吸附剂XF-1对奶牛舍中CO_2、CH_4、NH_3和H_2S的吸附能力试验

The Study on the Adsorption Capacity of Adsorbent XF-1 Adsorption to CO_2, CH_4, NH_3 and H_2S in the Cowshed

选用一种分子筛(XF-1)作为吸附剂,对奶牛圈舍中的CO_2、CH_4、NH_3和H_2S进行吸附试验。用便携式气体检测仪测定风机口排出的CO_2、CH_4、NH_3和H_2S浓度,悬挂吸附剂前后测得的浓度之差即为吸附剂XF-1的吸附浓度。根据实际测得的气温、气压、风速,利用理想气体状态方程推导出公式,将ppm换算为mg/m^3。当悬挂吸附剂后测得浓度与初始浓度无差异性时停止试验。结果表明:1kg吸附剂XF-4春季可吸附CO_2 61.29g、CH_4 8.39g、NH_3 1.27g、H_2S 1.71g;夏季可吸附CO_2 59.14g、CH_4 8.02g、NH_3 1.34g、H_2S1.75g;秋季可吸附CO_2 65.76g、CH_4 8.71g、NH_3 1.64g、H_2S 1.54g,冬季可吸附CO_2 70.91g、CH_4 9.32g、NH_3 2.29g、H_2S 1.57g。吸附剂XF-1对CO_2、CH_4和NH_3的吸附质量与圈舍温度、湿度、初始浓度相关性显著或极显著(P<0.05、P<0.01),对H_2S的吸附质量与圈舍湿度、气体的初始浓度相关性显著(P<0.05)。吸附剂XF-1在春、冬季悬挂31h,夏季、秋季悬挂30h需要更换。

This experiment tested the adsorption capacity to CO2, CH4, NH3 and H2S of materials adsorbent XF-1 in the cowshed. Take suspension adsorbent as the experimental group, and the control group without adsorbent. The different values between the two groups were the adsorption concentration of XF-1. Using the ideal gas state equation to deduce formula according the actual measured temperature, atmospheric pressure and wind speed, put ppm converted to mg/m3. Stop the test when there was no obvious different between the experimental group and control group. The experimental data showed that 1 kg of adsorbent XF-1 could adsorb CO2 61.29g, CH4 8.39g, NH3 1.27g and H2S 1.71g in spring, adsorb CO2 59.14g, CH48.02g, NH3 1.34g and H2S 1.72g in summer, adsorb CO2 65.76g, CH4 8.71g, NH3 1.64g and H2S 1.54g in autumn, adsorb CO2 70.91g, CH4 9.32g, NH3 2.29g and H2S 1.57g in winter. The adsorption quality of adsorbent XF-1 to CO2, CH4 and NH3 had positive correlation with the temperature, relative humidity and initial concentration, for H2S had positive correlation with the relative humidity, initial concentration.The Adsorbent XF-1 should be replaced after suspension for 31h in spring and winter,should be replaced after suspension for 30h in summer and autumn.