作者:郑梦龙， 李友婧， 杨 莹， 李 芬

Authors:ZHENG Menglong, LI Youjing, YANG Ying, LI Fen摘要: 为了研究生物炭的应用模式,以剩余污泥和秸秆为原料,采用 KOH 活化工艺和涂布法制备出复合炭和炭纸,优化制备工艺参数,并对其吸附 H2 S 恶臭气体的性能进行了研究。 结果表明,当活性污泥:秸秆:KOH 的质量比为 5∶ 5∶ 10、炭化的温度为 550℃ 时,制得复合炭 SS5510 吸附 H2 S 效果最好,H2 S 的吸附时间为 120 min;将复合炭制成炭纸后,由于粘合剂堵塞了复合炭的部分孔道,因此炭纸的脱臭性能下降,但也可以达到 36 min;其中复合炭,分散剂和粘合剂的质量比为 25∶ 1∶ 3 时效果为最好,从结构分析显示获得的复合炭和炭纸表面均存在着较大量的孔,以及 O-H、C = O、N-H、C-O 等含氧含氮官能团,这些结构对 H2 S 的吸附起积极作用。

Abstract: In order to study the application mode of biochar, excess sludge and straw were used as raw materials and KOH activation process and coating method were adopted, which prepared composite carbon and composite carbon papers, the preparation process parameters were optimized and the performance of adsorbing H2 S odor gas was studied. The results show that the deodorization effect of the carbon material prepared by KOH as the activator of sludge straw was obviously better than that of urea. When the ratio of activated sludge∶ straw∶ KOH is 5∶ 5∶ 10 and the carbonization temperature is 550℃ , the adsorption duration of H2 S is the longest, which is 120 min. After the composite carbon is made into carbon papers, because the adhesive blocks part of the pores of the composite carbon, the deodorization performance of carbon papers is decreased slightly, but it can also reach 36 minutes and when the mass ratio of composite carbon, dispersant and binder is 25∶ 1∶ 3, the adsorption properties are the best. The structural analysis shows that there are a large number of holes on the surface of composite carbon and carbon papers. The structural analysis shows that there are a large number of pores on the surface of the composite carbon and carbon papers, as well as there are oxygen-containing and nitrogen- containing functional groups such as O-H, C = O, N-H, C-O. These structures play a positive role in the adsorption of H2 S.


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