Engineering Bonding Types and Macromeric Cross-Linkers in the Network To Modulate the Structures and Properties of Polydextran/Chitosan Hybrid Hydrogels.

Hybrid hydrogels are versatile biomaterials, and cross-linkers are the key for tailoring their characteristics. However, the bonding types in the network and the hydrophobic chain lengths of cross-linkers remain underexplored. This study introduces formylbenzoic acid-modified PEG (PEG-FA), which further reacts with adipic acid (AA), sebacic acid (SA), and tetradecanedioic acid (TDA) to create cross-linkers with varying hydrophobic segments.

[Potential and Mechanism of High-temperature Pretreatment Composting of Food Waste for Amendment of Cadmium and Lead-contaminated Soil].

To investigate the potential of high-temperature pretreatment composting of food waste for the amendment of cadmium （Cd） and lead （Pb）-contaminated soil, food waste subjected to high-temperature pretreatment composting （HC）, traditional composting （TC）, and only high-temperature pretreatment were combined with inorganic passivators （lime/zeolite） for an indoor passivation cultivation experiment. The results indicated that HC combined with the inorganic passivators group （HLZ） exhibited the most effective passivation potential for Cd and Pb in soil, achieving passivation rates of 76.92% and 86.