Economical magnetic activated carbon for methylene blue removal from water
This study investigates an easy synthesis method of magnetic activated carbon (Fe3O4/AC) composites by ultrasonic mechanical blending of Fe3O4 particles and activated carbon (AC) powder at different mass ratios. The materials with the best performance were characterized by scanning electron microsco...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2024-01-01
|
| Series: | Next Sustainability |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2949823624000345 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850261393803051008 |
|---|---|
| author | Na Qin Chengxuan Tian Laura Carter Dan Tao Yuxin Zhou Fan Zhang |
| author_facet | Na Qin Chengxuan Tian Laura Carter Dan Tao Yuxin Zhou Fan Zhang |
| author_sort | Na Qin |
| collection | DOAJ |
| description | This study investigates an easy synthesis method of magnetic activated carbon (Fe3O4/AC) composites by ultrasonic mechanical blending of Fe3O4 particles and activated carbon (AC) powder at different mass ratios. The materials with the best performance were characterized by scanning electron microscope (SEM), energy dispersive spectroscopy (EDS), X-ray powder diffraction (XRD), specific surface and porosity analyzer (BET), hysteresis loop meter (VSM), thermogravimetric analysis (TGA), X-ray photoelectron spectroscopy (XPS). The as-prepared Fe3O4/AC was used to remove the contaminant methylene blue (MB) from solution. The effects of initial solution pH, material dosage, and temperature on MB removal were studied. A series of batch experiments demonstrated that the Fe3O4/AC with a mass ratio of Fe3O4 to AC = 1:5 showed a higher adsorption capacity of 251.3 ± 2.0 mg/g at 20 °C and pH = 6.5. Isotherm and kinetic studies indicated that the MB adsorption onto Fe3O4/AC was exothermic in a chemical monolayer adsorption process. The purification mechanism of Fe3O4/AC was investigated, FT-IR results showed that MB molecules adhered to Fe3O4/AC after purification. From the results of XPS full spectrum and high resolution spectrum, the possible purification mechanism is inferred as follows: electronic transfer between =N+ in MB and CO/C─O in Fe3O4/AC, as well as π-π interaction between the skeleton sheet of Fe3O4/AC and aromatic ring of MB. This study provides the theoretical reference and experimental basis for recovery and utilization of easily-obtained Fe3O4/AC to remove MB from wastewater. |
| format | Article |
| id | doaj-art-3b8657cf62744ac5b2963d35251beba2 |
| institution | OA Journals |
| issn | 2949-8236 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Next Sustainability |
| spelling | doaj-art-3b8657cf62744ac5b2963d35251beba22025-08-20T01:55:27ZengElsevierNext Sustainability2949-82362024-01-01410005710.1016/j.nxsust.2024.100057Economical magnetic activated carbon for methylene blue removal from waterNa Qin0Chengxuan Tian1Laura Carter2Dan Tao3Yuxin Zhou4Fan Zhang5College of Science, Nanjing Agricultural University, Nanjing 210095, ChinaCollege of Science, Nanjing Agricultural University, Nanjing 210095, ChinaSchool of Geography, University of Leeds, Leeds LS2 9JT, UKCollege of Science, Nanjing Agricultural University, Nanjing 210095, ChinaCollege of Science, Nanjing Agricultural University, Nanjing 210095, ChinaCollege of Science, Nanjing Agricultural University, Nanjing 210095, China; School of Geography, University of Leeds, Leeds LS2 9JT, UK; Corresponding author at: College of Science, Nanjing Agricultural University, Nanjing 210095, China.This study investigates an easy synthesis method of magnetic activated carbon (Fe3O4/AC) composites by ultrasonic mechanical blending of Fe3O4 particles and activated carbon (AC) powder at different mass ratios. The materials with the best performance were characterized by scanning electron microscope (SEM), energy dispersive spectroscopy (EDS), X-ray powder diffraction (XRD), specific surface and porosity analyzer (BET), hysteresis loop meter (VSM), thermogravimetric analysis (TGA), X-ray photoelectron spectroscopy (XPS). The as-prepared Fe3O4/AC was used to remove the contaminant methylene blue (MB) from solution. The effects of initial solution pH, material dosage, and temperature on MB removal were studied. A series of batch experiments demonstrated that the Fe3O4/AC with a mass ratio of Fe3O4 to AC = 1:5 showed a higher adsorption capacity of 251.3 ± 2.0 mg/g at 20 °C and pH = 6.5. Isotherm and kinetic studies indicated that the MB adsorption onto Fe3O4/AC was exothermic in a chemical monolayer adsorption process. The purification mechanism of Fe3O4/AC was investigated, FT-IR results showed that MB molecules adhered to Fe3O4/AC after purification. From the results of XPS full spectrum and high resolution spectrum, the possible purification mechanism is inferred as follows: electronic transfer between =N+ in MB and CO/C─O in Fe3O4/AC, as well as π-π interaction between the skeleton sheet of Fe3O4/AC and aromatic ring of MB. This study provides the theoretical reference and experimental basis for recovery and utilization of easily-obtained Fe3O4/AC to remove MB from wastewater.http://www.sciencedirect.com/science/article/pii/S2949823624000345Magnetic activated carbonDifferent magnetic contentMethylene blue removalRecovery cycle |
| spellingShingle | Na Qin Chengxuan Tian Laura Carter Dan Tao Yuxin Zhou Fan Zhang Economical magnetic activated carbon for methylene blue removal from water Next Sustainability Magnetic activated carbon Different magnetic content Methylene blue removal Recovery cycle |
| title | Economical magnetic activated carbon for methylene blue removal from water |
| title_full | Economical magnetic activated carbon for methylene blue removal from water |
| title_fullStr | Economical magnetic activated carbon for methylene blue removal from water |
| title_full_unstemmed | Economical magnetic activated carbon for methylene blue removal from water |
| title_short | Economical magnetic activated carbon for methylene blue removal from water |
| title_sort | economical magnetic activated carbon for methylene blue removal from water |
| topic | Magnetic activated carbon Different magnetic content Methylene blue removal Recovery cycle |
| url | http://www.sciencedirect.com/science/article/pii/S2949823624000345 |
| work_keys_str_mv | AT naqin economicalmagneticactivatedcarbonformethyleneblueremovalfromwater AT chengxuantian economicalmagneticactivatedcarbonformethyleneblueremovalfromwater AT lauracarter economicalmagneticactivatedcarbonformethyleneblueremovalfromwater AT dantao economicalmagneticactivatedcarbonformethyleneblueremovalfromwater AT yuxinzhou economicalmagneticactivatedcarbonformethyleneblueremovalfromwater AT fanzhang economicalmagneticactivatedcarbonformethyleneblueremovalfromwater |