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Heterogeneous Fenton-like Catalyst for Treatment of Rhamnolipid-Solubilized Hexadecane Wastewater

Heterogeneous Fenton-like Catalyst for Treatment of Rhamnolipid-Solubilized Hexadecane Wastewater

Yang Liu, Min Cheng, Zhifeng Liu, Guangming Zeng, Hua Zhong, Ming Chen, Chengyun Zhou, Weiping Xiong, Binbin Shao, Biao Song

Chemosphere. 2019 Dec;236:124387.

PMID: 31336240

Abstract:

The treatment of wastewater containing hydrophobic organic pollutants solubilized by surfactants is of great environmental importance. In this work, the removal of rhamnolipid-solubilized hexadecane via a salicylic acid-methanol-acetone modified steel converter slag (SMA-SCS) catalyzed Fenton-like process was studied. First, we investigated the adsorption of rhamnolipid and hexadecane onto SCS and SMA-modified SCS. Compared to that of SCS, SMA-SCS exhibited better adsorption performance with maximum adsorption capacities of 0.23 and 0.28 mg/g for hexadecane and rhamnolipid, respectively. Degradation experiments showed that hexadecane was more readily degraded by the Fenton-like process than rhamnolipid. Up to 81.1% of hexadecane removal was achieved over 20 g/L of SMA-SCS within 24 h, whereas only 36% of rhamnolipid was degraded. On the other hand, the results indicated that increased rhamnolipid concentration had a negative effect on the degradation of hexadecane. During the oxidation reaction, the pH value of solution remained between 6.0 and 6.72. All these results demonstrated that the SMA-SCS/H2O2 Fenton-like process could be a cost-effective and promising approach for the treatment of surfactant-solubilized hydrophobic organic compounds.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP544763	Hexadecane		544-76-3	Price

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