Functionalization of polymeric membranes with phosphonic and thiol groups for water purification from heavy metal ions

2019 ◽  
Vol 10 (2) ◽  
pp. 337-346
Author(s):  
Valeriia Sliesarenko ◽  
Veronika Tomina ◽  
Oksana Dudarko ◽  
Maja Bauman ◽  
Aleksandra Lobnik ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Water Purification ◽  
Heavy Metal Ions ◽  
Polymeric Membranes ◽  
Thiol Groups

Smectite organofunctionalized with thiol groups for adsorption of heavy metal ions

2009 ◽  
Vol 42 (3-4) ◽  
pp. 410-414 ◽  
Author(s):  
A DEMELLOFERREIRAGUIMARAES ◽  
V CIMINELLI ◽  
W VASCONCELOS
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Thiol Groups

scholarly journals Effect of LDHs and Other Clays on Polymer Composite in Adsorptive Removal of Contaminants: A Review

Crystals ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 957 ◽  
Author(s):  
Maleshoane Mohapi ◽  
Jeremia Shale Sefadi ◽  
Mokgaotsa Jonas Mochane ◽  
Sifiso Innocent Magagula ◽  
Kgomotso Lebelo
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Water Purification ◽  
Heavy Metal Ions ◽  
Layered Silicate ◽  
Preparation Methods ◽  
Anionic Clays ◽  
2D Nanomaterials ◽  
Double Hydroxides ◽  
And Diffusion

Recently, the development of a unique class of layered silicate nanomaterials has attracted considerable interest for treatment of wastewater. Clean water is an essential commodity for healthier life, agriculture and a safe environment at large. Layered double hydroxides (LDHs) and other clay hybrids are emerging as potential nanostructured adsorbents for water purification. These LDH hybrids are referred to as hydrotalcite-based materials or anionic clays and promising multifunctional two-dimensional (2D) nanomaterials. They are used in many applications including photocatalysis, energy storage, nanocomposites, adsorption, diffusion and water purification. The adsorption and diffusion capacities of various toxic contaminants heavy metal ions and dyes on different unmodified and modified LDH-samples are discussed comparatively with other types of nanoclays acting as adsorbents. This review focuses on the preparation methods, comparison of adsorption and diffusion capacities of LDH-hybrids and other nanoclay materials for the treatment of various contaminants such as heavy metal ions and dyes.

Polyurethane Foam Filled with Chitosan — Sorbent for Elimination of Oil Pollution

2019 ◽  
Vol 23 (5) ◽  
pp. 37-41
Author(s):  
Quyen Thi Quynh Anh ◽  
D.I. Fazilova ◽  
A.A. Nazirova ◽  
L.A. Zenitova ◽  
V.V. Yanov
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Polyurethane Foam ◽  
Water Purification ◽  
Heavy Metal Ions ◽  
Oil Pollution ◽  
Raw Material ◽  
Foam Filled ◽  
Short Time

It is proposed to use a sorbent based on polyurethane foam and natural raw material chitosan for water purification from oil pollution. Traditionally, chitosan and materials with its use are mainly used as purifiers of water and other media from heavy metal ions. This paper provides information on the use of chitosan, which is preliminary isolated from the waste from processing f various beetles, dead bees, etc. Sorbent synthesis occurs by mixing the components of polyurethane foam and chitosan in a very short time, which allows you to produce and use it directly on site.

scholarly journals Magnetic Separation of Phosphate and Heavy Metal Ions Using Ferrimagnetic Particles for Water Purification.*

2002 ◽  
Vol 25 (1) ◽  
pp. 33-38 ◽  
Author(s):  
Nobuyuki GOKON ◽  
Ayano SHIMADA ◽  
Takahito MATSUOKA ◽  
Hiroshi KANEKO ◽  
Yutaka TAMAURA ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Magnetic Separation ◽  
Water Purification ◽  
Heavy Metal Ions

Nanotechnology-Based Nano-Biosorbents

2020 ◽  
pp. 386-408
Author(s):  
Mintu Maan Dutta ◽  
Anushmita Charingia
Keyword(s):  
Heavy Metal ◽  
Wastewater Treatment ◽  
Metal Ions ◽  
Water Purification ◽  
Heavy Metal Ions ◽  
Membrane Separation ◽  
Water Bodies ◽  
Modified Chitosan ◽  
Purification Methods ◽  
Industrial Sources

