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Sono-oxidation treatment of hazardous ABS/PC surface for its selective separation from ESR styrene plastics

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Abstract
This study reports the selective hydrophilization of the ABS/PC blend surface using the peroxide-sonochemical system and then
its selective separation by froth flotation technique from other ABS-based plastics (ABS, ABS/PMMA) and PS/HIPS in electronic
shredder residue (ESR). FT-IR and XPS measurements confirm that the hydrophilic moiety development on the ABS/PC
surface led to increasing the wettability of ABS/PC and then decreased its floatability. The confocal scanning results also support
the enhancement of microscale roughness of the treated ABS/PC surface. The enhanced surface roughness is attributed to the
oxidative process which degrades hydrophobic moieties and promotes hydrophilic functional groups on the ABS/PC surface
using commercial oxidant peroxide and ultrasound. This study also investigated removal of Br-containing compounds on the
ABS/PC surface. The optimum conditions for selectively ABS/PC separation are peroxide concentration 2%, power cycle 70%,
treatment time 5 min, temperature 50 °C, floating agent concentration 0.4 mg/L, flotation time 2 min, and airflow rate 0.5 L/min.
ABS/PC was selectively separated from ESR styrene plastics with high recovery and purity of 98.9% and 99.8%, respectively.
Hence, the developed novel surface treatments having removal of hazardous Br chemicals and none-formation of secondary
pollutants should be applied for upgrading plastic recycling quality.
Author(s)
이병규Nguyen T.T TrucHung A.L.
Issued Date
2021
Type
Article
Keyword
Aquatic PollutionAtmospheric Protection/Air Quality Control/Air PollutionEarth and Environmental ScienceEcotoxicologyEnvironmentEnvironmental ChemistryEnvironmental HealthgeneralGreen technologyWaste and Biomass Management & ValorizationWaste Water TechnologyWater ManagementWater Pollution Control
DOI
10.1007/s11356-020-11796-8
URI
https://oak.ulsan.ac.kr/handle/2021.oak/9264
https://ulsan-primo.hosted.exlibrisgroup.com/primo-explore/fulldisplay?docid=TN_cdi_gale_infotracacademiconefile_A662845179&context=PC&vid=ULSAN&lang=ko_KR&search_scope=default_scope&adaptor=primo_central_multiple_fe&tab=default_tab&query=any,contains,Sono-oxidation%20treatment%20of%20hazardous%20ABS%2FPC%20surface%20for%20its%20selective%20separation%20from%20ESR%20styrene%20plastics&offset=0&pcAvailability=true
Publisher
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
Location
독일
Language
영어
ISSN
0944-1344
Citation Volume
28
Citation Number
19
Citation Start Page
24771
Citation End Page
24784
Appears in Collections:
Engineering > Civil and Environmental Engineering
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