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A combined computational and experimental study of the heteroaggregation of dissimilar adsorbent particles

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Title
A combined computational and experimental study of the heteroaggregation of dissimilar adsorbent particles
Name (type = personal)
NamePart (type = family)
Chaturbedi
NamePart (type = given)
Anik Kumar
NamePart (type = date)
1989-
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Anik Kumar Chaturbedi
Role
RoleTerm (authority = RULIB)
author
Name (type = personal)
NamePart (type = family)
Ramachandran
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Rohit
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Rohit Ramachandran
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Advisory Committee
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chair
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Shapley
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Nina
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Nina Shapley
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Advisory Committee
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co-chair
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Chiew
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Yee
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Yee Chiew
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Advisory Committee
Role
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internal member
Name (type = personal)
NamePart (type = family)
Hara
NamePart (type = given)
Masanori
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Masanori Hara
Affiliation
Advisory Committee
Role
RoleTerm (authority = RULIB)
internal member
Name (type = personal)
NamePart (type = family)
Reinfelder
NamePart (type = given)
John
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John Reinfelder
Affiliation
Advisory Committee
Role
RoleTerm (authority = RULIB)
outside member
Name (type = corporate)
NamePart
Rutgers University
Role
RoleTerm (authority = RULIB)
degree grantor
Name (type = corporate)
NamePart
School of Graduate Studies
Role
RoleTerm (authority = RULIB)
school
TypeOfResource
Text
Genre (authority = marcgt)
theses
OriginInfo
DateCreated (qualifier = exact)
2019
DateOther (qualifier = exact); (type = degree)
2019-01
CopyrightDate (encoding = w3cdtf)
2019
Place
PlaceTerm (type = code)
xx
Language
LanguageTerm (authority = ISO639-2b); (type = code)
eng
Abstract (type = abstract)
Heteroaggregation, the process of aggregation between dissimilar particles is becoming increasingly popular due to the versatile applicability of heteroaggregates. The specific requirements of these widespread application areas require customized heteroaggregates with unique set of properties related mainly to the size and composition of these heteroaggregates. This has created an immense need for a developed understanding of the heteroaggregate process. However, research on heteroaggregates have been very limited, even fundamental questions pertinent to the mechanism of heteroaggregation process remain unanswered to date. The goal of this work is to study and understand the heteroaggregation process both at particle scale to answer some of these fundamental queries about heteroaggregate structure and composition and also use that knowledge to advance the development of process scale models of heteroaggregation. The first aim of this study is to develop a population balance model (PBM) for the second stage of the heteroaggregation process or the agglomeration stage to predict final heteroaggregate particle size distribution (PSD). The model is also used to study the effect of different parameters on the important forces in the system such as electrostatic, van der Waals and hydration force to understand factors that lead to a faster agglomeration dynamics. The model is validated by comparing with experimentally measured final heteroaggregate PSD. The second objective of this work is to develop a model for the first stage of the heteroaggregation process or the layering stage where smaller nanoparticles layer on a larger microparticle and affect its properties, thereby making it more susceptible to aggregation with other such particles in the second stage of heteroaggregation. The model results are compared with the experimental study of monoaggregate structure performed by scanning electron microscopic imaging of the same. This is essential for understanding factors that regulate and limit layering, and in turn affect the monoaggregate distribution and consequently heteroaggregate PSD and the presence of different heteroaggregate regimes. Furthermore, these two models are combined to develop an integrated model for both stages of the heteroaggregation process. The progress of the system towards different heteroaggregation regimes have also been simulated and validated experimentally by studying the final heteroaggregate PSD. The third aim of this study is to investigate the adsorption characteristics of the heteroaggregates for the adsorption of oppositely charged heavy metal ions from single ion as well as mixed ion systems which represent real industrial wastewater more accurately than commonly studied single ion systems. The adsorption capacities of the heteroaggregates from three different regimes are also compared with the adsorption characteristics of the individual components of the heteroaggregates to see if the heteroaggregates offer an advantage over the individual adsorbents. The bio-friendly nature, oppositely charged components and an adsorption capacity comparable to that of industrially popular adsorbents make this system a good choice to replace commonly used adsorbents in the future. This study is expected to advance the field of heteroaggregation by answering some of its most fundamental questions and at the same time aid in the utilization of this knowledge to progress towards the production and use of heteroaggregates in real life applications.
Subject (authority = RUETD)
Topic
Chemical and Biochemical Engineering
Subject (authority = ETD-LCSH)
Topic
Aggregation (Chemistry)
RelatedItem (type = host)
TitleInfo
Title
Rutgers University Electronic Theses and Dissertations
Identifier (type = RULIB)
ETD
Identifier
ETD_9487
PhysicalDescription
Form (authority = gmd)
electronic resource
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application/pdf
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text/xml
Extent
1 online resource (116 pages : illustrations)
Note (type = degree)
Ph.D.
Note (type = bibliography)
Includes bibliographical references
Note (type = statement of responsibility)
by Anik Kumar Chaturbedi
RelatedItem (type = host)
TitleInfo
Title
School of Graduate Studies Electronic Theses and Dissertations
Identifier (type = local)
rucore10001600001
Location
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NjNbRU
Identifier (type = doi)
doi:10.7282/t3-w8qe-8850
Genre (authority = ExL-Esploro)
ETD doctoral
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Rights

RightsDeclaration (ID = rulibRdec0006)
The author owns the copyright to this work.
RightsHolder (type = personal)
Name
FamilyName
Chaturbedi
GivenName
Anik
MiddleName
Kumar
Role
Copyright Holder
RightsEvent
Type
Permission or license
DateTime (encoding = w3cdtf); (qualifier = exact); (point = start)
2019-01-04 11:55:37
AssociatedEntity
Name
Anik Chaturbedi
Role
Copyright holder
Affiliation
Rutgers University. School of Graduate Studies
AssociatedObject
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Author Agreement License
Detail
I hereby grant to the Rutgers University Libraries and to my school the non-exclusive right to archive, reproduce and distribute my thesis or dissertation, in whole or in part, and/or my abstract, in whole or in part, in and from an electronic format, subject to the release date subsequently stipulated in this submittal form and approved by my school. I represent and stipulate that the thesis or dissertation and its abstract are my original work, that they do not infringe or violate any rights of others, and that I make these grants as the sole owner of the rights to my thesis or dissertation and its abstract. I represent that I have obtained written permissions, when necessary, from the owner(s) of each third party copyrighted matter to be included in my thesis or dissertation and will supply copies of such upon request by my school. I acknowledge that RU ETD and my school will not distribute my thesis or dissertation or its abstract if, in their reasonable judgment, they believe all such rights have not been secured. I acknowledge that I retain ownership rights to the copyright of my work. I also retain the right to use all or part of this thesis or dissertation in future works, such as articles or books.
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Type
Embargo
DateTime (encoding = w3cdtf); (qualifier = exact); (point = start)
2019-01-31
DateTime (encoding = w3cdtf); (qualifier = exact); (point = end)
2020-01-31
Detail
Access to this PDF has been restricted at the author's request. It will be publicly available after January 31st, 2020.
Copyright
Status
Copyright protected
Availability
Status
Open
Reason
Permission or license
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