EFFICIENCY OF NATURAL SORBENTS IN ADSORPTION OF HEAVY METAL IONS

2021 ◽  
Vol 4 (1) ◽  
pp. 14-23
Author(s):  
R.A Apakashev ◽  
◽  
N.G Valiev ◽  
A.I. Usmanov ◽  
M.S. Labzin ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Aqueous Solutions ◽  
Metal Ions ◽  
Key Words ◽  
Heavy Metal Ions ◽  
Natural Sorbents ◽  
Heavy Metals Adsorption ◽  
Metals Adsorption

The article provides research on testing natural sorbents based on peat, diatomite and vermiculite during the adsorption of heavy metal ions (Pb, As, Cr, Cr6+, Cr3+, Cu). The following series of sorbents has been formed according to the efficiency of adsorption of heavy metal ions from aqueous solutions of salts: peat - granular diatomite> coarse vermicu-lite> medium fraction vermiculite> peat - non-granular diatomite> diatomite. Key words: natural sorbents, ameliorants, disturbed lands, heavy metals, adsorption, recultivation, bioremediation.

scholarly journals Effect of pH on Total Volume Membrane Charge Density in the Nanofiltration of Aqueous Solutions of Nitrate Salts of Heavy Metals

Membranes ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 235
Author(s):  
Agata Marecka-Migacz ◽  
Piotr Tomasz Mitkowski ◽  
Arkadiusz Nędzarek ◽  
Jacek Różański ◽  
Waldemar Szaferski
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Mathematical Modelling ◽  
Aqueous Solutions ◽  
Metal Ions ◽  
Charge Density ◽  
Heavy Metal Ions ◽  
Charge Densities ◽  
Ph Values ◽  
Membrane Charge

The separation efficiencies of aqueous solutions containing nitric salts of Zn, Cu, Fe or Pb at various pH in process of nanofiltration have been investigated experimentally. These results were used to obtain the total volume membrane charge densities, through mathematical modelling based on the Donnan–Steric partitioning Model. The experimentally obtained retention values of individual heavy metal ions varied between 36% (Zn2+ at pH = 2), 57% (Pb2+ at pH = 2), 80% (Fe3+ at pH = 9), and up to 97% (Cu2+ at pH = 9). The mathematical modelling allowed for fitting the total volume membrane charge density (Xd), which yielded values ranging from −451.90 to +900.16 mol/m3 for different non-symmetric ions. This study presents the application of nanofiltration (NF) modelling, including a consideration of each ion present in the NF system—even those originating from solutions used to adjust the pH values of the feed.

scholarly journals Porous BMTTPA–CS–GO nanocomposite for the efficient removal of heavy metal ions from aqueous solutions

RSC Advances ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 3725-3731
Author(s):  
Juan Huang ◽  
Weirong Cui ◽  
Ruping Liang ◽  
Li Zhang ◽  
Jianding Qiu
Keyword(s):  
Heavy Metal ◽  
Aqueous Solutions ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Polluted Water ◽  
Efficient Removal

Novel porous BMTTPA–CS–GO nanocomposites are prepared by covalently grafting BMTTPA–CS onto GO surfaces, and used for efficient removal of heavy metal ions from polluted water.

scholarly journals Rapid removal of heavy metal ions from aqueous solutions by low cost adsorbents

2012 ◽  
Vol 12 (2/3/4) ◽  
pp. 318 ◽  
Author(s):  
Ali Ahmadpour ◽  
Tahereh Rohani Bastami ◽  
Masumeh Tahmasbi ◽  
Mohammad Zabihi
Keyword(s):  
Heavy Metal ◽  
Aqueous Solutions ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Low Cost ◽  
Rapid Removal

Adsorption of heavy metal ions from aqueous solutions by bio-char, a by-product of pyrolysis

2013 ◽  
Vol 283 ◽  
pp. 856-862 ◽  
Author(s):  
Murat Kılıç ◽  
Çisem Kırbıyık ◽  
Özge Çepelioğullar ◽  
Ayşe E. Pütün
Keyword(s):  
Heavy Metal ◽  
Aqueous Solutions ◽  
Metal Ions ◽  
Heavy Metal Ions

Simultaneous adsorption of heavy metal ions and anions from aqueous solutions on chitosan—Investigated by spectrophotometry and SEM-EDX analysis

2016 ◽  
Vol 510 ◽  
pp. 275-282 ◽  
Author(s):  
Mandy Mende ◽  
Dana Schwarz ◽  
Christine Steinbach ◽  
Regine Boldt ◽  
Simona Schwarz
Keyword(s):  
Heavy Metal ◽  
Aqueous Solutions ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Edx Analysis ◽  
Simultaneous Adsorption

Evaluation of pectin binding of heavy metal ions in aqueous solutions

Chemosphere ◽  
1999 ◽  
Vol 38 (11) ◽  
pp. 2591-2596 ◽  
Author(s):  
Mykola T. Kartel ◽  
Lidiya A. Kupchik ◽  
Batyr K. Veisov
Keyword(s):  
Heavy Metal ◽  
Aqueous Solutions ◽  
Metal Ions ◽  
Heavy Metal Ions

Biosorption of Heavy Metal Ions (Cu2+, Mn2+, Zn2+, and Fe3+) from Aqueous Solutions Using Activated Sludge: Comparison of Aerobic Activated Sludge with Anaerobic Activated Sludge

2012 ◽  
Vol 168 (8) ◽  
pp. 2079-2093 ◽  
Author(s):  
Yunhai Wu ◽  
Jianxin Zhou ◽  
Yajun Wen ◽  
Li Jiang ◽  
Yunying Wu
Keyword(s):  
Heavy Metal ◽  
Aqueous Solutions ◽  
Activated Sludge ◽  
Metal Ions ◽  
Heavy Metal Ions

Removal of Heavy Metal Ions From Aqueous Solutions UsingBacillus subtilisBiomass Pre-Treated by Supercritical Carbon Dioxide

2017 ◽  
Vol 45 (10) ◽  
pp. 1700356 ◽  
Author(s):  
Adel Al-Gheethi ◽  
Radin Mohamed ◽  
Efaq Noman ◽  
Norli Ismail ◽  
Omar Ab. Kadir
Keyword(s):  
Carbon Dioxide ◽  
Heavy Metal ◽  
Supercritical Carbon Dioxide ◽  
Aqueous Solutions ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Supercritical Carbon
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