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基于松香酸、乳香酸和壳聚糖/磁铁矿的环保吸附剂，用于从水面去除废油。

Eco-friendly adsorbents based on abietic acid, boswellic acid, and chitosan/magnetite for removing waste oil from the surface of the water.

机构信息

Polymer Lab, Petrochemical Department, Egyptian Petroleum Research Institute, Nasr City, Cairo, Egypt.

Surfactant Lab, Petrochemical Department, Egyptian Petroleum Research Institute, Nasr City, Cairo, Egypt.

出版信息

Environ Sci Pollut Res Int. 2022 Sep;29(43):64633-64646. doi: 10.1007/s11356-022-20169-2. Epub 2022 Apr 26.

DOI:10.1007/s11356-022-20169-2
PMID:35474426
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9481516/
Abstract

Petroleum oil leakage and industrial oily waste on the water surface are sustainable pollutions. The removal process by eco-friendly adsorbents is a critical challenge. It also requires sustainable treatment. The natural hydrophobic material such as abietic acid, boswellic acid, and chitosan was added to magnetite nanoparticles with different concentrations of 10, 15, and 20% on its surface. The magnetite acquires partially hydrophobic properties. The prepared natural adsorbents were analyzed by employing wide-angle X-ray diffraction (WAXD), vibrating sample magnetometer (VSM), Fourier transform infrared spectroscopy (FTIR), scanning electron microscope (SEM), particle size and zeta potential, and contact angle measurements. Chitosan adsorbs at the outer surface of magnetite nanoparticles while boswellic and abietic absorb in bulk. All prepared adsorbents are effective in adsorbing waste oil from the water surface. The contact angle of MB20 (magnetite/20 percent boswellic) is greater than that of MA20 and MC20 (magnetite/20% abietic or chitosan, respectively), indicating that it has more hydrophobic characteristics. The oil removal efficiency and adsorption capacity of MB20 are the highest values 57.6%, and 24 g/g, respectively. All eco-friendly adsorbents are nontoxic with low-cost production and are used many times.

摘要

石油泄漏和工业含油废物是持续性的污染。用环保吸附剂进行清除是一个关键挑战，还需要可持续的处理。将天然疏水性物质，如松香酸、乳香酸和壳聚糖添加到表面浓度分别为 10%、15%和 20%的磁铁矿纳米粒子上，磁铁矿获得部分疏水性。通过广角 X 射线衍射（WAXD）、振动样品磁强计（VSM）、傅里叶变换红外光谱（FTIR）、扫描电子显微镜（SEM）、粒径和zeta 电位以及接触角测量对制备的天然吸附剂进行分析。壳聚糖吸附在磁铁矿纳米粒子的外表面，而乳香酸和松香酸则在其内部吸附。所有制备的吸附剂都能有效地从水面吸附废油。MB20（磁铁矿/20%乳香酸）的接触角大于 MA20 和 MC20（磁铁矿/20%松香或壳聚糖），表明其具有更强的疏水性。MB20 的除油效率和吸附容量分别达到了 57.6%和 24 g/g，最高值。所有环保吸附剂均具有低毒性、低成本生产和可多次使用的特点。

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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6b5c/9481516/e2c481a7357a/11356_2022_20169_Fig10_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6b5c/9481516/63b6bd097c3e/11356_2022_20169_Fig11_HTML.jpg
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