scholarly journals Thermodynamic and kinetic study of the intrinsic adsorption capacity of graphene oxide for malachite green removal from aqueous solution

2014 ◽  
Vol 30 (4) ◽  
pp. 1463-1474 ◽  
Author(s):  
Prawit Nuengmatcha ◽  
Ratana Mahachai ◽  
Saksit Chanthai
Keyword(s):  
Aqueous Solution ◽  
Graphene Oxide ◽  
Kinetic Study ◽  
Adsorption Capacity ◽  
Malachite Green

scholarly journals Study on the adsorption of methylene blue from aqueous solution using hydrogel glucomannan/graphene oxide

2021 ◽  
Vol 10 (1) ◽  
pp. 59-66
Author(s):  
Son Le Lam ◽  
Phu Nguyen Vinh ◽  
Hieu Le Trung ◽  
Tan Le Thua ◽  
Nhan Dang Thi Thanh ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Methylene Blue ◽  
Graphene Oxide ◽  
Adsorption Capacity ◽  
Organic Dyes ◽  
Dye Adsorption ◽  
Order Kinetic ◽  
Equilibrium Data ◽  
Order Kinetic Model ◽  
Pseudo Second Order

Glucomannan/graphene oxide (GM/GO) hydrogel was synthesized by using calcium hydroxide as the crosslinker. The synthesized material was characterized by using IR, XRD, SEM, EDX and RAMAN technology. The composite hydrogel was used for removal of organic dyes from aqueous solution. The results showed that the GM/GO hydrogel had a porous structure and a high adsorption capacity toward methylene blue (MB). The pseudo-second-order kinetic model could fit the rate equation of MB adsorption onto the GM/GO hydrogel. The adsorption of MB onto GM/GO hydrogel was a spontaneous process. In addition, the equilibrium adsorption isotherm data indicated that equilibrium data were fitted to the Langmuir isotherm and the maximum dye adsorption capacity was 198,69 mg.g-1. Moreover, the hydrogel was stable and easily recovered and adsorption capacity was around 97% of the initial saturation adsorption capacity after being used five times.

scholarly journals Graphene Oxide Adsorption Enhanced by Attapulgite to Remove Pb (II) from Aqueous Solution

2019 ◽  
Vol 9 (7) ◽  
pp. 1390 ◽  
Author(s):  
Bigui Wei ◽  
Xiabing Cheng ◽  
Gang Wang ◽  
Hua Li ◽  
Xiaosan Song ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Graphene Oxide ◽  
Adsorption Capacity ◽  
High Efficiency ◽  
Separation Efficiency ◽  
Hydrothermal Reaction ◽  
Adsorption Properties ◽  
Maximum Adsorption Capacity

To improve the adsorption and separation efficiency of lead-containing wastewater by graphene oxide (GO), attapulgite (ATP) was used through a simple hydrothermal reaction. The prepared GO was characterized by SEM, TEM, FTIR, and XPS. The adsorption properties of the prepared GO were investigated. The maximum adsorption capacity of Pb2+ on as-prepared GO at pH 5 and 25 °C was 450.9 mg/g. It is concluded that the as-prepared GO can be used as a high-efficiency adsorbent for lead-containing wastewater.

scholarly journals Recyclable magnetic carbonaceous porous composites derived from MIL-100(Fe) for superior adsorption and removal of malachite green from aqueous solution

RSC Advances ◽  
2019 ◽  
Vol 9 (41) ◽  
pp. 23711-23717 ◽  
Author(s):  
Shu-Hui Huo ◽  
Chen-Xu Liu ◽  
Peng-Xin Zhou ◽  
Jing Yu ◽  
Lei Bai ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Adsorption Capacity ◽  
Malachite Green ◽  
Porous Composites

Magnetic carbonaceous porous composites (MCPCs) showed excellent adsorption capacity (up to 2090 mg g−1) for malachite green with good reusability and stability.

Graphene oxide caged in cellulose microbeads for removal of malachite green dye from aqueous solution

2015 ◽  
Vol 437 ◽  
pp. 277-282 ◽  
Author(s):  
Xiaomei Zhang ◽  
Hongwen Yu ◽  
Hongjun Yang ◽  
Yuchun Wan ◽  
Hong Hu ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Graphene Oxide ◽  
Malachite Green ◽  
Malachite Green Dye

scholarly journals Feasibility of hard acid–base affinity for the pronounced adsorption capacity of manganese(ii) using amino-functionalized graphene oxide

RSC Advances ◽  
2018 ◽  
Vol 8 (8) ◽  
pp. 4162-4171 ◽  
Author(s):  
Anek Suddai ◽  
Prawit Nuengmatcha ◽  
Phitchan Sricharoen ◽  
Nunticha Limchoowong ◽  
Saksit Chanthai
Keyword(s):  
Aqueous Solution ◽  
Graphene Oxide ◽  
Adsorption Capacity ◽  
Functionalized Graphene ◽  
Acid Base ◽  
Functionalized Graphene Oxide

The present study reveals the feasibility of using graphene oxide (GO) functionalized with 3-mercaptopropyl-trimethoxysilane (APTMS) for the removal of Mn(ii) from aqueous solution. The APTMS bound on GO's surface was successfully confirmed by FTIR and EDX.

scholarly journals Adsorption and removal of bisphenol A from aqueous solution by p-phenylenediamine modified magnetic graphene oxide

2017 ◽  
Vol 82 (1) ◽  
pp. 39-50 ◽  
Author(s):  
Xiaosheng Tang ◽  
Ping Tang ◽  
Shihui Si ◽  
Liangliang Liu
Keyword(s):  
Aqueous Solution ◽  
Graphene Oxide ◽  
Bisphenol A ◽  
Adsorption Capacity ◽  
Infrared Spectrometry ◽  
Maximum Adsorption Capacity ◽  
Adsorption Ability ◽  
Magnetic Graphene Oxide ◽  
Magnetic Graphene ◽  
Kinetics And Isotherms

p-Phenylenediamine functionalized magnetic graphene oxide nanocomposites (PPD-MGO) were prepared and utilized in the adsorption and removal of bisphenol A in aqueous solution. The novel nanomaterials were characterized by transmission electron microscopy (TEM), Fourier infrared spectrometry (FT-IR) and vibrating sample magnetometer (VSM). The factors affected the adsorption of bisphenol A including adsorption time, temperature and pH of solution, adsorption kinetics and isotherms were all investigated. The results showed that PPD-MGO nanomaterial exhibited good adsorption ability for bisphenol A and good resuability. The maximum adsorption capacity reached 155.0 mg g-1 at 45?C and pH 7. The removal rate was 99.2 % after three times of adsorption with new nanomaterials. After five cycles adsorption, the adsorption capacity of PPD-MGO remained at 94.0 %. The adsorption of bisphenol A was found that fitted pseudo second order kinetics equations and the Freundlich adsorption model. The experimental results showed the PPD-MGO nanomaterial had a good adsorption ability to remove organic compounds in aqueous solution.

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