Loofah activated carbon with hierarchical structures for high-efficiency adsorption of multi-level antibiotic pollutants

Wang, Zhe; Wang, Guangjin; Li, Wenyao; Cui, Zhe; Wu, Jianghong; Akpınar, Işıl; Yu, Li; He, Guanjie; Hu, Junqing

doi:10.1016/j.apsusc.2021.149313

Cited by 47 publications

(13 citation statements)

References 69 publications

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“…Several conventional techniques were used to reduce toxic dye compounds in wastewater, including separation [ 2 ], reverse osmosis, precipitation, ion exchange method, and ultra-filtration adsorption on activated carbon [ 3 ]. The greater disadvantage of these techniques is the formation of secondary waste that cannot be reprocessed.…”

Section: Introductionmentioning

confidence: 99%

Sulfonated Pentablock Copolymer Coating of Polypropylene Filters for Dye and Metal Ions Effective Removal by Integrated Adsorption and Filtration Process

Filice

Scuderi

Libertino

et al. 2022

IJMS

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In this work, we coated polypropylene (PP) fibrous filters with sulfonated pentablock copolymer (s-PBC) layers and tested them for the removal of cationic organic dyes, such as methylene blue (MB), and heavy metal ions (Fe3+ and Co2+) from water by adsorption and filtration experiments. Some of the coated filters were irradiated by UV light before being exposed to contaminated water and then were tested with unirradiated filters in the same adsorption and filtration experiments. Polymer-coated filters showed high efficiency in removing MB from an aqueous solution in both absorption and filtration processes, with 90% and 80% removal, respectively. On the other hand, for heavy metal ions (Fe3+ and Co2+), the coated filters showed a better removal performance in the filtration process than for the adsorption one. In fact, in the adsorption process, controlled interaction times allow the ionic species to interact with the surface of the filters leading to the formation and release of new species in solution. During filtration, the ionic species are easily trapped in the filters, in particular by UV modified filters, and we observed for Fe3+ ions a total removal (>99%) in a single filtration process and for Co2+ ions a larger removal with respect to the untreated filter. The mechanisms involved in the removal of the contaminants processes were investigated by characterizing the filters before and after use by means of scanning electron microscopy (SEM) combined with energy-dispersive X-ray (EDX) analysis and Fourier transform infrared spectroscopy (FT-IR).

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Section: Introductionmentioning

confidence: 99%

Sulfonated Pentablock Copolymer Coating of Polypropylene Filters for Dye and Metal Ions Effective Removal by Integrated Adsorption and Filtration Process

Filice

Scuderi

Libertino

et al. 2022

IJMS

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“…Loofah sponge (LS) fibers are derived from the fully matured fruit of loofah and are extremely low-cost, environment-friendly, readily available, sustainable, and renewable biomass materials in China, South East Asia, and so forth. , They demonstrate many excellent properties such as flexibility, a natural 3D microporous structure, and outstanding adsorption capacity, , due to which they have been employed in various fields including carbon dioxide capture, adsorption of antibiotic contaminants, and desalination of seawater . In parallel, our pioneer work also investigated freeze-drying and carbonization of fresh loofah to obtain a 3D lamellar porous materials as a substrate for encapsulating PEG.…”

Section: Introductionmentioning

confidence: 99%

Fabrication and Performance of Shape-Stable Phase Change Composites Supported by Environment-Friendly and Economical Loofah Sponge Fibers for Thermal Energy Storage

Song

Wang

et al. 2022

Energy Fuels

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Exploration of low-cost, short-process, environment-friendly, and well-behaved phase change composites is of great significance. The renewable biomass loofah sponge (LS) fibers exhibit superior characteristics such as unique microtubules, substantial micrometer-scale channels, and exceptionally high porosities and have great potential of being utilized to exploit high-performance phase change composites. Herein, we proposed a facile strategy for fabricating a novel shape-stable phase change composite (PCLS) supported by LS fiber microtubules incorporating polyethylene glycol (PEG). The LS fibers with a porous tubular structure provided superior encapsulation and mechanical support for PEG. Encapsulation capacity of LS fibers for PEG was not affected by the duration of vacuum impregnation but increased with the increase in PEG concentration (lower than 0.24 g/mL) and then tended to the maximum of ∼56.5%. Differential scanning calorimetry results showed that the resultant PCLS had a melting/crystallization temperature of 41.7/32.3 °C and a heat enthalpy of 98.9/86.1 J/g, which contributed to great thermal energy storage/retrieval capability. The fabricated PCLS also featured excellent thermal cycling reliability for long-term use. Thermogravimetric analysis results suggested that there were two steps of degradation process for the resultant PCLS and corresponded to the decomposition of PEG and LS fibers, respectively. Infrared thermal images demonstrated that the resultant PCLS showed good infrared stealth ability and could effectively reduce infrared heat radiation. Self-assembly temperature control performance measurement indicated that the fabricated PCLS displayed superior temperature regulation ability. Such innovative PCLS holds great promise for widespread applications in solar thermal-energy storage, thermal regulation, thermal insulation, and thermal camouflage and stealth.

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“…By contrast, adsorption is considered to be promising in water treatment. Several kinds of adsorbents have been used to adsorb OFX from water, including clay [11][12][13], activated carbon [8,[14][15][16][17][18][19], carbon nanotubes [20][21][22][23], graphene oxide [24][25][26][27], and biochar [28][29][30]. However, most of these still present the problem of low adsorption capacity.…”

Section: Introductionmentioning

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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Loofah activated carbon with hierarchical structures for high-efficiency adsorption of multi-level antibiotic pollutants

Cited by 47 publications

References 69 publications

Sulfonated Pentablock Copolymer Coating of Polypropylene Filters for Dye and Metal Ions Effective Removal by Integrated Adsorption and Filtration Process

Sulfonated Pentablock Copolymer Coating of Polypropylene Filters for Dye and Metal Ions Effective Removal by Integrated Adsorption and Filtration Process

Fabrication and Performance of Shape-Stable Phase Change Composites Supported by Environment-Friendly and Economical Loofah Sponge Fibers for Thermal Energy Storage

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

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