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The synthesis and properties of PLA fiber are introduced, and the research progress of PLA fiber blending modification and composite material development for textile field in recent years is described・ Through modification and development, the properties and applicability of PLA fiber in the field of textiles are enhanced, the synthetic methods of materials are improved, and the PLA fiber is further promoted to the market. [ABSTRACT FROM AUTHOR]

This paper summarizes the research progress of sludge resource utilization technology, analyzes the mechanism of different pretreatment processes on the dissolution of sludge substances and the dissolution effect, and compares the advantages and shortcomings of different pretreatment methods; summarizes the resource recycling and utilization pathways such as protein recovery, alginate recovery and anaerobic fermentation after sludge pretreatment; and provides suggestions and perspectives on the engineering application of sludge pretreatment and resource utilization. The recommendations and prospects for the engineering application of sludge pretreatment and resource utilization are also provided. [ABSTRACT FROM AUTHOR]

The extraction of inulin from Jerusalem artichoke was carried out by hydrothermal method. Through designing single factor experiment, three main factors affecting the extraction temperature, time and phosphoric acid concentration were determined. Using response surface method for optimal analysis of the extraction process of inulin, using the Design-Expert software to design three factors and three levels of experiments, obtained the best extraction conditions of inulin; water bath temperature 87 °C, extraction time 82 min,phosphate concentration 0.7 g/L,under this condition,the extraction rate of inulin reached 22.44%. The results are consistent with the predicted values, which proves that the prediction model is effective and can be used to optimize the extraction process of inulin. This study provides theoretical basis and data support for the further development and utilization of Jerusalem artichoke in plateau area. [ABSTRACT FROM AUTHOR]