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沼气【澳门皇冠金沙网站】的这些有哪些可取之处?

时间:2019-07-03
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【澳门皇冠金沙网站】是替代化学脱硫的一种新技术,它能够在很多方面克服化学脱硫的不足。在【澳门皇冠金沙网站】过程中,涉及两大类微生物,即光能自养型微生物和化能自养型微生物,沼气【澳门皇冠金沙网站】综述了这两大类微生物去除沼气中H2S的可取之处!
Biological desulfurization is a new technology to replace chemical desulfurization. It can overcome the shortcomings of chemical desulfurization in many ways. In the process of biological desulfurization, two kinds of microorganisms are involved, namely photoautotrophic microorganism and chemical autotrophic microorganism. Biological desulfurization of biogas summarizes the advantages of these two kinds of microorganisms in removing H2S from biogas.
(1)在光能自养型微生物技术去除沼气中的H2S方面,绿色硫细菌是一种较为理想的微生物,因为它能利用无机碳源,同时这种微生物的脱硫效率高,并且代谢产物单质硫释放在细胞外部,比较容易分离。
(1) Green sulfur bacteria is an ideal microorganism for the removal of H2S from biogas by photoautotrophic microorganism technology, because it can utilize inorganic carbon sources. At the same time, this microorganism has high desulfurization efficiency, and the metabolite sulfur is released outside the cell, so it is easy to separate.
但是,光和细菌在转化过程中需要大量的辐射能,由于反应体系中生成硫的微颗粒后,透光率将大大降低,从而影响脱硫效率,所以在经济条件上难以实现。如果能够在降低光源的能耗和提高光源的效率方面取得突破,该方法的应用具有广阔的市场应用前景。
However, light and bacteria need a lot of radiation energy in the process of transformation. Because the transmittance of sulfur particles in the reaction system will be greatly reduced, thus affecting the desulfurization efficiency, it is difficult to achieve in economic conditions. If breakthroughs can be made in reducing the energy consumption and improving the efficiency of light sources, the application of this method will have broad market application prospects.
沼气【澳门皇冠金沙网站】技术
(2)在严格控制供氧的条件下,利用化能自养型微生物去除沼气中的H2S具有很广阔的市场应用前景,尤其是两阶段脱硫工艺[13,14]已经有了工程应用的先例(谢尔-帕克工艺)。该工艺具有不影响沼气的回收利用,不产生新的环境污染等特点。另外,以铁盐吸取脱出H2S,然后用生物氧化再生铁盐吸取液,使铁盐再生的方法近年来成为新的研究热点。
(2) Under the condition of strictly controlling oxygen supply, the removal of H2S from biogas by chemoautotrophic microorganisms has broad market prospects, especially the two-stage desulfurization process [13,14], which has a precedent in engineering application (Shell-Parker process). The process has the characteristics of no impact on the recovery and utilization of biogas and no new environmental pollution. In addition, the method of iron salt regeneration has become a new research hotspot in recent years, in which H2S is absorbed by iron salt and then regenerated by biological oxidation.
(3)【澳门皇冠金沙网站】技术必须具备几个条件:,具有可靠的效率;第二,所需的营养物质少;第三,生物量中的单质硫容易分离出来。
(3) Biodesulfurization technology must have several conditions: first, reliable efficiency; second, less nutrients needed; third, the elemental sulfur in biomass can be easily separated.
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