基于新型前驱体 Rhizoclonium hookeri 衍生的活性炭的磁性可分离吸附剂,用于快速清理溢油

IF 4.6 2区 生物学 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY Algal Research-Biomass Biofuels and Bioproducts Pub Date : 2024-10-18 DOI:10.1016/j.algal.2024.103762
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引用次数: 0

摘要

由于灾难性溢油事故,大量合成有毒物质最终进入水体,对环境和经济造成长期影响。将海洋藻类作为吸附材料用于溢油修复是一个相对较新的领域,具有巨大的潜力。在此,我们提出了大型藻类 Rhizoclonium hookeri(RH)衍生的磁性可回收活性碳(RHAC@Fe3O4)复合材料,作为一种创新而稳健的溢油清理策略。通过进行批量实验,使用合成海水基质中未使用和使用过的机油对 RHAC@Fe3O4 的吸油效率进行了探测。通过改变时间(10-60 分钟)、剂量(0.2-1 克)和温度(20、30、40 °C),达到了所设计吸附系统的最佳条件。表征研究表明,基于 KOH 的活化对海藻生物炭的孔隙结构和表面功能的形成起到了至关重要的作用。批量实验表明,在使用 0.8 克复合材料 30 分钟后,RHAC@Fe3O4 对模拟溢油的去除率超过 90%。此外,将 Fe3O4 添加到碳材料上可实现磁性分离,从而方便地替代过滤来回收含油复合材料。除了卓越的除油能力外,合成的复合材料在合成海水基质中也表现出了长达五个周期的稳定性能。此外,比较研究显示,与前体物质(即海藻生物炭(71%)和 AC(88%))相比,所制造的 RHAC@Fe3O4 复合材料的固油效率更高(93%)。基于这些研究结果,我们认为所设计的 RHAC@Fe3O4 复合材料具有环保、经济、易回收、吸油能力强等特点,有可能成为溢油清理应用的创新平台。
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Magnetically separable sorbent based on activated carbon derived from a new precursor Rhizoclonium hookeri for facile oil spill clean-up
A huge quantity of synthetic toxic materials ends-up in water bodies causing long-lasting environmental and economic impacts due to catastrophic oil spill. Exploring marine algae as sorbent materials for oil spill remediation is a relatively new area and holds great potential. Herein, macroalgae Rhizoclonium hookeri (RH) derived magnetically recoverable activated carbon (RHAC@Fe3O4) composite has been proposed as an innovative and robust strategy for oil spill clean-up. The oil uptake efficiency of RHAC@Fe3O4 was probed using unused and used motor oil in synthetic seawater matrices by conducting batch wise experiments. Optimal conditions for the designed sorption system were met by varying time (10–60 min), dosage (0.2–1 g) and temperature (20, 30, 40 °C). Characterization studies showed that KOH-based activation played a vital role in developing pore structure and surface functionalities in the algal biochar. Batch experiments demonstrated over 90 % oil removal efficiency of RHAC@Fe3O4 from simulated oil spill after 30 min using 0.8 g of composite. Moreover, Fe3O4 loading onto carbon material allowed magnetic separation as a convenient alternative to filtration for the recovery of oil laden composite. Apart from superior oil removal ability, synthesized composite demonstrated robust performance up to five cycles in synthetic sea water matrices. Additionally, comparative study revealed better oil sequestration efficiency of the fabricated RHAC@Fe3O4 composite (93 %) as compared to its precursors, i.e. algal biochar (71 %) and AC (88 %). Based on these findings, it is advocated that designed RHAC@Fe3O4 composite being eco-friendly, economical and readily recoverable with enhanced oil uptake ability could potentially be an innovative platform for oil spill clean-up applications.
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来源期刊
Algal Research-Biomass Biofuels and Bioproducts
Algal Research-Biomass Biofuels and Bioproducts BIOTECHNOLOGY & APPLIED MICROBIOLOGY-
CiteScore
9.40
自引率
7.80%
发文量
332
期刊介绍: Algal Research is an international phycology journal covering all areas of emerging technologies in algae biology, biomass production, cultivation, harvesting, extraction, bioproducts, biorefinery, engineering, and econometrics. Algae is defined to include cyanobacteria, microalgae, and protists and symbionts of interest in biotechnology. The journal publishes original research and reviews for the following scope: algal biology, including but not exclusive to: phylogeny, biodiversity, molecular traits, metabolic regulation, and genetic engineering, algal cultivation, e.g. phototrophic systems, heterotrophic systems, and mixotrophic systems, algal harvesting and extraction systems, biotechnology to convert algal biomass and components into biofuels and bioproducts, e.g., nutraceuticals, pharmaceuticals, animal feed, plastics, etc. algal products and their economic assessment
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