The effect of carbonization temperature on the capacity and mechanisms of Cd(II)-Pb(II) mix-ions adsorption by wood ear mushroom sticks derived biochar

Ji, Yining; Zheng, Na; An, Qirui; Sun, Shengwei; Wang, Sujing; Li, Xiaoqian; Li, Pengyang; Hua, Xiuyi; Dong, Deming; Zhao, Chunshun; Li, Zimeng; Zhang, Wenhui

doi:10.1016/j.ecoenv.2022.113646

Cited by 22 publications

(4 citation statements)

References 57 publications

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“…The co-pyrolysis of PP and MS can effectively increase the content of hydrogen supplied by the pyrolysis reaction system and improve the resource utilization of MS. The elemental analysis of MS and PP was consistent with the literature [ 47 , 48 ]. Therefore, the co-pyrolysis process of MS and PP was feasible and efficient, and further studies were necessary.…”

Section: Resultssupporting

confidence: 87%

Sustainable Environmental Assessment of Waste-to-Energy Practices: Co-Pyrolysis of Food Waste and Discarded Meal Boxes

Yang

Xiao

et al. 2022

Foods

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The reuse of biomass waste is conducive to the recovery of resources and can solve the pollution problem caused by incineration and landfill. For this reason, the thermogravimetric analyzer (TGA) was used to study the pyrolysis of the mushroom sticks (MS) and discarded meal boxes at different heating rates (10 °C·min−1, 20 °C·min−1, 30 °C·min−1). The statistical analysis showed that the factors of pyrolysis temperature and particle size had a greater effect, while the heating rate was significant. The TGA revealed that the maximum weight loss rate of the co-pyrolysis of MS and discarded meal boxes increased with the rise of the heating rate, the temperature at which the pyrolysis started and ended increased, and the thermal weight loss displayed a hysteresis phenomenon. By comparing the theoretical heat weight loss curves with the experimental curves, a synergistic effect of the co-pyrolysis process between MS and discarded meal boxes was demonstrated, and the co-pyrolysis process resulted in a reduction in the solid residue content of the products. The Coats-Redfern method was used to fit the pyrolysis process of MS and discarded meal boxes, which applied the first-order kinetic model to describe the main process of pyrolysis and obtained the reaction activation energy between 43 and 45 kJ·mol−1. The results indicated that co-pyrolysis of MS and discarded meal boxes could decrease the activation energy of the reaction, make the reaction easier, promote the degree of pyrolysis reaction, reduce the generation of pollutants, and provide a theoretical basis for the recycling and energy utilization of MS and discarded meal boxes.

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Section: Resultssupporting

confidence: 87%

Sustainable Environmental Assessment of Waste-to-Energy Practices: Co-Pyrolysis of Food Waste and Discarded Meal Boxes

Yang

Xiao

et al. 2022

Foods

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“…On the other hand, OPB600 kept the highest equilibrium adsorption capacity, followed by OPB400. Similar results were obtained on wood ear mushroom stick-derived biochar [26] and microalgal residue-derived biochar [29], for adsorption of Cd(II) and Pb(II). These observations disclosed that biochar prepared at higher temperatures has an available surface structure for adsorption and greater adsorption affinity for ions, resulting in better adsorption capacity.…”

Section: Effect Of Initial La(iii) and Y(iii) Concentrationsupporting

confidence: 82%

“…The adsorption amount decreased as the OPB dosage was incremented. At high biochar dosages, small OPB particles were prone to agglomeration, leading to a decrease in the number of effective adsorption sites, and the tortuous adsorption paths resulting from overlapping particle surface areas can hinder the mass transfer process [25, 26]. In addition, the elevation of solution equilibrium pH value ( p H e ) in Figure 6 suggests that the native alkalinity of OPB biochar increased the solution pH, leading to the precipitation of partial RE ions and thus affecting the adsorption [16].…”

Section: Resultsmentioning

confidence: 99%

Development of Efficient Biochar Produced from Orange Peel for Effective La(III) and Y(III) Adsorption

