期刊
BIORESOURCE TECHNOLOGY
卷 329, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2021.124877
关键词
Biomass; Lotus root; Freeze-drying; Direct carbonization; Dye removal
资金
- National Nature Science Foundation of China [21506184]
- Hunan Province [2019JJ50597]
- Key Laboratory of Powder Metallurgy
- Hunan 2011 Collaborative Innovation Center of Chemical Engineering with Environmental Benignity and Effective Resource Utilization
Biomass, such as lotus root, was used to produce N-doped biochar with high surface area and partial mesopores for efficient removal of methyl orange. The biochar exhibited high capacity, fast kinetic adsorption, and good fitting to pseudo-second order and Langmuir models, showing promising potential for large-scale production and application in wastewater treatment.
Biomass is a promising carbon source because of its low-cost and rich carbon component. Here, lotus root as self N-source was used to produce N-doped biochar via a simple carbonization after freeze-drying, showing surface areas up to 694 m2/g with partial mesopores. Applicability of biochar as adsorbent for dyes removal was explored using methyl orange (MO) as model pollutant dye. LBC-800 sample obtained at 800 ?C had the largest capacity of 320 mg/g in 300 mg/L solution at 25 ?C with fast equilibrium time of 60 min, and pseudo-second order model expressed better for kinetics. LBC-800 also had an unprecedented maximum capacity of 449 mg/ g with superior conformity to Langmuir model. The biochar was efficient for MO removal with high capacity and fast kinetic, and significantly the sustainable feature of lotus root would allow a large-scale production of biochar as well as promising use in wastewater treatment fields.
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