期刊
JOURNAL OF HEALTH SCIENCE
卷 54, 期 6, 页码 623-628出版社
PHARMACEUTICAL SOC JAPAN
DOI: 10.1248/jhs.54.623
关键词
removal; methylene blue; monosodium glutamate; functionalization; sawdust
类别
资金
- Key Project of Natural Science Foundation
- Anhui Education Bureau, the Key Laboratory of Bioresource Protection and Utilization of Anhui Province
In order to enhance its cationic sorption capacity, waste sawdust was functionalized by monosodium glutamate (MG) to produce potentially biodegradable cationic sorbent. The crude sawdust (CS) and functionalized sawdust (FS) were compared for the sorption behaviors against methylene blue (MB) in a batch system. The effects of various experimental parameters (e.g. initial pH, sorbent dose, dye concentration, contact time, and temperature etc.) were investigated and the sorption kinetic and thermodynamic characteristics were elucidated. The MB removal ratio oil CS and oil FS increased as the initial pH increased, and reached to the maximum value beyond pH 5 and pH 6 for FS and CS, respectively. For 250 mg/l of MB solution, a removal ratio of greater than 95% could be achieved with 2.0g/l or more of FS. The MB removal percentage decreased more significantly oil CS than oil FS with increasing initial MB concentration. The isothermal data of MB sorbed on CS and oil FS followed the Langmuir model and the sorption capacities (Q(m)) of CS and FS for MB were 87.7 and 188.7 mg/g, respectively. The MB removal on FS and on CS reached to the equilibrium at about 10 and 36 hr, respectively. The MB sorption processes on FS and CS followed the pseudo-first-order rate kinetics. The sorptions of MB on CS and on FS were spontaneous and exothermic processes, and lower temperatures were favorable for the sorption processes.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据