 PPCPs in
86 individual water samples that were collected from surface water and
coastal locations in Costa Rica. DOX was most frequently detected. The
frequency was 77%.13 Lindberg et al made a test on the antibiotic residue
for the wastewater in Sweden. DOX was also frequently detected. The
frequency was 63%.14 Due to the presence and the risks of DOX in
some water bodies, it is important to remove DOX from water. The
existing methods mainly include electrocoagulation, adsorption,”
19 fenton, and photodegradation technique.”
ronmentally friendly technique.21 Since visible light accounts for 52%
Photodegradation technique is an effective, economical, and envi
16-18
15
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© 2019 American Institute of Chemical Engineers
wileyonlinelibrary.com/journal/ep
https://doi.org/10.1002/ep. 13259
Environ Prog Sustainable Energy, 2019:38:e13259

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