INDUSTRIAL CROPS AND PRODUCTS
·
2024
·
IF 5.6
Jun Ma,Bo Li,Ju Wang,Jiabo Zhang,Haoyu Wang,Wenzhuo Li
Modern agriculture is troubled by white pollution caused by nondegradable polyethylene (PE) mulch film and high transportation costs caused by the large amount of water in liquid mulch film. Aiming at these problems, this study developed a new degradable and water-free powder mulch film (SUPM) with straw powders, urea, and polyvinyl alcohol (PVA) as raw materials. The wind erosion resistance and film-forming properties of SUP powders as SUPM’s precursor were investigated as well as the influence of PVA and urea content on the mechanical properties and water resistance of SUPM film. The results showed that PVA in SUPM film was in a gradient distribution conducive to the germination of crop seedlings. Here, PVA colloids were more distributed at the interface between film and air than at the interface between film and soil. The optimized SUPM film exhibited a biodegradation rate of 90.5 % over 100 d. After SUPM film degradation, soil carbon and nitrogen contents were 33.5 and 58.8 % higher, respectively, than in bare soil. In two consecutive planting experiments, pakchoi yields were higher and more stable in the soil with SUPM than in bare soil and soil with PE. Compared to other reported biodegradable mulch films, SUPM demonstrated advantages in ease of use, enhancement of soil carbon and nitrogen content, and stable crop yields. This study provided a new approach for the large-scale utilization of straw waste, mitigating environmental issues caused by traditional PE mulch, and promoting the development of environment-friendly modern agriculture.
研究领域:
农业科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
ACS Omega
·
2024
·
IF 3.7
Hao Ding,Zhian Huang,Shijie Peng,Hongsheng Wang,Jinyang Li,Ruixiang Wang,Yinghua Zhang,Pengfei Wang
Most dust suppressants used for buildings currently lack sufficient resistance to harsh conditions, such as high temperatures and wind erosion. To solve this problem, it is necessary to develop a new type of dust suppressant. In this study, the guar gum molecule was chemically modified to remove the active hydroxyl group in order to significantly improve the stability and adhesion of guar gum. Eventually, a composite dust suppressant was synthesized by incorporating a surfactant and an absorbent agent into modified guar gum. The functional groups of the reaction products were analyzed via infrared experiments, thus confirming the success of the modification. Wind erosion resistance and scanning electron microscopy experiments confirmed the improved bonding capabilities of the composite dust suppressant with dust particles. In experiments on wind erosion resistance, the dust fixation rate exceeded 50% after the application of the composite dust suppressant. The results of the thermogravimetric tests showed that the maximum mass loss rate of the samples with modified guar gum dust suppressants was 6.0% and 28% lower than those of the samples with unmodified guar gum dust suppressants and water, respectively. Furthermore, the tests conducted on pH value and corrosion resistance indicated that the pH value of this dust suppressant was comparable to that of tap water and demonstrated a similar rate of metal corrosion. The practical significance of this study is to improve the dust suppressant used in buildings, to improve the performance of dust suppressant and resistance to harsh environment, and to help to continuously improve the health of personnel and environmental protection during construction. The practical significance of this study is to improve the dust suppressant used in buildings, to improve the performance of dust suppressant and resistance to harsh environments, and to help to continuously improve the health of personnel and environmental protection during construction, which has positive practical significance for the building industry and related fields.
研究领域:
建筑材料
·
环境科学
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF ENVIRONMENTAL MANAGEMENT
·
2020
·
IF 5.647
Tao Fan,Zhenyi Liu,Jiting Ouyang,Mingzhi Li
Coal dust diffusion during coal transportation and storage causes serious environmental pollution . The existing dust suppressant in previous studies was unable to achieve the expected effects owing to severe wind damage and rain erosion. Therefore, the current study synthesized and prepared an efficient and applicable dust suppressant for coal transportation and storage. Infrared spectroscopy and scanning electron microscope experiments were conducted during the synthesis to analyze the microstructure changes in the synthetic products. Moreover, viscosity was used as the evaluation index in the single-factor experiments to obtain the optimal synthesis conditions. Performance measurement results showed that the prepared dust suppressant had a strong protective effect on coal powder and could effectively resist the impact of wind damage and rain erosion. Compared with other dust suppressants, the proposed dust suppressant prepared showed more evident positive effects and longer lasting action time in the quantitative test. Moreover, the dried product could synergistically combust with coal powder, thereby possibly mitigating the tedious post-treatment process and increasing the utilization rate of resources.
研究领域:
能源与环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Cleaner Production
·
2022
·
IF 11.072
Meng Tang,Minghui Han,Wanting Gu,Wei Xu,Fuhou Lei,Pengfei Li,Jianxin Jiang,Li Ji
Plastic pollution and soil degradation pose substantial threats to the ecosystem. The need for a cleaner environment and a protector of degraded soil is urgently calling for a green alternative to petroleum-based plastic mulch. Here, we prepared a polysaccharide-based liquid mulch with soil amendment function by an emulsification method, which was used as a sprayable and green alternative to the petroleum-based plastic mulch and a soil remediation agent for degraded soil. Tamarind polysaccharides from tamarind industrial waste was applied as the film-forming agent and the soil particle aggregator. Additionally, Camellia saponins — the natural surfactant , and regenerated oil from waste cooking oil were added to the mulch to improve its homogeneity, mechanical property and hydrophobicity . By just adding 1% of regenerated oil to the system, the elongation at break and contact angle notably increased from 43.97% to 74.46% and 47.00°–86.82°, respectively; the water-vapor permeability of the liquid mulch reduced from 5.63 g⋅mm⋅h −1 ⋅kPa −1 ⋅m −2 to 1.76 g⋅mm⋅h −1 ⋅kPa −1 ⋅m −2 . Application tests showed that the polysaccharide-based liquid mulch effectively achieved a high rate of soil resistance (90.36%) to wind erosion. Topsoil erosion caused by wind can be considerably reduced. Scanning electron microscopic characterization revealed the effect of xyloglucan on soil particle aggregation. The liquid mulch also increased the germination rate by 31.00%. Moreover, after liquid mulch degradation, the nitrogen and carbon contents of the soil increased significantly from 0.05% to 0.60% and 1.42%–13.54%, respectively, thereby substantially increasing the soil organic matter content. The developed low-cost, yield-improving liquid mulch shows promising prospects for mulches and soil amendment in agriculture .
