Effect of aluminum hydrolyte species on human enterovirus removal from water during the coagulation process
Effect of aluminum hydrolyte species on human enterovirus removal from water during the coagulation process
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DOI：
10.1016/j.cej.2015.09.045
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发表时间：
2016-01
影响因子：
15.1
通讯作者：
N. Shirasaki;T. Matsushita;Y. Matsui;T. Marubayashi
中科院分区：
文献类型：
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作者：
N. Shirasaki;T. Matsushita;Y. Matsui;T. Marubayashi
制备了以单体铝、聚合铝和胶体铝为主要成分的铝基混凝剂，考察了铝水解产物对湖泊和河流水样中脊髓灰质炎病毒（PV）1型和抗游离氯病毒柯萨奇病毒（CV）B5型两种肠道病毒的去除效果。我们发现，铝水解物在凝结剂中的分布差异影响了凝结过程中这些肠道病毒的去除：用具有高胶体铝含量和2.1碱度的聚合氯化铝（PAC）观察到的PV和CV的去除率（即，PAC 1 -2.1c）比用高单体铝含量凝结剂观察到的那些（即，AlCl 3溶液）和高聚合铝含量混凝剂PAC 1（PAC 1 -2.1b）。与AlCl 3或PAC 1 -2.1b不同，PAC 1 -2.1c含有Al 30物种，表明Al 30物种可能在肠道病毒的清除中起主要作用。PV和CV的清除率几乎相同，无论使用何种凝血剂类型或病毒定量方法（空斑形成单位法或实时聚合酶链反应法），这表明PV和CV在凝血过程中的表现相似。我们还通过实验证实，去除病毒的主要机制是在电荷中和过程中共沉淀到生长的氢氧化铝中;病毒吸附到形成的氢氧化铝絮体上也有助于去除病毒，但作用有限。
We prepared different types of aluminum-based coagulants, consisting of mainly monomeric aluminum species, polymeric aluminum species, or colloidal aluminum species, to investigate the effect of aluminum hydrolyte species on the removal of two types of human enteroviruses, poliovirus (PV) type 1 and the free-chlorine-resistant virus coxsackievirus (CV) B5, from lake and river water samples during the coagulation process. We found that differences in the distribution of the aluminum hydrolyte species in the coagulant affected the removal of these enteroviruses during coagulation: the removal ratios of PV and CV observed with polyaluminum chloride (PACl) with a high colloidal aluminum content and a basicity of 2.1 (i.e., PACl-2.1c) were larger than those observed with high monomeric aluminum content coagulant (i.e., AlCl3solution) and with high polymeric aluminum content coagulant PACl (PACl-2.1b). Unlike AlCl3or PACl-2.1b, PACl-2.1c contains Al30species, indicating that Al30species probably play a major role in the removal of enteroviruses. The PV and CV removal ratios were almost identical, regardless of the coagulant type or viral quantification method used (plaque-forming unit method or real-time polymerase chain reaction method), suggesting that PV and CV behaved similarly during the coagulation process. We also experimentally confirmed that the main mechanism for virus removal was coprecipitation into growing aluminum hydroxide during charge neutralization; virus adsorption onto formed aluminum hydroxide flocs also contributed to virus removal, but played a limited role.