Most countries worldwide face the problem related to clean and safe water. The major source of contamination of water bodies includes the discharges of wastes from various domestic and industrial sources (heavy metal ions, dyes, and pharmaceuticals). To overcome those problems, various water purification methods such as coagulation, flocculation, adsorption, membrane separation, biological, and electrochemical methods have been engaged. Adsorption using nano-biosorbents based on chitin, chitosan and modified chitosan, cellulose, alginate, micro algal has emerged as a better alternative for the removal of contaminants from drinking and wastewater treatment. The main advantages of these nano-biosorbents include its biodegradability and eco-friendliness, which have attracted researchers to this field.

CREATINE PHOSPHOKINASE ACTIVITY OF MAMMALIAN ERYTHROCYTES

1956 ◽  
Vol 34 (3) ◽  
pp. 481-487 ◽  
Author(s):  
P. F. Solvonuk ◽  
Sheila C. McRae ◽  
H. B. Collier
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Divalent Cation ◽  
Heavy Metal Ions ◽  
Creatine Phosphokinase ◽  
Adenosine Diphosphate ◽  
Creatine Phosphate ◽  
Human Erythrocytes ◽  
Thiol Groups ◽  
Rat Erythrocytes

Creatine phosphokinase activity was demonstrated in hemolyzates of rabbit and rat erythrocytes, but it was not present in significant amounts in human erythrocytes. Activity of the enzyme was followed by photometric estimation of the creatine liberated in the transfer of phosphate from creatine phosphate to adenosine diphosphate. The enzyme was inhibited by mercurials, heavy-metal ions, and iodoacetate, and evidently possesses free thiol groups. It required for its activation a divalent cation, such as Mg++ or Ca++, but neither Na+ nor K+ had any effect.

Sorption Purification of Effluent Water From Heavy Metal Ions by Modified Natural Zeolites

2017 ◽  
Vol 6 (2) ◽  
pp. 56-61 ◽  
Author(s):  
Обуздина ◽  
Marina Obuzdina ◽  
Руш ◽  
E. Rush ◽  
Шалунц ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Water Purification ◽  
Heavy Metal Ions ◽  
Point Of View ◽  
Effluent Water ◽  
Solution Ph ◽  
Economic Point ◽  
Sorption Purification ◽  
Cu Ions

Features of sorption method of effluent water purification are considered. Analysis of technologies of effluent water purification from heavy metalsionsis presented. Physico-chemical regularities of sorption of Zn, Ni, Cu ions are investigated. As sorbents it is proposed to use zeolites of Holinsky deposits, modified by sulfur polymer, obtained from waste of epichlorohydrin production. This will allow simultaneously solving two problems: elimination of waste and wastewater purification, which is significantly advantageous from the economic point of view. Kinetic curves of sorption of Zn, Ni, Cu ions in different solution concentrations are presented. Also the adsorption process of heavy metal ions from solutions of chemically modified zeolites in the evaluation of the influence of various factors (the contact time of sorbent with solution, pH and temperature) are investigated.

CREATINE PHOSPHOKINASE ACTIVITY OF MAMMALIAN ERYTHROCYTES

1956 ◽  
Vol 34 (1) ◽  
pp. 481-487 ◽  
Author(s):  
P. F. Solvonuk ◽  
Sheila C. McRae ◽  
H. B. Collier
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Divalent Cation ◽  
Heavy Metal Ions ◽  
Creatine Phosphokinase ◽  
Adenosine Diphosphate ◽  
Creatine Phosphate ◽  
Human Erythrocytes ◽  
Thiol Groups ◽  
Rat Erythrocytes

Creatine phosphokinase activity was demonstrated in hemolyzates of rabbit and rat erythrocytes, but it was not present in significant amounts in human erythrocytes. Activity of the enzyme was followed by photometric estimation of the creatine liberated in the transfer of phosphate from creatine phosphate to adenosine diphosphate. The enzyme was inhibited by mercurials, heavy-metal ions, and iodoacetate, and evidently possesses free thiol groups. It required for its activation a divalent cation, such as Mg++ or Ca++, but neither Na+ nor K+ had any effect.

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