Iron/zinc and phosphoric acid modified sludge biochar as an efficient adsorbent for fluoroquinolones antibiotics removal

Ma, Yongfei; Li, Ping; Yang, Lie; Wu, Li; He, Liuyang; Gao, Feng; Qi, Xuebin; Zhang, Zulin

doi:10.1016/j.ecoenv.2020.110550

Cited by 118 publications

(19 citation statements)

References 59 publications

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“…Post-treatment of biochar produced from rice husk with methanol in acidic conditions increased carboxyl groups, which improved the adsorption of tetracycline . Metal and metal oxides have been used to promote biochar adsorption capacity for antibiotics. − Xiang et al used the coprecipitation method to introduce Fe and Mn to vinasse waste, and the biochar was obtained from the Fe/Mn vinasse waste. The resulting biochar exhibited high pefloxacin and ciprofloxacin adsorption capacity (maximum 270 and 135 mg/g, respectively) .…”

Section: Environmental Applications Of Biocharmentioning

confidence: 99%

Perspectives of Engineered Biochar for Environmental Applications: A Review

2022

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Research on using biochar for environmental applications has witnessed unprecedented advances in the past decade. Biochar is universally considered one of the best alternatives to store carbon to fight global warming. Thus, the sequential use of biochar in environmental remediation compatible with carbon sequestration is receiving growing attention. One of the reasons for such huge interest is the possibility to engineer biochar with targeted properties (e.g., surface area and chemistry) relevant to existing environmental issues. These properties can be achieved by selecting appropriate raw materials, processing conditions, carbonization technology, and the possibility of selecting postproduction modification approaches. The objective of this review is to summarize strategies to enhance biochar properties relevant to its use in environmental services (e.g., water purification, air/gas cleaning, construction materials, soil amendments) and the corresponding results on the use of this material for these applications. The main methods for enhancing biochar properties for environmental applications reviewed include activation (physical and chemical), oxidation, metal and metal oxide modification, metal-free heteroatom doping, and biological modification. Both modified and unmodified biochars have been used for soil amendments as adsorbents of pollutants in the aqueous phase (e.g., removal of P and N, heavy metals, and organic pollutants), adsorbents of pollutants in the gas phase (e.g., biogas cleaning), as a catalyst, as an additive for improving anaerobic digestion, and as an admixture to cementitious/construction materials, with promising results in all cases. New opportunities for using biochar are being reported as the science of biochar production, modification, and use advances.

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Section: Environmental Applications Of Biocharmentioning

confidence: 99%

Perspectives of Engineered Biochar for Environmental Applications: A Review

2022

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“…The maximum adsorption capacity reached 599.96 mg•g −1 , which was 4.2 times that of ZIF-8 (142.74 mg•g −1 ). More importantly, the adsorption capacity of Cu-ZIF-8-1 was higher than that in most of the reported materials, as shown in Table S4 [11,16,[40][41][42][43][44][45][46][47][48][49][50][51][52][53][54][55]. To further study the adsorption behavior, the Langmuir model and Freundlich model were used to fit the adsorption isotherms: Langmuir isotherm model:…”

Section: Adsorption Isothermsmentioning

confidence: 99%

Highly Effective Removal of Ofloxacin from Water with Copper-Doped ZIF-8

et al. 2022

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Residual antibiotics in wastewater have gained widespread attention because of their toxicity to humans and the environment. In this work, Cu-doped ZIF-8s (Cu-ZIF-8s) were successfully synthesized by the impregnation of Cu2+ in ZIF-8 and applied in the removal of ofloxacin (OFX) from water. Remarkably, excellent adsorption performance was obtained in Cu-ZIF-8s, especially for Cu-ZIF-8-1, in which the adsorption capacity (599.96 mg·g−1) was 4.2 times higher than that of ZIF-8 and superior to various adsorbents reported previously. The adsorption kinetics and adsorption isotherm follow the pseudo-second-order model and the Langmuir model, respectively. Furthermore, the removal efficiencies of OFX in Cu-ZIF-8-1 reached over 90% at low concentrations. It was revealed that electrostatic interaction and complexation play important roles in the adsorption process. In addition, the material can be regenerated by simple methods. Therefore, the obtained Cu-doped MOFs may have a promising application in the treatment of antibiotic-containing wastewater.

