Effects of sludge thermal-alkaline pretreatment on cationic red X-GRL adsorption onto pyrolysis biochar of sewage sludge

Xiao, Benyi; Dai, Qing; Yu, Xiao; Yu, Panfen; Zhai, Shimin; Liu, Rongzhan; Guo, Xuesong; Liu, Junxin; Chen, Hong

doi:10.1016/j.jhazmat.2017.10.001

Cited by 82 publications

(17 citation statements)

References 38 publications

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“…where q t (mg/g) is the adsorption capability at time t, t (min) is the adsorption time, K 1 (/min), K 2 (/min) and K i (mg/(g•min 0.5 )) are the pseudo-first order, pseudo-second order and intra-particle diffusion adsorption rate constants, C (mg/g) is the intercept of intra-particle diffusion adsorption, α (mg/(g•min)) and β (g/mg) are the initial adsorption coefficient and the desorption coefficient of Elovich model. It could be seen that the correlation coefficient (R 2 ) of the pseudo-second order model was highest and higher than 0.999, indicating the adsorption of X-GRRL onto LSC and SLS fitted the pseudo-second order kinetic model well [38]. Furthermore, the calculated q e by pseudo-second order kinetic model was much closer to the experimentally determined q e .…”

Section: Kinetics Studiessupporting

confidence: 53%

Comparative Study of Cationic Dye Adsorption Using Industrial Latex Sludge with Sulfonate and Pyrolysis Treatment

et al. 2020

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Industrial latex sludge as raw material was made into sulfonated latex sludge (SLS) and latex sludge active carbon (LSC) adsorbents by sulfonate and pyrolysis treatment to remove textile dye cationic blue X-GRRL from aqueous solution. The adsorption properties of SLS and LSC for X-GRRL were studied and compared by investigating the experimental parameters such as adsorbents dosage, pH, contact time and initial concentration. The kinetics of adsorption on SLS and LSC followed the pseudo-second-order kinetic model well. The adsorption isotherm and thermodynamic studies were further used to evaluate and compare the adsorption process of X-GRRL on SLS and LSC. The maximum adsorption capacities were 1219.6 mg/g for SLS and 476.2 mg/g for LSC according to the Langmuir model, respectively. These findings not only provide a sustainable strategy to turn industrial solid waste latex sludge into useful material for environment remediation, but also develop an efficient adsorbent for the treatment of dye wastewater.

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Section: Kinetics Studiessupporting

confidence: 53%

Comparative Study of Cationic Dye Adsorption Using Industrial Latex Sludge with Sulfonate and Pyrolysis Treatment

et al. 2020

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“…2) showed the intense bonds at ~ 3400 1/cm (O-H stretching vibration), which can be allocated to hydroxyl functional groups [32]. The absorbance bonds at ~ 2900 1/cm, ~ 1640 1/cm, and ~ 1100 1/cm were assigned to vibration modes of C-H, aromatic CC and, COC= bonds, respectively [33,34]. Furthermore, the intense peak at 1037 1/cm (Si-OS-i stretching vibration) is due to high silica content of the biomasses and consequently the ash content of the biochars [35].…”

Section: Resultsmentioning

confidence: 96%

“…The following indices obtained from the integration of absorbance peak regions were utilized to evaluate the chemical properties of biochars, aromaticity, the degree of the aromatic ring, aliphatic chain length, oxygen function groups, and 'C' factor. The ratio of the C=O to CC= stretching group ('C' factor) was used as a criterion for describing oxygencontaining groups in samples [33,35].…”

Section: Resultsmentioning

confidence: 99%

Simultaneous biosorption of nickel and cadmium by the brown algae Cystoseria indica characterized by isotherm and kinetic models

et al. 2019

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Biosorption is an effective way of extracting heavy metal ions from aqueous solutions of various compositions. The brown algae, Cystoseria indica, when treated with sodium chloride, demonstrates significant capacity to extract cadmium and nickel, simultaneously, from aqueous solutions. The batch system was running over wide ranges of initial metal ion concentrations (5-150 mg/L), pH (2-6), adsorbent mass (1-4 g/L), and contact times (20-300 min), at a temperature of 25 °C. The results obtained when applying the system in these conditions exhibit higher removal capacities for cadmium than nickel. The optimal conditions of the biosorption process were found as the adsorbent mass of 1 g/L, initial concentration of adsorbates of 100 mg/L and pH of 6. The equilibrium data obtained are better described by the extended-Freundlich isotherm for nickel and cadmium. The maximum biosorption of nickel and cadmium in binary-metal-component system were 18.17 and 55.34 mg/g, respectively. The kinetic data derived from these experiments were evaluated with pseudo-first-order, pseudo-second-order and intra-particle-diffusion kinetic models. Kinetic examination of the equilibrium data derived from these models suggest that the adsorption of nickel and cadmium both follow the intra-particle-diffusion kinetic model.

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“…The discharged solid (mainly recalcitrant ber and mineral salt with less odour) is preferable for the usage in compost 24 and biochar. 25 3.2 Anaerobic digestion of the effluent supernatant for methane production…”

Section: Resultsmentioning

confidence: 99%

Dissolving organic matter from low-organic sewage sludge for shortening the anaerobic digestion time

Huang

et al. 2018

RSC Adv.

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Effects of sludge thermal-alkaline pretreatment on cationic red X-GRL adsorption onto pyrolysis biochar of sewage sludge

Cited by 82 publications

References 38 publications

Comparative Study of Cationic Dye Adsorption Using Industrial Latex Sludge with Sulfonate and Pyrolysis Treatment

Comparative Study of Cationic Dye Adsorption Using Industrial Latex Sludge with Sulfonate and Pyrolysis Treatment

Simultaneous biosorption of nickel and cadmium by the brown algae Cystoseria indica characterized by isotherm and kinetic models

Dissolving organic matter from low-organic sewage sludge for shortening the anaerobic digestion time

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