化学沉淀法去除化学镀镍废液中磷的工艺研究
Study on removal of phosphorus from spent electroless nickel plating bath by chemical precipitation
崔作兴 1杨晓杰 2李学田 2邵忠财2
作者信息
- 1. 辽宁理工职业大学汽车学院,辽宁 锦州 121007
- 2. 沈阳理工大学环境与化学工程学院,辽宁 沈阳 110159
- 折叠
摘要
[目的]对化学镀镍废液中的含磷物质进行正确处理和有效回收是实现可持续发展的有效策略.[方法]采用化学沉淀法处理化学镀镍废液,使其中的磷以羟基磷灰石(HAP)沉淀形式得以回收.研究了反应温度、初始pH及Ca/P比(指硝酸钙与废液中磷的质量比)对磷去除率的影响,通过正交试验优化工艺参数.[结果]在温度为75℃、初始pH为12及Ca/P比为1.67 的条件下处理后,化学镀镍废液的磷去除率达到了99.998%,并且所得沉淀为HAP.[结论]采用本工艺可有效去除化学镀镍废液中的磷,并且随之产生的HAP有望得以回收利用.
Abstract
[Introduction]Proper treatment and effective recycling of phosphorus-containing compound in spent electroless nickel plating bath is an effective strategy to achieve sustainable development.[Method]The spent electroless nickel plating bath was treated by chemical precipitation to realize the recyling of phosphorus in the form of hydroxyapatite(HAP).The effects of reaction temperature,initial pH,and Ca/P ratio(i.e.mass ratio of calcium nitrate to phosphorus in spent electroless nickel plating bath)on the removal rate of phosphorus were studied.The process paramters were optimized by orthogonal test.[Result]After being treated at temperature 75 ℃,intial pH 12,and Ca/P ratio 1.67,the removal rate of phosphrous was up to 99.998%,and the obtained precipitate was HAP.[Conclusion]The phosphrous can be effectively removed from the spent electroless nickel plating bath after being treated by the given method,and the HAP produced during the treatment is expected to be recycled.
关键词
化学镀镍废液/化学沉淀法/磷/去除率Key words
spent electroless nickel plating bath/chemical precipitation/phosphorus/recovery rate引用本文复制引用
出版年
2024
NETL
NSTL
万方数据