Shen, L.; Jin, R.; Chen, W.; Qi, D.; Zhai, S. Preparation of Biochar Composite Microspheres and Their Ability for Removal with Oil Agents in Dyed Wastewater. Materials2023, 16, 6155.
Shen, L.; Jin, R.; Chen, W.; Qi, D.; Zhai, S. Preparation of Biochar Composite Microspheres and Their Ability for Removal with Oil Agents in Dyed Wastewater. Materials 2023, 16, 6155.
Shen, L.; Jin, R.; Chen, W.; Qi, D.; Zhai, S. Preparation of Biochar Composite Microspheres and Their Ability for Removal with Oil Agents in Dyed Wastewater. Materials2023, 16, 6155.
Shen, L.; Jin, R.; Chen, W.; Qi, D.; Zhai, S. Preparation of Biochar Composite Microspheres and Their Ability for Removal with Oil Agents in Dyed Wastewater. Materials 2023, 16, 6155.
Abstract
Oil agents produced from degreasing treatment of synthetic fibers are typical pollutants in printing and dyeing wastewater, which may cause large-scale environmental pollution without proper treatment. How to purify oily dye wastewater with low cost is a key problem at present. In this study, the biochar microspheres with oil removal ability were prepared deriving from waste bamboo chips using hydrothermal method. The structure of biochar microsphere was regulated by the activation and modification processes. The biochar microspheres were characterized and their adsorption behaviors for oily dye wastewater were explored. The results showed that the adsorption efficiency of biochar microspheres for oily dye wastewater (DTY) was improved significantly after the secondary pyrolysis and lauric acid grafting reaction. The maximum COD removal quantity of biochar microspheres for DTY was 889 mg/g with removal rate of 86.06% in 30 min. Besides, the kinetics showed that the chemisorption was the main adsorption manner. The application of biochar microspheres can decrease the costs of oily wastewater treatment and avoid environmental pollution.
Chemistry and Materials Science, Organic Chemistry
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