Uptake of heavy metal ions from aqueous media by hydrogels and their conversion to nanoparticles for generation of a catalyst system: two-fold application study

Poly(methacrylic acid) (P(MAA)), poly(acrylamide) (P(AAm)) and poly(3-acrylamidopropyltrimethyl ammonium chloride) (P(APTMACl)) were synthesized as anionic, neutral and cationic hydrogels respectively.

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Heavy metal ions removal through poly(acrylamide-co-methacrylic acid) resin

Polymer Bulletin ◽

10.1007/s00289-009-0133-0 ◽

2009 ◽

Vol 64 (1) ◽

pp. 41-52 ◽

Cited By ~ 6

Author(s):

Bernabé L. Rivas ◽

S. Amalia Pooley ◽

Carla Muñoz ◽

Lorena Leiton

Keyword(s):

Heavy Metal ◽

Metal Ions ◽

Methacrylic Acid ◽

Heavy Metal Ions ◽

Acid Resin ◽

Heavy Metal Ions Removal ◽

Poly Acrylamide ◽

Metal Ions Removal

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A systematic study for removal of heavy metals from aqueous media using Sorghum bicolor: an efficient biosorbent

Water Science & Technology ◽

10.2166/wst.2018.190 ◽

2018 ◽

Vol 77 (10) ◽

pp. 2355-2368 ◽

Cited By ~ 5

Author(s):

Khalida Naseem ◽

Zahoor H. Farooqi ◽

Muhammad Z. Ur Rehman ◽

Muhammad A. Ur Rehman ◽

Robina Begum ◽

...

Keyword(s):

Heavy Metals ◽

Heavy Metal ◽

Metal Ions ◽

Heavy Metal Ions ◽

Aqueous Media ◽

Review Article ◽

Isotherm Models ◽

Adsorption Efficiency ◽

Adsorption Isotherm Models ◽

Removal Of Heavy Metals

Abstract This review is based on the adsorption characteristics of sorghum (Sorghum bicolor) for removal of heavy metals from aqueous media. Different parameters like pH, temperature of the medium, sorghum concentration, sorghum particle size, contact time, stirring speed and heavy metal concentration control the adsorption efficiency of sorghum biomass for heavy metal ions. Sorghum biomass showed maximum efficiency for removal of heavy metal ions in the pH range of 5 to 6. It is an agricultural waste and is regarded as the cheapest biosorbent, having high adsorption capacity for heavy metals as compared to other reported adsorbents, for the treatment of heavy metal polluted wastewater. Adsorption of heavy metal ions onto sorghum biomass follows pseudo second order kinetics. Best fitted adsorption isotherm models for removal of heavy metal ions on sorghum biomass are Langmuir and Freundlich adsorption isotherm models. Thermodynamic aspects of heavy metal ions adsorption onto sorghum biomass have also been elaborated in this review article. How adsorption efficiency of sorghum biomass can be improved by different physical and chemical treatments in future has also been elaborated. This review article will be highly useful for researchers working in the field of water treatment via biosorption processing. The quantitative demonstrated efficiency of sorghum biomass for various heavy metal ions has also been highlighted in different sections of this review article.

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Effect of Ionic Strength, Crosslinking Degree and Copolymerization on Properties of Poly(Acrylamide) Hydrogel, Application as Adsorbent of Heavy Metal Ions

Journal of Water Chemistry and Technology ◽

10.3103/s1063455x21030036 ◽

2021 ◽

Vol 43 (3) ◽

pp. 228-235

Author(s):

Nour-Elhouda Angar ◽

Djamel Aliouche

Keyword(s):

Heavy Metal ◽

Ionic Strength ◽

Metal Ions ◽

Heavy Metal Ions ◽

Crosslinking Degree ◽

Poly Acrylamide

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Fluorescent Sensors for the Detection of Heavy Metal Ions in Aqueous Media

Sensors ◽

10.3390/s19030599 ◽

2019 ◽

Vol 19 (3) ◽

pp. 599 ◽

Cited By ~ 45

Author(s):

Nerea De Acha ◽

César Elosúa ◽

Jesús Corres ◽

Francisco Arregui

Keyword(s):

Heavy Metal ◽

Metal Ions ◽

Heavy Metal Ions ◽

Organic Dyes ◽

Aqueous Media ◽

High Specificity ◽

Fluorescent Sensors ◽

Special Focus ◽

Quality Of Water

Due to the risks that water contamination implies for human health and environmental protection, monitoring the quality of water is a major concern of the present era. Therefore, in recent years several efforts have been dedicated to the development of fast, sensitive, and selective sensors for the detection of heavy metal ions. In particular, fluorescent sensors have gained in popularity due to their interesting features, such as high specificity, sensitivity, and reversibility. Thus, this review is devoted to the recent advances in fluorescent sensors for the monitoring of these contaminants, and special focus is placed on those devices based on fluorescent aptasensors, quantum dots, and organic dyes.

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Magneto-Fluorescent Hybrid Sensor CaCO3-Fe3O4-AgInS2/ZnS for the Detection of Heavy Metal Ions in Aqueous Media

Materials ◽

10.3390/ma13194373 ◽

2020 ◽

Vol 13 (19) ◽

pp. 4373

Author(s):

Danil Kurshanov ◽

Pavel Khavlyuk ◽

Mihail Baranov ◽

Aliaksei Dubavik ◽

Andrei Rybin ◽

...

Keyword(s):

Heavy Metal ◽

Metal Ions ◽

Heavy Metal Ions ◽

Aqueous Media ◽

Semiconductor Quantum Dots ◽

Fluorescent Properties ◽

Fluorescence Sensors ◽

The Past ◽

Porous Calcium Carbonate ◽

Toxic Ions

Heavy metal ions are not subject to biodegradation and could cause the environmental pollution of natural resources and water. Many of the heavy metals are highly toxic and dangerous to human health, even at a minimum amount. This work considered an optical method for detecting heavy metal ions using colloidal luminescent semiconductor quantum dots (QDs). Over the past decade, QDs have been used in the development of sensitive fluorescence sensors for ions of heavy metal. In this work, we combined the fluorescent properties of AgInS2/ZnS ternary QDs and the magnetism of superparamagnetic Fe3O4 nanoparticles embedded in a matrix of porous calcium carbonate microspheres for the detection of toxic ions of heavy metal: Co2+, Ni2+, and Pb2+. We demonstrate a relationship between the level of quenching of the photoluminescence of sensors under exposure to the heavy metal ions and the concentration of these ions, allowing their detection in aqueous solutions at concentrations of Co2+, Ni2+, and Pb2+ as low as ≈0.01 ppm, ≈0.1 ppm, and ≈0.01 ppm, respectively. It also has importance for application of the ability to concentrate and extract the sensor with analytes from the solution using a magnetic field.

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