Pyrolysis of rice straw with ammonium dihydrogen phosphate: Properties and gaseous potassium release characteristics during combustion of the products

Bioresource Technology
Hui LiChunmei Lu

Abstract

The effect of ammonium dihydrogen phosphate (NH4H2PO4) on rice straw (RS) carbonization was evaluated at temperatures of 350-650°C. The carbonized products of RS with NH4H2PO4 show higher solid and energy yields, but lower higher heating values than the carbonized RS at every carbonization temperature. The optimum carbonization operation of RS with NH4H2PO4 which has a higher energy yield at a lower solid volume may be determined between 350 and 450°C, and RS with NH4H2PO4 carbonized at 450°C presents better pore properties than carbonized RS. The carbonized products of RS with NH4H2PO4 all have lower gaseous potassium release ratios than those of RS carbonized at the same temperature at combustion temperatures of 700-1000°C by retaining potassium in non-volatile phosphorus compounds with high melting points. It is an effective method for inhibiting the gaseous potassium release during combustion of the carbonized products.

References

Sep 25, 2012·Bioresource Technology·Md Ruhul Kabir, Amit Kumar
Feb 4, 2014·Bioresource Technology·Yingquan ChenHanping Chen
Mar 18, 2015·Bioresource Technology·Wei-Hsin ChenWen-Jhy Lee

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Citations

Jun 2, 2016·Journal of Agricultural and Food Chemistry·Yanxue CaiXiaowei He

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