A Comparative Analysis of the Efficiencies of Pre-ozonation with and without Chitosan and Ferric Chloride in Eliminating Diatoms, Chlorophyceae, and Cyanophyceae from Surface Waters: A Case Study of Mijran Dam Reservoir

IF 3 4区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES

Water, Air, & Soil Pollution Pub Date : 2025-05-20 DOI:10.1007/s11270-025-08104-w

Homa Mohammadalimirza Shahrestanaki, Amirhesam Hassani, Amirhossein Javid, Ali Torabian

{"title":"A Comparative Analysis of the Efficiencies of Pre-ozonation with and without Chitosan and Ferric Chloride in Eliminating Diatoms, Chlorophyceae, and Cyanophyceae from Surface Waters: A Case Study of Mijran Dam Reservoir","authors":"Homa Mohammadalimirza Shahrestanaki, Amirhesam Hassani, Amirhossein Javid, Ali Torabian","doi":"10.1007/s11270-025-08104-w","DOIUrl":null,"url":null,"abstract":"<div><p>The Mijran Dam reservoir is of significant importance as it is used for potable water supply. Many consumers are dissatisfied with the taste and odor of drinking water, which is often caused by compounds from chemical fertilizers, animal manure, pesticides, heavy metals, algae and wastewater. This study examines the effectiveness of pre-ozonation and the application of chitosan and ferric chloride coagulants in removing diatoms, chlorophyceae, and cyanophyceae from the Mijran Dam water reservoir. A laboratory-based experimental methodology was employed to identify algal species and conduct microscopic sample analyses. The experimental framework was meticulously crafted using Design-Expert v13 software, with validation of findings achieved via applying the response surface method (RSM). Statistical scrutiny of the amassed data was executed using SPSS software. The study investigated the influence of various parameters, including the pH level of chitosan (5–10) and ferric chloride (5–10), chitosan concentration (20 to 500 mg/L), ferric chloride concentration (5 to 100 mg/L), ozone pH levels (3 to 11), and injected ozone concentration (2 to 8 mg/L). Pre-ozonation at a concentration of 8 mg/L and a pH of 7 could eliminate approximately 70% of diatoms, 78% of chlorophyceae, and 88% of cyanophyceae. Ozonation (2 mg/L) used along with chitosan (500 mg/L) at a pH of 10 enhanced algal removal, leading to the elimination of approximately 77% of diatoms, 81% of chlorophyceae, and 92% of cyanophyceae. Ozonation (2 mg/L) in conjunction with ferric chloride (75 mg/L) at a pH of 10 resulted in the elimination of diatoms, chlorophyceae, and cyanophyceae at rates of approximately 79%, 83%, and 97%, respectively. Ozonation, employed together with ferric chloride and chitosan enhanced efficiency while concurrently reducing ozone demand.</p></div>","PeriodicalId":808,"journal":{"name":"Water, Air, & Soil Pollution","volume":"236 8","pages":""},"PeriodicalIF":3.0000,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Water, Air, & Soil Pollution","FirstCategoryId":"6","ListUrlMain":"https://link.springer.com/article/10.1007/s11270-025-08104-w","RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}

引用次数: 0

Abstract

The Mijran Dam reservoir is of significant importance as it is used for potable water supply. Many consumers are dissatisfied with the taste and odor of drinking water, which is often caused by compounds from chemical fertilizers, animal manure, pesticides, heavy metals, algae and wastewater. This study examines the effectiveness of pre-ozonation and the application of chitosan and ferric chloride coagulants in removing diatoms, chlorophyceae, and cyanophyceae from the Mijran Dam water reservoir. A laboratory-based experimental methodology was employed to identify algal species and conduct microscopic sample analyses. The experimental framework was meticulously crafted using Design-Expert v13 software, with validation of findings achieved via applying the response surface method (RSM). Statistical scrutiny of the amassed data was executed using SPSS software. The study investigated the influence of various parameters, including the pH level of chitosan (5–10) and ferric chloride (5–10), chitosan concentration (20 to 500 mg/L), ferric chloride concentration (5 to 100 mg/L), ozone pH levels (3 to 11), and injected ozone concentration (2 to 8 mg/L). Pre-ozonation at a concentration of 8 mg/L and a pH of 7 could eliminate approximately 70% of diatoms, 78% of chlorophyceae, and 88% of cyanophyceae. Ozonation (2 mg/L) used along with chitosan (500 mg/L) at a pH of 10 enhanced algal removal, leading to the elimination of approximately 77% of diatoms, 81% of chlorophyceae, and 92% of cyanophyceae. Ozonation (2 mg/L) in conjunction with ferric chloride (75 mg/L) at a pH of 10 resulted in the elimination of diatoms, chlorophyceae, and cyanophyceae at rates of approximately 79%, 83%, and 97%, respectively. Ozonation, employed together with ferric chloride and chitosan enhanced efficiency while concurrently reducing ozone demand.

