Adsorption properties of heavy metals and antibiotics by chitosan from larvae and adult Trypoxylus dichotomus

Jiang, Qiushi; Han, Zhaolian; Li, Weiping; Ji, Tingxu; Yuan, Yafeng; Zhang, Junjie; Zhao, Chunli; Cheng, Zhiqiang; Wang, Song

doi:10.1016/j.carbpol.2021.118735

Cited by 15 publications

(8 citation statements)

References 69 publications

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“… 25 , 26 Chitosan involves numerous reactive amino groups and hydroxyl groups that can catch the heavy metal ions via electrostatic attraction, ion exchange, and chelation. 27 Moreover, the high functionality of chitosan enables different chemical modifications through grafting or crosslinking with other reactive groups such as sulfate and phosphate. 28 Chemical crosslinking of linear chains of Cs can be performed via crosslinking agents such as glutaraldehyde (GA) and epichlorohydrin (ECH) to form a triple network structure with enhanced mechanical properties and improved adsorption capacity.…”

Section: Introductionmentioning

confidence: 99%

“…Thus, the application of such adsorbents for the disposal of heavy metal ions at the commercial level is relatively difficult. Natural polymers, particularly polysaccharides, are highly favored materials due to their considerable resources, bio-degradability, high functionality, and respectable economic and ecological benefits besides their sustainability. − Chitosan (Cs) is an abundant naturalistic polysaccharide which has been widely investigated in the field of remediation of wastewater polluted with heavy metal ions and dyes. , Chitosan involves numerous reactive amino groups and hydroxyl groups that can catch the heavy metal ions via electrostatic attraction, ion exchange, and chelation . Moreover, the high functionality of chitosan enables different chemical modifications through grafting or crosslinking with other reactive groups such as sulfate and phosphate .…”

Section: Introductionmentioning

confidence: 99%

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Chitosan-Based Architectures as an Effective Approach for the Removal of Some Toxic Species from Aqueous Media

Abdel-Raouf

Farag

et al. 2023

ACS Omega

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Modified uncrosslinked and crosslinked chitosan derivatives were investigated as green sorbents for the removal of copper (Cu 2+ ) and lead (Pb 2+ ) cations from simulated solutions. In this regard, N, O carboxymethyl chitosan (N, O CMC), chitosan beads (Cs-g-GA), chitosan crosslinked with glutaraldehyde/methylene bisacrylamide (Cs/GA/MBA), and chitosan crosslinked with GA/epichlorohydrin (Cs/GA/ECH) were prepared and characterized by Fourier transform infrared spectroscopy, X-ray diffraction, thermogravimetric analysis, and scanning electron microscopy analyses. Atomic force microscopy investigation was carried out to compare the surface topography of the prepared samples before and after the metal uptake. The kinetics of the removal process were investigated by pseudo-first-order and -second-order models. Moreover, the adsorption isotherms were carefully studied by applying Langmuir and Freundlich models. The data reveal that upon adsorption of copper(II) metal ions, all chitosan-modified products followed the Langmuir isotherm except for Cs/GA/ECH which followed the Freundlich isotherms, and the highest adsorption capacity ( q e ) was obtained for Cs/GA/MBA due to the formation of stable chelate structures between the metal cation and the functional groups present on the modified chitosan product. The order of metal uptake at the optimum pH value is as follows: Cs/GA/MBA (Cu: 95.7 mg/g, Pb: 99.15 mg/g), Cs/GA/ECH (Cu: 80.4 mg/g, Pb: 93.14 mg/g), Cs-g-GA (Cu: 77 mg/g, Pb: 88.4 mg/g), and N, O CMCh (Cu: 30.2 mg/g, Pb: 44.8 mg/g). The AFM data confirmed the metal uptake process by comparing the roughness and height measurements of the free sorbents and the metal-loaded sorbents.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Chitosan-Based Architectures as an Effective Approach for the Removal of Some Toxic Species from Aqueous Media

Abdel-Raouf

Farag

et al. 2023

ACS Omega

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“…The higher the degree of deacetylation (DD) of chitosan, the higher the content of -NH 2 root, and the better its adsorption performance ( Jóźwiak et al, 2017 ). For example, chitosan synthesized with a higher deacetylation degree and lower molecular weight has shown good adsorption properties of heavy metals and antibiotics (levofloxacin and tetracycline hydrochloride) ( Jiang et al, 2021 ).…”

Section: Introductionmentioning

confidence: 99%

Isolation and screening of a chitin deacetylase producing Bacillus cereus and its potential for chitosan preparation

Zhang

Luo

et al. 2023

Front. Bioeng. Biotechnol.

