TUTDoR

Okonkwo, J. O.

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Date: 2020/08/27
Language: en
Type: Text
Identifier: tut:6146
Description: The extreme persistence, bioaccumulative, and toxicity tendencies of per- and polyfluoroalkyl substances (PFAS) have contributed to the ever-increasing quest for effective and low-cost technologies fo ... More
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Date: 2020/08/20
Language: en
Type: Text
Identifier: tut:5379
Description: Organophosphate esters (OPEs) are esters of phosphoric acid that are increasingly used as plasticizers and by the flame-retardants industries as replacement for the regulated polybrominated diphenyl e ... More
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Date: 2016/04/20
Language: en
Type: Text
Identifier: tut:5403
Description: Polybrominated diphenyl ethers (PBDEs) are a group of organobromine compounds that are used as flame retardants in many commonly used products. Their presence has been confirmed in various environment ... More
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Date: 2016
Language: en
Type: Text
Identifier: tut:4905
Description: Cyanobacteria produce toxins which are hazardous to the health of people who are using water that is contaminated. The hazard quotient suggested by United States Environmental Protection Agency (USEPA ... More
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Date: December 2016
Language: en
Type: Text
Identifier: tut:5252
Description: Chemical precipitation with lime, the technology of choice for phosphate removal from contaminated waters, is expensive. In this study the feasibility of utilizing low-cost chemically activated maize ... More
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Date: 2015
Language: en
Type: Text
Identifier: tut:3020
Description: This article reports on the extraction and characterization of novel natural cellulose fibers obtained from the maize (tassel) plant. Cellulose was extracted from the agricultural residue (waste bioma ... More
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Date: 2014/12/30
Language: en
Type: Text
Identifier: tut:5777
Description: Rooibos (Aspalathus linearis) plants are cultivated for the production of the Rooibos tea. In this work, biosorption process of Pb(II) from aqueous solution on Rooibos shoot powder (RSP) was studied i ... More
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Date: 2014/01/02
Language: en
Type: Text
Identifier: tut:4509
Description: The use of Rooibos shoots, a natural adsorbent, for cadmium removal from wastewater is proposed. The effects of initial pH, adsorbent dosage, contact time, and initial concentration were investigated ... More
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Date: 2012/04/21
Language: en
Type: Text
Identifier: tut:5771
Description: The intention of this study was to explore the efficacy and feasibility for Cu (II) adsorption onto fixed bed column of maize tassel-PVA beads. The effects of flow rate and bed height were explored. T ... More
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Date: 2011/01/01
Language: en
Type: Text
Identifier: tut:5955
Description: Polymeric mediators have been used in biosensor development. However, the synthesis of the polymeric mediators is tedious. To reduce the cost of biosensors organic polymer constituents, there is a sea ... More
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Date: 2010-10-01
Type: Text
Identifier: tut:1558
Description: Problem statement: Major adsorbent materials used in heavy metal ion removal from polluted aqueous streams are expensive and difficult to regenerate. In this study, the possibility of using Zea mays t ... More
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Date: 2010/02/01
Language: en
Type: Text
Identifier: tut:4850
Description: Semi-continuous emissions monitors (SCEM) are widely used for the determination of atmospheric mercury. These sophisticated instruments perform nearly real-time measurements of atmospheric mercury. Ho ... More
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Date: 2009/02/10
Language: en
Type: Text
Identifier: tut:4979
Description: The objective of this study was to investigate the possibility of using maize tassel as an alternative adsorbent for the removal of chromium (VI) and cadmium (II) ions from aqueous solutions. The effe ... More
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Date: 2008/08/25
Language: en
Type: Text
Identifier: tut:4212
Description: In this study, the removal of Pb(II) from aqueous solutions by tassel powder was studied and optimised. Batch experimentswere conducted on simulated solutions using tassel powder adsorbent and the eff ... More
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Date: 2008/02/17
Language: en
Type: Text
Identifier: tut:4985
Description: The last few decades have seen dramatic growth in the scale of production and the use of polybrominated diphenyl ethers (PBDEs) as flame retardants. Consequently, PBDEs such as BDE -28, -47, -66, -71, ... More
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