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“…Thermodynamics studies can demonstrate the adsorption process of MOX and OFX on Met-GO/SA in terms of energy change. The temperature influence on the adsorption of FQ and the thermodynamic parameters were determined by the adsorption experiments at different temperatures from 35 to 55 • C. The Gibbs free energy (∆G • ), entropy (∆S • ) and enthalpy (∆H • ) for the adsorption system were calculated using Equations ( 11)-( 13) [66] and the results are shown in Table 5.…”

Section: Adsorption Thermodynamics Studiesmentioning

confidence: 99%

Methionine-Functionalized Graphene Oxide/Sodium Alginate Bio-Polymer Nanocomposite Hydrogel Beads: Synthesis, Isotherm and Kinetic Studies for an Adsorptive Removal of Fluoroquinolone Antibiotics

Yadav¹,

Asthana²,

Singh³

et al. 2021

Nanomaterials

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In spite of the growing demand for new antibiotics, in the recent years, the occurrence of fluoroquinolone antibiotics (as a curative agent for urinary tract disorders and respiratory problems) in wastewater have drawn immense attention. Traces of antibiotic left-overs are present in the water system, causing noxious impact on human health and ecological environments, being a global concern. Our present work aims at tackling the major challenge of toxicity caused by antibiotics. This study deals with the efficient adsorption of two commonly used fluoroquinolone (FQ) antibiotics, i.e., Ofloxacin (OFX) and Moxifloxacin (MOX) on spherical hydrogel beads generated from methionine‒functionalized graphene oxide/ sodium alginate polymer (abbreviated Met-GO/SA) from aqueous solutions. The composition, morphology and crystal phase of prepared adsorbents were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), Fourier transform infrared spectroscopy (FTIR), high-resolution transmission electron microscopy (HR-TEM) and thermogravimetric analysis/differential thermogravimetry (TGA/DTG). Batch adsorption tests are followed to optimize the conditions required for adsorption process. Both functionalized and non-functionalized adsorbents were compared to understand the influence of several experimental parameters, such as, the solution pH, contact time, adsorbent dosage, temperature and initial concentration of OFX and MOX on adsorption. The obtained results indicated that the functionalized adsorbent (Met-GO/SA) showed a better adsorption efficiency when compared to non-functionalized (GO/SA) adsorbent. Further, the Langmuir isotherm was validated as the best fitting model to describe adsorption equilibrium and pseudo second-order-kinetic model fitted well for both types of adsorbate. The maximum adsorption capacities of Met-GO/SA were 4.11 mg/g for MOX and 3.43 mg/g for OFX. Thermodynamic parameters, i.e., ∆G°, ∆H° and ∆S° were also calculated. It was shown that the overall adsorption process was thermodynamically favorable, spontaneous and exothermic in nature. The adsorbents were successfully regenerated up to four cycles with 0.005 M NaCl solutions. Overall, our work showed that the novel Met-GO/SA nanocomposite could better contribute to the removal of MOX and OFX from the liquid media. The gel beads prepared have adequate features, such as simple handling, eco-friendliness and easy recovery. Hence, polymer gel beads are promising candidates as adsorbents for large-scale water remediation.

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Iron/zinc and phosphoric acid modified sludge biochar as an efficient adsorbent for fluoroquinolones antibiotics removal

Cited by 118 publications

References 59 publications

Perspectives of Engineered Biochar for Environmental Applications: A Review

Perspectives of Engineered Biochar for Environmental Applications: A Review

Highly Effective Removal of Ofloxacin from Water with Copper-Doped ZIF-8

Methionine-Functionalized Graphene Oxide/Sodium Alginate Bio-Polymer Nanocomposite Hydrogel Beads: Synthesis, Isotherm and Kinetic Studies for an Adsorptive Removal of Fluoroquinolone Antibiotics

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