High-efficiency adsorption of tetracycline by the prepared waste collagen fiber-derived porous biochar

Wei, Xinxing; Zhang, Renjing; Zhang, Wenchao; Yuan, Yue; Lai, Bo

doi:10.1039/c9ra07289f

Cited by 48 publications

(21 citation statements)

References 56 publications

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“…As such, CF is expected to be processed into a type of FRA for NR. Moreover, CF is a renewable biomass resource [35][36][37][38]. Our previous study also proved that blending with CF does not impair the mechanical properties of NR [39].…”

Section: Introductionsupporting

confidence: 59%

Effects of collagen fiber addition on the combustion and thermal stability of natural rubber

Wen

et al. 2020

J Leather Sci Eng

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Collagen fiber (CF) and silane coupling agent-modified collagen fiber (MCF) were used as flame retardant filler for natural rubber (NR) modification. The combustion phenomena and properties of composites blended with different dosages of CF or MCF were compared to elucidate the flame retardant mechanism of the composites. The flame retardancy of NR can be enhanced effectively by increasing nitrogen content (the nitrogen content of CF is about 18%), creating air pockets, and structuring the flame retardant network in the composites. MCF failed to structure a flame retardant network in the composite, indicating that its modification effects of MCF are weaker than those of CF. When CF dosage was 30 wt%, the composite can achieve the best flame retardancy, with limited oxygen index of 29.4% and without smoke and dripping during burning. This study demonstrated a new method for the flame retardant modification of NR. Graphical abstract

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Section: Introductionsupporting

confidence: 59%

Effects of collagen fiber addition on the combustion and thermal stability of natural rubber

Wen

et al. 2020

J Leather Sci Eng

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“…The Barrett–Joyner–Halenda (BJH) average pore diameter of Fe(III)@CNFs was 5.44 nm, which was smaller than that of the original CNFs. According to a study, the molecular diameter of TC is 1.27 nm [ 57 ]; thus, TC can permeate the pore interior of adsorbents with a sufficient pore size. The key factor affecting adsorption may be the relationship between Fe(III) and TCs.…”

Section: Resultsmentioning

confidence: 99%

“…The adsorption performance of TC, CTC and OTC sharply decreased when pH exceeded 11, 10 and 10, respectively. These results can be explained by the surface charge of the adsorbent and the influence of initial pH on the existing form of the adsorbate [ 57 ]. Further details are presented in §3.7.…”

Section: Resultsmentioning

confidence: 99%

“…Coexisting ions affect the adsorption of organic matter through the ‘salting out’ and ‘squeeze out’ effects [ 57 ]. Actual wastewater has different concentrations and types of coexisting ions, and their presence may interfere with TCs adsorption.…”

Section: Resultsmentioning

confidence: 99%

“…The Morris–Weber intra-particle diffusion model was employed to explore the actual rate-limiting step [ 57 ] ( figure 7 d ). Before the adsorption equilibrium, q t and t 1/2 presented two linearities.…”

Section: Resultsmentioning

confidence: 99%

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Effective removal of tetracycline antibiotics from wastewater using practically applicable iron(III)-loaded cellulose nanofibres

et al. 2021

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The non-toxic and completely biodegradable cellulose within bamboo is one of the most abundant agricultural polysaccharide wastes worldwide, and can be processed into cellulose nanofibres (CNFs). Iron(III)-loaded CNFs (Fe(III)@CNFs) derived from bamboo were prepared to improve the adsorption of tetracycline (TC), chlortetracycline (CTC) and oxytetracycline (OTC) from an aqueous solution. The preparation conditions of Fe(III)@CNFs suitable for the simultaneous adsorption of three tetracycline antibiotics (TCs) were investigated. Various analyses proved the abundance of oxygen-containing functional groups and the existence of Fe(III) active metal sites in Fe(III)@CNFs. In batch experiments, Fe(III)@CNFs were applied under a wide pH range and the maximum adsorption capacities were 294.12, 232.56 and 500.00 mg g −1 (for TC, CTC and OTC, respectively). In addition, different concentrations and types of coexisting anions have a weak effect on TCs adsorption. The original TCs adsorption capacities of Fe(III)@CNFs remained stable (greater than 92%) after five cycles when UV + H 2 O 2 was used as the regeneration method. Four adsorption mechanisms (surface complexation, hydrogen bonding, electrostatic interaction and van der Waals force) were obtained for the endothermic adsorption of TCs, among which surface complexation between Fe(III) and TCs always dominates. The practically applicable Fe(III)@CNFs adsorbents are promising for TCs enrichment and remediation in engineering applications.

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Collagen Fiber‐Based Advanced Separation Materials: Recent Developments and Future Perspectives

et al. 2022

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Separation plays a critical role in a broad range of industrial applications. Developing advanced separation materials is of great significance for the future development of separation technology. Collagen fibers (CFs), the typical structural proteins, exhibit unique structural hierarchy, amphiphilic wettability, and versatile chemical reactivity. These distinctive properties provide infinite possibilities for the rational design of advanced separation materials. During the past 2 decades, many progressive achievements in the development of CFs‐derived advanced separation materials have been witnessed already. Herein, the CFs‐based separation materials are focused on and the recent progresses in this topic are reviewed. CFs widely existing in animal skins display unique hierarchically fibrous structure, amphiphilicity‐enabled surface wetting behaviors, multi‐functionality guaranteed covalent/non‐covalent reaction versatility. These outstanding merits of CFs bring great opportunities for realizing rational design of a variety of advanced separation materials that were capable of achieving high‐performance separations to diverse specific targets, including oily pollutants, natural products, metal ions, anionic contaminants and proteins, etc. Besides, the important issues for the further development of CFs‐based advanced separation materials are also discussed.

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High-efficiency adsorption of tetracycline by the prepared waste collagen fiber-derived porous biochar

Abstract: Porous biochar (PBC) derived from Cr-containing waste collagen fibers was prepared by two-step pyrolysis to 800 °C (PBC-800) and alkali activation.

Cited by 48 publications

References 56 publications

Effects of collagen fiber addition on the combustion and thermal stability of natural rubber

Effects of collagen fiber addition on the combustion and thermal stability of natural rubber

Effective removal of tetracycline antibiotics from wastewater using practically applicable iron(III)-loaded cellulose nanofibres

Collagen Fiber‐Based Advanced Separation Materials: Recent Developments and Future Perspectives

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