scholarly journals Simultaneous adsorption of Cd2+ and reactive dye on mesoporous nanocarbons

RSC Advances ◽  
2015 ◽  
Vol 5 (115) ◽  
pp. 95247-95255 ◽  
Author(s):  
Beatriz Acevedo ◽  
Carmen Barriocanal
Keyword(s):  
Heavy Metal ◽  
Reactive Dye ◽  
Synergic Effect ◽  
Simultaneous Adsorption ◽  
Individual Adsorption

The presence of the dye facilitated the elimination of the heavy metal. Moreover a synergic effect was observed: simultaneous adsorption enhanced each individual adsorption.

Tailored Janus silica nanosheets integrating bispecific artificial receptors for simultaneous adsorption of 2,6-dichlorophenol and Pb(ii)

2019 ◽  
Vol 7 (27) ◽  
pp. 16161-16175 ◽  
Author(s):  
Jinxin Liu ◽  
Pan Wang ◽  
Mengdie Zhou ◽  
Yue Ma ◽  
Xiangheng Niu ◽  
...  
Keyword(s):  
Public Health ◽  
Heavy Metal ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Simultaneous Adsorption ◽  
Artificial Receptors ◽  
Industrial Sewage

Potentially toxic dichlorophenols and heavy metal ions commonly coexist in industrial sewage, posing a serious threat to public health and the environment and making the treatment more challenging.

scholarly journals Removal of a reactive dye and hexavalent chromium by a reusable bacteria attached electrospun nanofibrous web

RSC Advances ◽  
2015 ◽  
Vol 5 (106) ◽  
pp. 86867-86874 ◽  
Author(s):  
Nalan Oya San Keskin ◽  
Aslı Celebioglu ◽  
Omer Faruk Sarioglu ◽  
Alper Devrim Ozkan ◽  
Tamer Uyar ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Hexavalent Chromium ◽  
Reactive Dye

Bacteria have been immobilized onto a polysulfone nanofibrous web and used for the removal of reactive dye and heavy metal.

Organo-montmorillonites for efficient and rapid water remediation: sequential and simultaneous adsorption of lead and bisphenol A

2018 ◽  
Vol 15 (5) ◽  
pp. 286 ◽  
Author(s):  
Chongmin Liu ◽  
Pingxiao Wu ◽  
Lytuong Tran ◽  
Nengwu Zhu ◽  
Zhi Dang
Keyword(s):  
Heavy Metal ◽  
Bisphenol A ◽  
Photoelectron Spectroscopy ◽  
Organic Pollutant ◽  
Water Remediation ◽  
Lead Ion ◽  
Scanning Calorimetry ◽  
X Ray ◽  
Simultaneous Adsorption ◽  
Sequential Adsorption

Environmental contextNovel materials are increasingly being sought-after to remove metals and organic pollutants from water. We investigated two organo-functionalised montmorillonites for sequential and simultaneous adsorption of lead and bisphenol A. Our findings could lead to new approaches for handling emergency complex pollution events. AbstractOrgano-montmorillonites (OMts) modified by two different carbon chain lengths of betaine were used to remove the combined pollution (heavy metal and organic pollutant) from a water environment, sequentially and simultaneously. The properties of OMts were measured with X-Ray Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR) and Thermogravimetry-Differential Scanning Calorimetry (TG-DSC). The independent adsorption of a single pollutant, direct sequential adsorption, indirect sequential adsorption and simultaneous adsorption of bisphenol A (BPA) and lead ion (Pb2+) onto OMts were investigated. Initial concentrations, reaction time, solution pH and the release amount of pre-adsorbed contaminant in the sequential sorption system were also investigated for the adsorption behaviours of Pb2+ and BPA. Two kinetic models and two adsorption isotherms were applied to explain the adsorption process. The adsorptive mechanism of BPA adsorption onto OMts was ascribed to a hydrophobic interaction, while the mechanism for Pb2+ adsorption was attributed to cation exchange, surface adsorption, electrostatic attraction and complexation from the results of specific surface area Brunauer–Emmett–Teller (BET) and X-ray photoelectron spectroscopy (XPS). This study might provide valuable information for the application of novel organoclays to the removal of both heavy metal and organics from water.

Biosorption of chromium(VI), nickel(II) and Remazol Blue by Rhodotorula muciloginosa biomass

2012 ◽  
Vol 65 (3) ◽  
pp. 471-477 ◽  
Author(s):  
Nalan Oya San ◽  
Gönül Dönmez
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Aqueous Solutions ◽  
Metal Concentration ◽  
Metal Ion ◽  
Heavy Metal Concentration ◽  
Reactive Dye ◽  
Ion Concentration ◽  
Chromium Vi

The passive removal of commonly used reactive dye and two heavy metals, from aqueous solutions by inexpensive biomaterial, yeast Rhodotorula muciloginosa biomass, termed biosorption, was studied with respect to pH, initial dye concentration and initial metal ion concentration. The biomass exhibited maximum dye and chromium(VI) uptake at pH 5 and pH 6 for nickel(II) in media containing 50 mg/L heavy metal and 50 mg/L remazol blue. It was found that the highest chromium(VI) removal yields measured were 31.3% for 49.0 mg/l initial chromium(VI) concentrations. The nickel(II) removal yield was 32.5% for 22.3 mg/L. Higher R. Blue removal yields were obtained, such as 77.1% for 117.5 mg/L. The maximum dye biosorption yield was investigated in medium with a constant dye (∼50 mg/L) and increasing heavy metal concentration. In the medium with 48.8, 103.8 and 151.8 mg/L chromium(VI) and constant dye concentration, the maximum chromium(VI) biosorption was 7.4, 9.3 and 17.1%, whereas the maximum dye biosorption was 61.6, 56.6 and 55.9%. The maximum nickel(II) biosorptions in the medium with dye were 38.1, 22.1 and 8.8% at 23.7, 37.7 and 60.1 mg/L nickel(II) concentrations. In these media, dye biosorptions were 93.9, 86.4 and 93.3%, respectively.

Highly efficient simultaneous adsorption of Cd(ii), Hg(ii) and As(iii) ions from aqueous solutions by modification of graphene oxide with 3-aminopyrazole: central composite design optimization

2017 ◽  
Vol 41 (17) ◽  
pp. 8905-8919 ◽  
Author(s):  
M. Alimohammady ◽  
M. Jahangiri ◽  
F. Kiani ◽  
H. Tahermansouri
Keyword(s):  
Heavy Metal ◽  
Graphene Oxide ◽  
Aqueous Solutions ◽  
Metal Ions ◽  
Central Composite Design ◽  
Heavy Metal Ions ◽  
Simultaneous Adsorption ◽  
Modified Graphene Oxide ◽  
Modified Graphene ◽  
Central Composite

Efficient simultaneous adsorption of heavy metal ions from solutions by modified graphene oxide with 3-aminopyrazole using central composite design modeling.

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