Adsorption of heavy metal sewage on nano-materials such as titanate/TiO2 added lignin

Fu, Yuan; Liu, Xin; Chen, Guanyi

doi:10.1016/j.rinp.2018.11.084

Cited by 48 publications

(15 citation statements)

References 13 publications

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“…The removal rates of Pb(II) and Co(III) were 100 %, and 98 %, respectively, when the adsorption reached equilibrium. It can therefore be seen that CaCO 3 /HPC composite can remove heavy metal ions completely in a short time [42].…”

Section: Resultsmentioning

confidence: 88%

Synthesis and applications of CaCO3/HPC core–shell composite subject to heavy metals adsorption processes

Fathy

Zayed

Moustafa

2019

Heliyon

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Core-shell particles are a class of materials from nanostructures that have received increased attention recently due to their interesting properties and wide range of applications in catalysis, biology, chemistry of materials and sensors. Simple and cost-effective one-pot synthesis route to directly prepare CaCO 3 @highly porous carbon microsphere in a core–shell structure (denoted as CaCO 3 /HPC) had been developed as a high-performance heavy metals sorbent. XRD (X-Ray Diffraction), SEM (scanning electron microscopy), Raman, FTIR (Fourier Transform Infrared Spectroscopy) and BET tools were used in structure characterization of the products. The adsorption properties of the products obtained were studied. From this study the adsorption performances of CaCO 3 /HPCwere found to be optimal by comparing the maximum adsorption capacity of heavy metal ions (Pb (II) and Co(III)) with CaCO 3 /HPC.The adsorption of CaCO 3 /HPCtest to Pb(II) and Co(III), in particular Pb(II) had a good effect over a wide pH range (pH 2–7). The maximum adsorption capacitiesof CaCO 3 /HPC for Pb (II) and Co(III) were 677.6 mg/g, and 308.5 mg/g, respectively, at pH = 6 (lead ion was 5.5) and 25 °C, and the adsorption rate was fast. The lead ions can be adsorbed almost entirely in 5 minutes and only 0.2 g/L was the best effective doseof adsorbent. The prepared and carefully testednanocomposites had been found to be of excellent performances in adsorption and in analytical regeneration. The adsorption processof Pb(II) and Co(III) through core shell of the preparednanocomposite adsorbent was found to be a second-order chemical adsorption and fit for Langmuir and Freundlich isotherms, in the form of amonomolecular and multi-layer heavy metal adsorptionprocesses. The (CaCO 3 /HPC)-based sorbents (with and without) pelletization shows superior heavy metals adsorption performances compared to a CaCO 3 -based sorbent.

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Section: Resultsmentioning

confidence: 88%

Synthesis and applications of CaCO3/HPC core–shell composite subject to heavy metals adsorption processes

Fathy

Zayed

Moustafa

2019

Heliyon

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“…Adsorbents based on magnetite nanoparticles and other iron oxides are combined with each other [ 29 ] and with other components such as, for example, carbon fibers [ 30 ], titanium dioxide [ 31 ] and with the creation of hybrid materials with a larger specific surface area and adsorption capacity in relation to As (V) ions.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Magnetic Nanomaterials with Adsorptive Properties of Arsenic Ions

Wojciechowska

Lendzion-Bieluń

2020

Molecules

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A new synthesis method of hybrid Fe3O4/C/TiO2 structures was developed using microwave-assisted coprecipitation. The aim of the study was to examine the effect of the addition of glucose and titanium dioxide on adsorptive properties enabling removal of arsenic ions from the solution. The study involved the synthesis of pure magnetite, magnetite modified with glucose and magnetite modified with glucose and titanium dioxide in magnetite: glucose: titanium dioxide molar ratio 1:0.2:3. Materials were characterized by XRD, FT-IR, and BET methods. Magnetite and titanium dioxide nanoparticles were below 20 nm in size in obtained structures. The specific surface area of pure magnetite was approximately 79 m2/g while that of magnetite modified with titanium dioxide was above 190 m2/g. Obtained materials were examined as adsorbents used for removal As(V) ions from aqueous solutions. Adsorption of arsenic ions by pure magnetite and magnetite modified with titanium dioxide was very high, above 90% (initial concentration 10 mg/L), pH in the range from 2 to 7. The preparation of magnetic adsorbents with a high adsorption capacity of As(V) ions was developed (in the range from 19.34 to 11.83 mg/g). Magnetic properties enable the easy separation of an adsorbent from a solution, following adsorption.

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“…Since the chemical nature of the surface defines the type of interaction with an adsorbate, [38] variations in the source and properties of lignin influence the adsorption process. [39] Table 1 summarizes adsorption capacities of lignin-inorganic composites to organic molecules and metal ions. Although a direct comparison of adsorption capacity is not always possible because of the different pH values and temperatures used, some trends are apparent.…”

Section: Adsorbentsmentioning

confidence: 99%

“…Several strategies have been used to synthesize lignin–inorganic composites: sol–gel method, adsorption with modified or unmodified lignin, co‐precipitation, and so forth. Since the chemical nature of the surface defines the type of interaction with an adsorbate, variations in the source and properties of lignin influence the adsorption process . Table summarizes adsorption capacities of lignin–inorganic composites to organic molecules and metal ions.…”

Section: Materials and Applicationsmentioning

confidence: 99%

Lignin–Inorganic Interfaces: Chemistry and Applications from Adsorbents to Catalysts and Energy Storage Materials

2020

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Lignin is one the most fascinating natural polymers due to its complex aromatic‐aliphatic structure. Phenolic hydroxyl and carboxyl groups along with other functional groups provide technical lignins with reactivity and amphiphilic character. Many different lignins have been used as functional agents to facilitate the synthesis and stabilization of inorganic materials. Herein, the use of lignin in the synthesis and chemistry of inorganic materials in selected applications with relevance to sustainable energy and environmental fields is reviewed. In essence, the combination of lignin and inorganic materials creates an interface between soft and hard materials. In many cases it is either this interface or the external lignin surface that provides functionality to the hybrid and composite materials. This Minireview closes with an overview on future directions for this research field that bridges inorganic and lignin materials for a more sustainable future.

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Adsorption of heavy metal sewage on nano-materials such as titanate/TiO2 added lignin

Cited by 48 publications

References 13 publications

Synthesis and applications of CaCO3/HPC core–shell composite subject to heavy metals adsorption processes

Synthesis and applications of CaCO3/HPC core–shell composite subject to heavy metals adsorption processes

Synthesis and Characterization of Magnetic Nanomaterials with Adsorptive Properties of Arsenic Ions

Lignin–Inorganic Interfaces: Chemistry and Applications from Adsorbents to Catalysts and Energy Storage Materials

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