Aged acidic biochar increases nitrogen retention and decreases ammonia volatilization in alkaline bauxite residue sand

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• 作者：M. Esfandbod^a ; I.R. Phillips^b ; B. Miller^a ; M. Rezaei Rashti^a ; Z.M. Lan^a ; P. Srivastava^c ; B. Singh^d ; C.R. Chen^a ; ^{c.chen@griffith.edu.au}
• 关键词：Acid aged biochar ; Ammonia volatilization ; Adsorption ; Bauxite residue sand ; FTIR spectroscopy
• 刊名：Ecological Engineering
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：98
• 期：Complete
• 页码：157-165
• 全文大小：904 K
• 卷排序：98

文摘

Nitrogen (N) use efficiency and retention are low in bauxite residue sand (BRS). Acidic and alkaline biochars were tested for their capacity of retaining N. Aged acidic biochars can adsorb much more NH4+-N than other biochars in BRS. Acidic biochar had a larger amount of oxygen-containing functionalities. Acidic biochar can be used as an effective amendment for rehabilitation of BRS.