PbSO4、PbO在柠檬酸钠溶液中溶解行为.pdf

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2014年第33卷第2期
CHEMICAL INDUSTRY AND ENGINEERING PROGRESS
333
研究开发
PbSO4、PbO在柠檬酸钠溶液中溶解行为
何东升2,李巧双2,杨典奇2,杨聪2,王贤晨2,杨家宽
(华中科技大学环境科学与工程学院,湖北武汉430074:2武汉工程大学环境与城市建设学院,湖北武汉
430073)
摘要:考察了溶解时间、溶解温度、柠檬酸納浓度以及柠檬酸加入量对PbSO4PbO在柠檬酸钠溶液中溶解行为
影响。结果表明,PbO溶解0.5b即可达到溶解平衡,而PbSO溶解率则会在达到最大值51.16%后随溶解时间延
长而降低。随溶解温度升高,PbSO4溶解率増大,PbO溶解率降低,最大降低37.98%;PbSO4、PbO溶解率均会
随着柠檬酸納浓度的提高而増大,且前者增大趋势更明显;増大柠檬酸加入蚤,PbSO溶解率减小至6.39%,PbO
溶解率则可増大至97.32%。研究结果可为柠檬酸法处理废铅酸蓄电池铅膏工艺提供基础性数据和理论支持
关键词:硫酸铅;氧化铅;柠檬酸納;溶解
中图分类号:TF812
文献标志码:A
文章编号:1000-6613(2014)02-0333-04
DO:10.39695 J.Issn.10006613.2014.02.012
Dissolution behavior of Pbsoa and Pbo in sodium citrate solution
HE Dongsheng: 2, LI Qiaoshuang, YANG Diangi, YANG Cong, WANG Xianchen, YANG akuan
( School of Environmental Science and Engineering, Huazhong University of Science & Technology, Wuhan 430074
Hubei, China: School of Environment and Civil Engineering, Wuhan Institute oftechnology, Wuhan 430073, Hubei
China
Abstract: Effects of dissolution time, dissolution temperature, the concentration of sodium citrate and
the addition amount of citric acid on dissolution behaviors of Pbso and Pbo in sodium citrate solution
were investigated. The results showed that Pbo dissolution rate reached 51 I6% after dissolving for
0.5 h, and with the increase of dissolution time, Pbso dissolution rate first increased and then
decreased. Pbso dissolution rate increased and Pbo dissolution rate decreased 37.98% with the
increase of dissolution temperature, however, both of them increased when increasing the concentration
of citric odium. With the increase of citric acid addition, Pbso% dissolution rate decreased to 6.39%
by contrast, Pbo dissolution rate obviously increased, reached 97.32% The results have provided
basic data and theoretical support for new technology of recovering lead from used lead-acid battery
with citric acid-sodium citrate solution
Key words: lead sulfate; lead oxide; sodium citrate; dissolution
随着铅酸蓄电池和再生铅行业快速发展,我国
成为全球铅酸蓄电池生产、消费和出口大国们。铅收稿日期:2013.0903,修改稿日期:203106
酸蓄电池产量越大,报废的铅酸蓄电池越多。安全基金项目:教育部新世纪人オ文持计划NCET0092)、湖北省自
然科学基金重点项目(杰出青年基金,201ICDA083)、武汉工程大学
地回收、处理和再利用废铅酸蓄电池迫在眉睫。废
科学研究基金(13105043)及武汉工程大学第八届校长基金(2013061)。
铅酸蓄电池回收铅主要有三类方法:火法、湿法和第一作者:何东升(1979),男,博士,副教授,从事固废处理与资
联合法。火法能耗高、污染物排放量大2到:湿法消
源化利用研究。E- mail withes(
联系人:杨家宽,教授,博
上生导师,从事固废资源化与材料回收研究。E- mail jkyang@mai
除了铅尘和SO2排放的问题,但工艺流程长、设备 hust. edu. cn