Chitosan-modified biochar: Preparation, modifications, mechanisms and applications

Gao, Nan; Du, Wenzhen; Zhang, Manyue; Ling, Guixia; Zhang, Peng

doi:10.1016/j.ijbiomac.2022.04.006

Cited by 50 publications

(14 citation statements)

References 139 publications

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“…After leaching, the soluble protein content of Chinese cabbage increased slightly. In previous studies, it was found that after leaching treatment, plant cells would have significant changes and showed a trend of decreasing chlorophyll, which was consistent with the current research results [36,37]. The effect of adding 5% humic acidmagnetic biochar is the best.…”

Section: Results and Analysis Of The Impact Of Modified Biochar On Cr...supporting

confidence: 90%

Analysis of the Effect of Modified Biochar on Saline–Alkali Soil Remediation and Crop Growth

Wang

et al. 2023

Sustainability

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To solve the problem of soil degradation in coastal saline–alkali land, three different types of biochar (rice straw biochar, magnetic biochar, and humic acid–magnetic biochar) were prepared to remedy the saline–alkali soil under different mixing ratios. The effects of biochar on the growth of crops in saline–alkali soil were explored through a pot experiment on Chinese cabbage. The experimental results showed that the soil leaching treatment combined with humic acid–magnetic biochar could effectively repair the coastal saline–alkali soil. After adding 5% humic acid–magnetic biochar, the content of soil organic matter was 33.95 g/kg, the water content was 13.85%, and the contents of available phosphorus and available potassium were 9.43 mg/kg and 29.51 mg/kg. After adding 5% humic acid–magnetic biochar, the plant height of Chinese cabbage was 9.16 ± 0.19 cm, and the plant germination rate reached 83.33 ± 5.54%. The incorporation of biochar could effectively increase the chlorophyll content and soluble protein content of pakchoi and reduce the soluble sugar content of pakchoi. The study analyzed the effect of different modified biochar on saline–alkali land restoration and crop growth and explored the action rule of hydrochloric acid magnetic biochar on saline–alkali land restoration, which has important practical value for improving coastal saline–alkali land.

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Section: Results and Analysis Of The Impact Of Modified Biochar On Cr...supporting

confidence: 90%

Analysis of the Effect of Modified Biochar on Saline–Alkali Soil Remediation and Crop Growth

Wang

et al. 2023

Sustainability

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“…Beyond a pH of 6.6, the electrostatic repulsion between MO and the chitosan-PABC composite microspheres intensified, yet the q MO remained approximately at 40 mg/g. This phenomenon is likely due to π-π interactions, hydrophobic interactions or hydrogen bonding between the two materials [33,42].…”

Section: Effect Of Dosagementioning

confidence: 99%

“…For instance, Park et al [19] and Cheng et al [32] employed modifications with NH 4 Cl, ZnCl 2 and Fe 2+ to enhance the adsorption capacity of MO. Compared to chemical modifications, chitosan-based modification presents a more environmentally sustainable option [33]. Thus, the synthesis of chitosan-PABC composite microspheres will be pursued by encapsulating biochar within chitosan to improve the adsorption capacity of MO and enhance the reusability of biochar [34].…”

Section: Introductionmentioning

confidence: 99%

Enhanced Adsorption of Methyl Orange from Aqueous Phase Using Chitosan–Palmer Amaranth Biochar Composite Microspheres

Chen,

Yin,

Zhang

et al. 2024

Molecules

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To develop valuable applications for the invasive weed Palmer amaranth, we utilized it as a novel biochar source and explored its potential for methyl orange adsorption through the synthesis of chitosan-encapsulated Palmer amaranth biochar composite microspheres. Firstly, the prepared microspheres were characterized by scanning electron microscopy and Fourier transform infrared spectroscopy and were demonstrated to have a surface area of 19.6 m2/g, a total pore volume of 0.0664 cm3/g and an average pore diameter of 10.6 nm. Then, the influences of pH, dosage and salt type and concentration on the adsorption efficiency were systematically investigated alongside the adsorption kinetics, isotherms, and thermodynamics. The results reveal that the highest adsorption capacity of methyl orange was obtained at pH 4.0. The adsorption process was well fitted by a pseudo-second-order kinetic model and the Langmuir isotherm model, and was spontaneous and endothermic. Through the Langmuir model, the maximal adsorption capacities of methyl orange were calculated as 495.0, 537.1 and 554.3 mg/g at 25.0, 35.0 and 45.0 °C, respectively. Subsequently, the adsorption mechanisms were elucidated by Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy investigations. It is indicated that electrostatic interactions, hydrogen bonding, π–π interactions and hydrophobic interactions between methyl orange and the composite microspheres were pivotal for the adsorption process. Finally, the regeneration studies demonstrated that after five adsorption–desorption cycles, the microspheres still maintained 93.6% of their initial adsorption capacity for methyl orange. This work not only presents a promising method for mitigating methyl orange pollution but also offers a sustainable approach to managing Palmer amaranth invasion.

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“…A large number of edible coatings is available, and among them, chitosan is the most common. Chitosan (β-(1,4)-2-amino-2-deoxy-D-glucose) is a natural biopolymer, obtained by deacetylation of chitin, which is the second most important polysaccharide in nature after cellulose, and is present in the exoskeleton structure of marine invertebrates, insects, as well as fungi, algae, and yeast [15,16]. Chitosan is one of the most used edible coatings due to its biocompatibility, biodegradability, and bioactivity, since it is a powerful material that can be applied in human medicine, cosmetics, and agriculture.…”

Section: Chitosanmentioning

confidence: 99%

Chitosan and other edible coatings to extend shelf life, manage postharvest decay, and reduce loss and waste of fresh fruits and vegetables

Romanazzi

Moumni

2022

Current Opinion in Biotechnology

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Chitosan-modified biochar: Preparation, modifications, mechanisms and applications

Cited by 50 publications

References 139 publications

Analysis of the Effect of Modified Biochar on Saline–Alkali Soil Remediation and Crop Growth

Analysis of the Effect of Modified Biochar on Saline–Alkali Soil Remediation and Crop Growth

Enhanced Adsorption of Methyl Orange from Aqueous Phase Using Chitosan–Palmer Amaranth Biochar Composite Microspheres

Chitosan and other edible coatings to extend shelf life, manage postharvest decay, and reduce loss and waste of fresh fruits and vegetables

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