共查询到20条相似文献,搜索用时 187 毫秒
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纤维板废板边回收再生技术,是林产工业三废利用和木材代用的新技术,是解决纤维板原料不足和综合利用经济效益较高的先进技术。该项目是鄢陵纤维板厂从一九八四年到一九八八年研制成功的。其技术原理是根据纤维板废板边露天自然吸收膨胀的原理,优选以80左右的温水浸 相似文献
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指出了我国啤酒年产量已达到5000万t ,啤酒废酵母的年产量可达50~75万t.啤酒废酵母主要综合利用方式是将其作为饲料工业的原料 ,但是啤酒废酵母中含有丰富的氨基酸、维生素、谷胱甘肽和矿物质等有用成分 ,将其作为饲料工业原料后 ,这些营养成分的附加值将会严重减少.打破传统的啤酒废酵母利用方式 ,以成都某啤酒生产厂的啤酒废酵母为原料提取谷胱甘肽 ,增加啤酒废酵母的经济附加值.以啤酒废酵母为研究原料 ,利用软件Design-expert 6 .0中的响应面法分析了热水法提取啤酒废酵母中的谷胱甘肽(glutathione ,简称GSH)的提取模型和最佳提取条件.通过响应面法分析得出热水法提取GSH的最佳实验条件为 :pH值1 .6、温度61 .8℃ 、提取时间11 .4min、料水比0 .39g/mL.在此提取条件下 ,GSH的提取量达7 .83mg/g ,通过实验验证了理论值与实验值的相对误差为0 .0008 ,表明响应面法得出的提取模型和最佳实验条件合理有效. 相似文献
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指出了在钻井施工过程中出现的固废,其结构成分非常复杂,对环境造成了非常大的危害,所以,固废处理方案的科学性和合理性,在保护区域生态环境方面意义重大。以实际工程为例,针对案例的实际情况提出了几种固废处理方案,然后对方案进行了评价分析,并选出了最佳的固废处理方案,以保证生产质量可以达到要求,具有较高的经济价值。 相似文献
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Yasumi Akamatsu 《Journal of Wood Science》1998,44(5):417-420
Possible reutilization of fresh and aged culture wastes of mushrooms for cultivatingLyophyllum decastes was investigated, although bark compost has commonly been used as a substrate for cultivating this fungus. The culture wastes studied were obtained after harvestingPleurotus ostreatus andPholiota nameko mushrooms. Mycelia ofL. decastes grew in the media containing both the fresh culture waste ofP. nameko and bark compost. However, it did not grow in the medium containing only the fresh culture waste ofP. nameko or in any media containing the fresh culture waste ofP. ostreatus. The mycelial growth inhibition in the fresh culture wastes ofP. ostreatus might be caused by the water-soluble inhibitors present. Mycelia ofL. decastes grew in all the media with aged culture wastes of bothP. ostreatus andP. nameko, which had been left outdoors for 6 months, regardless of whether bark compost was mixed. Fruit bodies were produced on all the tested media with aged culture wastes of both mushrooms, which had been left outdoors for a year. The aged culture waste ofP. nameko gave greater yields than the bark compost. This investigation shows that the aged culture wastes ofP. ostreatus andP. nameko could be reutilized for producingL. decastes mushrooms.This study was presented in part at the 47th annual meeting of Japan Wood Research Society, Kochi, April 1997 相似文献
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The purpose of this paper is to estimate the environmental value of recycled wood wastes using conjoint analysis. Conjoint
analysis is one of many multi-attribute preference-elicitation techniques widely used in market research. A comparison of
the pair-wise rating method and the choice experiment elicitation method is made. An empirical study estimates the value of
recycled water cleaners using pair-wise rating and choice experiments. Water cleaners have many attributes, including their
cleaning performance, replacement time, size, color, and price. Existing water-cleaning filters use propylene or polyethylene,
which are made from petroleum resources. These filters become waste after being replaced. Another type of water-cleaning filter
is being developed, known as a “recycled filter,” which is made from construction industry wood wastes and logs from thinning.
This recycled filter can subsequently be dissolved by bacteria. An empirical study of recycled water-cleaning filters made
from wood wastes shows that recycling has significant value as estimated by both pair-wise rating and choice experiments.
However, the estimated marginal willingness to pay for recycling differs between the two methods. It may be that profile design
effects appear in our survey. 相似文献
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园林废弃物发酵基质对土壤 pH 值及含盐量的影响研究 总被引:1,自引:0,他引:1
为了研究园林废弃物发酵基质对土壤pH值及含盐量的影响,将园林废弃物粉碎以后加入生物菌剂进行发酵处理,生产的发酵基质在不同实验条件下与土壤混合,并检测了土壤pH值及含盐量的变化。实验结果表明:园林废弃物发酵基质对于土壤的pH值及含盐量有一定的影响,其中,A组1号实验条件能够有效降低土壤pH值,C组2号实验条件能够有效降低土壤含盐量。由此可以说明,园林废弃物发酵基质在改良土壤盐碱化方面具有一定的作用。 相似文献