查看原文本刊更多论文

壳聚糖和氯化铁预臭氧化去除地表水中硅藻、绿藻和蓝藻的效果比较——以密然坝水库为例

Mijran大坝水库具有重要意义，因为它用于提供饮用水。许多消费者对饮用水的味道和气味不满意，这通常是由化肥、动物粪便、农药、重金属、藻类和废水中的化合物引起的。本研究考察了预臭氧化的效果，以及壳聚糖和氯化铁混凝剂在去除米然大坝水库中硅藻、绿藻和蓝藻中的应用。采用以实验室为基础的实验方法鉴定藻类种类并进行显微样品分析。实验框架使用Design-Expert v13软件精心制作，并通过应用响应面法（RSM）验证结果。使用SPSS软件对积累的数据进行统计审查。研究了壳聚糖（5 ~ 10）和氯化铁（5 ~ 10）的pH值、壳聚糖浓度（20 ~ 500 mg/L）、氯化铁浓度（5 ~ 100 mg/L）、臭氧pH值（3 ~ 11）和注入臭氧浓度（2 ~ 8 mg/L）等参数对制备工艺的影响。在浓度为8 mg/L、pH为7的预臭氧化条件下，可以去除约70%的硅藻、78%的绿藻和88%的蓝藻。臭氧化（2mg /L）和壳聚糖（500mg /L）在pH值为10的条件下使用，增强了藻类的去除，导致大约77%的硅藻，81%的绿藻和92%的蓝藻被去除。臭氧化（2mg /L）和氯化铁（75mg /L）在pH值为10时，硅藻、绿藻和蓝藻的清除率分别约为79%、83%和97%。臭氧化与氯化铁和壳聚糖一起使用可提高效率，同时减少臭氧需求。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Water, Air, & Soil Pollution 环境科学-环境科学

CiteScore

4.50

自引率

6.90%

发文量

448

审稿时长

2.6 months

期刊介绍： Water, Air, & Soil Pollution is an international, interdisciplinary journal on all aspects of pollution and solutions to pollution in the biosphere. This includes chemical, physical and biological processes affecting flora, fauna, water, air and soil in relation to environmental pollution. Because of its scope, the subject areas are diverse and include all aspects of pollution sources, transport, deposition, accumulation, acid precipitation, atmospheric pollution, metals, aquatic pollution including marine pollution and ground water, waste water, pesticides, soil pollution, sewage, sediment pollution, forestry pollution, effects of pollutants on humans, vegetation, fish, aquatic species, micro-organisms, and animals, environmental and molecular toxicology applied to pollution research, biosensors, global and climate change, ecological implications of pollution and pollution models. Water, Air, & Soil Pollution also publishes manuscripts on novel methods used in the study of environmental pollutants, environmental toxicology, environmental biology, novel environmental engineering related to pollution, biodiversity as influenced by pollution, novel environmental biotechnology as applied to pollution (e.g. bioremediation), environmental modelling and biorestoration of polluted environments. Articles should not be submitted that are of local interest only and do not advance international knowledge in environmental pollution and solutions to pollution. Articles that simply replicate known knowledge or techniques while researching a local pollution problem will normally be rejected without review. Submitted articles must have up-to-date references, employ the correct experimental replication and statistical analysis, where needed and contain a significant contribution to new knowledge. The publishing and editorial team sincerely appreciate your cooperation. Water, Air, & Soil Pollution publishes research papers; review articles; mini-reviews; and book reviews.