Abstract:In this study, rice husk biochar/high-density polyethylene (HDPE) composites were prepared via melt mixing followed by extrusion. Effects of biochar content and testing temperature on the dynamic mechanical analysis (DMA) of the composites were studied. Morphological analysis of the rice husk biochar and composites were evaluated by scanning electron microscopy (SEM). The results showed that biochar had a positive effect on dynamic viscoelasticity, creep resistance and stress relaxation properties of the composites, but the creep resistance and stress relaxation of the composites decreased with the increase of temperature. SEM analysis showed that HDPE components were embedded in the holes of the rice husk biochar, and it is believed that strong interaction was achieved.
Abstract::
The emerging field of hydrogen biology has to date mainly been applied in medicine. However, hydrogen biology
can also enable positive outcomes in agriculture. Agriculture faces significant challenges resulting from a growing
population, climate change, natural disasters, environment pollution, and food safety issues. In fact, hydrogen agriculture is
a practical application of hydrogen biology, which may assist in addressing many of these challenges. It has been
demonstrated that hydrogen gas (H2) may enhance plant tolerance towards abiotic and biotic stresses, regulate plant growth
and development, increase nutritional values, prolong the shelf life, and decrease the nitrite accumulation during the storage
of vegetables, as well as increase the resilience of livestock to pathogens. Our field trials show that H2 may have a promising
potential to increase yield and improve the quality of agricultural products. This review aims to elucidate mechanisms for a
novel agricultural application of H2 in China. Future development of hydrogen agriculture is proposed as well. Obviously,
hydrogen agriculture belongs to low carbon economy, and has great potential to provide “safe, tasty, healthy, and highyield”
agricultural products so that it may improve the sustainability of agriculture.
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