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Mechanism and Characteristics of Oil Recovery from Oily Sludge by Sodium Lignosulfonate Treatment
ACS Omega ( IF 3.7 ) Pub Date : 2021-09-22 , DOI: 10.1021/acsomega.1c04369
Yun Ma 1 , Mingzhu Yao 1 , Lu Liu 1 , Chengrong Qin 1 , Baicheng Qin 1 , Ningkang Deng 1 , Chen Liang 1 , Shuangquan Yao 1
Affiliation  

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–1; 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.

中文翻译:


木质素磺酸钠处理含油污泥采油机理及特点



从含油污泥中分离油组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。在这项研究中,使用木质素磺酸钠(SL)处理来分离含油污泥。研究了温度、SL浓度、转速、时间和pH值对除油率的影响。最佳条件为:温度30℃; SL浓度,2.0 g·L –1 ;转速,200转/分钟;时间,60分钟; pH值为11。最大除油率为83.21%。对含油污泥的理化性质进行了分析。土壤变得更加疏松,土壤表面的接触角(55°)减小。除去烷烃、醛、酮、碳酸、苯环、脂环醚。结果表明,SL处理去除的石油烃范围更广,除油能力更强。为含油污泥的绿色高效分离提供了新方法。
更新日期:2021-10-06
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