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Structural study of a lead ( II ) organic complex – a key precursor in a green recovery route for spent lead‐acid battery paste
Author(s) -
Zhang Wei,
Yang Jiakuan,
Zhu Xinfeng,
Sun Xiaojuan,
Yu Wenhao,
Hu Yuchen,
Yuan Xiqing,
Dong Jinxin,
Hu Jingping,
Liang Sha,
Kumar Ramachandran Vasant
Publication year - 2016
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/jctb.4620
Subject(s) - lead–acid battery , leaching (pedology) , lead oxide , chemistry , oxide , triclinic crystal system , lead compound , metal , crystal structure , inorganic chemistry , nuclear chemistry , battery (electricity) , organic chemistry , power (physics) , physics , environmental science , quantum mechanics , soil science , soil water , biochemistry , in vitro
BACKGROUND Lead citrate is an attractive precursor for the preparation of ultrafine leady oxide from the paste in spent lead‐acid batteries through a novel hydrometallurgical process, since the recovered lead oxide could be recycled for the production of new lead acid batteries. RESULTS Two different metal organic complexes were synthesized from lead sulfate from the paste of spent lead‐acid batteries in a leaching solution at two different initial pH values. Single crystals of the two precursors were obtained by conditioning and filtering from the leached solutions, and used for single crystal XRD analysis. At an initial pH of 3.5, the chemical formula of Precursor‐I is deduced to be Pb( C 6 H 6 O 7 )· H 2 O while at an initial pH of 5.2, the chemical formula of Precursor‐ II is Pb 3 ( C 6 H 5 O 7 ) 2 · 3H 2 O . CONCLUSIONS Both Precursor‐I and Precursor‐ II crystallize in the triclinic crystal system, with space group P‐1. This structural study on precursors sheds light on the mechanism of a paste‐to‐paste recovery route for the recovery of spent lead paste. © 2014 Society of Chemical Industry