AI Article Synopsis
- Researchers synthesized alginate-modified biochar (MBC) from rice husk waste to enhance lead (Pb II) ion removal from wastewater.
- MBC showed a significant increase in surface area and pore volume compared to regular rice husk biochar (RhBC), leading to a greater adsorption capacity for Pb (II).
- The study indicated that MBC can effectively remove over 99% of Pb (II) in wastewater and maintain high performance across multiple usage cycles, suggesting its practical application in Vietnam.
Article Abstract
In this work, alginate-modified biochar derived from rice husk waste was synthesized using a simple process. The modified biochar (MBC) and rice husk biochar (RhBC) were investigated for removing Pb (II) ions in wastewater. The BET result displayed significantly improved specific surface area of MBC up to 120 m/g along with a total pore volume of 0.653 cm/g. FTIR spectrums presented the higher oxygen-contained functional groups of MBC as compared to RhBC, resulting in increasing adsorption capacity of Pb (II). MBC had higher adsorption capacity (112.3 mg/g) and faster removal rate (0.0081 g mg min) than those of RhBC (41.2 mg/g and 0.00025 g mg min). Modified RhBC can remove more than 99% of Pb (II) from wastewater and it could be utilized for three cycles with a removal performance of over 90%. In addition, the Pb adsorption mechanism by using MBC was proposed and the practical application of MBC for the treatment of wastewater in Vietnam was discussed.
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| http://dx.doi.org/10.1016/j.chemosphere.2022.135956 | DOI Listing |
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