CAJ | 학술논문

为实现废弃秸秆资源化利用和应对染料废水污染问题，以水稻秸秆（RS）为原料，与十四烷基三甲基氯化铵（TTAC）反应制备阳离子改性秸秆（MRS）。首先考察了改性工艺对MRS脱色性能的影响，进而通过扫描电镜（SEM）和红外光谱（FT-IR）分析潜在的作用机制。结果表明，制备MRS的适宜工艺条件为：RS：TTAC质量比为1：2、搅拌速率为400 r·min-1、温度为40℃、pH为7.00。与RS相比，MRS呈均匀有序的片状且存在较多缝隙，增加了其和染料的接触面积，有利于提高吸附性能。FT-IR表明，改性处理将RS中大部分木质素和半纤维素脱除，并引入-NH+，加强了MRS与阴离子污染物的电荷中和作用。
위실현폐기갈간자원화이용화응대염료폐수오염문제，이수도갈간（RS）위원료，여십사완기삼갑기록화안（TTAC）반응제비양리자개성갈간（MRS）。수선고찰료개성공예대MRS탈색성능적영향，진이통과소묘전경（SEM）화홍외광보（FT-IR）분석잠재적작용궤제。결과표명，제비MRS적괄의공예조건위：RS：TTAC질량비위1：2、교반속솔위400 r·min-1、온도위40℃、pH위7.00。여RS상비，MRS정균균유서적편상차존재교다봉극，증가료기화염료적접촉면적，유리우제고흡부성능。FT-IR표명，개성처리장RS중대부분목질소화반섬유소탈제，병인입-NH+，가강료MRS여음리자오염물적전하중화작용。
In recent years there has been an increasing interest in the use of crop residues for wastewater treatments. Here a new cationic adsorbent(MRS), was obtained from rice straw(RS)by modification with fourteen alkyl trimethyl ammonium chloride(TTAC), and was then examined its performance in decolorizing dye wastewater with batch experiments. The potential adsorption and decolorization mecha-nism of MRS were also investigated through SEM and FT-IR. Results indicated that the appropriate modification conditions were as follows:mass ratio(RS:TTAC)of 1:2, stirring rate of 400 r·min-1, temperature of 40℃, and pH=7.00. Compared with RS, MRS had an even and or-derly structure with more empty gaps, leading to a greater contact area and thus improving adsorption performance of MRS. FT-IR proved that TTAC modification had removed most of the hemicelluloses and lignin from RS, and successfully introduced the-NH+group in MRS, enhancing adsorption of anionic pollutants by MRS.