scholarly journals Removal of heavy metals from tannery effluent using chitosan-g-poly(butyl acrylate)/bentonite nanocomposite as an adsorbent

2016 ◽  
Vol 2 (1) ◽  
Author(s):  
R. Nithya ◽  
P. N. Sudha
Keyword(s):  
Heavy Metals ◽  
Butyl Acrylate ◽  
Tannery Effluent ◽  
Removal Of Heavy Metals

scholarly journals Bioremediation of Toxic Heavy Metals Cr (VI) from Tannery Effluent using Micro-Organisms: Biotechnological Potential

2018 ◽  
Vol 4 (01) ◽  
pp. 41-48
Author(s):  
Madhu Prakash Srivastava ◽  
Nupur Srivastava ◽  
Neeta Sharma ◽  
Yogesh Kumar Sharma
Keyword(s):  
Heavy Metals ◽  
Industrial Wastewater ◽  
Agricultural Land ◽  
Extracellular Proteins ◽  
Tannery Effluent ◽  
Toxic Heavy Metals ◽  
Biotechnological Potential ◽  
Removal Of Heavy Metals ◽  
Heavy Metals Pollution ◽  
Micro Organisms

Increased industrialization and human activities have impacted on the environment through disposal waste containing heavy metals. Heavy metals pollution of agricultural soil has been mainly due to the disposal of industrial wastewater, sewage and sewage sludge to agricultural land. Conventional methods for the removal of heavy metals from aqueous solutions are not economically and environmental friendly because it has produced massive quantity of toxic chemical compounds. Naturally fungi have a large variety of extracellular proteins, organic acids and other metabolites. Fungi can adapt in any ecosystems and any environmental conditions Interest in processes involving heavy metal uptake by microorganisms has increased considerably in recent years due to the biotechnological potential of micro-organisms in removing and/or recovery of metals.

Biosorption: An Eco-Friendly Technique for the Removal of Heavy Metals

2011 ◽  
Vol 2 (3) ◽  
pp. 1-8 ◽  
Author(s):  
Sasmita Sabat ◽  
◽  
R V Kavitha R V Kavitha ◽  
Shantha S L Shantha S L ◽  
Gopika Nair ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Removal Of Heavy Metals

Study of the Cu(II) removal from aqueous solutions by adsorption on titania

2013 ◽  
Vol 12 (3) ◽  
pp. 239-247
Keyword(s):  
Heavy Metals ◽  
Ionic Strength ◽  
Toxic Metals ◽  
Low Cost ◽  
Lateral Interaction ◽  
Tio2 Surface ◽  
High Toxicity ◽  
Removal Of Heavy Metals ◽  
Solution Parameters ◽  
Kinetics Of

The removal of heavy metals from wastewaters is a matter of paramount importance due to the fact that their high toxicity causes major environmental pollution problems. One of the most efficient, applicable and low cost methods for the removal of toxic metals from aqueous solutions is that of their adsorption on an inorganic adsorbent. In order to achieve high efficiency, it is important to understand the influence of the solution parameters on the extent of the adsorption, as well as the kinetics of the adsorption. In the present work, the adsorption of Cu(II) species onto TiO2 surface was studied. It was found that the adsorption is a rapid process and it is not affected by the value of ionic strength. In addition, it was found that by increasing the pH, the adsorbed amount of Cu2+ ions and the value of the adsorption constant increase, whereas the value of the lateral interaction energy decreases.

Synergistic Effect of Rhamnolipid and Saponin Biosurfactants on Removal of Heavy Metals from Oil Contaminated Soils

2020 ◽  
Vol 57 (2) ◽  
pp. 109-114
Author(s):  
Amirhossein Dolatzadeh khiyavi ◽  
Reza Hajimohammadi ◽  
Hossein Amani ◽  
Hadi Soltani
Keyword(s):  
Heavy Metals ◽  
Synergistic Effect ◽  
Contaminated Soils ◽  
Removal Of Heavy Metals

Applications of Bentonite to Soil Decontamination

2018 ◽  
Vol 69 (7) ◽  
pp. 1695-1698
Author(s):  
Marin Rusanescu ◽  
Carmen Otilia Rusanescu ◽  
Gheorghe Voicu ◽  
Mihaela Begea
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Laboratory Experiments ◽  
Experimental Studies ◽  
Heavy Metal Concentration ◽  
Polluted Soil ◽  
Raw Material ◽  
Soil Decontamination ◽  
Metal Retention ◽  
Removal Of Heavy Metals

A calcium bentonite from Orasu Nou deposit (Satu Mare Romania) was used as raw material. We have conducted laboratory experiments to determine the influence of bentonite on the degree of heavy metal retention. It has been observed that the rate of retention increases as the heavy metal concentration decreases. Experimental studies have been carried out on metal retention ( Zn) in bentonite. In this paper, we realized laboratory experiments for determining the influence of metal (Zn) on the growth and development of two types of plants (Pelargonium domesticum and Kalanchoe) and the effect of bentonite on the absorption of pollutants. These flowers were planted in unpolluted soil, in heavy metal polluted soil and in heavy metal polluted soil to which bentonite was added to observe the positive effect of bentonite. It has been noticed that the flowers planted in unpolluted soil and polluted with heavy metals to which bentonite has been added, the flowers have flourished, the leaves are still green and the plants whose soils have been polluted with heavy metals began to dry after 6 days, three weeks have yellowish leaves and flowers have dried. Experiments have demonstrated the essential role of bentonite for the removal of heavy metals polluted soil.

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