Abstract：
:Xanthan integrated graphene oxide functionalized by titanium dioxide was successfully prepared through facile, eco-friendly and cost effective ice-templating technique. The three-dimensional (3D) graphene composite demonstrated relatively high temperature stability, chemical functionalities and porous sponge-like structure. The adsorption of lead was favored by high initial concentration and shaking speed at the operational solution pH. The process equilibrium and kinetic adhered to the Langmuir and pseudo-second-order correlations, respectively. The biomass integrated graphene composite showed maximum adsorption capacities ranging from 132.18 to 199.22 mg/g for 30-70 °C. Moreover, it was highly regenerable under mild conditions (0.1 M hydrochloric acid, 30 °C) and used repeatedly while retaining 84.78% of its initial adsorption capacity at the fifth adsorption-regeneration cycle. With comparatively high lead adsorption capacities, adequate recyclability and environmentally friendliness, the as-prepared 3D graphene composite has high application potential in heavy metal-wastewater separation for protection of the environment and human health.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Lai KC,Lee LY,Hiew BYZ,Thangalazhy-Gopakumar S,Gan Sdoi
10.1016/j.biortech.2020.123296subject
Has Abstractpub_date
2020-08-01 00:00:00pages
123296eissn
0960-8524issn
1873-2976pii
S0960-8524(20)30568-Xjournal_volume
309pub_type
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