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| Preparation of Biochar-based Paper Sludge and Its Application in Absorption on Methyl Orange |
| Received:February 23, 2023 |
| DOI：10.11981/j.issn.1000-6842.2023.04.55 |
| Key Words:biochar;adsorption;paper mill sludge;methyl orange |
| Fund Project:广东省普通高校重点科研平台项目（2022KCXTD035）；广州科技职业技术大学2022年校级科研团队建设项目（2022KYTD015）。 |
| Author Name | Affiliation | E-mail | | CHEN Hua* | Guangzhou Vocational and Technical University of Science and Technology， Guangzhou， Guangdong Province， 510550 | 153318099@qq.com | | HU Xiaopeng | Changge City Dayang Paper Industry Co.， Ltd.， Changge， He’nan Province， 461500 | | | CUI Yingde | College of Chemistry and Chemical Engineering， Zhongkai University of Agriculture and Engineering， Guangzhou， Guangdong Province， 510225 | |
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| Abstract: |
| In this study， iron-doped biochar （PBC） was prepared by one-step pyrolysis with paper mill sludge （PMS） containing iron salt， and the adsorption properties for methyl orange were studied. The results showed that the biochar material obtained at 800 ℃ had the best methyl orange removal performance at pH value of 3 and adsorption time of 24 h. The adsorption of methyl orange by PBC-800 conformed to the quasi-second-order kinetic model and Langmuir adsorption model. The adsorption process of PBC-800 on methyl orange was chemical adsorption， and the maximum adsorption capacity was 352.05 mg/g. |
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