Li Yongfei, Liu Jiangbo, Li Wenjuan, Dou Miao, Ma Liwa, Wang Qian, Zhao Bin, Chen Gang
State Key Laboratory of Petroleum Pollution Control, Xi'an Shiyou University, Xi'an 710065, China.
Shaanxi Province Key Laboratory of Environmental Pollution Control and Reservoir Protection Technology of Oilfields, Xi'an Shiyou University, Xi'an 710065, China.
Gels. 2023 Apr 1;9(4):285. doi: 10.3390/gels9040285.
Frequent oil spills have caused serious consequences to the ecosystem and environment. Therefore, in order to reduce and eliminate the impact of oil spills on biology and the environment, oil spill remediation materials must be considered. As a kind of cheap and biodegradable natural organic cellulose oil-absorbing material, straw has an important practical significance in the treatment of oil spills. In order to improve the ability of rice straw to absorb crude oil, rice straw was first treated with acid and was then modified with sodium dodecyl sulfate (SDS) through a simple charge effect. Finally, the performance of oil absorption was tested and evaluated. The results illustrate that the oil absorption performance was greatly improved under the conditions of 10% HSO, for a 90 min reaction at 90 °C, under 2% SDS, and reacted for 120 min at 20 °C, and the rate of adsorption for rice straw to crude oil was raised by 3.33 g/g (0.83 to 4.16). Then, the rice stalks before and after the modification were characterized. Contact angle analysis shows that the modified rice stalks display better hydrophobic-lipophilic properties than unmodified rice stalks. The rice straw was characterized by XRD and TGA, and the surface structure of the rice straw was characterized by FTIR and SEM, which explain the mechanism of surface-modified rice straws with SDS to improve their oil absorption capacity.
频繁的石油泄漏对生态系统和环境造成了严重后果。因此，为了减少和消除石油泄漏对生物和环境的影响，必须考虑使用石油泄漏修复材料。稻草作为一种廉价且可生物降解的天然有机纤维素吸油材料，在石油泄漏处理中具有重要的现实意义。为了提高稻草对原油的吸附能力，首先对稻草进行酸处理，然后通过简单的电荷效应用十二烷基硫酸钠（SDS）进行改性。最后，对吸油性能进行了测试和评估。结果表明，在10%硫酸、90℃反应90分钟、2% SDS以及20℃反应120分钟的条件下，吸油性能得到了极大提高，稻草对原油的吸附速率提高了3.33克/克（从0.83提高到4.16）。然后，对改性前后的稻杆进行了表征。接触角分析表明，改性后的稻杆比未改性的稻杆表现出更好的疏水亲油性能。通过XRD和TGA对稻草进行了表征，通过FTIR和SEM对稻草的表面结构进行了表征，这些表征解释了用SDS对稻草进行表面改性以提高其吸油能力的机理。
