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[1]胡波,周奥,牛慧斌,等.香蒲根富Fe生物炭制备及其光催化降解有机污染物[J].中国给水排水,2022,38(15):55-60.
　HUBo,ZHOUAo,NIUHui-bin,et al.Preparation of Fe?enriched Biochar from Typha Orientalis Presl Root and Its Photocatalytic Degradation of Organic Pollutants[J].China Water & Wastewater,2022,38(15):55-60.

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香蒲根富Fe生物炭制备及其光催化降解有机污染物

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第38卷期数: 2022年第15期页码: 55-60 栏目: 出版日期: 2022-08-01

Title:: Preparation of Fe?enriched Biochar from Typha Orientalis Presl Root and Its Photocatalytic Degradation of Organic Pollutants

作者:: 胡波¹，周奥²，牛慧斌^2,3，赢登宇²，方艳芬²，黄应平^2,3; （1.湖北泰盛化工有限公司，湖北宜昌 443007；2.三峡大学生物与制药学院，湖北宜昌 443002；3.三峡大学水利与环境学院，湖北宜昌 443002）

Author(s):: HU　Bo¹， ZHOU　Ao²， NIU　Hui-bin^2，3， YING　Deng-yu²， FANG　Yan-fen²，HUANG　Ying-ping^2，3; （1. Hubei Trisun Chemical Co. Ltd.， Yichang 443007， China； 2. College of Biology and Pharmacy， China Three Gorges University， Yichang 443002， China； 3. College of Hydraulic and Environmental Engineering， China Three Gorges University， Yichang 443002， China）

关键词:: Fe污染; 超富集; 生物炭; Fenton体系; 光催化

Keywords:: Fe pollution; hyper-enrichment; biochar; Fenton system; photocatalytic

摘要:: 超富集植物常用来去除土壤中的有害金属，这些废弃植物的后续转化研究对碳的可持续性利用具有重要意义。通过厌氧热裂解法将富集Fe后的香蒲根制备为Fe/生物炭（Fe/BC）材料，并采用扫描电子显微镜、能谱分析仪、X射线衍射仪和原子吸收光谱仪等对Fe存在的形貌、含量及化学组成进行了表征。结果表明，Fe主要以球形的Fe₂O₃镶嵌在生物炭表面，并且负载量达到64.76 mg/g。在宽pH（3~9）条件下， Fe/BC/H₂O₂体系能高效地降解有机染料磺酰罗丹明B（SRB），降解率可达90%（2 h），且突破了传统Fenton体系必须在强酸性条件下使用的局限。自由基捕获实验发现羟基自由基为该体系的主要活性物种。Fe/BC/H₂O₂体系在经过5次循环后对SRB仍能保持81.6%的降解率，且此过程中无Fe离子溶出，表明Fe/BC作为催化剂具有优异的稳定性。

Abstract:: Hyperaccumulators are commonly used to remove harmful metals from soil, and subsequent transformation studies of these waste plants are of great significance for sustainable carbon utilization. Fe/biochar (Fe/BC) materials were made from the Fe-enriched Typha Orientalis Presl root by anaerobic pyrolysis. The morphology, content and chemical composition of Fe over Fe/BC samples were analyzed by scanning electron microscope (SEM), energy dispersive spectrometer (EDS), X-ray diffractometer (XRD) and atomic absorption spectrometry (AAS). The results showed that Fe was mainly embedded in the surface of biochar in the form of spherical Fe₂O₃, and the Fe loading was 64.76 mg/g. Further, the Fe/BC/H₂O₂ system could efficiently degrade the organic dye sulforhodamine B (SRB) under wide pH of 3-9 conditions, with a high degradation rate of 90% (2 h), which was a breakthrough that the traditional Fenton system must be used under strong acid conditions. The radical?trapping experiments unfolded that hydroxyl radical (·OH) was the main active species in the above system. The Fe/BC/H₂O₂system still maintained a degradation rate of 81.6% for SRB after 5 cycles, and no Fe ions were dissolved during this process, indicating that Fe/BC has excellent stability as a catalyst.

更新日期/Last Update: 2022-08-01