硅酸盐水泥与吸附纤维用于酚醛树脂合成废气去除研究
Removal of Waste Gases from Phenolic Resin Synthesis Using Cement and Fibers
袁振 1李昱辉 1马福 1袁木 1刘炳岩 1董浩然 1明宇1
作者信息
- 1. 中国矿业大学(北京)化环学院化学工程系
- 折叠
摘要
酚醛树脂合成过程中会同步释放甲醛和氨气两种有毒有害气体，传统单一处理技术难以实现协同治理。本研究以改性聚丙烯聚丙烯腈纤维为载体，负载AOA、AOB、COM等氨氧化菌及甲醛氧化菌，系统研究了不同菌种、载体和润湿状态对氨气和甲醛的去除效果；考察了菌类对载体的长期腐蚀性；并进一步将AOB菌负载于钢渣和矿渣，研究了其对甲醛的持续去除能力。氨气去除实验表明，AOB菌效果最佳，在棉纤维载体上2 h内可将150ppm氨气完全去除，去除速率显著优于AOA和COM菌。干/湿态对比证实，60℃烘干后菌体失活，去除率降至20%以下，维持湿润状态是保证高效去除的关键。腐蚀性实验发现，AOA和COM菌对聚丙烯棉纤维腐蚀严重,经过20次循环后强度保留率仅28%-32%，，而AOB菌腐蚀较轻，保留率达到81%。甲醛去除实验中，单独甲醛氧化菌FB效果优于FA，但两者混合后4 h去除率由55%-58%提升至72%；加入AOB菌后进一步提升至88.7%，去除速率常数提高约3倍。固体菌粉几乎无效。
Abstract
During the synthesis of phenolic resin, two toxic gases, formaldehyde and ammonia, are simultaneously released. Conventional single treatment technologies struggle to achieve synergistic removal. In this study, modified polypropylene fibers were used as carriers to immobilize ammonia-oxidizing bacteria (AOA, AOB, COM) and formaldehyde-degrading bacteria (FA, FB). The removal efficiencies of ammonia and formaldehyde under different bacterial strains, carriers, and wet/dry conditions were systematically investigated. The long-term corrosion of carriers by bacteria was also evaluated. Furthermore, steel slag and slag loaded with AOB were tested for sustained formaldehyde removal.Ammonia removal experiments showed that AOB exhibited the best performance, completely removing 150ppm ammonia within 2 hours on the fabric carrier, significantly outperforming AOA and COM. Wet/dry comparison confirmed that bacterial activity was lost after drying at 60 C, with removal efficiency dropping below 20%, indicating that maintaining a wet state is critical for high efficiency. Corrosion tests revealed that AOA and COM caused severe damage to polypropylene fabric (strength retention of only 28%-32% after 20 cycles), while AOB caused only mild corrosion (retention 81%).For formaldehyde removal, FB alone outperformed FA. Mixing FA and FB increased the 4-hour removal efficiency from 55%-58% to 72%. Further addition of AOB raised it to 88.7%, with a rate constant approximately three times higher. Solid bacterial powder was almost ineffective.关键词
氨氧化菌/甲醛氧化菌/改性纤维/协同去除Key words
Ammonia-oxidizing bacteria/Formaldehyde-degrading bacteria/Modified polypropylene fiber/Synergistic removal引用本文复制引用
袁振,李昱辉,马福,袁木,刘炳岩,董浩然,明宇.硅酸盐水泥与吸附纤维用于酚醛树脂合成废气去除研究[EB/OL].(2026-10-16)[2026-10-18].http://www.paper.edu.cn/releasepaper/content/202610-4.学科分类
环境污染、环境污染防治
