Removal of heavy metals and cyanide from gold mine waste-water by adsorption and electric adsorption

2015 ◽  
Vol 91 (9) ◽  
pp. 2539-2544 ◽  
Author(s):  
Yonghui Song ◽  
Siming Lei ◽  
Jun Zhou ◽  
Yuhong Tian
Keyword(s):  
Waste Water ◽  
Heavy Metals ◽  
Mine Waste ◽  
Gold Mine ◽  
Removal Of Heavy Metals

scholarly journals REMOVAL OF HEAVY METALS FROM WASTE WATER BY USING A NATURAL AND BIODEGRADABLE ADSORBENT BASED ON PRUNUS AVIUM L. STEMS AS ADSORBENTS.

2016 ◽  
Vol 4 (12) ◽  
pp. 441-449
Author(s):  
Ali Mcheik ◽  
◽  
Wassef ElKhatib ◽  
Akram Hijazi ◽  
Kamal Hariri ◽  
...  
Keyword(s):  
Waste Water ◽  
Heavy Metals ◽  
Prunus Avium ◽  
Removal Of Heavy Metals ◽  
Prunus Avium L

Case Studies of Wetland Filtration of Mine Waste Water in Constructed and Naturally Occurring Systems in Northern Australia

1994 ◽  
Vol 29 (4) ◽  
pp. 257-265 ◽  
Author(s):  
B. N. Noller ◽  
P. H. Woods ◽  
B. J. Ross
Keyword(s):  
Waste Water ◽  
Case Studies ◽  
Mine Waste ◽  
Waste Rock ◽  
Typha Domingensis ◽  
Gold Mine ◽  
Northern Australia ◽  
Runoff Water ◽  
Naturally Occurring ◽  
Mine Sites

A problem common to mines operating in the tropics is the disposal of water, which may be alkaline, acidic, or contain toxic elements such as arsenic or cadmium. The availability of year-round water supply at many mine sites in Northern Australia, particularly from pit dewatering, together with the monsoonal climate, provide appropriate conditions for the formation of natural wetlands or establishment of artificial wetlands. Wetland species (particularly Typha spp.) flourish in the presence of flowing or shallow water from dewatering, and data collected from natural and experimental wetlands show reduction of metal concentrations by wetland filtration of mine waste water. The following case studies are considered:Constructed wetlands, used to remove uranium from waste rock runoff before release to an adjacent creek provide a means of “polishing” runoff water prior to discharge to the creek.Creek-Billabong systems with existing wetlands adjacent to mine sites adventitiously “filter” waters discharged from mine sites. Trace elements in dewatering water from a gold mine discharged into an oxbow show reduction of elemental concentrations downstream, compared to discharge water.Naturally generated wetlands at several Northern Territory mines have developed along channels for discharge of pit water, with ingress of Typha domingensis. Such wetlands, associated with dewatering, have been examined at four mines, some with acid mine drainage. Water quality measured after wetland treatments shows reductions in concentrations of various heavy metals and sulfate. Volunteer Typha domingensis grows and spreads in shallow flowing channels, providing an inherent “filtration” of the water.Natural swamplands are incorporated in the waste rock runoff management design of a new gold mine, to reduce potentially high arsenic levels in the waste water. Constructed and naturally occurring wetlands may be used in the treatment of most mine waste waters to achieve levels of constituents acceptable for discharge to the surrounding environment.

