Iron-loaded mangosteen as a heterogeneous Fenton catalyst for the treatment of landfill leachate

被引：62

作者：

Laiju, A. R. ^{[1
]}

Sivasankar, T. ^{[2
]}

Nidheesh, P. V. ^{[1
]}

机构：

[1] Natl Inst Technol, Dept Civil Engn, Tiruchirappalli 620015, Tamil Nadu, India

[2] Natl Inst Technol, Dept Chem Engn, Tiruchirappalli 620015, Tamil Nadu, India

来源：

ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH | 2014年 / 21卷 / 18期

关键词：

Fenton; Heterogeneous catalyst; Mangosteen; Leachate; COD; ADVANCED OXIDATION; AQUEOUS-SOLUTION; RHODAMINE-B; DEGRADATION; REMOVAL; ADSORPTION; ACID;

D O I：

10.1007/s11356-014-2883-y

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Iron-loaded mangosteen shell powder (Fe-MSP) was found as an effective heterogeneous Fenton catalyst for the treatment of stabilized landfill leachate. Sonolytically produced catalyst has higher efficiency than other catalysts. At the optimal conditions (pH 3, catalyst concentration of 1,750 mg/L and hydrogen peroxide concentration of 0.26 M), 81 % of the chemical oxygen demand (COD) was removed effectively from the landfill leachate. But, the efficiency of Fe-MSP was reduced in the first recycling due to the poisoning of active sites. A metal leaching study indicated that the degradation of the pollutant is mainly due to solid Fe ions present in Fe-MSP rather than the leached ferrous and ferric ions. Hydroxyl radical production in the system was confirmed by the Fenton oxidation of benzoic acid. Compared to the homogeneous Fenton process, the heterogeneous Fenton process using Fe-MSP had higher COD removal efficiency, indicating the practical applicability of the prepared catalyst.

引用

页码：10900 / 10907

页数：8

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