NDLI: Influence of Natural Organic Matter (NOM) on the Speciation of Aluminum during Water Treatment

Content Provider	Springer Nature Link
Author	Srinivasan, P. T. Viraraghavan, T.
Copyright Year	2004
Abstract	Natural organic matter (NOM) is a term collectively used to describe the complex matrix of organic material present in natural waters. The impact of NOM on the speciation of aluminum at Buffalo Pound water treatment plant was evaluated in the present study using fulvic acid. The first stage of the study was to conduct aluminum (Al) speciation experiments (using background dissolved organic carbon levels present in the raw water) at the pilot scale water treatment plant located within the main plant changing the aluminum sulfate (alum) dose from 68 mg L$^{-1}$ (yearly average dose of the main plant) to 34 mg L$^{-1}$. The second stage of the study was to conduct jar tests at various alum/DOC ratios. Pilot scale speciation study showed that when the alum/DOC ratio was 5.3, most of the total aluminum in the filtered water was in the form of particulate aluminum. Such an increased particulate aluminum level did not increase the finished water turbidity. Soluble organic aluminum also increased compared to the level in raw water when the alum/DOC ratio was 5.3. Al speciation study conducted during jar testing showed that organically bound aluminum increased from 8 μg L$^{-1}$ (raw water) to 15 μg L$^{-1}$ in the finishedwater when the alum/DOC = 1.37. Jar test results also showed that an alum/DOC of at least 7.3 should be maintained in the main plant in order to meet the proposed operating guidelines of 100 μg L$^{-1}$ of total aluminum by Health Canada given the conditions that finished water soluble aluminum levels may be in the range of 35–40 μg L$^{-1}$.
Starting Page	35
Ending Page	54
Page Count	20
File Format	PDF
ISSN	00496979
Journal	Water, Air, and Soil Pollution
Volume Number	152
Issue Number	1-4
e-ISSN	15732932
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2004-01-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Hydrogeology Atmospheric Protection/Air Quality Control/Air Pollution
Content Type	Text
Resource Type	Article
Subject	Ecological Modeling Environmental Chemistry Pollution Environmental Engineering Water Science and Technology

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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