TUTDoR

Okonkwo, J. O.

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Date: 2014/09/11
Subject: PBDEs | Eggshell
Language: en
Type: Text
Identifier: tut:2928
Description: This study was undertaken to assess the levels of eight PBDE congeners, namely: PBDE-17, 47, 100, 99, 154, 153, 183 and 209 in eggshells of Southern Ground-Hornbill (SGH) Bucorvus leadbeateri and Watt ... More
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Date: 2014/08/12
Language: en
Type: Text
Identifier: tut:3216
Description: Polybrominated diphenyl ethers (PBDEs) are known to be persistent, endocrine disruptors and bioaccumulative and can cause adverse health effects in ani- mals and humans. In this study, river and landf ... 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: 2012-06-01
Type: Text
Identifier: tut:1422
Description: The concentration of mercury vapour in ambient air is routinely determined using specialised instruments. As an economical alternative, actively pumped Hopcalite sorbent tubes can be used to trap atmo ... 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: 2010-04-18
Type: Text
Identifier: tut:1604
Description: The environmental impact of mining and other industrial activities on land and water quality can affect human health as well as disturb the ecological system (Chang, 1996). Consequently, over the last ... More
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Date: 2010-04-13
Type: Text
Identifier: tut:1607
Description: Copper is a widely used metal which is also an essential micronutrient for human life. This metal, however, can be toxic to humans in high concentrations. The mining of copper has resulted in the cont ... More
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Date: 2010-04-13
Type: Text
Identifier: tut:1606
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-47, BDE-99 and BDE- ... 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: 2009-04-09
Type: Text
Identifier: tut:1577
Description: Surface water and sediment samples collected from Jukskei River in South Africa, were subjected to different extraction techniques, liquid–liquid (LLE), solidphase extraction (SPE), activated carbon e ... 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: 2009
Language: en
Type: Text
Identifier: tut:3304
Description: Mn in street dust and soil from selected roads was studied to assess the contribution of combustion of vehicular methylcyclopentadienyl manganese tricarbonyl (MMT) to Mn levels and distribution in Pre ... More
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Date: 2008-09-09
Type: Text
Identifier: tut:1583
Description: In this study, various physicochemical parameters were evaluated for maize tassel, a novel adsorbent. The Brunauer–Emmett–Teller (BET) isotherm was used to experimentally model N2-adsorption data (up ... More
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