Liu,

Feng,

Rao

et al. 2023

Adsorption Science & Technology

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In this work, orange peel (OP) was used as raw material to produce biochar. The effect of oxygen-limited carbonization temperature (200, 400, and 600°C) on the physicochemical properties and adsorption behavior of orange peel biochar (OPB) toward La(III) and Y(III) in aqueous media was studied. The prepared OPB samples were characterized by SEM, FTIR, and XRD. The experimental results exhibited effective removal of La(III) and Y(III) from aqueous solution by OPB. The carbonization promoted the pore development, and the adsorption process occurred rapidly. The main chemisorption of La(III) and Y(III) on OPB was analyzed by the Langmuir and pseudo-second-order kinetic model, and the participations of electrostatic attraction, exchange, and hydroxyl and carboxyl complexation in OPB were confirmed. The Langmuir maximum capacity of 55.57 mg/g and 31.49 mg/g was obtained at the optimum pH range of 4~6 and the OPB dosage of 1 g/L and 2 g/L for La(III) and Y(III). The efficient orange peel biochar with high adsorption performance can be obtained by considering suitable carbonization temperature.

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“…At pH levels above 7, the adsorption capacity of Mn(Ⅱ)/Cd(Ⅱ) shows no marked increase, attributable to the precipitation of Mn(Ⅱ)/Cd(Ⅱ) as hydroxides at higher pH levels (Ji et al 2022). In conclusion, the adsorption capacity and rate of sediments for Mn(Ⅱ)/Cd(Ⅱ) are optimal at a pH of 7.…”

Section: Effects Of Temperature and Solution Phmentioning

confidence: 80%

Study on the adsorption and transport characteristics of Mn(Ⅱ)/Cd(Ⅱ) by sediments in the upper reaches of the Hanjiang River in China

Yang,

Song,

Zhao

et al. 2024

Preprint

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To investigate the pollution characteristics and transformation dynamics of heavy metals in the sediments of the upper reaches of the Hanjiang River, this study conducted a comprehensive study analyzing the adsorption properties and transport mechanisms of Mn(Ⅱ)/Cd(Ⅱ) in these sediments. This was achieved through static and dynamic adsorption experiments, coupled with the application of Hydrus-1D software for detailed analysis. The outcomes of the static adsorption experiments revealed that temperature exerted a minimal influence on the adsorption energy, whereas the pH of the solution significantly impacted it. Both adsorption isotherms and kinetics were employed for fitting the adsorption processes. The results indicated that the adsorption behavior of Mn(Ⅱ)/Cd(Ⅱ) in the sediments aligned more closely with the pseudo-second-order kinetic model. Additionally, intragranular diffusion was found to play a substantial role in the adsorption process. This suggests that the adsorption of Mn(Ⅱ)/Cd(Ⅱ) in the sediments involved a combination of physical and chemical adsorption mechanisms. Furthermore, the dynamic adsorption experiments demonstrated that the initial concentration of heavy metals crucially influenced their migration within the sediments. Characterization results pointed towards ion exchange, complexation reactions, and precipitation reactions as the primary mechanisms driving sediment adsorption of Mn(Ⅱ)/Cd(Ⅱ). Overall, this study research provides enhanced insights into the environmental behavior of these heavy metals and offers valuable guidance for risk assessment related to Mn(Ⅱ)/Cd(Ⅱ) in the sediments of the upper Hanjiang River.

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The effect of carbonization temperature on the capacity and mechanisms of Cd(II)-Pb(II) mix-ions adsorption by wood ear mushroom sticks derived biochar

Cited by 22 publications

References 57 publications

Sustainable Environmental Assessment of Waste-to-Energy Practices: Co-Pyrolysis of Food Waste and Discarded Meal Boxes

Sustainable Environmental Assessment of Waste-to-Energy Practices: Co-Pyrolysis of Food Waste and Discarded Meal Boxes

Development of Efficient Biochar Produced from Orange Peel for Effective La(III) and Y(III) Adsorption

Study on the adsorption and transport characteristics of Mn(Ⅱ)/Cd(Ⅱ) by sediments in the upper reaches of the Hanjiang River in China

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