Waste Management Laboratory, Dolphin PG Institute, Manduwala, Chakarata Road, Dehradun, India.
Waste Manag. 2012 May;32(5):979-90. doi: 10.1016/j.wasman.2011.12.002. Epub 2012 Jan 2.
Management of metal pollution associated with E-waste is widespread across the globe. Currently used techniques for the extraction of metals from E-waste by using either chemical or biological leaching have their own limitations. Chemical leaching is much rapid and efficient but has its own environmental consequences, even the future prospects of associated nanoremediation are also uncertain. Biological leaching on the other hand is comparatively a cost effective technique but at the same moment it is time consuming and the complete recovery of the metal, alone by biological leaching is not possible in most of the cases. The current review addresses the individual issues related to chemical and biological extraction techniques and proposes a hybrid-methodology which incorporates both, along with safer chemicals and compatible microbes for better and efficient extraction of metals from the E-waste.
金属污染与电子废物管理在全球范围内广泛存在。目前，从电子废物中提取金属的技术，无论是化学浸出还是生物浸出，都有其自身的局限性。化学浸出速度快、效率高，但也有其自身的环境后果，即使相关纳米修复的未来前景也不确定。另一方面，生物浸出相对来说是一种具有成本效益的技术，但同时也很耗时，而且在大多数情况下，仅通过生物浸出是不可能完全回收金属的。本综述讨论了与化学和生物提取技术相关的个别问题，并提出了一种混合方法，该方法结合了这两种方法，以及更安全的化学物质和兼容的微生物，以从电子废物中更好、更有效地提取金属。