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Chitosan is a biopolymer material extracted from marine biomass waste such as shrimp and crab shells, which has good biocompatibility and degradability with great potential for application in the field of wastewater treatment and soil remediation. The higher the degree of deacetylation (DD), the better the adsorption performance of chitosan. Chitin deacetylase (CDA) can specifically catalyze the deacetylate of chitin in a green reaction that is environmentally friendly. However, the scarcity of high yielding chitin deacetylase strains has been regarded as the technical bottleneck of chitosan green production. Here, we screened a natural chitin degrading bacterium from coastal mud and identified it as Bacillus cereus ZWT-08 by re-screening the chitin deacetylase activity and degree of deacetylation values. By optimizing the medium conditions and enzyme production process, ZWT-08 was cultured in fermentation medium with 1% (m/V) glucose and yeast extract at pH 6.0, 37°C, and a stirring speed of 180 r/min. After fermenting in 5 L fermenter for 48 h, the deacetylation activity of the supernatant reached 613.25 U/mL. Electron microscopic examination of the chitin substrate in the fermentation medium revealed a marshmallow-like fluffy texture on its structural surface. Meanwhile, 89.29% of the acetyl groups in this chitin substrate were removed by enzymatic digestion of chitin deacetylase produced by ZWT-08, resulting in the preparation of chitosan a degree of deacetylation higher than 90%. As an effective strain for chitosan production, Bacillus cereus ZWT-08 plays a positive role in the bioconversion of chitin and the upgrading of the chitosan industry.

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“…Chitin, which comes after cellulose as the most abundant polymer in nature, produces the chitosan polymer through deacetylation . Chitin is found widely in living creatures as it is the material that strengthens the exoskeletons of many animals, such as crabs, shrimps, insects, insects, eggshells, and mushrooms. − Chitosan has many advantages being a renewable material, biodegradable, and nontoxic. This broad spectrum of properties gave it popularity among scientists, where it has been implemented in many applications to replace synthetic polymers.…”

Section: Introductionmentioning

confidence: 99%

“…The use of chitosan is not particularly new, such as its use for many years in medicine, pharmaceuticals, and the food industry. − Yet, chitosan applications in engineering have gradually broadened as more methods have been explored for production . Chitosan met with significant successes in many engineering challenges as it has been implemented for water treatment, CO 2 capturing, and agricultural uses . Chitosan has been proposed as a crosslinking agent to prevent and control water production from oil and gas wells …”

Section: Introductionmentioning

confidence: 99%

Chitosan/Polyacrylamide Green Gels for Water Control in High-Temperature Reservoirs

et al. 2022

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The rheology of a gel system composed of polyacrylamide (PAM) and chitosan is studied under typical reservoir conditions. The impacts of the degree of chitosan deacetylation, temperature, and salinity on the gelation behavior are assessed. The said system was prepared under ambient conditions and matured for 24 h at altered temperatures ranging from 50 up to 125 °C. An optimum formulation has been identified considering the rheological response and the initial viscosity constraints. The increase in the degree of syneresis with the degree of deacetylation indicates the long-term thermal stability of the gels. Ammonium chloride was an effective retarder for the PAM/chitosan gelant, which delayed the gelation time from 60 to 210 min when 2 wt % is used; however, it compromised the final gel strength. The chitosan/PAM system showed a good rheological behavior and potential as a green plugging agent in high-temperature oil and gas wells. Chitosan could be an alternative for commercial crosslinkers, such as polyethyleneimine.

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Adsorption properties of heavy metals and antibiotics by chitosan from larvae and adult Trypoxylus dichotomus

Cited by 15 publications

References 69 publications

Chitosan-Based Architectures as an Effective Approach for the Removal of Some Toxic Species from Aqueous Media

Chitosan-Based Architectures as an Effective Approach for the Removal of Some Toxic Species from Aqueous Media

Isolation and screening of a chitin deacetylase producing Bacillus cereus and its potential for chitosan preparation

Chitosan/Polyacrylamide Green Gels for Water Control in High-Temperature Reservoirs

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