The Uptake of Hazardous Metal Ions into a High-Nuclearity Cluster-Based Compound with Structural Transformation and Proton Conduction

2020 ◽  
Vol 12 (23) ◽  
pp. 26222-26231
Author(s):  
Wen Ma ◽  
Bing Hu ◽  
Ji-Long Li ◽  
Zhi-Zhuan Zhang ◽  
Xi Zeng ◽  
...  
Keyword(s):  
Metal Ions ◽  
Structural Transformation ◽  
Proton Conduction ◽  
Hazardous Metal

Stabilization of Hazardous Materials into Ferrites

1991 ◽  
Vol 23 (1-3) ◽  
pp. 399-404 ◽  
Author(s):  
Y. Tamaura ◽  
P. Q. Tu ◽  
S. Rojarayanont ◽  
H. Abe
Keyword(s):  
Aqueous Solution ◽  
Heavy Metal ◽  
Metal Ions ◽  
Present Method ◽  
Hazardous Materials ◽  
Precipitation Process ◽  
Waste Waters ◽  
Formation Reaction ◽  
Coating Method ◽  
Hazardous Metal

Stabilization of the hazardous materials by the Fe3O4-coating method was studied. In the ferrite-formation reaction in the aqueous solution, the adsorption of the metal ions and the oxidation of the adsorbed Fe(II) ions are repeated on the surface of the ferrite particles. This reaction was adopted to the coating of the hazardous materials with the Fe3O4(or ferrite). By repeating the two steps of l)the addition of the Fe(II) aqueous solution into the suspension of the hazardous materials, and 2)the oxidation by passing air through the reaction suspension, with the Fe3O4 layer, we could coat the surfaces of the hazardous materials, such as the heavy metal sludge from the neutralization-precipitation process, the CaF2 precipitates in the treatment of the waste waters containing fluoride ion along with hazardous metal ions, and the soils containing Cd(II) ion. These Fe3O4-coated hazardous materials are very stable and no heavy metal ions are leached under the normal environmental conditions. The ferrite sludges formed in the “Ferrite Process” were highly stabilized by the present method, and by the heat-treatment.

Cellulose Based Electrospun Nanofilters: Perspectives On Tannery Effluent Waste Water Treatment

2021 ◽  
Author(s):  
Senthil Rethinam ◽  
Sardar Batıkan Kavukcu ◽  
Thiagarajan Hemalatha ◽  
A.Wilson Aruni ◽  
Aylin Sendemir
Keyword(s):  
Metal Ions ◽  
Waste Water Treatment ◽  
Toxic Metal ◽  
Poly Vinyl Alcohol ◽  
Tannery Effluent ◽  
Tea Leaves ◽  
Leather Industry ◽  
Elongation At Break ◽  
Hazardous Metal ◽  
Effluent Waste

Abstract Development of nanofilters with the capability to remove toxic metal ions from effluent wastewater will be of immense help to the leather industry. In this study, fibrous nanofilter (FNF) was prepared using micro cellulosic fiber (MCF) and tea leaves microparticles (TLM) blended in poly (vinyl) alcohol (PVA). FNF was analysed for its efficacy to remove hazardous metals from tannery effluent wastewater. The FNF had promising traits of tensile strength (19.24+0.05 Mpa), elongation at break (22.31+0.12 %), flexibility (10.88+0.05 %), water absorption (37.86+0.14 %) and desorption (32.54+0.33 %). The metal adsorption studies clearly reflected the removal of toxic Cr (VI) ions from the effluent water by FNF. The study establishes an economically feasible and highly efficient way to remove hazardous metal ions from effluent wastewater.

Ultrasensitive SERS Nanoprobes for Hazardous Metal Ions Based on Trimercaptotriazine-Modified Gold Nanoparticles

2008 ◽  
Vol 47 (8) ◽  
pp. 2934-2936 ◽  
Author(s):  
Vitor M. Zamarion ◽  
Ronaldo A. Timm ◽  
Koiti Araki ◽  
Henrique E. Toma
Keyword(s):  
Gold Nanoparticles ◽  
Metal Ions ◽  
Hazardous Metal

Structural Transformation of Guanine Coordination Motifs in Water Induced by Metal Ions and Temperature

Langmuir ◽  
2018 ◽  
Vol 34 (27) ◽  
pp. 8092-8098 ◽  
Author(s):  
Wei Li ◽  
Jing Jin ◽  
Xiaoqing Liu ◽  
Li Wang
Keyword(s):  
Metal Ions ◽  
Structural Transformation

High proton conduction behavior in 12-connected 3D porous lanthanide–organic frameworks and their polymer composites

CrystEngComm ◽  
2018 ◽  
Vol 20 (22) ◽  
pp. 3066-3073 ◽  
Author(s):  
Shuai-Liang Yang ◽  
Pei-Pei Sun ◽  
Yue-Ying Yuan ◽  
Chen-Xi Zhang ◽  
Qing-Lun Wang
Keyword(s):  
Metal Ions ◽  
Polymer Composites ◽  
Composite Membranes ◽  
Proton Conduction ◽  
Carboxylate Ligand ◽  
High Proton ◽  
Conduction Behavior ◽  
Lanthanide Metal

Two novel 12-connected 3D porous lanthanide–organic frameworks have been synthesized by the reaction of bipyridine-carboxylate ligand bpydbH2 and lanthanide metal ions. Both of them show a high proton conduction behavior as well as their composite membranes.

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