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دانلود رایکان مقاله انگلیسی ISI با موضوع پتانسیل کاتالیستی Cu / Mg / Al-chitosan برای اوزون زنی شیرابه در محل دفن زباله

عنوان فارسی مقاله:

پتانسیل کاتالیستی Cu / Mg / Al-chitosan برای اوزون زنی شیرابه در محل دفن زباله

عنوان انگلیسی مقاله:

Catalytic potential of Cu/Mg/Al-chitosan for ozonation of real landfill leachate

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1. Introduction
 Landfill leachates contain large recalcitrant organic molecules, heavy metals, and toxic components, with high chemical oxygen demand (COD) and ammonium content, and low carbon-to-nitrogen ratios (Eldyasti et al., 2012; Venu et al., 2014; Zhang et al., 2014). To minimize the risks of contamination and ensure the safety of receiving media, leachate must be appropriately treated. Biological treatments are very effective for young leachate (<2 years) owing to high BOD5/COD values (>0.3). However, the major organic fraction in a leachate becomes refractory with increasing landfill age as it cannot be readily removed by biological treatments (Renou et al., 2008). Advanced oxidation processes (AOPs) are innovative technologies, suitable for the reduction of organic load or toxicity, that enhance biotreatability of sanitary land- fill leachate by oxidizing refractory organic compounds into harmless substances, leading to mineralization end-products such as CO2 and H2O (Chidambara Raj and Li Quen, 2005; Karci, 2014; Manenti et al., 2014). Therefore, several countries have started to apply AOPs to treat landfill leachate directly or indirectly (Wu et al., 2010; Zhiyong et al., 2006).

1. مقدمه