Study on determination of carbon and hydrogen in solid biofuels by coulometric-gravimetric method
REN Xiang-jun
JIN Hong
DAI Zhao-bin
WANG Jian
KANG Ning
Abstract：Ten representative solid biomass fuel samples including wheat straw,cotton straw,rice straw,bamboo powder,sawdust,peanut shell,rice husk,maize straw,rape straw and bark were selected in this study,through the orthogonal test and the cooperative experiment of different laboratories,and diverse test conditions were selected,the precision and accuracy of carbon and hydrogen determination in solid biomass fuel by coulometric-gravimetric method were studied,and the results were compared with the current national standard GB/T 28734-2012 determination results.The studies showed that,choosing the suitable conditions such as 80ml/min oxygen flow and 6min sample entering time,weight of 0.065g and catalytic agent of anhydrous wolframic acid,and using coulometric-gravimetric method,the reliable and stable carbon and hydrogen determination results in solid biomass could be obtained.
Keywords：coulometric-gravimetric methodcarbonhydrogensolid biomass fuelorthogonal testprecisionaccuracyoxygen flowsample entering timesample weighttungsten trioxideuniformity test
Publication Date：2017-01-01
Pages：9( 29-37 )