Simultaneous achievement of efficient hemicellulose separation and inhibition of lignin repolymerization using pyruvic acid treatment

Liang, Jiarui; Liu, Baojie; Li, Xiangyu; Mo, Xiaorong; Qin, Chengrong; Liang, Chen; Yong, Qiang; Yao, Shuangquan

doi:10.1016/j.biortech.2023.129328

Cited by 10 publications

(1 citation statement)

References 46 publications

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“…For AP, the weight loss occurred in the ranges of 298.15−373.15, 373.15−506.32, and 506.32−900 K, which arose by the evaporation of physically adsorbed water, the degradation of cellulose and hemicelluloses, and the carbonization of residual cellulose, respectively. 43,44 For AP-G1.0-AMP and AP-G2.0-AMP, the evaporation of physically adsorbed water from 298.15 to 373.15 K is also responsible for the first stage of weight loss. The pyrolysis of cellulose, hemicelluloses, and part of the PAMAM dendrimers causes the second-stage weight loss of the biosorbents from 373.15 to 506.32 K, accounting for 3.56 and 3.42% of the weight loss.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Synthesis of Aminomethylpyridine-Decorated Polyamidoamine Dendrimer/Apple Residue for the Efficient Capture of Cd(II)

Cong,

Wu,

Wang

et al. 2024

Langmuir

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Water contamination irritated by Cd(II) brings about severe damage to the ecosystem and to human health. The decontamination of Cd(II) by the adsorption method is a promising technology. Here, we construct aminomethylpyridinefunctionalized polyamidoamine (PAMAM) dendrimer/apple residue biosorbents (AP-G1.0-AMP and AP-G2.0-AMP) for adsorbing Cd(II) from aqueous solution. The adsorption behaviors of the biosorbents for Cd(II) were comprehensively evaluated. The maximum adsorption capacities of AP-G1.0-AMP and AP-G2.0-AMP for Cd(II) are 1.40 and 1.44 mmol•g −1 at pH 6. The adsorption process for Cd(II) is swift and can reach equilibrium after 120 min. The film diffusion process dominates the adsorption kinetics, and a pseudo-second-order model is appropriate to depict this process. The uptake of Cd(II) can be promoted by increasing concentration and temperature. The adsorption isotherm follows the Langmuir model with a chemisorption mechanism. The biosorbents also display satisfied adsorption for Cd(II) in real aqueous media. The adsorption mechanism indicates that C−N, N�C, C−O, CONH, N−H, and O−H groups participate in the adsorption for Cd(II). The biosorbents display a good regeneration property and can be reused with practical value. The as-prepared biosorbents show great potential for removing Cd(II) from water solutions with remarkable significance.

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Section: ■ Results and Discussionmentioning

confidence: 99%