Properties and mechanism of Cr(VI) removal by a ZnCl2-modified sugarcane bagasse biochar–supported nanoscale iron sulfide composite

Jiang, Chunlu; Zhou, Shijia; Li, Chang; Yue, Fengdie; Zheng, Liugen

doi:10.1007/s11356-022-24126-x

Cited by 5 publications

(3 citation statements)

References 54 publications

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“…Yap et al reported that the model described by Langmuir was more appropriate for explaining the adsorption of Cd 2+ and Pb 2+ by a novel magnetic biochar with a distinguishable behavior, which was successfully synthesized by microwave technology using discarded coconut shells [17]. Recently, Jiang's group found that the saturated Cr (VI) adsorption capacity of biochar composites obtained by ZnCl 2 modification combined with FeS loading was as high as 264.03 mg•g −1 , and its activity of adsorption was in accordance with pseudo-second-order and Redlich-Peterson isotherm models [18].…”

Section: Introductionmentioning

confidence: 89%

Enhancing Cr (VI) Adsorption of Chestnut Shell Biochar through H3PO4 Activation and Nickel Doping

Hu,

Zhang,

Chen

et al. 2024

Molecules

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A high-efficiency nickel-doped porous biochar (PCNi3) has been successfully synthesized from chestnut shell waste via a two-step chemical activation treatment with H3PO4. The influences of microstructure, surface morphology, elemental composition, surface functional groups, specific surface area, porosity, pore-size distribution, and chemical properties of the surface state on the removal of Cr (VI) from water were thoroughly investigated by using XRD, FESEM, FTIR, Raman, BET, and XPS testing methods, N2 adsorption, and XPS testing techniques respectively. The results indicate that the treatment of H3PO4 activation and nickel doping can effectively improve microstructure characteristics, thus promoting Cr (VI) adsorption capacity. The effects of initial solution pH, solution concentration, time, and temperature on remediation are revealed. The Cr (VI) uptake experiments imply that the adsorption curves of PCNi3 fit well with the Freundlich model, the pseudo-second-order kinetic model, and the Elovich model. The adsorption process of PCNi3 can be regarded as a spontaneous endothermic reaction limited by diffusion among particles and porosity. The adsorption mechanisms of PCNi3 are ion exchange, complexation, electrostatic adsorption, and coprecipitation with the assistance of surface active sites, porosity, Ni0 particles, and Ni7P3. With these advantages, PCNi3 reveals an extraordinary Cr (VI) removal capacity and a strong ability to reduce Cr (VI) to Cr (III).

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Section: Introductionmentioning

confidence: 89%

Enhancing Cr (VI) Adsorption of Chestnut Shell Biochar through H3PO4 Activation and Nickel Doping

Hu,

Zhang,

Chen

et al. 2024

Molecules

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“…In the case of composites containing elastomer, PP-25G-E and PP-25G-C-E, a slight shift of these peaks to the left is observed, proof of the interaction between PP and the ethylene-propylene blocks in the elastomer. New FTIR bands at 1578 and 1541 cm −1 were observed in Figure 2 for PP-25G-C and at 1570 and 1543 cm −1 for PP-25G-C-E, being specific to the addition of the treated ash additive, more specifically from the dispersion agent used for the fly ash surface treatment [12], and can be associated with the -COO − antisymmetric stretching vibration group [37][38][39].…”

Section: Ftir Analysismentioning

confidence: 97%

The Effect of Thermoplastic Elastomer and Fly Ash on the Properties of Polypropylene Composites with Long Glass Fibers

Teodorescu,

Vuluga,

Ion

et al. 2024

Polymers

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A cost-effective solution to the problems that the automotive industry is facing nowadays regarding regulations on emissions and fuel efficiency is to achieve weight reduction of automobile parts. Glass fiber-reinforced polymers are regularly used to manufacture various components, and some parts may also contain thermoplastic elastomers for toughness improvement. This work aimed to investigate the effect of styrene-(ethylene-co-butylene)-styrene triblock copolymer (E) and treated fly ash (C) on the morphological, thermal, and mechanical properties of long glass fiber (G)-reinforced polypropylene (PP). Results showed that the composites obtained through melt processing methods presented similar thermal stability and improved (nano)mechanical properties compared to 25–30 wt.% G-reinforced PP composites (PP-25G/PP-30G). Specifically, the impact strength and surface hardness were greatly improved. The addition of 20 wt.% E led to a 25–39% increase in impact strength and surface elasticity, while the addition of 6.5 wt.% C led to a 16% increase in surface hardness. The composite based on 25 wt.% G, 6.5 wt.% C, and 20 wt.% E presented the best-balanced properties (8–17% increase in impact strength, 38–41% increase in axial strain, and 35% increase in surface hardness) compared with PP-30G/PP-25G. Structural and morphological analysis confirmed the presence of a strong interaction between the components that make the composites. Based on these results, the PP–G–E–C composites could be presented as a viable material for automotive applications.

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“…Raw sugarcane bagasse is highly efficient for treating effluents containing more than one metal ion [163]. A work by Jiang et al ( 2022) produced an iron sulfide composite with sugarcane bagasse biochar modified with zinc chloride for the adsorption of Cr 6+ ions [164]. Zhu et al ( 2021) developed three-dimensional nickel nanoparticles embedded in N 2 -doped carbon nanotubes supported on the surface of porous biochar [165].…”

Section: Heavy Metal Removal Using Sugarcane Bagassementioning

confidence: 99%

Sugarcane Bagasse: Challenges and Opportunities for Waste Recycling

Hiranobe,

Gomes,

Paiva

et al. 2024

Clean Technol.

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Sugarcane has primarily been used for sugar and ethanol production. It creates large quantities of residual lignocellulosic biomass such as sugarcane bagasse, leaves, tops, and vinasse. Biomass is a sustainable prospect for biorefineries aiming to optimize production processes. We detail recent research developments in recycling sugarcane, including energy generation and pyrolysis to obtain biofuels, for example. To produce biochar, the energy cost of operating at high temperatures and large-scale production remain as obstacles. The energy generation prospects can be enhanced by pellet production; however, it requires an improvement in quality control for long-term storage or long-distance transportation. In civil construction, the materials still need to prove their long-term efficiency and reliability. Related to adsorbent materials, the use of sugarcane bagasse has the advantage of being low-cost and environmentally friendly. Nevertheless, the extraction, functionalization, and modification of cellulose fibers, to improve their adsorption properties or even mode of operation, still challenges. The synthesis of nanostructures is still lacking high yields and the ability to scale up. Finally, controlling dispersion and orientation and avoiding fiber agglomeration could improve the mechanical response of composites using sugarcane bagasse. The different possibilities for using sugarcane and its residues reinforce the importance of this material for the industry and the global economy. Thus, the present work addresses current challenges and perspectives of different industrial processes involving sugarcane aiming to support future research on waste-derived subjects.

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Properties and mechanism of Cr(VI) removal by a ZnCl2-modified sugarcane bagasse biochar–supported nanoscale iron sulfide composite

Cited by 5 publications

References 54 publications

Enhancing Cr (VI) Adsorption of Chestnut Shell Biochar through H3PO4 Activation and Nickel Doping

Enhancing Cr (VI) Adsorption of Chestnut Shell Biochar through H3PO4 Activation and Nickel Doping

The Effect of Thermoplastic Elastomer and Fly Ash on the Properties of Polypropylene Composites with Long Glass Fibers

Sugarcane Bagasse: Challenges and Opportunities for Waste Recycling

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