木质素磺酸钠处理含油污泥的原油回收机理及特性
Mechanism and Characteristics of Oil Recovery from Oily Sludge by Sodium Lignosulfonate Treatment.
作者信息
Ma Yun, Yao Mingzhu, Liu Lu, Qin Chengrong, Qin Baicheng, Deng Ningkang, Liang Chen, Yao Shuangquan
机构信息
Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, School of Light Industrial and Food Engineering, Guangxi University, Nanning 530004, P. R. China.
出版信息
ACS Omega. 2021 Sep 22;6(39):25819-25827. doi: 10.1021/acsomega.1c04369. eCollection 2021 Oct 5.
The separation of oil components from oily sludge is an important component of soil remediation and energy recovery. Therefore, establishing a green and efficient separation technology is of great significance. In this study, oily sludge was separated using sodium lignosulfonate (SL) treatment. The effects of temperature, SL concentration, rotate speed, time, and pH on the oil removal rate were studied. The optimal conditions were as follows: temperature, 30 °C; SL concentration, 2.0 g·L; rotate speed, 200 rpm; time, 60 min; and pH 11. The maximum oil removal rate was 83.21%. The physicochemical properties of oily sludge were analyzed. The soil was looser, and the contact angle (55°) of the soil surface was reduced. Alkanes, aldehydes, ketones, carbonic acids, benzene rings, and alicyclic ethers were removed. The result shows that the SL treatment removed a wider range of petroleum hydrocarbon and had a stronger oil removal capacity. It provides a new method for the green and efficient separation of oily sludge.
从含油污泥中分离油成分是土壤修复和能源回收的重要组成部分。因此，建立绿色高效的分离技术具有重要意义。本研究采用木质素磺酸钠（SL）处理分离含油污泥。研究了温度、SL浓度、转速、时间和pH值对除油率的影响。最佳条件如下：温度30℃；SL浓度2.0 g·L；转速200 rpm；时间60 min；pH值11。最大除油率为83.21%。分析了含油污泥的理化性质。土壤变得更疏松，土壤表面的接触角（55°）减小。烷烃、醛、酮、碳酸、苯环和脂环醚被去除。结果表明，SL处理去除的石油烃范围更广，除油能力更强。它为含油污泥的绿色高效分离提供了一种新方法。
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