Details

Autor(en) / Beteiligte

• He, Xiao-Song
• Xi, Bei-Dou
• Zhang, Zong-Yong
• Gao, Ru-Tai
• Tan, Wen-Bing
• Cui, Dong-Yu
• Yuan, Ying

Titel

Composition, removal, redox, and metal complexation properties of dissolved organic nitrogen in composting leachates

Ist Teil von

• Journal of hazardous materials, 2015, Vol.283, p.227-233

Ort / Verlag

Netherlands: Elsevier B.V

Erscheinungsjahr

2015

Quelle

MEDLINE

Beschreibungen/Notizen

• •The removal, redox, and complexation properties of the leachate DON were studied.•Amines and neutral amino acids showed the most resistant against removal.•The DON was not the main contributor to the redox ability of the leachate organics.•The amines formed complexes with the metals Mo, Co, Cr, and Ni.•While the proteinaceous compounds interacted only with the metals Cr and Ni. This study investigated the composition, removal, redox, and metal complexation characteristics of dissolved organic nitrogen (DON) in composting leachates. Results showed that the leachate-derived DON comprised proteinaceous compounds and amines, and most of them were integrated into the fulvic- and humic-like substances. Neutral, basic, acidic, hydroxylic, aromatic, and sulfuric amino acids all were detected in the influent leachates. However, most of them were removed by the biological and physical processes, and only neutral amino acids were detected in the effluent. The DON was not the main contributor to the redox capability of the leachate dissolved organic matter (DOM). However, it exhibited a strong capability for metal complexation. The amines formed strong complexes with the metals Mo, Co, Cr, and Ni, while the proteinaceous matter interacted with the metals Cr and Ni.