Biomass type effect on biochar surface characteristic and adsorption capacity relative to silver and copper

Tomczyk, Agnieszka; Sokołowska, Z.; Boguta, Patrycja

doi:10.1016/j.fuel.2020.118168

Cited by 86 publications

(21 citation statements)

References 56 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…is indicated that pseudo second-order model was more valid to interpret the adsorption behavior. Similar cases were also reported by other researchers [40,41]. It could be concluded that chemisorption seemed to be the rate-limiting step which was related to bond forces via electrons sharing or exchange between Cu(II) and PACs.…”

Section: Adsorption Kineticssupporting

confidence: 88%

K2CO3-Activated Pomelo Peels as a High-Performance Adsorbent for Removal of Cu(II): Preparation, Characterization, and Adsorption Studies

Liu

Wei

2021

Journal of Chemistry

View full text Add to dashboard Cite

Activated carbons (ACs) were prepared from pomelo peels by K2CO3 activation and used as an adsorbent (PAC) for the removal of Cu(II) from aqueous solutions. BET, SEM, and FT-IR were employed for the characterization of the obtained ACs. The optimum ACs were reported at activation temperature of 850°C, activation time of 60 min, and impregnation ratio of 3, which had a high surface area (1213 m2/g) and total pore volume (0.57 cm3/g). The resulting ACs were used for the adsorption of Cu(II) from aqueous solutions in the batch mode and yielded a superior adsorption capacity of 139.08 mg/g. The pH of optimum adsorption was determined as 5. Pseudo first-order model, pseudo second-order model, and intraparticle diffusion model were applied to describe the adsorption processes. The adsorption kinetic data were found to follow the pseudo second-order model. The adsorption isotherms data were analyzed using Langmuir, Freundlich, Temkin, and Dubinin–Radushkevich models. The Langmuir model was found to provide the best fit, and the calculated adsorption capacity was 151.35 mg/g.

show abstract

Section: Adsorption Kineticssupporting

confidence: 88%

K2CO3-Activated Pomelo Peels as a High-Performance Adsorbent for Removal of Cu(II): Preparation, Characterization, and Adsorption Studies

Liu

Wei

2021

Journal of Chemistry

View full text Add to dashboard Cite

show abstract

“…Langmuir adsorption model presumes that adsorption occurs at a specific homogeneous adsorption site within the adsorbent (Tomczyk et al 2020). Once a molecule occupies an adsorption site, no further equilibrium saturation point of adsorption will occur (Foo &Hameed 2010).…”

Section: Adsorption Isothermmentioning

confidence: 99%

Industrial lignins: the potential for efficient removal of Cr(VI) from wastewater

Zhang

Zhou

2021

Environ Sci Pollut Res

View full text Add to dashboard Cite

Cr(VI), a serious threat to human health, widely exists in the effluents of various industrial processes.. In this paper, the potential of industrial lignin for efficient removal of Cr(VI) from wastewater were systematacially investigated, including pulping black liquor lignin (BLN), enzymolysis lignin (ELN), and SPORL pretreatment spent liquor (FS). The structure characterizations of three lignins were investigated by TG, FTIR, BET, SEM, and XPS. Among these three lignins, BLN showed the highest adsorption amount of Cr(VI) and best selectivity in wastewater simulation. According to the Langmuir model, the calculated maximum adsorption amount of Cr(VI) on ELN, BLN, and FS was 765.60, 880.57, and 721.58 mg g -1 , respectively. The adsorption of Cr(VI) by industrial lignins was a chemisorption process, during which Cr(VI) was reduced to low toxic Cr(III). This paper provided a promising application for the effective utilization of industrial lignins.

show abstract

“…The biochar incorporated in the field experiment was produced from sunflower husk in the pyrolysis process in the temperature range of 450–550 °C and consist on grains with diameters from 50 μm up to 10 mm. The biochar was characterized by specific surface area of 2.0 m 2 g −1 in occupancy of Cu ions and 5.1 m 2 g −1 for Ag ions 23 .…”

Section: Methodsmentioning

confidence: 99%

“…The main research trends focused on the application of biochar in agriculture include improvement of soil water retention 20 , reduction of heavy metal pollution in soil 21 , and improvement of the fertilization process 22 . Biochar is a porous material characterized by extremely high specific surface area 23 and is a completely natural supplementation material. Recently, the ability of biochar to remove radioactive material from soil has been investigated 24 .…”

Section: Introductionmentioning

confidence: 99%

Radon emission fluctuation as a result of biochar application into the soil

Szewczak

Jednoróg

Wołoszczuk

et al. 2021

Sci Rep

View full text Add to dashboard Cite

The presented research was focused on the analysis of the impact of biochar application into the soil on the radon exhalation process as a new issue of radiation protection in agriculture. Field measurements of the radon exhalation rate utilizing two methods—active and passive as well as laboratory measurements of the radon emanation coefficient were performed. In laboratory a soil samples with sunflower husk biochar were analysed using the accumulation chamber technique. At the final step the assessment of the effective dose for humans coming from radon exhalation from soil depending on biochar dose applied were evaluated. The doses of biochar applied in the analysed experimental fields were 0, 20, 40, 60, 80, and 100 Mg ha−1. The results show that biochar application into the soil contribute to a decrease in the emanation coefficient from a value around 7% to less than 2% with a simultaneous decrease in the radon exhalation rate from 4.4 to 14.8 mBq m−2 s−1 when the biochar dose increase from 0 to 100 Mg ha−1.

show abstract

Biomass type effect on biochar surface characteristic and adsorption capacity relative to silver and copper

Cited by 86 publications

References 56 publications

K2CO3-Activated Pomelo Peels as a High-Performance Adsorbent for Removal of Cu(II): Preparation, Characterization, and Adsorption Studies

K2CO3-Activated Pomelo Peels as a High-Performance Adsorbent for Removal of Cu(II): Preparation, Characterization, and Adsorption Studies

Industrial lignins: the potential for efficient removal of Cr(VI) from wastewater

Radon emission fluctuation as a result of biochar application into the soil

Contact Info

Product

Resources

About