Bromine recovery from crude bromine salts by-products of waste printed circuit boards smelting - Details

Author：

Zhao, H. (Zhao, H..) | Zhang, Q. (Zhang, Q..) | Li, G. (Li, G..) | Zhang, X. (Zhang, X..) | Pan, D. (Pan, D..)

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EI Scopus SCIE

Abstract：

A　green　and　effective　process　for　bromine　recovery　from　crude　bromine　salts　by-products　(CBSBPs)　of　waste　printed　circuit　boards　smelting　was　developed.　Over　99　%　of　bromine　was　first　converted　to　Br2(l)　under　optimal　acid　oxidation　conditions　(pH　0,　NaClO3　10　g/L,　stirring　rate　200　rpm,　time　30　min).　98.25　%　of　the　as-formed　Br2(l)　can　be　then　purified　and　recovered　by　precisely　controlling　the　extraction　(single　extraction　O/A　1.5,　multiple　extraction　O/A　1/3,　extract　stages　4,　extraction　time　3　min,　and　vibration　time　2　min)　and　stripping　(Na2CO3　20.5　g/L,　CO(NH2)2　3.15　g/L,　stripping　A/O　1/3,　stripping　time　3　min,　stripping　temperature　55　°C)　conditions.　The　purity　of　the　recovered　NaBr　exceeds　99　%.　Moreover,　zero　wastewater　discharge　and　the　remaining　stripping　organic　phase　can　be　repeatable　used　over　15　times.　The　proposed　method　is　a　sustainable,　green,　and　closed-loop　process　for　bromine　recovery　from　CBSBPs.　©　2023

Keyword：

Acid oxidation conversion Crude bromine salts by-products Waste printed circuit boards Extraction and stripping Bromine recovery and purification

Author Community：

[ 1 ] [Zhao H.]College of Materials Science and Engineering, Beijing University of Technology, No. 100, Pingleyuan Street, Chaoyang District, Beijing, 100124, China
[ 2 ] [Zhao H.]Faculty of Materials and Manufacturing, Beijing University of Technology, No. 100, Pingleyuan Street, Chaoyang District, Beijing, 100124, China
[ 3 ] [Zhang Q.]College of Materials Science and Engineering, Beijing University of Technology, No. 100, Pingleyuan Street, Chaoyang District, Beijing, 100124, China
[ 4 ] [Zhang Q.]Faculty of Materials and Manufacturing, Beijing University of Technology, No. 100, Pingleyuan Street, Chaoyang District, Beijing, 100124, China
[ 5 ] [Li G.]College of Materials Science and Engineering, Beijing University of Technology, No. 100, Pingleyuan Street, Chaoyang District, Beijing, 100124, China
[ 6 ] [Li G.]Faculty of Materials and Manufacturing, Beijing University of Technology, No. 100, Pingleyuan Street, Chaoyang District, Beijing, 100124, China
[ 7 ] [Zhang X.]College of Materials Science and Engineering, Beijing University of Technology, No. 100, Pingleyuan Street, Chaoyang District, Beijing, 100124, China
[ 8 ] [Zhang X.]Faculty of Materials and Manufacturing, Beijing University of Technology, No. 100, Pingleyuan Street, Chaoyang District, Beijing, 100124, China
[ 9 ] [Pan D.]College of Materials Science and Engineering, Beijing University of Technology, No. 100, Pingleyuan Street, Chaoyang District, Beijing, 100124, China
[ 10 ] [Pan D.]Faculty of Materials and Manufacturing, Beijing University of Technology, No. 100, Pingleyuan Street, Chaoyang District, Beijing, 100124, China

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Source ：

Separation and Purification Technology

ISSN： 1383-5866

Year： 2023

Volume： 320

8 . 6 0 0

JCR@2022

ESI Discipline： CHEMISTRY;

ESI HC Threshold：20

Cited Count：

WoS CC Cited Count：

SCOPUS Cited Count： 3

ESI Highly Cited Papers on the List： 0 Unfold All

WanFang Cited Count：

Chinese Cited Count：

30 Days PV： 1

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