Fe/S modified sludge-based biochar for tetracycline removal from water

Ma, Jinxing; Zhou, Baiqin; Zhang, Hong; Zhang, Wenbo

doi:10.1016/j.powtec.2019.10.107

Cited by 72 publications

(14 citation statements)

References 58 publications

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“…The band at 592 cm −1 resulted from FeO vibration of bulk Fe 3 O 4 (Hung et al, 2020). However, the FeS bond at 1584.7 and 453.1 cm −1 were only observed in l ‐cys@nFe 3 O 4 particles (Ma et al, 2020). Consequently, l ‐cys was combined on the surface of nFe 3 O 4 , and FeS bond generated as well.…”

Section: Resultsmentioning

confidence: 99%

l‐cysteine‐modified Fe₃O₄ nanoparticles as a novel heterogeneous catalyst for persulfate activation on BTEX removal

Sun

Lyu

2021

Water Environment Research

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l‐cysteine‐modified Fe3O4 nanoparticles (l‐cys@nFe3O4) were synthesized successfully and used as catalyst to activate persulfate (PS) for benzene, toluene, ethylbenzene, and xylenes (BTEX) degradation. The composite was fully characterized, and the l‐cys@nFe3O4 had more protrusions and l‐cys was combined on the surface of nFe3O4. The removals of BTEX were 78.2%, 85.1%, 85.3%, 81.2%, respectively, in PS/l‐cys@nFe3O4 system, while only 52.7% 57.8%, 60.8%, and 56.3% of BTEX removals reached under the same condition for nFe3O4 chelated with l‐cys in 48 h. Four successive cycles of BTEX degradation were completed in PS/l‐cys@nFe3O4 system. The synergistic mechanisms of BTEX degradation in PS/l‐cys@nFe3O4 system were investigated by electron paramagnetic resonance (EPR), benzoic acid (BA) probe and X‐ray photoelectron spectroscopy (XPS) tests. SFe bond in l‐cys‐Fe complexes promoted the electron transfer between nFe3O4 core and the solution, iron and iron at the interface, thereby promoting the Fe3+/Fe2+ cycle and the catalytic capacity of nFe3O4. The optimal pH of PS/l‐cys@nFe3O4 system was 3, while HCO3− and Cl− exhibited negative influences on BTEX degradation. Only 14.2%, 15.5%, 15.9%, and 15.6% BTEX had been removed in the presence of 0.12‐M PS and 8.0 g/L l‐cys@nFe3O4 under the actual groundwater condition. However, expanding the dosage of PS and l‐cys@nFe3O4 was an effective strategy to overcome the adverse effect. Practitioner Points L‐cys@nFe3O4 were synthesized successfully and used as catalyst to activate PS for BTEX degradation. Four successive cycles of BTEX degradation were completed in PS/L‐cys@nFe3O4 system. lS―Fe bond in L‐cys@nFe3O4 promoted the electron transfer between PS and nFe3O4 core.

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Section: Resultsmentioning

confidence: 99%

l‐cysteine‐modified Fe₃O₄ nanoparticles as a novel heterogeneous catalyst for persulfate activation on BTEX removal

Sun

Lyu

2021

Water Environment Research

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“…7a), the Freundlich model was better due to the tting correlation coe cient of R 2 was 0.99, which was much higher than that of derived from Langmuir model (R 2 =0.77). This indicated that the adsorption of TC onto S500 was mainly multi-molecule heterogeneous adsorption (Ma et al 2020), which may be related to coexisting adsorption mechanisms including the π-π interaction between S500 and TC (Chen et al 2007;Chen et al 2021). Furthermore, the value of 1/n was greater than 1, expounding the competition between adsorption sites increased with the equilibrium concentration increasing (Li et al 2020).…”

Section: Adsorption Isothermsmentioning

confidence: 96%

Pyrolysis of municipal sludge without gas protection and its adsorption performance toward tetracycline: Effect of pyrolysis temperature and KOH activation

