Effects of Polyacrylamide-Based Super Absorbent Polymer and Corn Straw Biochar on the Arid and Semi-Arid Salinized Soil

Feng, Weiying; Gao, Jiayue; Cen, Rui; Yang, Fang; He, Zhongqi; Wu, Jin; Miao, Qingfeng; Liao, Hao

doi:10.3390/agriculture10110519

Cited by 34 publications

(16 citation statements)

References 47 publications

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“…The main component of the filter paper is cellulose, and it is rich in hydroxyl groups, which results in a strong affinity for water molecules. , In addition, cellulose is biocompatible, renewable, biodegradable, nontoxic, and environmentally friendly. Its high specific surface area and good adsorption have been applied in the fabrication and modification of superwetting materials by many studies. , PAM is a general-purpose enhancer of the strength of paper, and it is used often to increase osmosis; also it can act as a flocculant to purify drinking water. , The production process of this material is more convenient and more efficient than has been reported in previous studies . The results of the water-harvesting test showed that the material fabricated in this study has great potential for use in water-harvesting systems.…”

Section: Introductionmentioning

confidence: 67%

“…27,28 PAM is a general-purpose enhancer of the strength of paper, and it is used often to increase osmosis; also it can act as a flocculant to purify drinking water. 29,30 The production process of this material is more convenient and more efficient than has been reported in previous studies. 31 The results of the water-harvesting test showed that the material fabricated in this study has great potential for use in water-harvesting systems.…”

Section: ■ Introductionmentioning

confidence: 90%

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Bioinspired Composite Materials used for Efficient Fog Harvesting with Structures that Consist of Fungi-Mycelia Networks

Zhang

Zhu

Shi

et al. 2022

ACS Sustainable Chem. Eng.

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In order to address water shortage issues around the world, the collection of fog has been considered as one possible effective solution. In this study, after cultivating several fungi, an abundance of water droplets was found on their surfaces. Based on the morphology and property analyses, a structure that facilitates the effective collection of water was proposed. The structure consists of heterogeneous fiber diameters and a hierarchical structure that provides both hydrophobic and hydrophilic properties. In order to mimic the fungi that collect water, the composite water-collection material was fabricated using a hydrophobic, hierarchical-structured, polyurethane (PU), nanofiber membrane, and hydrophilic filter paper, adhered by polyacrylamide (PAM). The surface of the hydrophilic filter paper captures water droplets from the air, and after the droplets coalesce, the convex structure of the PU membrane allows the membrane to transport the collected water. The water-collection experiment demonstrated that the hydrophilic−hydrophobic amphiphilic materials with thick and thin fibers coexist, and as a result, they can collect water effectively. The water-collection efficiency of the fungi-bioinspired materials achieved a rate of 1018.6 mg cm −2 h −1 when the surroundings were 22 ± 2 °C and 65 ± 5% RH. This work provides a new inspiration and effective methods for the development of bioinspired water-collection materials aimed at solving water shortages.

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Section: Introductionmentioning

confidence: 67%

Section: ■ Introductionmentioning

confidence: 90%

Bioinspired Composite Materials used for Efficient Fog Harvesting with Structures that Consist of Fungi-Mycelia Networks

Zhang

Zhu

Shi

et al. 2022

ACS Sustainable Chem. Eng.

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“…PAM hydrogels are also frequently used as soil amendments to improve water use efficiency and reduce soil salinity. In [ 53 ], lab soil column simulation experiments and field experiments were carried out to evaluate these functions of two separate amendments, polyacrylamide-based super absorbent polymer (SAP) and corn straw biochar at different application rates. The simulation experiments showed that both SAP and biochar inhibited the accumulation of soil salinity, with a reduced rate of 9.7–26.3% and 13.5–37.2%, respectively, dependent on the amendment application rates.…”

