Preparation and evaluation of fine-tuned micropore biochar by lignin impregnation for CO2 and VOCs adsorption

Zhang, Xueyang; Cao, Lingyu; Xiang, Wei; Xu, Yue; Gao, Bin

doi:10.1016/j.seppur.2022.121295

Cited by 59 publications

(5 citation statements)

References 55 publications

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“…The AFO presented the bested values of R 2 adj, followed by the PSO and PFO. This same tendency was obtained for the statistical parameter SD (mg g -1 ), with the lowest values reached by the AFO, followed by the PSO and PFO [77][78][79][80]. Also, to confirm the best kinetic model, the BIC analysis was carried out.…”

Section: Propranolol Adsorption Kineticssupporting

confidence: 70%

Production of adsorbent for removal of propranolol hydrochloride: Use of residues from Bactris guineensis fruit palm with economically exploitable potential from the Colombian Caribbean

Franco

Vizualization

Ramos

et al. 2023

Journal of Molecular Liquids

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Section: Propranolol Adsorption Kineticssupporting

confidence: 70%

Production of adsorbent for removal of propranolol hydrochloride: Use of residues from Bactris guineensis fruit palm with economically exploitable potential from the Colombian Caribbean

Franco

Vizualization

Ramos

et al. 2023

Journal of Molecular Liquids

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“…Table 2 presents the results for pH PCZ . END.700 shows the highest value (7.34) at the point of zero charges [ 126 ]. This observation may explain why END.700 presented a higher capture than other biochars.…”

Section: Resultsmentioning

confidence: 99%

Valorization of Different Fractions from Butiá Pomace by Pyrolysis: H2 Generation and Use of the Biochars for CO2 Capture

et al. 2022

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This work valorizes butiá pomace (Butia capitata) using pyrolysis to prepare CO2 adsorbents. Different fractions of the pomace, like fibers, endocarps, almonds, and deoiled almonds, were characterized and later pyrolyzed at 700 °C. Gas, bio-oil, and biochar fractions were collected and characterized. The results revealed that biochar, bio-oil, and gas yields depended on the type of pomace fraction (fibers, endocarps, almonds, and deoiled almonds). The higher biochar yield was obtained by endocarps (31.9%wt.). Furthermore, the gas fraction generated at 700 °C presented an H2 content higher than 80%vol regardless of the butiá fraction used as raw material. The biochars presented specific surface areas reaching 220.4 m2 g−1. Additionally, the endocarp-derived biochar presented a CO2 adsorption capacity of 66.43 mg g−1 at 25 °C and 1 bar, showing that this material could be an effective adsorbent to capture this greenhouse gas. Moreover, this capacity was maintained for 5 cycles. Biochars produced from butiá precursors without activation resulted in a higher surface area and better performance than some activated carbons reported in the literature. The results highlighted that pyrolysis could provide a green solution for butiá agro-industrial wastes, generating H2 and an adsorbent for CO2.

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“…On the basis of the fitting curves and kinetic parameters, the adsorption mechanism was obtained. In this paper, the pseudo-first-order model, pseudo-second-order model, and Bangham model were applied to fit the adsorption data. , The above four models are given in eqs – q t = q normale ( 1 − e − k 1 t ) q t = k 2 q normale 2 t 1 + k 2 q normale t q t = q normale − q normale e k 3 t z where q t is the adsorption amount of toluene at time t and q e is the adsorption capacity at equilibrium (mg·g –1 ); k 1 and k 2 are the pseudo-first-order adsorption rate constants (min –1 ) and pseudo-second-order adsorption rate constants (min –1 ), respectively; k 3 is the Bangham constant (min –1 ); and z is the constant.…”

Section: Methodsmentioning

confidence: 99%

“…In this paper, the pseudo-firstorder model, pseudo-second-order model, and Bangham model were applied to fit the adsorption data. 33,34 The above four models are given in eqs 2−4…”

Section: Adsorption Performance Evaluationmentioning

confidence: 99%

New Porous Carbon Material Derived from Carbon Microspheres Assembled in Hollow Carbon Spheres and Its Application to Toluene Adsorption

Qin

Asamoah

et al. 2023

Langmuir

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In this paper, a new porous carbon material adsorbent was prepared using carbon microspheres assembled in hollow carbon spheres (HCS) with a hydrothermal method. Transmission electron microscopy, scanning electron microscopy, X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, X-ray diffraction, and Raman spectroscopy were used to characterize the adsorbents. It was found that the diameter of carbon microspheres derived from 0.1 mol/L glucose was about 130 nm, which could be inserted inside HCS (pore size was 370−450 nm). The increase in glucose concentration would promote the diameter of carbon microspheres (CSs), and coarse CSs could not be loaded in the mesopores or macropores of HCS. Thus, the C 0.1 @HCS adsorbent had the highest Brunauer−Emmett−Teller surface area (1945 m 2 /g) and total pore volume (1.627 cm 3 /g). At the same time, C 0.1 @HCS posed a suitable ratio of micropores and mesopores, which could provide adsorption sites and volatile organic compound diffusion channels. Moreover, oxygen-containing functional groups −OH and C�O in CSs were also introduced into HCS, and the adsorption capacity and regenerability performance of the adsorbents were improved. The dynamic adsorption capacity of C 0.1 @HCS for toluene reached 813 mg/g, and the Bangham model was more suitable for describing the toluene adsorption process. The adsorption capacity was stably kept above 770 mg/g after eight adsorption−desorption cycles.

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Preparation and evaluation of fine-tuned micropore biochar by lignin impregnation for CO2 and VOCs adsorption

Cited by 59 publications

References 55 publications

Production of adsorbent for removal of propranolol hydrochloride: Use of residues from Bactris guineensis fruit palm with economically exploitable potential from the Colombian Caribbean

Production of adsorbent for removal of propranolol hydrochloride: Use of residues from Bactris guineensis fruit palm with economically exploitable potential from the Colombian Caribbean

Valorization of Different Fractions from Butiá Pomace by Pyrolysis: H2 Generation and Use of the Biochars for CO2 Capture

New Porous Carbon Material Derived from Carbon Microspheres Assembled in Hollow Carbon Spheres and Its Application to Toluene Adsorption

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