In situ synthesis of FeS/Carbon fibers for the effective removal of Cr(VI) in aqueous solution

Zhang, Rongrong; Li, Daohao; Sun, Jutang; Cui, Yuqian; Sun, Yuanyuan

doi:10.1007/s11783-020-1247-8

Cited by 32 publications

(4 citation statements)

References 33 publications

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“…Cai et al [33] investigated the synergy between cobalt and nickel on NiCo 2 O 4 nanosheets that promotes peroxymonosulfate activation for efficient degradation of norfloxacin. Zhang et al [34] studied the in situ synthesis of FeS/carbon fibers for the effective removal of Cr(VI) in aqueous solutions. The results showed the removal of 81.62% mg/g of chromium (VI).…”

Section: Introductionmentioning

confidence: 99%

Performance Enhancement of Specific Adsorbents for Hardness Reduction of Drinking Water and Groundwater

Ghanbarizadeh

Parivazh

Abbasi

et al. 2022

Water

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One of the most advantageous methods for lowering water hardness is the use of low-cost adsorbents. In this research, the effectiveness of natural zeolite (clinoptilolite type), activated carbon, and activated alumina was evaluated. These adsorbents were sequentially modified by NaCl, HCl, and NaCl-HCL to improve their ability to adsorb. The contact time and the amount of adsorbent used in the adsorption process were investigated experimentally to determine their effects. The results indicated that the best contact time for hardness reduction was 90 min, and the best concentrations of adsorbents in drinking water for zeolite, activated carbon, and activated alumina were 40, 60, and 60 g/L, respectively. In addition, for groundwater, these figures were 60, 40, and 40 g/L, respectively. The greatest possible decreases in total hardness under the best conditions by natural zeolite, activated carbon, and activated alumina adsorbents were 93.07%, 30.76%, and 56.92%, respectively, for drinking water and 59.23%, 15.67 %, and 39.72% for groundwater. According to the results obtained from experiments, NaCl-modified zeolite, natural zeolite, and NaCl-HCl-modified activated carbon performed better in terms of parameter reduction. The equilibrium data were well fitted by the Langmuir isotherm model, whereas the kinetic data for the adsorption process were consistent with the pseudo-second-order model. The equilibrium study of the adsorption process by the Morris–Weber model revealed that both chemical and physical adsorption are involved.

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Section: Introductionmentioning

confidence: 99%

Performance Enhancement of Specific Adsorbents for Hardness Reduction of Drinking Water and Groundwater

Ghanbarizadeh

Parivazh

Abbasi

et al. 2022

Water

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“… 23 Finally, the combined action of several free radicals completes the degradation of TCH (16) . 65,66 Fe 3+ + HSO 5 − → Fe 2+ + SO 5 − ˙ + H + Fe 2+ + HSO 5 − → Fe 3+ + SO 4 − ˙ + OH − Fe 2+ + O 2 → Fe 3+ + ˙O 2 − SO 4 − ˙ + H 2 O → SO 4 2− + ˙OH + H + 2˙O 2 − + H 2 O → H 2 O 2 + OH − + 1 O 2 ˙O 2 − + ˙OH + 2H + → 1 O 2 + OH − SO 5 − ˙ + SO 5 − ˙ → S 2 O 8 2− + 1 O 2 SO 5 − ˙ + SO 5 − ˙ → SO 4 2− + 1 O 2 TCH + SO 4 − ˙ + ˙OH + ˙O 2 − + 1 O 2 → intermediates + CO 2 + H 2 O …”

Section: Resultsmentioning

confidence: 99%

Peroxymonosulfate activation by tea residue biochar loaded with Fe₃O₄ for the degradation of tetracycline hydrochloride: performance and reaction mechanism

Wang

Shi

et al. 2021

RSC Adv.

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“…Kinetic models are used to determine the temporal effect of the adsorption process. They present information on the change in the experimental system over time, characterize the rate of adsorption uptake and binding at the solid-solution interface or during the sorption reaction [102][103][104]. In this study, pseudo-I-order (Lagergen) and pseudo-II-order (Ho and McKay) kinetic models were calculated when the initial concentration of Cd 2+ was changed (between 11-157 mg/L).…”

Section: Adsorption Isotherms Kinetic and Diffusion Modelsmentioning

confidence: 99%

Effectiveness and Characterization of Novel Mineral Clay in Cd2+ Adsorption Process: Linear and Non-Linear Isotherm Regression Analysis

Tonk

Aradi

Kovács

et al. 2022

Water

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The excellent adsorption properties of clay minerals make the optimization of heavy metal removal the subject of numerous research projects. In the present study, ASLAVITAL cosmetic clay (ACC) powder was applied for the removal of Cd2+ from water. The main deposit of ACC clay is the Pădurea Craiului Mountains in Romania. A wide range of morpho-structural approaches (SEM, EDX, FTIR, Raman, XRD) were used to characterize the morphology and elemental composition of the adsorbent. As expected for clay minerals, Al (wt(%) = 11.4 ± 0.9) and Si (wt(%) = 13.7 ± 1.4) are the main constituents of ACC. After adsorption, wt(%) = 0.2 ± 0.01 Cd2+ was detected in the sample. As proved before, the initial metal concentration is the primary influencing factor; therefore, batch adsorption of 10–160 mg/L Cd2+ was investigated. After 190 min, an efficiency of 99% was reached, and the quantity in equilibrium increased from 1–8 mg/g. The best fit in linear form was obtained for the Langmuir II. model, where R2 = 0.954 (RL = 0.037–0.027). Based on linear isotherm models, physical bonds formed between ACC and Cd2+ during the favorable adsorption. For the non-linear fits, the Liu model proved to be the best R2 = 0.965, χ2 = 1.101. Pseudo-II-order kinetic model described the experimental data R2 = 0.988–0.999; qexp and qcalc were almost identical (the differences ranged 0.03–0.34).

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In situ synthesis of FeS/Carbon fibers for the effective removal of Cr(VI) in aqueous solution

Cited by 32 publications

References 33 publications

Performance Enhancement of Specific Adsorbents for Hardness Reduction of Drinking Water and Groundwater

Performance Enhancement of Specific Adsorbents for Hardness Reduction of Drinking Water and Groundwater

Peroxymonosulfate activation by tea residue biochar loaded with Fe₃O₄ for the degradation of tetracycline hydrochloride: performance and reaction mechanism

Effectiveness and Characterization of Novel Mineral Clay in Cd2+ Adsorption Process: Linear and Non-Linear Isotherm Regression Analysis

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In situ synthesis of FeS/Carbon fibers for the effective removal of Cr(VI) in aqueous solution

Cited by 32 publications

References 33 publications

Performance Enhancement of Specific Adsorbents for Hardness Reduction of Drinking Water and Groundwater

Performance Enhancement of Specific Adsorbents for Hardness Reduction of Drinking Water and Groundwater

Peroxymonosulfate activation by tea residue biochar loaded with Fe3O4 for the degradation of tetracycline hydrochloride: performance and reaction mechanism

Effectiveness and Characterization of Novel Mineral Clay in Cd2+ Adsorption Process: Linear and Non-Linear Isotherm Regression Analysis

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Peroxymonosulfate activation by tea residue biochar loaded with Fe₃O₄ for the degradation of tetracycline hydrochloride: performance and reaction mechanism