Ash samples from corn stalk and coal co-fired at 0%, 5%, 10%, 15%, 20%, and 100% biomass were collected by a 4-stage wire-pipe type electrostatic precipitator (ESP), and the ratio of ¹⁴C/¹²C in ash samples from the 0%, 20%, and 100% co-firing scenarios were measured by an accelerator mass spectrometer. The differential capture efficiency in electrostatic fields for coal ash, coal/biomass co-combustion ash (co-ash), and pure biomass ash was studied separately based on the ratio ¹⁴C/¹²C. Other factors that may influence capture efficiency were analyzed, including microscopic morphology, resistivity, dust density, and particle size distribution. The results indicate that co-ash may be efficiently captured by ESP, while pure biomass ash could not. Co-ash capture was mainly concentrated in the first two electrostatic fields in the lab-scale ESP, and the overall capture efficiency exceeded 90%. Biomass addition decreased the resistivity of co-ash, and enhanced its surface adsorption capacity to form agglomerates, facilitating the capture of co-ash. The capture efficiency of coal ash in co-ash was higher than that of pure coal ash in the first electrostatic field of the ESP. Co-firing biomass can aid the removal of both coal ash and biomass ash when using an ESP.

通过四级线管式静电除尘器（ESP）收集了以0％，5％，10％，15％，20％和100％的生物量共烧的玉米秸秆和煤的灰分样品，其比例通过加速器质谱仪测量了0％，20％和100％共烧场景中灰分样品中¹⁴ C / ¹² C的浓度。基于¹⁴ C / ¹²的比值分别研究了煤灰，煤/生物质共燃灰（co-ash）和纯生物质灰在静电场中的差分捕获效率。C.分析了可能影响捕获效率的其他因素，包括微观形态，电阻率，粉尘密度和粒度分布。结果表明，ESP可以有效地捕集共灰，而纯生物质灰则不能。共灰分捕集主要集中在实验室规模的ESP的前两个静电场中，总捕集效率超过90％。生物质的添加降低了粉煤灰的电阻率，并增强了其表面吸附能力以形成附聚物，从而促进了粉煤灰的捕集。在电除尘器的第一个静电场中，共灰中煤灰的捕集效率要高于纯煤灰。使用ESP时，生物燃料共烧可以帮助去除煤灰和生物灰。