scholarly journals Degradation of diuron by heterogeneous electro-Fenton using modified magnetic activated carbon as the catalyst

RSC Advances ◽  
2018 ◽  
Vol 8 (36) ◽  
pp. 19971-19978 ◽  
Author(s):  
Xi Wang ◽  
Kai Zhu ◽  
Xiaoyue Ma ◽  
Zhirong Sun ◽  
Xiang Hu
Keyword(s):  
Activated Carbon ◽  
Magnetic Particles ◽  
Magnetic Activated Carbon ◽  
System P ◽  
Fenton System

The magnetic particles were firstly coated with PTFE for the degradation of diuron in a heterogeneous electro-Fenton system.

Preparation of Magnetically Separable Composite Photocatalyst: Titania Coated Magnetic Activated Carbon

2015 ◽  
Vol 719-720 ◽  
pp. 145-156
Author(s):  
Qing Wei Zhang ◽  
Wei Xie ◽  
Bao Hong Shen ◽  
Qiang Xie ◽  
Xiao Liang Li
Keyword(s):  
Activated Carbon ◽  
Magnetic Particles ◽  
Sol Gel ◽  
Carbon Matrix ◽  
Phenol Removal ◽  
Step Method ◽  
Visible Absorption ◽  
Magnetic Activated Carbon ◽  
Magnetic Stability ◽  
Embedded Type

In the present work, the embedded-type TiO2/magnetic activated carbon (TiO2/MAC) photocatalysts were prepared. The MAC support was manufactured by one-step method and the TiO2coated on the surface of MAC was prepared by sol-gel method. Its crystalline structural properties, morphology, magnetic performances and pore texture were characterized by XRD, SEM, TEM, ultraviolet-visible absorption spectra (Uv-vis), vibrating sample magnetometry (VSM) and N2adsorption isotherm. Characterization results showed that TiO2was highly dispersed on the surface of MAC support in the form of anatase with a particle size of 10 nm. Obtained TiO2/MAC photocatalysts were applied to treatment of contaminant phenol in aqueous solution. The phenol removal percentage by TiO2/MAC photocatalyst is as high as 94% after three cycles. In addition, photocatalytic degradation of phenol in water was examined using TiO2/MAC photocatalysts. The results show that 4wt% Fe3O4was suitable to prepare the support of TiO2/MAC composite. The phenol removal percentage by TiO2/MAC photocatalyst is as high as 94% after three cycles. However, the adsorption capability of photocatalyst disappears after six cycles, while its phenol removal percentage via photodegradation is still as high as 60%. Meanwhile, the used TiO2/MAC photocatalyst after six cycles still maintains good magnetic stability because the majority of magnetic particles are embedded into the bulk of carbon matrix. And the embedded structure could still meet the requirement of magnetic separation by an external magnetic field.

scholarly journals Synthesis of Magnetic Activated Carbon Treated with Sodium Dodecyl Sulphate

2021 ◽  
Vol 29 (1) ◽  
Author(s):  
Palsan Sannasi Abdullah ◽  
Huda Awang ◽  
Jayanthi Barasarathi
Keyword(s):  
Methylene Blue ◽  
Activated Carbon ◽  
Iron Powder ◽  
Sodium Dodecyl Sulphate ◽  
Magnetic Particles ◽  
Sodium Dodecyl ◽  
Chemical Properties ◽  
Performance Study ◽  
Methylene Blue Adsorption ◽  
Magnetic Activated Carbon

