In-situ activated ultramicroporous carbon materials derived from waste biomass for CO2 capture and benzene adsorption

Ma, Xiancheng; Yong, Wu; Fang, Muaoer; Liu, Baogen; Chen, Ruofei; Shi, Rui; Wu, Qingding; Zeng, Zheng; Li, Liqing

doi:10.1016/j.biombioe.2022.106353

Cited by 41 publications

(9 citation statements)

References 56 publications

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“…Xianchenga et al 84 demonstrated that the addition of Zn 2+ salts to the biomass promoted the coordination of zinc to hydrochar and allowed an increase of 144% in the volume of ultra-micropores. Although the synthesis method did not involve a hydrothermal route, the process for the synthesis of HPCs from the bio-oil was carried out by dissolving ZnCl 2 in ethanol followed by adding the mixture to the bio-oil.…”

Section: Resultsmentioning

confidence: 99%

Sustainable hierarchically porous carbons from bio-oil to remove emerging contaminants

de Freitas Filho,

Oliveira,

Silva

et al. 2024

New J. Chem.

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Section: Resultsmentioning

confidence: 99%

Sustainable hierarchically porous carbons from bio-oil to remove emerging contaminants

de Freitas Filho,

Oliveira,

Silva

et al. 2024

New J. Chem.

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“…50 For applications such as the adsorption of polluting gases, the materials must have a pore size with a radius of less than 1.6−2 nm. 51 Regarding the analysis of superficial functional groups, it can be seen in Table 1 that the olive tree pruning waste (OTP) presents the highest content of oxygenated groups on its surface, and the OC has a basic character. However, the OCC and the OCP have a higher proportion of acid groups when compared to the unactivated char (OC).…”

Section: Olive Tree Pruning Wastementioning

confidence: 99%

CO₂ Capture from Porous Carbons Developed from Olive Pruning Agro-Industrial Residue

Ramos,

Mamaní,

Erans

et al. 2024

Energy Fuels

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This work studied the synthesis of activated carbons (ACs) from olive tree pruning waste since the recovery of this abundant residue for producing AC is a sustainable and environmentally friendly alternative. The physical and KOHchemical activation processes were compared and analyzed to obtain an appropriate carbon for the adsorption of CO 2 . Highly microporous carbons were obtained after KOH chemical activation that exhibit high surface area (3526 m 2 g −1 ), micropore volume (1.20 cm 3 g −1 ), and total volume (1.79 cm 3 g −1 ). The equilibrium and kinetic behavior of carbons for CO 2 adsorption were studied using Langmuir, Freundlich, and Temkin models for the isotherms and pseudo-first-order and pseudo-second-order models for the kinetics. The chemically activated carbon was found to be the most appropriate for the capture of CO 2 at low and high CO 2 pressures, showing an adsorption capacity of 5.1 mmol g −1 at 0 °C and 1 bar. The estimated isosteric heat indicates that the CO 2 adsorption process was feasible and confirms the pure physical adsorption of CO 2 . The chemically activated carbon allowed ten reuse cycles, maintaining the capture capacity. These results confirm that ACs from olive tree pruning residue have suitable capacity and stability for application as CO 2 adsorbents.

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“…Table 4 summarizes the CO 2 adsorption capacity of different materials from the reported literature. At present, most studies focus on the adsorption of pure CO 2 at 25 °C and 1 bar, with the samples possessing adsorption capacities of 2.81−4.44 mmol/g, 26,39,40 and some samples even have a high adsorption capacity of 10.51 mmol/g. 24 In this study, the adsorption capacity of the sample in pure CO 2 (Figure S2) was 3.16−4.00 and 0.77−1.07 mmol/g at 25 and 100 °C at 1 bar, respectively.…”

Section: Ftir Analysismentioning

confidence: 99%

CO₂ Adsorption on N-Doped Porous Biocarbon Synthesized from Biomass Corncobs in Simulated Flue Gas

et al. 2023

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This study was to develop a low-cost N-doped porous biocarbon adsorbent that can directly adsorb CO2 in high-temperature flue gas from fossil fuel combustion. The porous biocarbon was prepared by nitrogen doping and nitrogen–oxygen codoping through K2CO3 activation. Results showed that these samples exhibited a high specific surface area of 1209–2307 m2/g with a pore volume of 0.492–0.868 cm3/g and a nitrogen content of 0.41–3.3 wt %. The optimized sample CNNK-1 exhibited a high adsorption capacity of 1.30 and 0.27 mmol/g in the simulated flue gas (14.4 vol % CO2 + 85.6 vol % N2) and a high CO2/N2 selectivity of 80 and 20 at 25 and 100 °C and 1 bar, respectively. Studies revealed that too many microporous pores could hinder CO2 diffusion and adsorption due to the decrease of CO2 partial pressure and thermodynamic driving force in the simulated flue gas. The CO2 adsorption of the samples was mainly chemical adsorption at 100 °C, which depended on the surface nitrogen functional groups. Nitrogen functional groups (pyridinic-N and primary and secondary amines) reacted chemically with CO2 to produce graphitic-N, pyrrolic-like structures, and carboxyl functional groups (−N–COOH). Nitrogen and oxygen codoping increased the amount of nitrogen doping content in the sample, but acidic oxygen functional groups (carboxyl groups, lactones, and phenols) were introduced, which weakened the acid–base interactions between the sample and CO2 molecules. It was demonstrated that SO2 and water vapor had inhibition effects on CO2 adsorption, while NO nearly has no effect on the complex flue gas. Cyclic regenerative adsorption showed that CNNK-1 possessed excellent regeneration and stabilization ability in complex flue gases, indicating that corncob-derived biocarbon had excellent CO2 adsorption in high-temperature flue gas.

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In-situ activated ultramicroporous carbon materials derived from waste biomass for CO2 capture and benzene adsorption

Cited by 41 publications

References 56 publications

Sustainable hierarchically porous carbons from bio-oil to remove emerging contaminants

Sustainable hierarchically porous carbons from bio-oil to remove emerging contaminants

CO₂ Capture from Porous Carbons Developed from Olive Pruning Agro-Industrial Residue

CO₂ Adsorption on N-Doped Porous Biocarbon Synthesized from Biomass Corncobs in Simulated Flue Gas

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In-situ activated ultramicroporous carbon materials derived from waste biomass for CO2 capture and benzene adsorption

Cited by 41 publications

References 56 publications

Sustainable hierarchically porous carbons from bio-oil to remove emerging contaminants

Sustainable hierarchically porous carbons from bio-oil to remove emerging contaminants

CO2 Capture from Porous Carbons Developed from Olive Pruning Agro-Industrial Residue

CO2 Adsorption on N-Doped Porous Biocarbon Synthesized from Biomass Corncobs in Simulated Flue Gas

Contact Info

Product

Resources

About

CO₂ Capture from Porous Carbons Developed from Olive Pruning Agro-Industrial Residue

CO₂ Adsorption on N-Doped Porous Biocarbon Synthesized from Biomass Corncobs in Simulated Flue Gas