Section: Superabsorbent Polymer Hydrogelsmentioning

confidence: 99%

Agricultural Applications of Superabsorbent Polymer Hydrogels

Краснопеева

Панова

Yakimansky

2022

IJMS

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This review presents data from the past five years on the use of polymeric superabsorbent hydrogels in agriculture as water and nutrient storage and retention materials, as well as additives that improve soil properties. The use of synthetic and natural polymeric hydrogels for these purposes is considered. Although natural polymers, such as various polysaccharides, have undoubted advantages related to their biocompatibility, biodegradability, and low cost, they are inferior to synthetic polymers in terms of water absorption and water retention properties. In this regard, the most promising are semi-synthetic polymeric superabsorbents based on natural polymers modified with additives or grafted chains of synthetic polymers, which can combine the advantages of natural and synthetic polymeric hydrogels without their disadvantages. Such semi-synthetic polymers are of great interest for agricultural applications, especially in dry regions, also because they can be used to create systems for the slow release of nutrients into the soil, which are necessary to increase crop yields using environmentally friendly technologies.

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“…Persistent in the environment and able to retain water, nutrients, and contaminants, biochar can be used as a soil conditioner for improving soil health, enhancing fertilizer use efficiency, promoting plant growth, and reducing greenhouse gas emission (Guo et al, 2016a;. Biochar may also be used in environmental rehabilitation such as remediation of saline soils and reclamation of abandoned mine land through its high capacity for contaminant immobilization (Feng et al, 2020;Guo et al, 2016a). Biochar filters are suitable for onsite wastewater treatment (Perez-Mercado et al, 2018;Dalahmeh et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Fourier Transform Infrared and Solid State 13C Nuclear Magnetic Resonance Spectroscopic Characterization of Defatted Cottonseed Meal-Based Biochars

He¹,

Guo²,

Fortier³

et al. 2021

MAS

Self Cite

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Conversion to biochar may be a value-added approach to recycle defatted cottonseed meal, a major byproduct from the cotton industry. In this work, complete slow pyrolysis at seven peak temperatures ranging from 300 to 600°C in batch reactors was implemented to process cottonseed meal into biochar products. Elemental analysis, attenuated total reflection Fourier transform infrared (ATR FT-IR) spectroscopy and quantitative solid state 13C nuclear magnetic resonance (NMR) spectroscopy were applied to characterize raw meal and its derived biochar products. The biochar yield and organic C and total N recoveries decreased as the peak pyrolysis temperatures was elevated. However, most of the mineral elements including P in cottonseed meal were retained during pyrolysis and became enriched in biochar as a result of the decreased mass yield. The spectral data showed that pyrolysis removed the functional groups of biopolymers in cottonseed meal, producing highly aromatic structures in biochars. With increasing pyrolysis temperature, alkyl structures decreased progressively in the biochar products and became negligible at higher temperatures (550 and 600°C). Quantitative analysis of FT IR data revealed that the values of a simple 3-band (1800,1700, and 650 cm-1)-based R reading of the biochars were linearly related to the pyrolysis temperature, and showed strong correlations with decreasing aromaticity and increasing alkyl, aliphatic C-O/N and carbonyl signal intensities in the 13C NMR spectra. Therefore, the cheaper and faster FT-IR measurement could be used as a routine conversion indicator of pyrolysis of lignocellulosic biomass instead of the more expensive and time-consuming NMR spectroscopy.

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Effects of Polyacrylamide-Based Super Absorbent Polymer and Corn Straw Biochar on the Arid and Semi-Arid Salinized Soil

Cited by 34 publications

References 47 publications

Bioinspired Composite Materials used for Efficient Fog Harvesting with Structures that Consist of Fungi-Mycelia Networks

Bioinspired Composite Materials used for Efficient Fog Harvesting with Structures that Consist of Fungi-Mycelia Networks

Agricultural Applications of Superabsorbent Polymer Hydrogels

Fourier Transform Infrared and Solid State 13C Nuclear Magnetic Resonance Spectroscopic Characterization of Defatted Cottonseed Meal-Based Biochars

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