10.6084/m9.figshare.5106871.v1
Le Van Thuan
Le Van Thuan
Tran Bao Chau
Tran Bao
Chau
Tran Thi Kieu Ngan
Tran Thi Kieu
Ngan
Tran Xuan Vu
Tran Xuan
Vu
Dinh Duc Nguyen
Dinh Duc
Nguyen
Minh-Hiep Nguyen
Minh-Hiep
Nguyen
Dang Thi Thanh Thao
Dang Thi Thanh
Thao
Nguyen To Hoai
Nguyen To
Hoai
Le Hoang Sinh
Le Hoang Sinh
Preparation of cross-linked magnetic chitosan particles from steel slag and shrimp shells for removal of heavy metals
Taylor & Francis Group
2017
Cross-linked magnetic chitosan
metal ion removal
steel slag
shrimp shells
green tea
2017-06-14 05:28:52
Dataset
https://tandf.figshare.com/articles/dataset/Preparation_of_cross-linked_magnetic_chitosan_particles_from_steel_slag_and_shrimp_shells_for_removal_of_heavy_metals/5106871
<p>In this study, a new method for preparation of cross-linked magnetic chitosan particles (MCPs) from steel slag and shrimp shells using green tea extract as crosslinking reagent has been presented. The MCPs obtained were characterized by means of X-ray diffraction analysis, Fourier-transform infrared spectroscopy, scanning electron microscopy and magnetic properties, and then were used to investigate the adsorption properties of Cu(II) and Ni(II) ions in aqueous solutions. The influence of experimental conditions such as contact time, pH value, adsorbent dose and initial metal concentration, and the possibility of regeneration were studied systematically. The Cu(II) and Ni(II) adsorption isotherms, kinetics and thermodynamics have been measured and discussed. The results show that the synthesized MCPs have high adsorption capacity for both metal ions (126.58 mg/g for Cu(II) and 66.23 mg/g for Ni(II)), and have excellent regeneration stability with efficiency of greater than 83% after five cycles of the adsorption–regeneration process. The adsorption process of Ni(II) and Cu(II) on MCPs was feasible, spontaneous and exothermic, and better described by the Langmuir model and pseudo-second-order kinetic equation. The MCPs can be applied as a low cost and highly efficient adsorbent for removal of heavy metals from wastewater due to its high adsorption capacity, easy recovery and good reusability.</p>