scholarly journals Development and evaluation of Mn oxide-coated composite adsorbent for the removal and recovery of heavy metals from coal processing wastewater. Final report, December 1995

1995 ◽  
Author(s):  
Huan Jung Fan ◽  
P.R. Anderson
Keyword(s):  
Heavy Metals ◽  
Final Report ◽  
Coal Processing ◽  
Composite Adsorbent ◽  
Mn Oxide ◽  
Removal And Recovery

Metals Removal and Recovery by Arthrobacter sp. Biomass

1992 ◽  
Vol 26 (9-11) ◽  
pp. 2149-2152 ◽  
Author(s):  
A. Grappelli ◽  
L. Campanella ◽  
E. Cardarelli ◽  
F. Mazzei ◽  
M. Cordatore ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Industrial Wastes ◽  
Gram Negative Bacteria ◽  
Gram Negative ◽  
Real Possibility ◽  
Metals Removal ◽  
Metal Capture ◽  
Accumulation Of Metals ◽  
Removal And Recovery

Experiments on the real possibility of employing microorganisms to capture inorganic polluting substances, mainly heavy metals from urban and industrial wastes, are running using bacteria biomass. Many strains of Arthrobacter spp., gram-negative bacteria, diffused in the soil also inacondition of environmental stresses, have been proved to be particulary effective in heavy metal capture (Cd, Cr, Pb, Cu, Zn). The active and passive processes in accumulation of metals by bacteria were studied. Our experiments have been done on fluid biomass and on a membrane both for practical use and for an easy recovery.

Removal and recovery of heavy metals from electroplating wastewater by using Kyanite as an adsorbent

2001 ◽  
Vol 87 (1-3) ◽  
pp. 127-137 ◽  
Author(s):  
Mohammad Ajmal ◽  
Rifaqat A.K Rao ◽  
Rais Ahmad ◽  
Jameel Ahmad ◽  
Liaqat A.K Rao
Keyword(s):  
Heavy Metals ◽  
Electroplating Wastewater ◽  
Removal And Recovery

scholarly journals Immobilization Potential of Cow Manure for Heavy Metal Remediation from Refuse Dump Soil

2021 ◽  
pp. 44-55
Author(s):  
Ezeudu Emeka Christian ◽  
Oli Christian Chukwuemeka ◽  
. Enenche ◽  
Elaigwu Daniel ◽  
Anekwe Ozioma Juliana ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Ricinus Communis ◽  
Cow Manure ◽  
Industrial Chemistry ◽  
Refuse Dump ◽  
Anambra State ◽  
Mn Oxide ◽  
Greenhouse Study ◽  
Mobility Factor ◽  
Heavy Metal Remediation

Aims: The present study investigated the effect of cow manure amendment on fractionation and availability of some heavy metals (Cd, Cu, Cr, Mn, Pb and Zn) in refuse dump soil. Study Design: A greenhouse study experiment was conducted to determine the uptake of the metals by Ricinus communis in dump soil treated with 0%, 5%, 10% and 20% cow manure. Place and Duration of Study: The study was carried out at the Department of Pure and Industrial Chemistry, Nnamdi Azikiwe University Awka, Anambra State, Nigeria, between May and October 2018. Methodology: Experimental pots were filled with 2.0kg refuse dump soil in a green house and treated with 5%, 10% and 20% of Cow manure in three replicates per treatment. The seeds of Ricinus communis were planted in each pot and analysed after 12 weeks of planting for heavy metals using AAS. Sequential extraction was carried out on the treated soil after the harvest with each extract further analysed for heavy metals using AAS. Results: Application of cow manure significantly (p ˂ 0.05) affected the redistribution and the mobility of the heavy metals in the dump soil; as the concentration of the amendment increased, heavy metals in the mobile fractions reduced. 20% amendment had the best immobilization effect as the mobility factor decreased with increasing manure amendment. The mobility factors at 20% amendment were 18.34%, 15.82%, 5.23%, 15.86%, 25.56% and 12.81% for Cd, Cr, Cu, Mn, Pb and Zn respectively with the general trend of metal forms given as: residual > bound to organic > bound to Fe-Mn oxide > bound to carbonate > exchangeable. Conclusion: Cow manure amendment of the dump soil decreased the availability of heavy metals for plant uptake; and the metal uptake generally decreased as percentage amendment increased. Cow manure is therefore a good immobilizing agent for remediation of Cd, Cr, Cu, Mn, Pb and Zn in polluted soils.

Adsorption and redox reactions of heavy metals on synthesized Mn oxide minerals

2007 ◽  
Vol 147 (2) ◽  
pp. 366-373 ◽  
Author(s):  
Xiong Han Feng ◽  
Li Mei Zhai ◽  
Wen Feng Tan ◽  
Fan Liu ◽  
Ji Zheng He
Keyword(s):  
Heavy Metals ◽  
Redox Reactions ◽  
Mn Oxide ◽  
Oxide Minerals

Speciation Analysis of Heavy Metals of Core Amuta Sediments in Lianhua Lake

2010 ◽  
Vol 113-116 ◽  
pp. 716-719
Author(s):  
Fu Hua Xuan ◽  
Shu Ying Zang
Keyword(s):  
Heavy Metals ◽  
Speciation Analysis ◽  
Chemical Forms ◽  
Organic Sulfide ◽  
The Core ◽  
Mn Oxide ◽  
Binding Forms ◽  
Residue Fraction

The BCR-SEP method was used to determine the binding forms of heavy metals in Amuta Lake(AMT) in this paper. The chemical forms of heavy metals, namely extractable fractions or valid fractions, including exchangeable-carbonate fraction, Fe-Mn oxide fraction and Organic-sulfide fraction .The results of the partitioning study indicated that in the core AMT sediments, Cr, Fe and Ni are mainly associated with the residue fraction, Cu is mainly concentrated in the Fe–Mn oxide fractions and residue fraction, Mn is concentrated in the exchangeable-carbonate fraction and residue fraction. Zn is concentrated in organic-sulfide fraction and residue fraction.

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