Biodegradable quaternary ammonium salts for processing iron ores

Weng, Xiaoqing, Nguyen, Anh V., Mei, Guangjun and Yu, Yongfu (2014) Biodegradable quaternary ammonium salts for processing iron ores. American Journal of Analytical Chemistry, 5 10: 646-654. doi:10.4236/ajac.2014.510072

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Author Weng, Xiaoqing
Nguyen, Anh V.
Mei, Guangjun
Yu, Yongfu
Title Biodegradable quaternary ammonium salts for processing iron ores
Journal name American Journal of Analytical Chemistry   Check publisher's open access policy
ISSN 2156-8251
Publication date 2014-07-17
Sub-type Article (original research)
DOI 10.4236/ajac.2014.510072
Open Access Status DOI
Volume 5
Issue 10
Start page 646
End page 654
Total pages 9
Place of publication Irvine, CA, United States
Publisher Scientific Research Publishing
Collection year 2015
Language eng
Formatted abstract
Two biodegradable quaternary ammonium salts were synthesized and used as cationic collectors in processing iron ores by froth flotation. The flotation behaviors of iron minerals with the new biodegradable quaternary ammonium collectors were investigated by micro-flotation tests of quartz (SiO2) and magnetite (Fe3O4). It was observed that the new biodegradable collectors were effective in separating quartz from magnetite by flotation. At the collector concentration of 1 × 10﹣4 mol/L, the recovery of quartz using the M301 and M302 collectors can reach its maximum of 67.97% and 91.18%, respectively. For a wide pH range, they also show good selectivity. By the measuring zeta potentials of the new quaternary ammonium salts, the results show that quaternary ammonium salt is preferred to adsorb on the surface of quartz. The two quaternary ammonium collectors are also determined as readily biodegradable collectors, according to the OECD301B evaluation standard.
Keyword Quaternary ammonium salt
Zeta potential
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
Official 2015 Collection
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Created: Sun, 22 Mar 2015, 20:01:58 EST by Professor Anh Nguyen on behalf of School of Chemical Engineering