Effects of histidine modification of chitosan microparticles on metal ion adsorption

2020 ◽  
Vol 154 ◽  
pp. 104694
Author(s):  
Marcella T. Maia ◽  
Débora N. Sena ◽  
Guilherme B. Calais ◽  
Francisco Murilo T. Luna ◽  
Marisa M. Beppu ◽  
...  
Keyword(s):  
Metal Ion ◽  
Ion Adsorption ◽  
Histidine Modification ◽  
Chitosan Microparticles ◽  
Metal Ion Adsorption

scholarly journals Preparation, characterization and application of CS@PDA@Fe3O4 nanocomposite as a new magnetic nano-adsorber for the removal of metals and dyes in wastewater

RSC Advances ◽  
2021 ◽  
Vol 11 (38) ◽  
pp. 23679-23685
Author(s):  
Xingjing Zhang ◽  
Baohe Li ◽  
Xiaoqian Han ◽  
Nong Wang
Keyword(s):  
Heavy Metal ◽  
Metal Ion ◽  
Heavy Metal Ion ◽  
Ion Adsorption ◽  
Metal Ion Adsorption

Synthesis of CS@PDA@Fe3O4 nanocomposite and heavy metal ion adsorption.

Impact of the degree of functionalization of graphene oxide on the electrochemical charge storage property and metal ion adsorption

RSC Advances ◽  
2014 ◽  
Vol 4 (107) ◽  
pp. 62737-62745 ◽  
Author(s):  
Mahesh M. Kadam ◽  
Omkar R. Lokare ◽  
Kota V. M. K. Kireeti ◽  
Vilas G. Gaikar ◽  
Neetu Jha
Keyword(s):  
Graphene Oxide ◽  
Metal Ion ◽  
Charge Storage ◽  
Ion Adsorption ◽  
Oxidizing Agent ◽  
Metal Ion Adsorption ◽  
Storage Property

The increase in oxygen functionalities on GO with increasing use of oxidizing agent results in (i) amplification of redox pseudocapacitive current and (ii) improves metal ion adsorption.

scholarly journals Cadmium Ion Biosorption by the Thermophilic Bacteria Geobacillus stearothermophilus and G. thermocatenulatus

2006 ◽  
Vol 72 (6) ◽  
pp. 4020-4027 ◽  
Author(s):  
Adrian Hetzer ◽  
Christopher J. Daughney ◽  
Hugh W. Morgan
Keyword(s):  
Metal Ion ◽  
Functional Group ◽  
Thermophilic Bacteria ◽  
Toxicity Tests ◽  
Ion Adsorption ◽  
Geobacillus Stearothermophilus ◽  
Cadmium Ion ◽  
Thermophilic Microorganisms ◽  
Gram Positive Bacteria ◽  
Metal Ion Adsorption

ABSTRACT This study reports surface complexation models (SCMs) for quantifying metal ion adsorption by thermophilic microorganisms. In initial cadmium ion toxicity tests, members of the genus Geobacillus displayed the highest tolerance to CdCl2 (as high as 400 to 3,200 μM). The thermophilic, gram-positive bacteria Geobacillus stearothermophilus and G. thermocatenulatus were selected for further electrophoretic mobility, potentiometric titration, and Cd2+ adsorption experiments to characterize Cd2+ complexation by functional groups within and on the cell wall. Distinct one-site SCMs described the extent of cadmium ion adsorption by both studied Geobacillus sp. strains over a range of pH values and metal/bacteria concentration ratios. The results indicate that a functional group with a deprotonation constant pK value of approximately 3.8 accounts for 66% and 80% of all titratable sites for G. thermocatenulatus and G. stearothermophilus, respectively, and is dominant in Cd2+ adsorption reactions. The results suggest a different type of functional group may be involved in cadmium biosorption for both thermophilic strains investigated here, compared to previous reports for mesophilic bacteria.

Functional group effect of isoreticular metal–organic frameworks on heavy metal ion adsorption

2018 ◽  
Vol 42 (11) ◽  
pp. 8864-8873 ◽  
Author(s):  
Leili Esrafili ◽  
Vahid Safarifard ◽  
Elham Tahmasebi ◽  
M. D. Esrafili ◽  
Ali Morsali
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Metal Ion ◽  
Heavy Metal Ions ◽  
Functional Group ◽  
Metal Organic Frameworks ◽  
Ion Adsorption ◽  
Group Effect ◽  
Metal Ion Adsorption ◽  
Metal Organic

We examined adsorption behavior of some MOFs having different functional groups in their pillar structures for adsorption of some heavy metal ions.

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