Statistical evaluation of cow-dung derived activated biochar for phenol adsorption: Adsorption isotherms, kinetics, and thermodynamic studies

Jain, Marut; Khan, Sadaf Aiman; Sahoo, Arun Kumar; Dubey, Prashant; Pant, Kamal Kishore; Ziora, Zyta M.; Blaskovich, Mark A.T.

doi:10.1016/j.biortech.2022.127030

Cited by 95 publications

(20 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Other studies have shown that physical adsorption may also occur simultaneously during chemisorption-dominated adsorption processes [48]. The negative value of ∆G 0 indicated that the adsorption of Pb 2+ by SRC was spontaneous [49]. ∆G 0 decreased from −0.29 to −6.65 kJ/mol as the temperature increased from 293 K to 333 K, indicating that the rise in temperature facilitated the adsorption response [50].…”

Section: Adsorption Thermodynamicsmentioning

confidence: 91%

Co-Utilization of Sewage Sludge and Rice Husk in Ceramsite Preparation with Selective Adsorption Capacity to Pb

Wang

2022

Materials

View full text Add to dashboard Cite

Realizing the green recycling of sludge is an important link to effectively solve the problem of sludge disposal. In this paper, sewage sludge (SS) and rice husk (RH) were utilized as raw materials in preparing novel ceramsite (SRC) for the treatment of lead-containing wastewater, and its adsorption mechanism was explored. The results showed that the optimal preparation conditions were 40% RH + 60% SS mixture, a sintering temperature of 1190 °C, and a sintering time of 20 min. The basic properties of SRC met Chinese artificial ceramsite filter material standards for water treatment (CJ/T 299-2008). Under optimum adsorption conditions (pH = 6, 1 g/L SRC dosage, 20 mg/L Pb(NO)3 concentration, 18 h), the removal rate of Pb2+ reached 94.7%, and the equilibrium adsorption capacity was 18.94 mg/g. The adsorption process was more consistent with the pseudo-second-order kinetic model and the Langmuir isotherm model, indicating that the adsorption process was dominated by chemisorption. Thermodynamic parameters (ΔH0 > 0, ΔG0 < 0, ΔS0 > 0) indicated that the adsorption reaction was spontaneous and endothermic. The possible adsorption mechanisms are as follows: (1) SRC is rich in layered mesoporous structure, which provides sufficient reaction sites for Pb adsorption; (2) the sintered lawsonite and muscovite can strongly attract Pb and then form a new phase (Pb10[Si2O7]3(OH)2); (3) Pb2+ can bond with the Si–O- bond in aluminosilicates, and the introduction of Pb elevates the degree of polymerization of aluminosilicates in turn, indicating that the adsorption process is stable.

show abstract

Section: Adsorption Thermodynamicsmentioning

confidence: 91%

Co-Utilization of Sewage Sludge and Rice Husk in Ceramsite Preparation with Selective Adsorption Capacity to Pb

Wang

2022

Materials

View full text Add to dashboard Cite

show abstract

“…ZnAl-LDH, ZnAl-Hydrochar, and ZnAl-Humic acid tend to follow the Freundlich isotherm model because the R 2 value is closer to 1 compared to the 3). Freundlich isotherm assumes that the adsorption process is physisorption and occurs in multilayers (Jain et al, 2022) . The maximum adsorption capacity of ZnAl-LDH, ZnAl-Hydrochar, and ZnAl-Humic acid were 48.077 mg/g, 90.090 mg/g, 94.340 mg/g, respectively.…”

Section: Figure 2 Ftir Spectra Of Adsorbentsmentioning

confidence: 99%

Hydrochar and Humic Acid as Template of ZnAl Layered Double Hydroxide for Adsorption of Phenol

Badaruddin

Ahmad

Fitri

et al. 2022

Sci. Technol. Indones

View full text Add to dashboard Cite

The adsorbents potential ZnAl-LDH, ZnAl-Hydrochar, and ZnAl-Humic acid were prepared using the coprecipitation method. The adsorbents were characterization by XRD, FTIR, and BET analysis. XRD peaks of ZnAl-LDH at 10.29°, 20.07°, 29.59°, 32.12°, 34.02°, 48.06°, and 60.16°. The FTIR absorption peak was observed at 3400-3500 cm−1, 1600-1700 cm−1, 1381 cm−1, 1000 cm−1, 500-700 cm−1. All adsorbents exhibited N2 adsorption-desorption isotherms type IV classified as a mesoporous structure (pore size= 2-50 nm). The surface areas of composites were higher than LDH and following order: ZnAl-Hydrochar > ZnAl-Humic acid > ZnAl-LDH. The kinetic parameter showed the pseudo-second-order kinetics model. The maximum adsorption capacity of ZnAl-LDH, ZnAl-Hydrochar, and ZnAl-Humic acid were 48.077 mg/g, 90.090 mg/g, 94.340 mg/g, respectively; with Freundlich isotherm model. Reusability after 5 times of ZnAl-LDH, ZnAl-Hydrochar, and ZnAl-Humic acid in the range 49.81-0.890%, 95.92-9.84%, and 70.02-5.72%, respectively. The adsorbent can be used up to 3 times.

show abstract

“…Previous studies reported that high-temperature biochar has a good adsorption potential than low-temperature biochar indicating the significance of the present study. [15,16,[39][40][41][42] Table 1 compares the q max of phenol removal using other biochars to the q max of phenol removal using PP biochars, demonstrating that PP biochars have great adsorption potential for the elimination of hazardous materials.…”

Section: Adsorption Isothermsmentioning

confidence: 99%

A Comparative Study of Phenol Removal by Pisum‐sativum Peels Biochars Derived at Different Pyrolysis Temperatures: Isotherm, Kinetic and Thermodynamic Modelling

2022

View full text Add to dashboard Cite

Pea peels were used for the preparation of biochar at different temperatures (250 °C: PP250, 500 °C: PP500 and 750 °C: PP750) using slow pyrolysis for 1 h and used for the phenol removal from an aqueous medium. Biochar samples were characterized by SEM, XRD and FT-IR. The phenol removal was examined as a function of pH, temperature, and NaCl and urea concentration. The optimum pH and temperature were found to be 6.0 and 25 °C respectively. Presence of NaCl and urea primarily affected the adsorption capacity of PP250 and slightly affected the adsorption potential of PP500 and PP750. The maximum biosorption capacity for the PP250, PP500 and PP750 were found to be 34.63, 46.70, and 60.10 mg/g respectively. The Langmuir isotherm and Pseudo-second order kinetic model best explained the adsorption. Thermodynamic parameters corroborated the physical and exothermic nature of adsorption. PP750 can preferably be used for phenol removal than PP500 and PP250.

show abstract

Statistical evaluation of cow-dung derived activated biochar for phenol adsorption: Adsorption isotherms, kinetics, and thermodynamic studies

Cited by 95 publications

References 37 publications

Co-Utilization of Sewage Sludge and Rice Husk in Ceramsite Preparation with Selective Adsorption Capacity to Pb

Co-Utilization of Sewage Sludge and Rice Husk in Ceramsite Preparation with Selective Adsorption Capacity to Pb

Hydrochar and Humic Acid as Template of ZnAl Layered Double Hydroxide for Adsorption of Phenol

A Comparative Study of Phenol Removal by Pisum‐sativum Peels Biochars Derived at Different Pyrolysis Temperatures: Isotherm, Kinetic and Thermodynamic Modelling

Contact Info

Product

Resources

About