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溴代阻燃剂对氧化亚铁硫杆菌浸提废旧电脑主板覆层铜的影响

廖广丹 谌 书 苏 涛 傅开彬

廖广丹, 谌 书, 苏 涛, 傅开彬. 溴代阻燃剂对氧化亚铁硫杆菌浸提废旧电脑主板覆层铜的影响[J]. 环境科学研究, 2014, 27(11): 1272-1277.
引用本文: 廖广丹, 谌 书, 苏 涛, 傅开彬. 溴代阻燃剂对氧化亚铁硫杆菌浸提废旧电脑主板覆层铜的影响[J]. 环境科学研究, 2014, 27(11): 1272-1277.
LIAO Guang-dan, CHEN Shu, SU Tao, FU Kai-bin. Study on the Influence of Brominated Flame Retardants on the Bio-Leaching of Copper from Waste Computer Motherboards[J]. Research of Environmental Sciences, 2014, 27(11): 1272-1277.
Citation: LIAO Guang-dan, CHEN Shu, SU Tao, FU Kai-bin. Study on the Influence of Brominated Flame Retardants on the Bio-Leaching of Copper from Waste Computer Motherboards[J]. Research of Environmental Sciences, 2014, 27(11): 1272-1277.

溴代阻燃剂对氧化亚铁硫杆菌浸提废旧电脑主板覆层铜的影响

基金项目: 国家自然科学基金项目(21177101);教育部科学技术研究重点项目(211165);环境地球化学国家重点实验室开放基金(SKLEG8003)

Study on the Influence of Brominated Flame Retardants on the Bio-Leaching of Copper from Waste Computer Motherboards

  • 摘要: 以破碎至10~20目(0.84~2.00 mm)的废旧电脑主板颗粒为试验材料,分为未处理(未去除溴代阻燃剂的主板颗粒)、处理(去除30%溴代阻燃剂的主板颗粒)、加萃取物(处理主板颗粒和萃取物)、对照4组. 以CCl4作为萃取剂,采用固液萃取技术,分析了在微生物作用下不同处理组中ρ(Cu2+)、ρ(Fe3+)、Eh(氧化还原电位)和pH的变化,以考察溴代阻燃剂对氧化亚铁硫杆菌(Thiobacillus ferrooxidans)浸Cu率的影响. 结果表明:随着浸提时间的增加,氧化亚铁硫杆菌对未处理、处理和加萃取物3组的浸Cu率不同,其中处理组最好,加萃取物组最差. 浸提过程中,ρ(Fe3+)、Eh和pH与微生物活性、浸Cu率显著相关,表现为微生物活性越好,ρ(Cu2+)和pH越大,ρ(Fe3+)和Eh越小. 浸提24和168 h,处理组的浸Cu率比未处理组分别提高了14.11%和17.37%; 而加萃取物组的浸Cu率比未处理组分别降低了27.69%和21.67%. 表明废旧电脑主板中的溴代阻燃剂是影响微生物浸Cu率的重要因素之一. 为进一步提高浸Cu率,必须考虑溴代阻燃剂对微生物生长的影响.

     

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出版历程
  • 收稿日期:  2013-11-02
  • 修回日期:  2014-06-13
  • 刊出日期:  2014-11-25

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