Facile synthesis of magnetic sludge-based carbons by using Electro-Fenton activation and its performance in dye degradation
| Autor: | Hong Tao, Pin Zhou, Nanwen Zhu, Haifeng Wen, Daofang Zhang, Lin Gu, Chengxu Li |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Flocculation
Environmental Engineering Iron Nanoparticle Bioengineering 02 engineering and technology 010501 environmental sciences 01 natural sciences Catalysis Nanomaterials Water Purification chemistry.chemical_compound Methyl orange Coloring Agents Waste Management and Disposal 0105 earth and related environmental sciences Waste management Sewage Renewable Energy Sustainability and the Environment General Medicine 021001 nanoscience & nanotechnology Carbon chemistry Chemical engineering Charcoal Leaching (metallurgy) 0210 nano-technology Pyrolysis Sludge |
| Zdroj: | Bioresource technology. 241 |
| ISSN: | 1873-2976 |
| Popis: | Highly stable iron based magnetic carbon were prepared by sequential Electro-Fenton (EF) activation and pyrolysis of sewage sludge. The applied voltage exerts great influence on EF treated sludge flocs and thus poses significant effect on physiochemical properties of the as-prepared carbons. High insertion rate of iron into sludge from EF activation resulted in carbons with highly dispersed iron oxides, which had average size of iron nanoparticles being 4.77nm. The carbon also presented well developed porosity which had Brunauer-Emmett-Teller (BET) surface area attaining 341m2/g. Carbons prepared by traditional Iron Impregnation (IM) were used as comparison to gain further insight into their catalytic role as Fenton-like catalyst. Results showed that EF-activated sludge carbon could yield 96.1% of Methyl Orange (MO) removal in 60min together with only 1.4% of iron leaching. After three cycles, the MO removal can still reach 80% with EF-activated carbons. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect