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New Materials for Biogas Production in Livestock Farms in Bulgaria

机译：保加利亚畜牧农场沼气生产的新材料

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A comparative study was conducted for the production of biogas utilizing raw materials that are new for Bulgaria.The study included three types of beetroot: sugar beet,red beet and fodder beet in two variants.First variant: heads + leaves,Second variant: heads.For all the raw materials the following content was determined: dry matter,organic matter,nitrogen and crude ash (minerals content,including some toxic elements).The results of the analysis show that the highest values of dry matter were found i sugar beet in both variants: 20.61％ and 28.12％ respectively.In terms of organic matter content.the tendencies of higher values in sugar beet remain (13.51％ and 26.21％ respectively for both variants).Nitrogen content is highest in fodder beet-2.48％ and l.90％ respectively for both variants.and it is the lowest in sugar beet-1.65％ and l.30％ respectively for both variants.A tendency for higher crude ash content in fodder beet is observed ; the content of toxic elements such as cadmium and lead are highest in both variants.Sugar beet stands out with best values for each indicator characterizing the production of biogas.
机译：采用对保加利亚新的原材料进行沼气的比较研究。研究包括三种类型的甜菜：甜菜，红甜菜和饲料甜菜在两个变型中。首先：头+叶子，第二种变体：头部。对于所有原材料，确定以下内容：干物质，有机物，氮气和粗灰（矿物质含量，包括一些有毒元素）。分析结果表明，发现了干物质的最高值I甜菜在两种变型：在糖的较高值的有机物content.the倾向20.61％和28.12％respectively.In术语甜菜保持（13.51％和分别用于两种变体26.21％）.Nitrogen含量最高的是饲料甜菜-2.48％和对于两个变体分别的L.90％分别是糖甜菜-1.65％和L.30％的最低用于均可变体。观察到肥料中较高粗灰分含量的趋势;镉和铅如镉和铅的含量在两种变体中最高。朱甜菜脱颖而出，每个指标的最佳值表征沼气的产生。

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