研究领域:
农业科学
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环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Fangzhou Xu,Qianyu Dong,Shikai Zhang,Qicong Wu,Chunchun An,Xiaoqian Li,Xinchuang Chen,Yang Chen,Xincheng Zhang,Jinrong Li,Zhi Dong
Natural biopolymer-based liquid mulching films (LMF) have received widespread attention, whereas the fragile structure and limited functionality have severely restricted their application. Herein, polydopamine-coated montmorillonite micro/nanoparticles enhanced pectin-based sprayable multifunctional liquid mulching films (P-MMT@PDA LMF) were prepared. Dopamine has abundant active sites, and its self-polymerization onto the surface of MMT improves the compatibility of MMT with pectin chains, facilitates the homogeneous dispersion of MMT@PDA in pectin polymers, and makes them more tightly entangled through hydrogen bonding. Therefore, P-MMT@PDA LMF exhibits better mechanical properties (improved by 64.94 N) and wind erosion resistance (wind speed 30 m/s, >60 min). Moreover, MMT@PDA micro/nanoparticles can fill the voids of pectin chains, thus increasing the densification and complexity of the network structure in LMF, enabling better water retention (improved by 14.67 %) and heat preservation (increased by 3.14 °C). Meanwhile, the photothermal effect of PDA endows P-MMT@PDA LMF with a warming effect (increased by 2.84 °C). Hence, this LMF promote wheat growth and demonstrate good biodegradability. These results suggest that the application of P-MMT@PDA LMF is an effective strategy in the environments of drought and cold, which is expected to provide a green solution for sustainable agricultural development and environmental protection in the future.
研究领域:
农业科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Marine Science and Engineering
·
2025
·Vol. 13
·期 5
·883
·
IF 2.8
Xiuqiong Deng,Ziyu Wang,Yuchun Qin,Liang Cao,Peng Cao,Yu Xie,Yingqi Xie
Combining the Microbial-Induced Calcium Carbonate Precipitation (MICP) technique with plants to reinforce calcareous sand slopes on reef islands is expected to achieve both reinforcement and economic benefits. In this study, MICP was combined withFestuca arundinacea(MICP-FA) for calcareous sand reinforcement. Based on water retention and scanning electron microscopy (SEM) tests, the water retention performance and mechanism of MICP-reinforced calcareous sand under different cementation solution concentrations and cementation cycles were analyzed. The growth adaptability ofFestuca arundinaceawas evaluated under different bacteria solution concentrations, cementation solution concentrations and cementation cycles. The engineering applicability of MICP-FA-reinforced calcareous sand was evaluated by wind erosion tests, and the synergistic reinforcement mechanism was analyzed. The results show that with the increase in the cementation solution concentration and cementation cycles, more calcium carbonate filled and adhered to the calcareous sand particles, significantly improving the water retention performance. MICP-FA can enhance the wind erosion resistance of calcareous sand. This synergistic mechanism lies in the surface cementation effect of MICP and the deep anchoring effect of plant roots. This study provides theoretical basis and technical guidance for engineering applications in calcareous sand areas.
研究领域:
土力学
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环境工程
·
生态修复
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Polymer Materials
·
2022
·
IF 4.855
Zhiang Shao,Hao Dong,Weimin Cheng,Mingyue Wu,Yanyun Zhao,Jianfeng Wei,Xiangming Hu,Di Xue,Yongsheng Li,Xiaoxiao Yu
Considerable fugitive dust generated during the mining, transportation, and storage of mineral materials pollutes the environment and poses threat to the health of workers and surrounding residents. Spraying polymer solutions is usually used to suppress fugitive dust, but the dust will return to the air under the erosion of wind and rain due to the lack of a stable bonding mechanism with the dust. Based on this, through polymerization of mussel-inspired lignin-Ag nanoparticles (NPs), acrylic acid, and alkyl polyglucoside, an environmentally friendly stable-bonding dust binder was prepared. Different from the high initial viscosity of traditional polymer dust suppressants, the stable-bonding dust binder with high consolidation ability but easily atomized characteristic related to the synthesis of short-chain polymer systems with concentration-sensitive self-assembly behavior. When a 10 m/s wind was applied to dust treated by the stable-bonding dust binder, the mass-loss rate (6%) was lower than the dust treated by only a surfactant solution (100%) or polyacrylic acid solution (27%). When 12 L of water was sprayed on the dust (100 g) treated with the stable-bonding dust binder, the residual stress strength (1 MPa) was higher than the dust treated with only the polyacrylic acid solution (0.017 MPa). Furthermore, molecular dynamics simulation of the interaction between the dust-binder molecules and coal molecules was carried out to confirm the adhesion of lignin-Ag NPs to dust. Our research on dust binders provides a path for the stable control of fugitive dust, which improves the consolidation efficiency of dust and reduces costs.
研究领域:
环境科学
·
材料科学
·
化学工程
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）