Article
Engineering, Chemical
Weigao Zhao, Yimei Tian, Xianxian Chu, Limin Cui, Hongwei Zhang, Mei Li, Peng Zhao
Summary: MMWCNTs combine the satisfactory adsorption properties of MWCNTs with the magnetic separation of nanoparticles, exhibiting remarkable magnetic separability and high adsorption capacity. The TC adsorption onto MMWCNTs mainly involves chemical and monolayer adsorption, and the regeneration performance is excellent, maintaining a high removal efficiency even after six cycles.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Review
Chemistry, Multidisciplinary
Rajarathinam Nithya, Arunachalam Thirunavukkarasu, Arunachalam Bose Sathya, Raja Sivashankar
Summary: The use of magnetic nanomaterials for dye adsorption in wastewater treatment shows great potential for effective removal of colored contaminants in water. Adsorption technology in wastewater treatment offers advantages of low cost, high efficiency, and reliability, making it an effective method for treating dye wastewater.
ENVIRONMENTAL CHEMISTRY LETTERS
(2021)
Article
Engineering, Environmental
Guobin Song, Yawei Shi, Haonan Wang, Anqi Li, Wanran Li, Ya Sun, Guanghui Ding
Summary: The excellent properties of micro-nano materials and structures have attracted extensive attention in wastewater treatment. In this study, magnetic multi-walled carbon nanotubes (MMWCNTs) were prepared and used for the sorptive removal of five typical cationic dyes from aqueous solutions. The effects of various factors on the adsorption process were investigated, and it was found that the kinetics processes could be well described by the pseudo-second-order kinetic model. The results showed that the MMWCNTs had high adsorption capacities and could be regenerated for reuse.
WATER SCIENCE AND TECHNOLOGY
(2022)
Article
Environmental Sciences
Mansour A. S. Salem, Amjad Mumtaz Khan, Yahiya Kadaf Manea, Ajaz Ahmad Wani
Summary: The CoBi-LDH/Cr@CNT composite was successfully synthesized and showed significant adsorption efficiency for lead and organic dyes, with a removal efficiency of up to 100%. It can be utilized as an effective adsorbent for pollutant removal in wastewater treatment.
Article
Materials Science, Ceramics
Alei Dang, Zeqi Yuan, Xin Liu, Shuze Ma, Yali Yang, Amir Zada, Yali Gao, Yuhui Liu, Tiehu Li, Yanying Han
Summary: The preparation of high performance, low cost and recyclable adsorbents is crucial for dealing with water pollution. Carbon foam (CF) is a promising adsorbent, but its uneven size distribution and lack of adsorption sites hinder its application. In this study, CF/CNTs/GO composites were successfully prepared, and the addition of CNTs and GO nanosheets significantly improved the adsorption performance. This work provides a low-cost fabrication technique for high-performance CF/CNTs/GO adsorbents and contributes to the treatment of contaminated water.
CERAMICS INTERNATIONAL
(2023)
Article
Energy & Fuels
Ya-Ling Yu, Jun Cao
Summary: This study developed Nelumbinis stamen activated carbon (NSAC) through phosphoric acid activation and carbonization processes. The NSAC was characterized for its surface morphology, structural features, and surface chemistry. The optimal operating conditions were determined to maximize the removal efficiency of Sudan dyes. The NSAC exhibited high adsorption capacity for the dyes and the adsorption process was found to be spontaneous, feasible, and endothermic.
