Optimized synthesis of granular fuel and granular activated carbon from sawdust hydrochar without binder

Yu, Fengbo; Zhu, Xiangdong; Jin, Wenjie; Fan, Jiajun; Clark, James H.; Zhang, Shicheng

doi:10.1016/j.jclepro.2020.122711

Cited by 27 publications

(17 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…They found out that the increase in the weight ratio of NiCl 2 led to an increase in the surface area and total pore volume of the obtained material. In addition, several other authors found that increasing the proportion of transition metal chlorides, such as ZnCl 2 , FeCl 3 , CoCl 2 , and CuCl 2 , led to improved textural properties [ 40 , 46 , 47 , 48 , 49 , 50 ]. The transition metals impregnated in the precursor material are cross-linked to the surface functional groups of the biomass, promoting the chemical dehydration and decomposition of the lignocellulosic material during pyrolysis.…”

Section: Resultsmentioning

confidence: 99%

“…After acid washes, the transition metals are removed, and the previously occupied spaces become free, forming the pores. Therefore, with higher weight rations of these salts, more transition metal ions are available, improving the formation of the pore structure [ 40 , 48 , 49 , 50 ]. In the present work, although the presence of Ni in the carbon matrix was shown by the EDS spectra ( Figure 1 ), part of it may have been eliminated with the acid wash.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Adsorptive Features of Magnetic Activated Carbons Prepared by a One-Step Process towards Brilliant Blue Dye

et al. 2023

View full text Add to dashboard Cite

Water pollution by dyes has been a major environmental problem to be tackled, and magnetic adsorbents appear as promising alternatives to solve it. Herein, magnetic activated carbons were prepared by the single−step method from Sapelli wood sawdust, properly characterized, and applied as adsorbents for brilliant blue dye removal. In particular, two magnetic activated carbons, MAC1105 and MAC111, were prepared using the proportion of biomass KOH of 1:1 and varying the proportion of NiCl2 of 0.5 and 1. The characterization results demonstrated that the different proportions of NiCl2 mainly influenced the textural characteristics of the adsorbents. An increase in the surface area from 260.0 to 331.5 m2 g−1 and in the total pore volume from 0.075 to 0.095 cm3 g−1 was observed with the weight ratio of NiCl2. Both adsorbents exhibit ferromagnetic properties and the presence of nanostructured Ni particles. The different properties of the materials influenced the adsorption kinetics and equilibrium of brilliant blue dye. MAC111 showed faster kinetics, reaching the equilibrium in around 10 min, while for MAC1105, it took 60 min for the equilibrium to be reached. In addition, based on the Sips isotherm, the maximum adsorption capacity was 98.12 mg g−1 for MAC111, while for MAC1105, it was 60.73 mg g−1. Furthermore, MAC111 presented the potential to be reused in more adsorption cycles than MAC1105, and the use of the adsorbents in the treatment of a simulated effluent exhibited high effectiveness, with removal efficiencies of up to 90%.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Adsorptive Features of Magnetic Activated Carbons Prepared by a One-Step Process towards Brilliant Blue Dye

et al. 2023

View full text Add to dashboard Cite

show abstract

“…In the scientific literature [ 7 , 8 , 16 , 17 , 36 , 37 ] new carbon materials are described when produced without a binder. Activated carbons are prepared in different morphologies, granulation, in a form of pellets or monoliths.…”

Section: Discussionmentioning

confidence: 99%

Research on the Development of Technologies for the Production of Granulated Activated Carbons Using Various Binders

Skoczko¹,

Guminski²

2020

Materials

View full text Add to dashboard Cite

Activated carbons (ACs) are processed carbon-rich materials with a highly developed inner surface and significant porosity used for different media treatment in municipal and industrial plants. Activated carbon may be manufactured as powdered activated carbon (PAC), gritty activated carbon (in a form of raw angels grains) or granulated activated carbon (GAC). The production of the GAC is based on carbonaceous raw materials and various types of binders. The carbon mass is mixed with the binder and formed in cylindrical granules. The binder’s recognition is in a scientific literature side-topic and still needs wider examination. For many years GAC production have been concentrated on the possibility of using sodium carboxymethylcellulose (SCMC). Therefore, the aim of the research was to develop a new binder, in the available technology of granulated activated carbon production. Such binders were tested such as: tall oil (TO), sugar beet molasses (SBM), sodium carboxymethylcellulose (SCMC), SCMC using a verified technological process and SCMC with the addition of gas tar (GT). The conducted research shows that all the quality requirements were met by activated carbons with SBM as a binder. Additionally they showed very high adsorption properties. The manufacturing process was shorter in comparison to other tested binders and more efficient.

show abstract

“…The solid adsorption method stands out for its simplicity, high efficiency, and low contamination . Previous studies have discussed various solid adsorbents in the literature, including activated carbon, , zeolite, − silver exchange zeolite, , and organic or inorganic mixed materials. , Activated carbon is cost-effective and stable in acidic or alkaline environments. However, due to its unique chemical and physical properties, activated carbon has a low ignition temperature, which is not suitable in oxygen-rich and high-temperature environments .…”

Section: Introductionmentioning

confidence: 99%

“…7 The solid adsorption method stands out for its simplicity, high efficiency, and low contamination. 8 Previous studies have discussed various solid adsorbents in the literature, including activated carbon, 9,10 zeolite, 11−13 silver exchange zeolite, 14,15 and organic or inorganic mixed materials. 16,17 Activated carbon is costeffective and stable in acidic or alkaline environments.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Radioactive Iodine Trapping Mechanism by Zinc-Based Metal–Organic Frameworks with Various N-Containing Carboxylate Ligands

et al. 2023

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

This study aimed to develop effective adsorbents for capturing radioactive iodine in nuclear power waste gas. Two zinc metal−organic frameworks (Zn-MOFs) were synthesized and found to have favorable properties such as a large surface area, thermal stability, surface rich in π-electron-containing nitrogen, and redox potential. Adsorption experiments revealed maximum capacities of 1.25 and 1.96 g g −1 for the MOFs at 75 °C, with the pseudo-second-order kinetic model fitting the data well. The Langmuir equation provided a better fit in cyclohexane, with maximum adsorption amounts of 249 and 358 mg g −1 for Zn-MOF-1 and Zn-MOF-2, respectively. The MOFs were also stable during six cycles of adsorption and desorption. Furthermore, electron transfer occurred due to the synergistic adsorption of Zn, N, and O atoms, resulting in the conversion of some iodine to polyiodide. Zn-MOF-2 exhibited better chemisorption than Zn-MOF-1 due to a smaller highest occupied molecular orbital (HOMO)−lowest unoccupied molecular orbital (LUMO) gap. Notably, it was discovered that N-containing radicals had stronger interactions with iodine compared to radicals without N. These findings provide valuable insights into MOF synthesis and environmental protection.

show abstract

Optimized synthesis of granular fuel and granular activated carbon from sawdust hydrochar without binder

Cited by 27 publications

References 44 publications

Adsorptive Features of Magnetic Activated Carbons Prepared by a One-Step Process towards Brilliant Blue Dye

Adsorptive Features of Magnetic Activated Carbons Prepared by a One-Step Process towards Brilliant Blue Dye

Research on the Development of Technologies for the Production of Granulated Activated Carbons Using Various Binders

Analysis of Radioactive Iodine Trapping Mechanism by Zinc-Based Metal–Organic Frameworks with Various N-Containing Carboxylate Ligands

Contact Info

Product

Resources

About