Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan.
Department of Seafood Science, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan.
Bioresour Technol. 2019 Jun;281:143-148. doi: 10.1016/j.biortech.2019.02.072. Epub 2019 Feb 16.
In this study, an environmentally friendly and economically viable bamboo biochar (BB) was modified by FeO and was applied for the treatment of real river sediments containing the endocrine disruptor chemical (EDC) 4-nonylphenol (4-NP). The microporosity of FeO-BB was clearly observed from the N adsorption isotherms. The catalytic performance of FeO-BB is highly dependent on pH and the catalyst dosage. The degradation efficiency of 4-NP (85%) was achieved at pH 3.0 using an initial dosage of 3.33 g L FeO-BB and 2.3 × 10 M persulfate (PS) in a biochar-sediment system. The kinetic behavior of 4-NP degradation with catalysis can be accounted by using the Langmuir-Hinshelwood type kinetic model. The MTT assay results indicated that FeO-BB has a low potent cytotoxic effect and is therefore suitable for application in remediation of contaminated sediment.
在这项研究中，用 FeO 改性了一种环保且经济可行的竹生物炭（BB），并将其应用于处理含有内分泌干扰物化学物质（EDC）4-壬基酚（4-NP）的实际河流沉积物。从 N 吸附等温线上清楚地观察到 FeO-BB 的微孔性。FeO-BB 的催化性能高度依赖于 pH 值和催化剂用量。在生物炭-沉积物体系中，使用初始剂量为 3.33g/L FeO-BB 和 2.3×10M 过硫酸盐（PS），在 pH 为 3.0 时可实现 4-NP（85%）的降解效率。用 Langmuir-Hinshelwood 型动力学模型可以解释 4-NP 降解的催化动力学行为。MTT 测定结果表明，FeO-BB 的细胞毒性作用较低，因此适合用于污染沉积物的修复。
