نتایج جستجو برای: acid leaching tail solution

تعداد نتایج: 1231024  

2008
R.N.G. Guerra F. Pedrosa F. Margarido

A hydrometallurgical process for recycling spent Zn-MnO2 batteries was developed, involving leaching with sulfuric acid, purification by precipitation and metals separation for further recovery. Leaching of zinc oxide was easily attained while for manganese oxide was rather difficult depending on temperature and acid concentration. At 90oC and with the liquid/solid ratio of 20 L/kg, more than 9...

2006
A. Ansari Mahabadi M. A. Hajabbasi H. Khademi H. Kazemian

In recent years, natural substances such as zeolite have been used to absorb heavy metals in soil in an attempt to decrease their availability to plants. Compared to other techniques, the use of zeolite is fast, clean, and inexpensive. This research was carried out to investigate the effects of an Iranian natural zeolite (clinoptilolite) on stabilizing Cd-contaminated soil treated with 0.01 M C...

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