Chen

et al. 2022

Preprint

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Large amount of municipal sludge is difficulty to handle, its resource utilization is an effective measure. In this study, the municipal sludge from sewage treatment plant was pyrolyzed without nitrogen protection at different temperatures and KOH concentrations for activation. The pyrolysis products with higher surface aera and enriched pore structures could be obtained at the pyrolysis temperature of 500 ℃, and KOH activation could further increase the surface aera of the products. The maximum specific surface area was 44.71 m2/g, which was obtained under 2 mol/L KOH activation before pyrolysis at 500 ℃. And in this situation, the obtained pyrolysis products showed the maximum adsorption capacity of 50.75 mg/g toward tetracycline (TC). Moreover, the TC adsorption onto various pyrolysis products followed the pseudo-second-order kinetic model. Adsorption thermodynamics analysis suggested the TC adsorption onto products obtained at pyrolysis temperature of 500 ℃ was mainly the multi-molecule heterogeneous adsorption, while the TC adsorption onto pyrolysis product pretreated through the activation of KOH followed the monomer adsorption mechanism. This different adsorption mechanism was largely related to the pore structure, polarity, and aromaticity etc. of the adsorbent.

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“…113 Further modication with metal nanoparticles improves the pollutant removal efficiency of BCs. The improvement in TC adsorption capacity was noted for metal-BCs such as activated municipal waste sludge biochar with Fe-Cu BNPs (AWSB/Fe/Cu) composite (386.93 mg g À1 ), 114 chitosan-Fe/S-modied biochar (BCFe-S) (150.97 mg g À1 ), biochar-clay composite (78 mg g À1 ), 115 spent coffee ground biochar doped with cobalt NPs (Co-SCG) (370.37 mg g À1 ), 116 Fe/S-modied sludge-derived biochar (AWSB/Fe/S) (174.06 mg g À1 ), 117 Fe-impregnated chicken bonederived biochar (MCB) (98.89 mg g À1 ), 118 metal chloridetreated Fargesia biochar (HT-B) (123.6 mg g À1 ), 119 g-MoS 2coated rice straw-derived biochar (g-MoS 2 -BC) (249.45 mg g À1 ), 120 ZnCl 2 -treated biochar from aerobic granular sludge (Zn-BC) (93.44 mg g À1 ). 121 The inexpensive rice husk ash (RHA) from agricultural waste could remove 83.52% of TC with an initial TC concentration of 5 mg L À1 and temperature of 39.85 C. 122 Different types of adsorbents used for TC removal and their respective TC removal percentages are given in Table 3.…”

Section: Adsorption Processmentioning

confidence: 99%

A review on tetracycline removal from aqueous systems by advanced treatment techniques

et al. 2020

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Fe/S modified sludge-based biochar for tetracycline removal from water

Cited by 72 publications

References 58 publications

l‐cysteine‐modified Fe₃O₄ nanoparticles as a novel heterogeneous catalyst for persulfate activation on BTEX removal

l‐cysteine‐modified Fe₃O₄ nanoparticles as a novel heterogeneous catalyst for persulfate activation on BTEX removal

Pyrolysis of municipal sludge without gas protection and its adsorption performance toward tetracycline: Effect of pyrolysis temperature and KOH activation

A review on tetracycline removal from aqueous systems by advanced treatment techniques

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Fe/S modified sludge-based biochar for tetracycline removal from water

Cited by 72 publications

References 58 publications

l‐cysteine‐modified Fe3O4 nanoparticles as a novel heterogeneous catalyst for persulfate activation on BTEX removal

l‐cysteine‐modified Fe3O4 nanoparticles as a novel heterogeneous catalyst for persulfate activation on BTEX removal

Pyrolysis of municipal sludge without gas protection and its adsorption performance toward tetracycline: Effect of pyrolysis temperature and KOH activation

A review on tetracycline removal from aqueous systems by advanced treatment techniques

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Product

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l‐cysteine‐modified Fe₃O₄ nanoparticles as a novel heterogeneous catalyst for persulfate activation on BTEX removal

l‐cysteine‐modified Fe₃O₄ nanoparticles as a novel heterogeneous catalyst for persulfate activation on BTEX removal