439
cylindrical graphene– carbon nanotube hybrid for the efficient adsorption of organic
dye from aqua medium. The prepared hybrid exhibited a maximum adsorption
capacity of 81.97 mg g
−1
.
Abbasi synthesized a novel magnetic chitosan/SiO 2 /carbon nanotube nanocomposite and tested it for the adsorption of reactive blue 19 and direct blue 71 from
aqueous solution (Abbasi 2017).
It was found that graphene–carbon nanotube hybrid aerogels were also very
promising in removing organic dyes (Sui et al. 2012).
Hassan et al. (2018) prepared a new graphene/hydroxyapatite nanohybrid for
removing methylene blue dye from wastewater. This adsorbent exhibited an optimum adsorption capacity of ~333 mg/g.
16.8 Conclusions
This chapter investigated the issues related to dyes, their presence in the effluent and
wastewater, environmental problems, and their elimination by using hybrid adsorbents. Studies showed that the development of hybrid adsorbents is a promising
solution to the problem of dyeing in wastewater and preventing them from being
released into the environment. In the meantime, bimetals adsorbents, compound or
mixed metal oxides, layered double hydroxides, organic–inorganic materials, and
graphene oxide/carbon nanotube-incorporated adsorbents in the removal of dyes
have been investigated more than other hybrid adsorbents. The results showed that
these adsorbents exhibit a high adsorption capacity toward dyes. The only question
that needs to be answered is: Do these hybrids at large-scale production still retain
their quality and can replace the current commercial adsorbents? The current trend
of studies is that we should see significant progress in the near future.
References
Abbasi M (2017) Synthesis and characterization of magnetic nanocomposite of chitosan/SiO 2 /
carbon nanotubes and its application for dyes removal. J Clean Prod 145:105–113. https://doi.
org/10.1016/j.jclepro.2017.01.046
Abbasi AR, Azadbakht A, Morsali A, Safarifard V (2015) Synthesis and characterization of
TMU-16-NH 2 metal-organic framework nanostructure upon silk fiber: study of structure effect
on morphine and methyl orange adsorption affinity. Fibers Polymers 16:1193–1200. https://
doi.org/10.1007/s12221-015-1193-4
Abdellaoui K, Pavlovic I, Bouhent M, Benhamou A, Barriga C (2017) A comparative study of the
amaranth azo dye adsorption/desorption from aqueous solutions by layered double hydroxides.
Appl Clay Sci 143:142–150. https://doi.org/10.1016/j.clay.2017.03.019
Abdellaoui K, Pavlovic I, Barriga C (2019) Nanohybrid layered double hydroxides used
to remove several dyes from water. ChemEngineering 3:41. https://doi.org/10.3390/
chemengineering3020041
16 Hybrid Adsorbents for Dye Removal from Wastewater
cylindrical graphene– carbon nanotube hybrid for the efficient adsorption of organic
dye from aqua medium. The prepared hybrid exhibited a maximum adsorption
capacity of 81.97 mg g
−1
.
Abbasi synthesized a novel magnetic chitosan/SiO 2 /carbon nanotube nanocomposite and tested it for the adsorption of reactive blue 19 and direct blue 71 from
aqueous solution (Abbasi 2017).
It was found that graphene–carbon nanotube hybrid aerogels were also very
promising in removing organic dyes (Sui et al. 2012).
Hassan et al. (2018) prepared a new graphene/hydroxyapatite nanohybrid for
removing methylene blue dye from wastewater. This adsorbent exhibited an optimum adsorption capacity of ~333 mg/g.
16.8 Conclusions
This chapter investigated the issues related to dyes, their presence in the effluent and
wastewater, environmental problems, and their elimination by using hybrid adsorbents. Studies showed that the development of hybrid adsorbents is a promising
solution to the problem of dyeing in wastewater and preventing them from being
released into the environment. In the meantime, bimetals adsorbents, compound or
mixed metal oxides, layered double hydroxides, organic–inorganic materials, and
graphene oxide/carbon nanotube-incorporated adsorbents in the removal of dyes
have been investigated more than other hybrid adsorbents. The results showed that
these adsorbents exhibit a high adsorption capacity toward dyes. The only question
that needs to be answered is: Do these hybrids at large-scale production still retain
their quality and can replace the current commercial adsorbents? The current trend
of studies is that we should see significant progress in the near future.
References
Abbasi M (2017) Synthesis and characterization of magnetic nanocomposite of chitosan/SiO 2 /
carbon nanotubes and its application for dyes removal. J Clean Prod 145:105–113. https://doi.
org/10.1016/j.jclepro.2017.01.046
Abbasi AR, Azadbakht A, Morsali A, Safarifard V (2015) Synthesis and characterization of
TMU-16-NH 2 metal-organic framework nanostructure upon silk fiber: study of structure effect
on morphine and methyl orange adsorption affinity. Fibers Polymers 16:1193–1200. https://
doi.org/10.1007/s12221-015-1193-4
Abdellaoui K, Pavlovic I, Bouhent M, Benhamou A, Barriga C (2017) A comparative study of the
amaranth azo dye adsorption/desorption from aqueous solutions by layered double hydroxides.
Appl Clay Sci 143:142–150. https://doi.org/10.1016/j.clay.2017.03.019
Abdellaoui K, Pavlovic I, Barriga C (2019) Nanohybrid layered double hydroxides used
to remove several dyes from water. ChemEngineering 3:41. https://doi.org/10.3390/
chemengineering3020041
16 Hybrid Adsorbents for Dye Removal from Wastewater