Removal of heavy metals and cyanide from gold mine wastewater

2010 ◽  
Vol 85 (5) ◽  
pp. 590-613 ◽  
Author(s):  
Mike A. Acheampong ◽  
Roel J.W. Meulepas ◽  
Piet N.L. Lens
Keyword(s):  
Heavy Metals ◽  
Gold Mine ◽  
Removal Of Heavy Metals ◽  
Mine Wastewater

scholarly journals Removal of heavy metals from waste water using different biosorbents

2010 ◽  
Vol 5 (2) ◽  
pp. 299-304 ◽  
Author(s):  
S. Murugavelh ◽  
D. Vinothkumar
Keyword(s):  
Waste Water ◽  
Heavy Metals ◽  
Removal Of Heavy Metals

scholarly journals Adsorbent from waste tires as activated carbon for removal of heavy metals from waste water-A review

2021 ◽  
Vol 1913 (1) ◽  
pp. 012088
Author(s):  
Aruna M Sudame ◽  
Manjusha Ugale ◽  
Ekta R Raut ◽  
Bharat Kapgate
Keyword(s):  
Waste Water ◽  
Heavy Metals ◽  
Activated Carbon ◽  
Waste Tires ◽  
Removal Of Heavy Metals

A review on polypyrrole-coated bio-composites for the removal of heavy metal traces from waste water

2019 ◽  
pp. 152808371987127 ◽  
Author(s):  
Subhankar Maity ◽  
Ashish Dubey ◽  
Supriyo Chakraborty
Keyword(s):  
Waste Water ◽  
Heavy Metals ◽  
Heavy Metal ◽  
Industrial Wastewater ◽  
Waste Water Treatment ◽  
Absorption Properties ◽  
Adsorption Capacities ◽  
Ion Absorption ◽  
Removal Of Heavy Metals ◽  
Day By Day

With the development of industrialization and human activities, discharge of waste water containing heavy metals in the environment is increasing day by day. It causes serious threats to the human civilization and the flora and fauna in this earth. Conducting polymers like polypyrrole and polyaniline can be used for treating wastewater due to their inherent ion absorption properties. This article has been focused on the development of polypyrrole coated bio-composites and their potential about the removal of heavy metals from industrial wastewater. Adsorption process can be successfully employed to remove heavy metals from the wastewater by the treatment of water with polypyrrole-coated composites. It was reported in literature that the polypyrrole and polyaniline-coated adsorbents had good adsorption capacities for Mg, Fe, Cu, Cd, Pb, Zn, and Ni. Polypyrrole-coated saw dust, rice husk, chitin, and cellulosic materials could be able to remove Cr, Fe, Cu, and Zn from wastewater. This method would be a replacement for costly conventional methods of removing heavy metal ions from wastewater. It is expected that this method would be an alternative for waste water treatment which will benefit the industries in future.

scholarly journals A Review on Removal of Heavy Metal Ions from Waste Water using Natural/ Modified Bentonite

2018 ◽  
Vol 144 ◽  
pp. 02021 ◽  
Author(s):  
Prathiksha P. Prabhu ◽  
Balakrishna Prabhu
Keyword(s):  
Waste Water ◽  
Heavy Metals ◽  
Heavy Metal Ions ◽  
Well Being ◽  
Potential Effect ◽  
Inorganic Contaminants ◽  
Inorganic Pollutants ◽  
Environment Friendly ◽  
Modified Bentonite ◽  
Removal Of Heavy Metals

The pollution of water due to various toxic components especially heavy metals are causing an adverse effect on the flora and fauna and also have a potential effect on the human well-being. Due to this there is an immediate requirement to find various techniques for the removal of lethal toxins in wastewater. Amongst all of the existing methods, adsorption is one of the most effective and efficient technique for the elimination of contaminants such as heavy metals from wastewater. The increasing number of research publications on adsorption of heavy metals using modified bentonite leads to the fact that there has been a surging importance in the production of a variety of economical adsorbents for water treatment. Outcome from the latest advances in using bentonites and modified bentonite shows the adaptable nature of the clay and its environment friendly nature. The present review shows the removal of heavy metals using modified bentonite. The main purpose of this review is to describe the flexible way of natural bentonite and modified bentonite and its ability to absorb array of inorganic pollutants, which are present in the waste water. It is apparent from the review that modified bentonite have displayed high removal potential for certain kind of inorganic contaminants from wastewater.

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