Coconut shell activated carbon as an alternative adsorbent of inhibitors from lignocellulosic biomass pretreatment

Freitas, Juliana Vieira de; Nogueira, Francisco Guilherme Esteves; Farinas, Cristiane S.

doi:10.1016/j.indcrop.2019.05.018

Cited by 61 publications

(25 citation statements)

References 37 publications

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“…Lately, it is longer than lignocellulosic resources and waste biomass is the most used precursors for the production of the activated carbon (Table 5). Summary of the properties of some raw materials and the properties of activated carbon generated [24,57,58].…”

Section: Activated Carbon As the Essential Phenol Removal Adsorbent 61 The Activated Carbon Precursorsmentioning

confidence: 99%

Nanoporous Carbon Materials toward Phenolic Compounds Adsorption

Mubarak¹,

Ahmed²,

Gabr³

2021

Nanopores

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Nanoporous carbon-based sorbents are used to generate a three-dimensional real-space model of the nanoporous structure using the concept of Gaussian random fields. This pore model is used to derive important pore size characteristics, which are cross-validated against the corresponding values from gas sorption analysis. After filling the model pore structure with an aqueous electrolyte and rearranging the ions via a Monte Carlo simulation for different applied adsorption potentials. In comparison to nanopores formed from solid-state membranes (e.g., silicon oxide, aluminum oxide, polymer membranes, glass, hafnium oxide, gold, etc.) and very recently 2D materials (e.g., boron nitride, molybdenum disulfide, etc.), those nanopores produced from carbon materials (e.g., graphene, carbon nanotubes (CNTs), diamond, etc.), especially those from graphene appear to be perfect for adsorption process. The thickness of carbon structures nanopores can be as thin as 0.35 nm, resembling the height of the base spacing. Moreover, the sizes of carbon structures nanopores can be precisely fabricated and tuned to around 1.0 nm, the similar size of many heavy metals and organic pollutants molecules. Furthermore, carbon materials are chemically stable and feature-rich surface chemistry. Therefore, various carbon nanopore sequencing techniques have been developed. Finally, in this chapter the adsorption of phenolic compounds on nanoporous carbon specifically the active carbon are overviewed and how to affect the heterogeneity of activated carbon surface, PH of the solution on the efficiency of adsorption.

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Section: Activated Carbon As the Essential Phenol Removal Adsorbent 61 The Activated Carbon Precursorsmentioning

confidence: 99%

Nanoporous Carbon Materials toward Phenolic Compounds Adsorption

Mubarak¹,

Ahmed²,

Gabr³

2021

Nanopores

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“…Activated carbon (AC) is the most popular commercial adsorbent due to its rich raw materials, perfect adsorption capacity, and easy processability. Current studies usually focus on using biomass and other low-cost materials as precursors, such as coconut shells [19,20], palm shells [21,22], rice husks [23,24], date stones [25,26], and walnut shells [27,28].…”

Section: Introductionmentioning

confidence: 99%

Removal of Acid Red 88 Using Activated Carbon Produced from Pomelo Peels by KOH Activation: Orthogonal Experiment, Isotherm, and Kinetic Studies

Liu

Xing

2021

Journal of Chemistry

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Activated carbon (PPAC) from pomelo peels was prepared by carbonization and KOH activation. The performance of PPAC was assessed by removing acid red 88 (AR88) in aqueous solution. The most suitable activation processes were found by orthogonal experiments, aimed to achieve the maximum of removal capacity of AR88. Moreover, the possible mechanisms of adsorption were studied through the results of characterization, isotherm fitting, and kinetics simulation. Results showed the preparation parameter that mattered the most to AR88 removal efficiency was the activation temperature of PPAC, followed by impregnation ratio and activation time. The optimal preparation conditions of PPAC were at activation temperature 800°C, activation time 90 min, and impregnation ratio 2.5 : 1. The characterization results showed optimal PPAC had a microporous and amorphous carbon structure whose BET specific area and total pore volume were 2504 m2/g and 1.185 cm3/g, respectively. The isotherm fitting demonstrated that the sorption process followed the Langmuir model, and theoretical maximal sorption value was 1486 mg/g. The kinetics simulation showed that the pseudo-second-order model described the sorption behavior better, suggesting chemisorption seemed to be the rate-limiting step in the adsorption process. This work presented that PPAC was a promising and efficient adsorbent for AR88 from water.

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“…Extensive research has been carried out in the study and preparation of activated carbons from lignocellulosic materials, especially on nutshells and fruit stones, as they are capable of producing high-quality activated carbons in terms of high surface area, high porosity, and high yield. These materials include apricot stones, bamboo, coconut shell, macadamia nutshell, olive stones, and pistachio nut shells [25][26][27]. Results indicate that some of these materials are suitable precursors for the production of activated carbons which in addition to high surface area and pore volume can provide a range of pore size distribution, appropriate hardness, and bulk density.…”

Section: Introductionmentioning

confidence: 99%

Active Carbon from Microwave Date Stones for Toxic Dye Removal: Setting the Design Capacity

Hijab

Parthasarathy

et al. 2020

Chem Eng & Technol

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The widely used toxic dye malachite green (MG) poses a significant risk to human health, having a mutagenic effect. Waste date stones were used to produce microwave‐activated carbons and were applied to adsorb the highly toxic dye. The critically important task of selecting the correct design adsorption capacity for different effluent pollutant concentrations to meet effluent discharge limit standards is described and a novel design selection criteria approach is presented.

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Coconut shell activated carbon as an alternative adsorbent of inhibitors from lignocellulosic biomass pretreatment

Cited by 61 publications

References 37 publications

Nanoporous Carbon Materials toward Phenolic Compounds Adsorption

Nanoporous Carbon Materials toward Phenolic Compounds Adsorption

Removal of Acid Red 88 Using Activated Carbon Produced from Pomelo Peels by KOH Activation: Orthogonal Experiment, Isotherm, and Kinetic Studies

Active Carbon from Microwave Date Stones for Toxic Dye Removal: Setting the Design Capacity

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