Rapid Inactivation of Fungal Spores in Drinking Water by Far-UVC Photolysis of Free Chlorine

化学 水处理 激进的 孢子 二氧化氯 光解 环境化学 自来水 饮用水净化 光化学 无机化学 环境工程 有机化学 微生物学 环境科学 生物
作者
Yongyi Wang,Ben Ma,Jing Zhao,Zhuoyun Tang,Wanxin Li,Chun He,Dehua Xia,Karl G. Linden,Ran Yin
出处
期刊:Environmental Science & Technology [American Chemical Society]
卷期号:57 (51): 21876-21887 被引量:18
标识
DOI:10.1021/acs.est.3c05703
摘要

Effective and affordable disinfection technology is one key to achieving Sustainable Development Goal 6. In this work, we develop a process by integrating Far-UVC irradiation at 222 nm with free chlorine (UV222/chlorine) for rapid inactivation of the chlorine-resistant and opportunistic Aspergillus niger spores in drinking water. The UV222/chlorine process achieves a 5.0-log inactivation of the A. niger spores at a chlorine dosage of 3.0 mg L-1 and a UV fluence of 30 mJ cm-2 in deionized water, tap water, and surface water. The inactivation rate constant of the spores by the UV222/chlorine process is 0.55 min-1, which is 4.6-fold, 5.5-fold, and 1.8-fold, respectively, higher than those of the UV222 alone, chlorination alone, and the conventional UV254/chlorine process under comparable conditions. The more efficient inactivation by the UV222/chlorine process is mainly attributed to the enhanced generation of reactive chlorine species (e.g., 6.7 × 10-15 M of Cl•) instead of hydroxyl radicals from UV222 photolysis of chlorine, which is verified through both experiments and a kinetic model. We further demonstrate that UV222 photolysis damages the membrane integrity and benefits the penetration of chlorine and radicals into cells for inactivation. The merits of the UV222/chlorine process over the UV254/chlorine process also include the more effective inhibition of the photoreactivation of the spores after disinfection and the lower formation of chlorinated disinfection byproducts and toxicity.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
乐乐应助虚心的芹采纳,获得20
刚刚
鳗鱼匕发布了新的文献求助10
刚刚
汉堡包应助bing采纳,获得10
1秒前
1秒前
风趣的寻凝完成签到,获得积分10
1秒前
ccccchen完成签到,获得积分10
1秒前
1秒前
Dr.c完成签到,获得积分10
1秒前
1秒前
adam完成签到,获得积分10
1秒前
善学以致用应助wendinfgmei采纳,获得10
2秒前
janie完成签到,获得积分10
2秒前
zimablue完成签到,获得积分10
2秒前
谭谨川完成签到,获得积分10
2秒前
2秒前
2秒前
you完成签到,获得积分10
2秒前
段盈完成签到,获得积分10
2秒前
小熊完成签到,获得积分10
3秒前
善学以致用应助May采纳,获得10
3秒前
沉默沛岚发布了新的文献求助10
3秒前
3秒前
肉松完成签到,获得积分10
3秒前
hafahafa发布了新的文献求助10
4秒前
4秒前
wwwww关注了科研通微信公众号
4秒前
4秒前
4秒前
4秒前
Hello应助坚果采纳,获得10
4秒前
5秒前
脑洞疼应助BenQiu采纳,获得10
5秒前
5秒前
12发布了新的文献求助10
5秒前
5秒前
qdd发布了新的文献求助10
5秒前
6秒前
wyc完成签到,获得积分10
6秒前
sdfwsdfsd完成签到,获得积分10
6秒前
liguanyu1078发布了新的文献求助10
7秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
Picture Books with Same-sex Parented Families: Unintentional Censorship 500
Nucleophilic substitution in azasydnone-modified dinitroanisoles 500
不知道标题是什么 500
A Preliminary Study on Correlation Between Independent Components of Facial Thermal Images and Subjective Assessment of Chronic Stress 500
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 360
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3970949
求助须知:如何正确求助?哪些是违规求助? 3515634
关于积分的说明 11179061
捐赠科研通 3250769
什么是DOI,文献DOI怎么找? 1795474
邀请新用户注册赠送积分活动 875831
科研通“疑难数据库(出版商)”最低求助积分说明 805188