期刊
MOLECULES
卷 26, 期 5, 页码 -出版社
MDPI
DOI: 10.3390/molecules26051443
关键词
hemicelluloses; hydrothermal carbonization; adsorption kinetics; heavy metal
资金
- Science and Technology Basic Resources Investigation Program of China [2019FY100900]
This study involved the preparation of two Cr(VI) adsorbents using hemicelluloses, with the HTC-NH2 showing higher adsorption capacity. The results suggest that the green hydrothermal treatment with ammonia solution offers a simple and feasible method for preparing Cr(VI) adsorbents.
It is challenging work to develop a low-cost, efficient, and environmentally friendly Cr(VI) adsorbent for waste water treatment. In this paper, we used hemicelluloses from chemical fiber factory waste as the raw material, and prepared two kinds of carbon materials by the green hydrothermal method as adsorbent for Cr(VI). The results showed that hemicelluloses hydrothermally treated with citric acid (HTC) presented spherical shapes, and hemicelluloses hydrothermally treated with ammonia solution (HTC-NH2) provided spongy structures. The adsorption capacity of the samples can be obtained by the Langmuir model, and the adsorption kinetics could be described by the pseudo-second-order model at pH 1.0. The maximum adsorption capacity of HTC-NH2 in the Langmuir model is 74.60 mg/g, much higher than that of HTC (61.25 mg/g). The green hydrothermal treatment of biomass with ammonia solution will provide a simple and feasible way to prepare adsorbent for Cr(VI) in waste water treatment.
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