A separation-free polyacrylamide/bentonite/graphitic carbon nitride hydrogel with excellent performance in water treatment
Author(s)
Hao, Qiang
Chen, Tong
Wang, Ruiting
Feng, Jianrui
Chen, Daimei
Yao, Wenqing
Griffith University Author(s)
Year published
2018
Metadata
Show full item recordAbstract
3D-hydrogels have broad potential for wastewater treatment, for they are separation-free and have excellent adsorption capacity. However, the process of adsorption is only the enrichment of pollutants rather than elimination. Development of 3D-hydrogel/photocatalyst composite materials is a promising strategy for achieving the enrichment and mineralization of organic pollutants. This paper describes a facile and environmentally friendly synthesis of separation-free polyacrylamide/bentonite/graphitic carbon nitride 3D-hydrogel. When the mass of graphitic carbon nitride is 1/10 of acrylamide, the composite hydrogel displays ...
View more >3D-hydrogels have broad potential for wastewater treatment, for they are separation-free and have excellent adsorption capacity. However, the process of adsorption is only the enrichment of pollutants rather than elimination. Development of 3D-hydrogel/photocatalyst composite materials is a promising strategy for achieving the enrichment and mineralization of organic pollutants. This paper describes a facile and environmentally friendly synthesis of separation-free polyacrylamide/bentonite/graphitic carbon nitride 3D-hydrogel. When the mass of graphitic carbon nitride is 1/10 of acrylamide, the composite hydrogel displays excellent removal of tetracycline in both static and flowing state. The total removal efficiency is higher than that of adsorption or degradation. The enhanced removal of organic pollutants is attributed to the synergistic effect of adsorption and photocatalytic degradation, the enhanced light absorption and the accelerated separation of photogenerated charge carriers. More importantly, it has excellent stability and can be easily separated from water and reused. This 3D-hydrogel/photocatalyst composite materials has broad application potential to the elimination of organic pollutants in water.
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View more >3D-hydrogels have broad potential for wastewater treatment, for they are separation-free and have excellent adsorption capacity. However, the process of adsorption is only the enrichment of pollutants rather than elimination. Development of 3D-hydrogel/photocatalyst composite materials is a promising strategy for achieving the enrichment and mineralization of organic pollutants. This paper describes a facile and environmentally friendly synthesis of separation-free polyacrylamide/bentonite/graphitic carbon nitride 3D-hydrogel. When the mass of graphitic carbon nitride is 1/10 of acrylamide, the composite hydrogel displays excellent removal of tetracycline in both static and flowing state. The total removal efficiency is higher than that of adsorption or degradation. The enhanced removal of organic pollutants is attributed to the synergistic effect of adsorption and photocatalytic degradation, the enhanced light absorption and the accelerated separation of photogenerated charge carriers. More importantly, it has excellent stability and can be easily separated from water and reused. This 3D-hydrogel/photocatalyst composite materials has broad application potential to the elimination of organic pollutants in water.
View less >
Journal Title
Journal of Cleaner Production
Volume
197
Subject
Environmental engineering
Manufacturing engineering
Science & Technology
Life Sciences & Biomedicine
Green & Sustainable Science & Technology
Engineering, Environmental