CAJ | 학술논문

以木屑、小麦秸秆和玉米秸秆为原料，采用水热法制备生物炭，研究不同生物质水热生物炭特性，分析了水热生物炭的产率、元素组成、表面特性、多环芳烃含量及表面官能团的变化。结果表明：以木屑为原料制备的水热生物炭产率最高（54.66%），C含量（52.59%）较水热小麦和玉米秸秆生物炭（分别为43.73%和43.93%）高，但O含量（41.56%）明显低于水热小麦和玉米秸秆生物炭（分别为49.94%和50.95%）。扫描电镜显示水热木屑生物炭表面光滑，孔状结构较多且排列整齐，水热小麦生物炭表面粗糙孔隙较少，而水热玉米生物炭孔隙结构不明显。傅里叶红外光谱分析显示原料经水热炭化后官能团种类差异不大，但相对含量发生了变化：水热小麦和玉米秸秆生物炭有机官能团含量相对增加，而无机矿物（如SiO2）含量略有减少；水热木屑生物炭有机官能团和无机矿物的含量均明显增加。采用气质联用仪（GC-MS）分析水热生物炭多环芳烃含量，结果表明三种水热生物炭总多环芳烃含量依次为水热小麦秸秆生物炭跃水热木屑生物炭跃水热玉米秸秆生物炭，并以菲和萘为主。
이목설、소맥갈간화옥미갈간위원료，채용수열법제비생물탄，연구불동생물질수열생물탄특성，분석료수열생물탄적산솔、원소조성、표면특성、다배방경함량급표면관능단적변화。결과표명：이목설위원료제비적수열생물탄산솔최고（54.66%），C함량（52.59%）교수열소맥화옥미갈간생물탄（분별위43.73%화43.93%）고，단O함량（41.56%）명현저우수열소맥화옥미갈간생물탄（분별위49.94%화50.95%）。소묘전경현시수열목설생물탄표면광활，공상결구교다차배렬정제，수열소맥생물탄표면조조공극교소，이수열옥미생물탄공극결구불명현。부리협홍외광보분석현시원료경수열탄화후관능단충류차이불대，단상대함량발생료변화：수열소맥화옥미갈간생물탄유궤관능단함량상대증가，이무궤광물（여SiO2）함량략유감소；수열목설생물탄유궤관능단화무궤광물적함량균명현증가。채용기질련용의（GC-MS）분석수열생물탄다배방경함량，결과표명삼충수열생물탄총다배방경함량의차위수열소맥갈간생물탄약수열목설생물탄약수열옥미갈간생물탄，병이비화내위주。
Hydrothermal carbonization is a thermochemical process converting biomass into a coal-like material called hydrochar under biomass/water suspension conditions. Three hydrochars were prepared by hydrothermal carbonization(HTC)from three different feedstock sources of sawdust(SD), wheat straw(WS)and corn stalk(CS). Their characteristics including outputs, elemental contents, surface proper-ties, PAHs concentrations and surface functional groups were investigated. Results showed that hydrochar from SD(H-SD)had the highest outputs(54.66%), and C content(52.59%), while O content was the lowest(41.56%). The SEM results showed that H-SD had smooth sur-face and neatly-arranged porous structure, whereas WS hydrochar(H-WS)was platy particles with rough surface while CS hydrochar(H-CS)did not have obvious pore structure. Hydrothermal carbonization did not change the types of functional groups but increased the con-tents of organic functional groups while decreased mineral components(such as SiO2)in H-WS. However, both organic functional groups and mineral components significantly increased in H-SD. The PAHs concentrations of hydrochars were in order:H-WS>H-SD>H-CS, with phenanthrene and naphthalene being major components.