化工进展 ›› 2024, Vol. 43 ›› Issue (3): 1584-1592.DOI: 10.16085/j.issn.1000-6613.2023-0429

• 资源与环境化工 • 上一篇    

木头基纤维素/石墨烯分离膜制备及污染物分离性能

陈林林1(), 于飞2, 马杰1,3()   

  1. 1.同济大学环境科学与工程学院,上海 200092
    2.上海海洋大学海洋生态与环境学院,上海 201306
    3.喀什大学土木工程学院,新疆 喀什 844000
  • 收稿日期:2023-03-21 修回日期:2023-11-16 出版日期:2024-03-10 发布日期:2024-04-11
  • 通讯作者: 马杰
  • 作者简介:陈林林(1999—),女,硕士研究生,研究方向为环境功能材料。E-mail:Cll@tongji.edu
  • 基金资助:
    国家自然科学基金(22276137)

Preparation of wood-based cellulose/graphene separation membrane and pollutant separation performance

CHEN Linlin1(), YU Fei2, Ma JIE1,3()   

  1. 1.School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
    2.School of Marine Ecology and Environment, Shanghai Ocean University, Shanghai 201306, China
    3.School of Civil Engineering, Kashgar University, Kashgar 844000, Xinjiang, China
  • Received:2023-03-21 Revised:2023-11-16 Online:2024-03-10 Published:2024-04-11
  • Contact: Ma JIE

摘要:

利用酸性亚氯酸钠和氢氧化钠溶液,脱除巴沙木中木质素和半纤维素,制得纤维素薄膜,研究该薄膜微观结构、元素分布与组成、浸润性等方面性能。结果表明,经化学法剥离后的纤维素吸附剂对染料亚甲基蓝的吸附容量可达120.0mg/g,与Langmuir和Temkin模型均能较好地符合。随着膜孔径的收缩和氧化石墨烯(GO)的负载,纤维素膜对抗生素的截留性能大大增强。在0.3MPa通液压力下,纤维素/GO膜的纯水通量提高至原通量的13.5倍[由56.5L/(m2·h)到764.1L/(m2·h)];纤维素/GO膜对环丙沙星的截留率可达65.6%(纤维素膜对环丙沙星截留率为50.9%)。

关键词: 膜过滤, 氧化石墨烯, 纤维素膜, 吸附

Abstract:

The cellulose film was produced by using acidic sodium chlorite and sodium hydroxide solution to remove lignin and hemicellulose from balsa wood. The performance studies on microstructure, element distribution and composition, and wettability of this film were carried out, and the results showed that the adsorption capacity of the cellulose adsorbent after chemical stripping could reach 120.0mg/g for the dye methylene blue, which was in good agreement with both Langmuir and Temkin models. With the shrinkage of membrane pore size and the loading of graphene oxide (GO), the retention performance of the cellulose membrane for antibiotics was greatly enhanced. The pure water flux of the cellulose/GO membrane was increased to 13.5 times of the original flux [from 56.5L/(m2·h) to 764.1L/(m2·h)] at 0.3MPa flux pressure. The retention rate of ciprofloxacin by the cellulose/GO membrane was up to 65.6% (50.9% for ciprofloxacin by cellulose membrane). The related research work provided a new idea for the preparation and application of polysaccharide membranes.

Key words: membrane filtration, graphene oxide (GO), cellulose membrane, adsorption

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