Effect of Modified Biochar Prepared by Co-pyrolysis of MgO on Phosphate Adsorption Performance and Seed Germination
文献类型：期刊论文
| 作者 | Tu, Panfeng2; Zhang, Guanlin2,3; Cen, Yingyuan2; Huang, Baoyuan1; Li, Juan2; Li, Yongquan2; Deng, Lifang1; Yuan, Haoran1,3 |
| 刊名 | CHEMPLUSCHEM
 |
| 出版日期 | 2023-11-15 |
| 页码 | 10 |
| 关键词 | adsorption biochar co-pyrolysis phosphate MgO modification seed germination |
| ISSN号 | 2192-6506 |
| DOI | 10.1002/cplu.202300305 |
| 通讯作者 | Deng, Lifang(nannandeng@163.com) |
| 英文摘要 | Biochar is currently used as a phosphate adsorbent in water and subsequently as a soil amendment. In this study, modified biochar was prepared directly by co-pyrolysis of MgO and rice straw, and a preliminary ecotoxicological assessment was performed before the application of modified biochar to soil. The effects of single factors, such as pyrolysis temperature, dosage, pH, and coexisting ions, on phosphate adsorption performance were investigated. In addition, after phosphate adsorption, the effects of modified biochar leachate on the germination of corn and rice seeds were examined. The results showed that phosphate adsorption by the modified biochar first increased and then decreased as the pyrolysis temperature increased, with modified biochar prepared at 800 degrees C showing the greatest adsorption. In addition, a comprehensive cost analysis showed that the best phosphate adsorption effect of modified biochar was achieved at a dosage of 0.10 g and a solution pH of 3. In contrast, the presence of competitive coexisting ions, Cl-, NO3-, CO32-, and SO42-, reduced the phosphate adsorption capacity of the modified biochar. The adsorption kinetics results revealed that the process of phosphate adsorption by the modified biochar was more in line with the pseudo-second-order model and dominated by chemisorption. Moreover, the adsorption isotherm results indicated that the process was more in line with the Langmuir model and dominated by monomolecular layer adsorption, with a maximum adsorption of 217.54 mg/g. Subsequent seed germination tests showed that phosphate-adsorbed modified biochar leachate had no significant effect on the germination rate of corn seeds, whereas it improved the germination rate of rice seeds. Together, these results provide guidance for the application of modified biochar firstly as an adsorbent of phosphate and subsequently as a soil remediator. Modified biochar that was prepared directly by co-pyrolysis of MgO and rice straw at 800 degrees C exhibited the best phosphate adsorption, and the adsorption process was dominated by chemisorption and monomolecular layer adsorption. The leachate of the modified biochar adsorbed with phosphate improved the germination rate of rice seeds. Together, these results provide guidance for the application of modified biochar firstly as an adsorbent of phosphate and subsequently as a soil remediator.image |
| WOS关键词 | DOUBLE HYDROXIDES KINETICS ; AQUEOUS-SOLUTION ; REMOVAL ; RECOVERY ; SORPTION ; WATER ; AL |
| 资助项目 | This work was financially supported by the Basic and Applied Basic Research Foundation of Guangdong Province (2022A1515010941), Science and Technology Plan Projects of Guangzhou (202206010069), Meizhou Science and Technology Project (2021A0304001), and the[2022A1515010941] ; Basic and Applied Basic Research Foundation of Guangdong Province[202206010069] ; Science and Technology Plan Projects of Guangzhou[2021A0304001] ; Meizhou Science and Technology Project[2020B020215003] ; Key-Area Research and Development Program of Guangdong Province |
| WOS研究方向 | Chemistry |
| 语种 | 英语 |
| WOS记录号 | WOS:001101897700001 |
| 出版者 | WILEY-V C H VERLAG GMBH |
| 资助机构 | This work was financially supported by the Basic and Applied Basic Research Foundation of Guangdong Province (2022A1515010941), Science and Technology Plan Projects of Guangzhou (202206010069), Meizhou Science and Technology Project (2021A0304001), and the ; Basic and Applied Basic Research Foundation of Guangdong Province ; Science and Technology Plan Projects of Guangzhou ; Meizhou Science and Technology Project ; Key-Area Research and Development Program of Guangdong Province |
| 源URL | [http://ir.giec.ac.cn/handle/344007/40223]  |
| 专题 | 中国科学院广州能源研究所 |
| 通讯作者 | Deng, Lifang |
| 作者单位 | 1.South China Agr Univ, Inst Biomass Engn, Guangzhou 510642, Peoples R China 2.Zhongkai Univ Agr & Engn, Guangzhou 510225, Peoples R China 3.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China |
| 推荐引用方式 GB/T 7714 | Tu, Panfeng,Zhang, Guanlin,Cen, Yingyuan,et al. Effect of Modified Biochar Prepared by Co-pyrolysis of MgO on Phosphate Adsorption Performance and Seed Germination[J]. CHEMPLUSCHEM,2023:10. |
| APA | Tu, Panfeng.,Zhang, Guanlin.,Cen, Yingyuan.,Huang, Baoyuan.,Li, Juan.,...&Yuan, Haoran.(2023).Effect of Modified Biochar Prepared by Co-pyrolysis of MgO on Phosphate Adsorption Performance and Seed Germination.CHEMPLUSCHEM,10. |
| MLA | Tu, Panfeng,et al."Effect of Modified Biochar Prepared by Co-pyrolysis of MgO on Phosphate Adsorption Performance and Seed Germination".CHEMPLUSCHEM (2023):10. |
入库方式： OAI收割
来源：广州能源研究所
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