scholarly journals A Review on Chitosan for the Removal of Heavy Metals Ions

2019 ◽  
Vol 12 (3) ◽  
pp. 103-128 ◽  
Author(s):  
Qasim Zia ◽  
Madeeha Tabassum ◽  
Hugh Gong ◽  
Jiashen Li
Keyword(s):  
Heavy Metals ◽  
Removal Of Heavy Metals ◽  
Heavy Metals Ions

Sequential removal of heavy metals ions and organic pollutants using an algal-bacterial consortium

Chemosphere ◽  
2006 ◽  
Vol 63 (6) ◽  
pp. 903-911 ◽  
Author(s):  
Raul Muñoz ◽  
Maria Teresa Alvarez ◽  
Adriana Muñoz ◽  
Enrique Terrazas ◽  
Benoit Guieysse ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Organic Pollutants ◽  
Bacterial Consortium ◽  
Removal Of Heavy Metals ◽  
Heavy Metals Ions

scholarly journals Synthesis of Fe3O4@PVBC–TMT nanoparticles for the efficient removal of heavy metals ions

RSC Advances ◽  
2019 ◽  
Vol 9 (69) ◽  
pp. 40546-40552 ◽  
Author(s):  
Zhiming Chen ◽  
Jiaojiao Song ◽  
Qingpeng Zhu ◽  
Zhiguo Li ◽  
Renchun Yang
Keyword(s):  
Heavy Metals ◽  
Core Shell ◽  
Magnetic Adsorbent ◽  
Efficient Removal ◽  
Removal Of Heavy Metals ◽  
Heavy Metals Ions

Core–shell Fe3O4@PVBC–TMT nanoparticles were fabricated and served as a valid magnetic adsorbent for the removal of heavy metals ions.

scholarly journals Microbial Sensing and Removal of Heavy Metals: Bioelectrochemical Detection and Removal of Chromium(VI) and Cadmium(II)

Molecules ◽  
2021 ◽  
Vol 26 (9) ◽  
pp. 2549
Author(s):  
Reham A. Alfadaly ◽  
Ashraf Elsayed ◽  
Rabeay Y. A. Hassan ◽  
Ahmed Noureldeen ◽  
Hadeer Darwish ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Toxic Metal ◽  
Metal Exposure ◽  
Chromium Vi ◽  
Electrochemically Active ◽  
Removal Of Heavy Metals ◽  
Electrochemically Active Biofilm ◽  
Heavy Metals Ions ◽  
Susceptible Organism ◽  
Complementary Strategy

The presence of inorganic pollutants such as Cadmium(II) and Chromium(VI) could destroy our environment and ecosystem. To overcome this problem, much attention was directed to microbial technology, whereas some microorganisms could resist the toxic effects and decrease pollutants concentration while the microbial viability is sustained. Therefore, we built up a complementary strategy to study the biofilm formation of isolated strains under the stress of heavy metals. As target resistive organisms, Rhizobium-MAP7 and Rhodotorula ALT72 were identified. However, Pontoea agglumerans strains were exploited as the susceptible organism to the heavy metal exposure. Among the methods of sensing and analysis, bioelectrochemical measurements showed the most effective tools to study the susceptibility and resistivity to the heavy metals. The tested Rhizobium strain showed higher ability of removal of heavy metals and more resistive to metals ions since its cell viability was not strongly inhibited by the toxic metal ions over various concentrations. On the other hand, electrochemically active biofilm exhibited higher bioelectrochemical signals in presence of heavy metals ions. So by using the two strains, especially Rhizobium-MAP7, the detection and removal of heavy metals Cr(VI) and Cd(II) is highly supported and recommended.

ELECTROLYTIC REMOVAL OF HEAVY METALS IONS FROM MURIATIC SOLUTIONS

2017 ◽  
pp. 60
Author(s):  
N.D. Gomelya ◽  
O.V. Hlushko ◽  
G.G. Trohymenko ◽  
L.I. Butchenko
Keyword(s):  
Heavy Metals ◽  
Hydrochloric Acid ◽  
Current Yield ◽  
Cathode Chamber ◽  
Nickel Ions ◽  
Initial Concentration ◽  
Electrochemical Processing ◽  
Intermediate Chamber ◽  
Removal Of Heavy Metals ◽  
Heavy Metals Ions

The results of research on the electrochemical processing of acidic regeneration solutions containing heavy metals ions are presented. The use of a three-cell electrolyzer makes it possible to efficiently extract zinc, copper and nickel ions from muriatic solutions and to concentrate hydrochloric acid in the cell’s intermediate chamber. The paper studies the dependence of the current yield of heavy metals on the concentration of hydrochloric acid, the initial concentration of heavy metals in the cathode chamber, the duration of electrolysis and the concentration of hydrochloric acid in its concentrating zone. The yield of copper and zinc decreases with increasing of acidity in the initial solutions and in the intermediate chamber of the cell. The current yield of nickel is determined to be little depended on the initial concentration of hydrochloric acid. The results on the concentration of hydrochloric acid, depending on the duration of electrolysis, the initial concentration of acid and heavy metals in the catholyte are presented. Bibl. 9, Fig. 9.

scholarly journals Efficient Removal of Heavy Metals from Aqueous Solutions Using a Bionanocomposite of Eggshell/Ag-Fe

Catalysts ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 727
Author(s):  
Verónica M. Alamillo-López ◽  
Víctor Sánchez-Mendieta ◽  
Oscar F. Olea-Mejía ◽  
María G. González-Pedroza ◽  
Raúl A. Morales-Luckie
Keyword(s):  
Heavy Metals ◽  
Adsorption Capacity ◽  
Natural Material ◽  
Efficient Removal ◽  
Fe Nanoparticles ◽  
Adsorption Data ◽  
Removal Of Heavy Metals ◽  
Heavy Metals Ions ◽  
Efficient Adsorbent ◽  
Adsorbent Materials

Eggshell and an easily synthesized bionanocomposite of eggshell with Ag-Fe nanoparticles demonstrated to be efficient adsorbent materials for the removal of lead, arsenic, and mercury from water. The natural material and the bionanocomposite were characterized by TEM and XRD. Ag-Fe nanoparticles vary from 1 to 100 nm in size. Equilibrium times of the adsorption systems were achieved between 4 and 8 h. The experimental adsorption data fitted the pseudo-second and Elovich models; therefore, the adsorption of heavy metals ions took place mainly by a chemical process. The adsorption capacity of eggshell in mg/g was 7.01 for As5+, 3.90 for Pb2+, and 1.51 for Hg2+, while the nanocomposite adsorption capacity was 17.7 for As5+, 27.8 for Pb2+ and 15.88 for Hg2+.

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