Journal
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
Volume 10, Issue 3, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jece.2022.107531
Keywords
Sulfuration; Loading; Adsorption; Biochar; Modification
Categories
Funding
- National Natural Science Fund for Distinguished Young Scholars [41625002]
- National Natural Science Foundation of China [42007113]
- Opening Foundation of Key Labora-tory of Environmental Pollution Prevention and Control of Producing Area [19cdhj-4]
- Young Talents Project of Northeast Agricultural University [19QC14]
- Ministry of Agriculture/Tianjin Key Laboratory of Agro-Environment and Agricultural Product Safety
Ask authors/readers for more resources
Sulfide-iron decorated biochar (BC-Fe-S) was used for the removal of cadmium (Cd) and lead (Pb) from water. BC-Fe-S exhibited pH-dependent uptake capacities and conformed to pseudo-second-order and Langmuir models. Thermodynamic consequences showed that the contaminants uptake proceeded spontaneously. BC-Fe-S primarily bound Cd(II)/Pb(II) through chelation, ion exchange, co-precipitation, and electrostatic interaction.
Sulfide-iron decorated biochar described as BC-Fe-S was prepared and employed for the elimination of cadmium (Cd) and lead (Pb) from water. Characterizations not only proved the loading of Fe2O3 onto biochar, but also attested the sulfuration of biochar. The resultant BC-Fe-S exhibited pH-dependent uptake capacities with rapid equilibriums within 30 min conforming to pseudo-second-order model. Moreover, BC-Fe-S possessed excellent pollutants uptake in a high affinity to Langmuir model with theoretical monostromatic uptake capacities of 57.71 mg/g concerning Cd(II) and 124.62 mg/g for Pb(II). Thermodynamic consequences exposed that the contaminants uptake proceeded spontaneously with enhancive randomness and exothermic peculiarities. The BC-Fe-S was proved to bind the Cd(II)/Pb(II) primarily via chelation, ion exchange, co-precipitation, and electrostatic interaction. Additionally, the elimination of Cd(II)/Pb(II) by BC-Fe-S dropped fractionally after four adsorption-desorption processes. Overall, co-modification of sulfuration and Fe-based particles loading was useful for decorating biochar to adsorptive elimination of heavy metals from water.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available