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Rapid nonylphenol degradation in wastewater sludge using microwave peroxide oxidation with nitric acid
Author(s) -
Chang YuMin,
Tsai KuoSheng,
Tseng ChaoHeng,
Chen JyhHerng,
Kao ChihMing,
Lin KaeLung
Publication year - 2014
Publication title -
environmental progress and sustainable energy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.495
H-Index - 66
eISSN - 1944-7450
pISSN - 1944-7442
DOI - 10.1002/ep.12031
Subject(s) - degradation (telecommunications) , nonylphenol , hazardous waste , chemistry , nitric acid , peroxide , sewage treatment , wastewater , pulp and paper industry , waste management , environmental chemistry , environmental science , environmental engineering , inorganic chemistry , organic chemistry , computer science , telecommunications , engineering
Nonylphenol (NP) is a common endocrine disrupting compound that is hazardous to the bio‐environment. Microwave peroxide oxidation (MPO) is an energy‐efficient technology that can destroy toxic organic compounds in hazardous waste. The objective of this article is to study the rapid degradation of NP in wastewater sludge discharged from a detergent manufactory using MPO with HNO 3 . The major finding is that nearly all NP, over 95% in the sludge, can be degraded in 3 min at a temperature of 423 K using the MPO treatment. The results obtained in this work imply that MPO provides the potential to degrade NP and lower its toxicity. Significant NP degradation efficiency was achieved, showing sufficient toxic level reduction for further sludge reutilization. A useful correlation between degradation efficiency and treatment conditions is proposed based on the experimental data obtained in this study. For engineering applications, the necessary minimum treatment time is solved using a graphic illustration method, by which the minimum treatment time is obtained if the desired degradation efficiency and treatment temperature are known. The treatment time and temperature effects are also discussed in this article. © 2014 American Institute of Chemical Engineers Environ Prog, 34: 520–525, 2015