Preparation of coal-biomass briquette from low graded raw coal and utilization of its combustion ash for acidic-soil improvement

1.利用统计干涉法测定了臭氧暴露前后外生菌根侵染和未侵染松苗根的纳米级生长速率。我们观察到前者的幼苗比后者对臭氧胁迫的抗性更强。在酸性土壤上同时施用煤质型煤(BB)、焚烧灰渣和生物质生物质堆肥，如同时施灰和化肥，可以观察到萝卜在模拟酸雨条件下的有效生长。与焚烧灰和化肥同时施用相比，焚烧灰和堆肥同时施用收获的萝卜中铝含量较低。土壤pH控制可能是由于其燃烧灰具有较强的酸中和能力和堆肥对植物有毒金属的络合作用，增加了植物对堆肥的养分供应能力，从而减少了植物对植物毒性重金属的吸收，促进了植物的生长。上述实验结果表明，BB作为家庭和轻工业燃料的利用，以及生物质型煤焚烧灰渣和堆肥在发展中国家遭受大气污染和酸雨的酸性农业土壤上的同时应用，可以控制与二氧化硫有关的空气污染和酸雨，改善土壤pH值，补充植物养分。因此，在不产生任何废物的情况下，将铍作为一种家用和轻工业燃料是非常可行的。我们将上述结果总结为一份研究报告。然后，我们继续研究生物质型煤作为家用和轻工业燃料的推广方法。

1. Nano-scale growth rates of ectomycorrhiza infected and non-infected pine seedling roots were measured before and after the ozone exposure using statistical interferometry. We observed the former seedlings were more resistive than the latter ones to ozone stress.2. Effective growth of radish under addition of simulated acid rain was observed by simultaneous application of coal-biomass briquette (BB) combustion ash and pig compost to acidic soil such as simultaneous application of its combustion ash and chemical fertilizer.3. Al content in radish harvested for simultaneous application of its combustion ash and manure compost was lower compared to simultaneous application of its combustion ash and chemical fertilizer.4. Probably, reduced intake of phytotoxic heavy metals to plant tissue and promotion of plant growth were induced by the soil-pH control due to strong acid-neutralizing ability of its combustion ash and chelating action of the compost with phytotoxic metals and increasing plant nutrient supply capacity derived from the compost.5. The above experimental results indicate the utilization of BB as a domestic and light industrial fuel and the simultaneous application of the bio-briquette combustion ash and the compost to acidic agricultural soil in developing countries suffered from air pollution and acid rain, make possible to control sulfur dioxide-related air pollution and acid rain, improve the soil pH, supply the plant nutrients. Therefore, it is very feasible the utilization of BE as a domestic and light industrial fuel without production of any waste materials.6. We summarized the above results as a research report. Then, we continue to investigate the popularization methods of bio-briquettes as a domestic and light industrial fuel.