Magnetic activated carbon (MAC) is found to be effective for the adsorption of methylene blue due to its physico-chemical properties such as strong adsorption of magnetization. The use of activated carbon (AC) for methylene blue adsorption was ineffective compared to MAC. MAC was prepared by incorporating different types of iron powder and chemicals [sodium dodecyl sulphate (SDS), citric acid (CA), dimethicone (D350), and epichlorohydrin (C3H5ClO)] to strengthen the magnetism and stabilize the MAC. The methylene blue test and iodine test were tested on different samples. Characterization test on physical and chemical properties was carried out using Scanning Electron Microscopy (SEM) and X-ray diffraction (XRD). The yield of MAC was higher because of the addition of magnetic particles. The incorporation of magnetic particles had been proven by the SEM and XRD analysis that showed the presence of iron compound. The performance study of the adsorbent sample showed that MAC_A3II presented better qualities with highest removal percentage (98.81 % of removal) in methylene blue adsorption and low magnetic contact time that showed strong magnetism. MAC_A3II was prepared by incorporating iron powder and treated by using sodium dodecyl sulphate (SDS). Among all the adsorbent sample, MAC_B2III performed the weakest quality because the dye removal percentage was low, and the preparation process was complicated compared with others.

Preparing a magnetic activated carbon with expired beverage as carbon source and KOH as activator

2019 ◽  
Vol 96 ◽  
pp. 575-587 ◽  
Author(s):  
Yunjie Liu ◽  
Zhibao Huo ◽  
Zhiyuan Song ◽  
Chuntao Zhang ◽  
Dezhang Ren ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Carbon Source ◽  
Magnetic Activated Carbon

The oxygen reduction reaction of two electron transfer of nitrogen-doped carbon in the electro-Fenton system

2020 ◽  
Vol 44 (38) ◽  
pp. 16584-16593
Author(s):  
Jiayi Feng ◽  
Yonggang Zhang
Keyword(s):  
Electron Transfer ◽  
Oxygen Reduction Reaction ◽  
Cathode Material ◽  
Degradation Mechanism ◽  
Reduction Reaction ◽  
Nitrogen Doped ◽  
System P ◽  
Nitrogen Doped Carbon ◽  
Fenton System ◽  
Ti Mesh

Degradation mechanism of ORR for the NGO-Ti mesh cathode material in the EF process.

scholarly journals Efficient tetracycline removal from aqueous solutions using ionic liquid modified magnetic activated carbon (IL@mAC)

2021 ◽  
Author(s):  
Edris Bazrafshan ◽  
Amin Allah Zarei ◽  
Leili Mohammadi ◽  
Muhammad Nadeem Zafar ◽  
Maryam Foroughi ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Activated Carbon ◽  
Wastewater Treatment Plants ◽  
Correlation Coefficients ◽  
Antibacterial Drug ◽  
Adsorption Efficiency ◽  
Operational Parameters ◽  
Magnetic Activated Carbon ◽  
Urban Wastewater Treatment ◽  
Poor Absorption

Abstract Tetracycline (TCy) belongs to PPCPs is such an widely used antibacterial drug, which is discharged from urban wastewater treatment plants or agricultural effluents. Due to low metabolism, poor absorption, overuse, and misuse, TCy is considered as threat to environmental and its removal from waste-water is vital. In this research, a novel ionic liquid modified magnetic activated carbon nanocomposite (IL@mAC) was synthesized, characterized, and the adsorption efficiency of IL@mAC for removal of TCy was investigated under different operational parameters of pH (3–11); dose of IL@mAC (0.01–0.1 g/50 mL); reaction time (30–240 min), and initial TCy concentration (50-1500 mg/L). The IL@mAC characterization was done using XRD, VSM, SEM-EDX, BET, and FTIR. Results of equilibrium experiment showed that the highest removal efficiency (~ 98%) was obtained using 0.06 g of IL@mAC in 135 min at pH 7 and temperature 303 K. Considering the correlation coefficients (R2) for different adsorption models, it can be deduced that adsorption of TCy onto IL@mAC is better followed by Langmuir (0.9977) in comparison to Freundlich (0.9412), and Temkin (0.9536) models. Furthermore, Langmuir adsorption capacity was observed to be 666.7 mg/g. The regeneration study showed that IL@mAC retained around 85% TCy adsorption efficiency after 6th cycle. Finally, the present study indicates that the IL@mAC is of a high applicability and has extremely high adsorbent capacity to remove TCy from water compared to most of other benchmark adsorbents reported in literature.

Sign in / Sign up

Export Citation Format

Share Document