普鲁兰多糖基恶臭气体阻隔喷膜的制备及性能  

Preparation and performance of polymer pullulan-based film spraying agent for garbage odor barrier

作　　者：王涵 李季 刘爱荣[1] 周涛[1] 刘静[1] 赵由才[1] WANG Han;LI Ji;LIU Airong;ZHOU Tao;LIU Jing;ZHAO Youcai(College of Environmental Science and Engineering,Tongji University,Shanghai 200092,China)

机构地区：[1]同济大学环境科学与工程学院,上海200092

出　　处：《环境工程学报》2023年第2期617-624,共8页Chinese Journal of Environmental Engineering

摘　　要：针对存余垃圾在开挖、运输过程中释放的恶臭气体,研发一种具有阻隔功能的环保型喷膜配方。选取水溶性的高分子普鲁兰多糖作为成膜基质材料制备成喷膜溶液后,通过改变成膜基质的质量分数,添加表面活性剂、纳米功能性材料等途径进行成膜配方优化,使其在应用中快速成膜发挥阻隔作用。结果表明,质量分数为1%普鲁兰多糖、0.1%吐温80所制成的喷膜溶液,最短可在5 min内形成致密的薄膜,并且对质量浓度70 mg·m^(-3)的硫化氢(H2S)和氨气(NH3)的气体截留率分别达到84.73%和86.43%。在此基础上添加质量浓度0.2 mg·L^(-1)的纳米零价铁(nanoscale zero-valent iron, nZVI),喷膜溶液对相同质量浓度的H2S气体截留率提高至91.74%,NH3气体截留率提高至99.08%。以上研究结果可为存余垃圾资源化利用,尤其是中途转运过程中的恶臭气体阻隔提供参考。Aiming at the actual application scenarios of odorous gas emission during the transfer of stock rubbish, polymer spraying film was developed to effectively block the short-distance transportation of odorous gas. Polymer pullulan was selected as a film-forming matrix material, and the film spraying agent was optimized by changing the content of the film-forming matrix and adding surfactants or functional nanomaterials to obtain a spraying film with excellent odor barrier property. Results showed that the formula made by 1% pullulan and 0.1% tween 80 had excellent gas barrier effect. The removal efficiency on H2S and NH3could reach 84.73% and 86.43% when the concentration of H2S and NH3were 70 mg·m^(-3). After adding 0.2 mg·L^(-1)nZVI, the removal efficiency of H2S and NH3were promoted to 91.74% and 99.08%. This study can provide a reference for the resource utilization of stock rubbish, especially for the odor gas barrier in the process of midway transportation.

关 键 词：存余垃圾 恶臭阻隔 硫化氢 氨气 喷膜溶液 

分 类 号：X705[环境科学与工程—环境工程]