BIOMASS CONVERSION AND BIOREFINERY
(2023)
Article
Biotechnology & Applied Microbiology
Aruna Yadav, Nisha Bagotia, Sarita Yadav, Ashok K. Sharma, Surender Kumar
Summary: In this study, a novel biosorbent was developed using Saccharum munja (SM) plant biomass and functionalized carbon nanotube (CNT) composites to remove safranine O and methylene blue dyes. The adsorption process showed maximum removal at neutral pH and the 1%CNT+SM composite had enhanced adsorption capacity. Additionally, the composites exhibited higher affinity in removing safranine O dye in binary systems.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2021)
Article
Engineering, Environmental
Payam Arabkhani, Hamedreza Javadian, Arash Asfaram, Fardin Sadeghfar, Fatemeh Sadegh
Summary: The magnetic tungsten disulfide/carbon nanotubes nanocomposite showed high efficiency in the ultrasound-assisted removal of dyes, with maximum adsorption capacities of 174.8 mg g-1 and 166.7 mg g-1 for AM and BB FCF, respectively. The adsorption process was described by Langmuir isotherm and pseudo-second-order kinetic models, with thermodynamic study indicating endothermic and spontaneous adsorption of dyes.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Environmental Sciences
Fan Yang, Can Jin, Sen Wang, Yujie Wang, Lu Wei, Longhui Zheng, Haiping Gu, Su Shiung Lam, Mu. Naushad, Cheng Li, Christian Sonne
Summary: Due to the increasing pollution of antibiotics in water, the development of green and efficient adsorbents is urgently needed. In this study, magnetic bamboo-based activated carbon (MDBAC) was prepared through delignification and carbonization using ZnCl2 as an activator. MDBAC demonstrated a large specific surface area (1388.83 m2 g-1) and showed excellent adsorption performance for sulfadiazine (SD), with an adsorption capacity of 645.08 mg g-1. The MDBAC biosorbent exhibited physicochemical stability, magnetic recovery, and recyclability properties, making it a promising candidate for removing antibiotic contaminants from wastewater.
Article
Environmental Sciences
Ziyi Shen, Jie Jin, Jingjing Fu, Meng Yang, Feihu Li
Summary: The co-occurrence of arsenic and fluoride in water can lead to health concerns. Magnetic biochars with aluminum and magnesium oxides show enhanced adsorption capacity for both AsV and F-.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Engineering, Chemical
Wenwen Li, Chuncai Zhou, Chen Li, Wenrui Zhu, Jiaqian Shi, Guijian Liu
Summary: To address the supply-demand contradiction of gallium metal, this study presents a method of preparing 2CNT/UiO-66-NH2 composite materials that combine carbon nanotubes with metal-organic frameworks. These materials improve the recovery and utilization efficiency of gallium in aqueous solutions. The adsorbent exhibits high adsorption efficiency and selective adsorption for gallium, providing a more efficient and economical solution for the future exploitation of gallium supplies.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Environmental
Cheong Sheng Lee, Siew Hoong Shuit, Chuan Chuan Lim, Qi Hwa Ng, Peng Yong Hoo, Steven Lim, Yi Peng Teoh
Summary: In this study, two different carbon nanotube adsorbents were synthesized using a solvent-free direct doping method, and their adsorption performance for methylene blue was investigated. The results showed that carbon nanotubes doped with iron oxide had a higher specific surface area and better adsorption capacity. Moreover, the stability of the doping materials under different pH conditions was also studied.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Environmental Sciences
Guobin Song, Anqi Li, Yawei Shi, Wanran Li, Haonan Wang, Chunchao Wang, Ruijuan Li, Guanghui Ding
Summary: In this study, five magnetic multi-walled carbon nanotubes with different diameters were prepared and their performance in removing methylene blue from water was investigated. The surface of these nanotubes was decorated with Fe3O4 nanoparticles, making them superparamagnetic. The results showed promising potential for these nanotubes as adsorbents for dye removal in wastewater treatment.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Agricultural Engineering
Issam Mechnou, Sarra Meskini, Yosra Raji, Jihane Kouar, Miloudi Hlaibi
Summary: Researchers developed an aluminum/carbon composite from olive mill wastewater and sucrose, which was successfully used for the removal/separation of malachite green and acid yellow 61, as well as the treatment of denim dye wastewater. The optimized composite exhibited microporous structure, high specific surface area, rich anionic sites, and efficient separation capacity. The study also showed that the composite could be used repeatedly without significant loss of performance. This study opens up new economic opportunities for farmers and rural communities by utilizing agricultural liquid waste to develop carbon composites for industrial dye removal and separation.
BIORESOURCE TECHNOLOGY
(2023)
Article
Chemistry, Physical
Yujie Hu, Changjun Zou
Summary: A magnetic material based on carbon nanotubes (CB[7]@Fe3O4/MWCNT -NH2) was fabricated for the effective removal of Pb (II) in water. The material showed excellent adsorption capabilities with a maximum adsorption capacity of 245.6 mg g(-1) at 20 degrees C. The adsorption process followed the Langmuir isotherm model and pseudo-second-order kinetic model.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
