Heavy metal

1 - 7 of 7 results

Inﬂuence of operating variables on the removal of heavy metal ions from aqueous solutions by nanoﬁltration The focus of this paper is to test the ability of a commercially available nanoﬁltration membrane (AFC 80) to remove polluting and toxic Pb(II) ions from aqueous solutions in order to meet the USEPA guidelines regarding the toxicity threshold limits. The investigation has been conducted for aqueous Desalination 343 (2014)
Removal of zinc and nickel ions by complexation membrane ﬁltration process from industrial wastewater Many industrial wastewater streams contain toxic metal cations, for example, Ni2+, Zn2+, etc. or their oxyanions in up to few hundred mg/dm3, which must be removed before water recycling or discharging directly into surface waters. The conventional processes to treat this kind of wastewater are, e.g Desalination 240 (2009)
Potential of carbon nanomaterials for removal of heavy metals from water Heavy metals, such as, cadmium, lead, nickel and zinc can be removed from water using sorbents. The rate and extent of removal may be enhanced by choice of appropriate sorbents. In this study heavy metal sorption was studied on indigenously synthesized carbon nanomaterials (CNMs). Two CNMs differing Desalination 232 (2008)
Removal of copper (II) and lead (II) ions from aqueous solutions by adsorption on activated carbon from a new precursor hazelnut husks Activated carbon was prepared from hazelnut husks with zinc chloride activation at 973 K in nitrogen atmosphere. BET surface area of the activated carbon was found 1092 m2g!1. The removal of Cu (II) and Pb (II) ions from aqueous solutions was studied by batch method. The effects of initial pH, conta Desalination 228 (2008)
Biosorption of heavy metal ions from aqueous solutions by activated sludge Biosorption experiments were performed using different pretreated activated sludge as bioadsorbent for Cu2+, Cd and Ni2+. Pretreatment with NaOH was found to improve the adsorption capacity of the sludge where as treatment with HCl reduces it. The treated and untreated sludge show great affinity tow Desalination 196 (2006)
Adsorption of heavy metal ions on composite materials prepared by modification of natural silica Recently because of increasing of environmental consciousness and demands, several discussions about the preservation of natural resources have led to more efforts concerning materials of good selectivity and high sorption capacity [1]. We have developed new composite materials with improved adsorpt Desalination 167 (2004)
(ULPROM) for separating heavy metal: effects of interference parameters An experimental investigation was conducted to study the performance of an aromatic polyamide (ES 20) ultra-lowpressure reverse osmosis membrane (ULPROM) for separating divalent (Cu2+, Ni2+) and hexavalent (Cr6+) heavy metals from bulk solution. The influence of operating pressure, feed concentratio Desalination 144 (2002)

Inﬂuence of operating variables on the removal of heavy metal ions from aqueous solutions by nanoﬁltration

The focus of this paper is to test the ability of a commercially available nanoﬁltration membrane (AFC 80) to remove polluting and toxic Pb(II) ions from aqueous solutions in order to meet the USEPA guidelines regarding the toxicity threshold limits. The investigation has been conducted for aqueous

Desalination 343 (2014)

Removal of zinc and nickel ions by complexation membrane ﬁltration process from industrial wastewater

Many industrial wastewater streams contain toxic metal cations, for example, Ni2+, Zn2+, etc. or their oxyanions in up to few hundred mg/dm3, which must be removed before water recycling or discharging directly into surface waters. The conventional processes to treat this kind of wastewater are, e.g

Desalination 240 (2009)

Potential of carbon nanomaterials for removal of heavy metals from water

Heavy metals, such as, cadmium, lead, nickel and zinc can be removed from water using sorbents. The rate and extent of removal may be enhanced by choice of appropriate sorbents. In this study heavy metal sorption was studied on indigenously synthesized carbon nanomaterials (CNMs). Two CNMs differing

Desalination 232 (2008)

Removal of copper (II) and lead (II) ions from aqueous solutions by adsorption on activated carbon from a new precursor hazelnut husks

Activated carbon was prepared from hazelnut husks with zinc chloride activation at 973 K in nitrogen atmosphere. BET surface area of the activated carbon was found 1092 m2g!1. The removal of Cu (II) and Pb (II) ions from aqueous solutions was studied by batch method. The effects of initial pH, conta

Desalination 228 (2008)

Biosorption of heavy metal ions from aqueous solutions by activated sludge

Biosorption experiments were performed using different pretreated activated sludge as bioadsorbent for Cu2+, Cd and Ni2+. Pretreatment with NaOH was found to improve the adsorption capacity of the sludge where as treatment with HCl reduces it. The treated and untreated sludge show great affinity tow

Desalination 196 (2006)

Adsorption of heavy metal ions on composite materials prepared by modification of natural silica

Recently because of increasing of environmental consciousness and demands, several discussions about the preservation of natural resources have led to more efforts concerning materials of good selectivity and high sorption capacity [1]. We have developed new composite materials with improved adsorpt

Desalination 167 (2004)

(ULPROM) for separating heavy metal: effects of interference parameters

An experimental investigation was conducted to study the performance of an aromatic polyamide (ES 20) ultra-lowpressure reverse osmosis membrane (ULPROM) for separating divalent (Cu2+, Ni2+) and hexavalent (Cr6+) heavy metals from bulk solution. The influence of operating pressure, feed concentratio

Desalination 144 (2002)

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