Deposition behavior of residual aluminum in drinking water distribution system: Effect of aluminum speciation

doi:10.1016/j.jes.2015.05.010

CORC > 北京大学 > 环境科学与工程学院

	Deposition behavior of residual aluminum in drinking water distribution system: Effect of aluminum speciation
	Yue Zhang ; Baoyou Shi ; Yuanyuan Zhao ; Mingquan Yan ; Darren A.Lytle ; Dongsheng Wang
刊名	环境科学学报（英文版）
	2016
关键词	Aluminum deposition Drinking water distribution system Polyaluminum chloride (PACl) Quartz crystal microbalance QUARTZ-CRYSTAL MICROBALANCE HUMIC-ACID QCM-D ADSORPTION COAGULATION DISSIPATION STABILITY SCALES AL-30 RISK
DOI	10.1016/j.jes.2015.05.010
英文摘要	Finished drinking water usually contains some residual aluminum. The deposition of residual aluminum in distribution systems and potential release back to the drinking water could significantly influence the water quality at consumer taps. A preliminary analysis of aluminum content in cast iron pipe corrosion scales and loose deposits demonstrated that aluminum deposition on distribution pipe surfaces could be excessive for water treated by aluminum coagulants including polyaluminum chloride (PACl). In this work, the deposition features of different aluminum species in PACl were investigated by simulated coil-pipe test, batch reactor test and quartz crystal microbalance with dissipation monitoring. The deposition amount of non-polymeric aluminum species was the least, and its deposition layer was soft and hydrated, which indicated the possible formation of amorphous Al(OH)(3). Al-13 had the highest deposition tendency, and the deposition layer was rigid and much less hydrated, which indicated that the deposited aluminum might possess regular structure and self-aggregation of Al-13 could be the main deposition mechanism. While for Al-30, its deposition was relatively slower and deposited aluminum amount was relatively less compared with Al-13. However, the total deposited mass of Al-30 was much higher than that of Al-13, which was attributed to the deposition of particulate aluminum matters with much higher hydration state. Compared with stationary condition, stirring could significantly enhance the deposition process, while the effect of pH on deposition was relatively weak in the near neutral range of 6.7 to 8.7. (C) 2015 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.; supported by the National Natural Science Foundation of China; SCI(E); EI; PubMed; 中国科技核心期刊(ISTIC); 中国科学引文数据库(CSCD); yuezhang12345@163.com; byshi@rcees.ac.cn; 4; 142-151; 42
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/451024]
专题	环境科学与工程学院
推荐引用方式 GB/T 7714	Yue Zhang,Baoyou Shi,Yuanyuan Zhao,et al. Deposition behavior of residual aluminum in drinking water distribution system: Effect of aluminum speciation[J]. 环境科学学报（英文版）,2016.
APA	Yue Zhang,Baoyou Shi,Yuanyuan Zhao,Mingquan Yan,Darren A.Lytle,&Dongsheng Wang.(2016).Deposition behavior of residual aluminum in drinking water distribution system: Effect of aluminum speciation.环境科学学报（英文版）.
MLA	Yue Zhang,et al."Deposition behavior of residual aluminum in drinking water distribution system: Effect of aluminum speciation".环境科学学报（英文版） (2016).