The journal of energy and environmental science – photon journal brain anoxia

Thesis to

Develop a formula for a solar energy system in a building (mainly devices

Requiring low power such as lights, fans and water heaters) in india, which is

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Power, sources.

Copper removal from aqueous solution using mixed mineral systems injected with zinc sulfide in sulfidic- anoxic conditions II. The role of solution composition and ageing

D.E. Egirani(a)*, J.E. Andrews(b), A.R. Baker(b)

A faculty of science,niger delta university, wilberforce island, nigeria

B schoolof environmental sciences, university of east anglia, norwich, UK


Keywords: ageing, copper,

Particle concentration, mixed minerals, zinc sulfide

Citation: egirani, D.E.,andrews, J.E., baker A.R., 2014.Brain anoxia copper removal from aqueous solution usingmixed mineral systems injected with zinc sulfide in sulfidic- anoxic conditionsii. The role of solution composition and ageing. The journal of energy andenvironmental science. Photon 128, 457-466.

Photon ignitor: ISJN17846372D679823042014

Graphical abstract:

Abstract

Pollutants,

Especially heavy metals cu inclusive discharged by acid mine drainage and

Wastewater treatment are the major causes of degraded stream water chemistry

(ridge and sedlak, 2004). Limited studies on cu removal exist but the use of

Mixed mineral systems injected with zinc sulfide under sulfidic-anoxic

Condition is a new dimension of research (egirani et al., 2013). This study investigates

brain anoxia

Cu removal onto binary mixed mineral sorbents from simulated wastewater

Relevant to effluents. Batch mode study conducted at room temperature involves

Injecting zinc sulfide into mineral systems of kaolinite, montmorillonite, goethite

And their mixtures. Variables investigated include ph, initial metal

Concentration, solid concentration and residence time. The results indicate

That all mineral systems but goethitemontmorillonite exhibits a linear increase

In cu sorption as ph increases. Sorption capacity increases with metal

Concentration. Some mineral systems neither demonstrated promotive nor

Nonpromotive sorption of cu over the range of particleconcentration

Investigated. Cu sorption exhibit a complex behavior over the range of

brain anoxia

Residence time (ageing) investigated. Sorption behavior is due to the presence

Of different reactive sites. Studies on solution composition and longer

Residence time under complete oxic condition are required to ascertain the

Effects of different aqueous environments on cu removal.

Copper removal from aqueous solution using mixed mineral systems injected with zinc sulfide in sulfidic- anoxic conditions I: reactivity and removal kinetics

D.E. Egirani(a)*, J.E. Andrews(b), A.R. Baker(b)

A faculty of science,niger delta university, wilberforce island, nigeria

B schoolof environmental sciences, university of east anglia, norwich, UK

Thomas edison award-2014

Keywords: copper, kinetics,

Mixed minerals, zinc sulfide, reaction

brain anoxia

Citation: egirani D.E., andrews J.E., baker A.R., 2014.

Copper removal from aqueous solution using mixed mineral

Systems injected with zinc sulfide in sulfidic- anoxic conditionsi: reactivity and removal kinetics. The journal of energy and environmental science.Photon 128, 467-478.

Photon ignitor: ISJN43821729D679724042014

Abstract

Anthropogenic

Activities have increased the prevalence and occurrence of toxic elements such as

Cu into the aqueous environment (garcĂ­a- lorenzo et al., 2012). Limited studies

On cu removal exist but the use of mixed mineral systems injected with zinc

Sulfide under sulfidic-anoxic condition is a new dimension of research (egirani

Et al., 2013). Batch mode experiments were conducted at room temperature to

brain anoxia

Investigate the reactivity and removal kinetics of cu onto mixed mineral systems

Injected with zinc sulfide from aqueous solution under sulfidic-anoxic

Condition. The sorbents used were kaolinite, montmorillonite, goethite, their

Mixtures and zinc sulfide as an injected sulfidic-anoxic mineral suspension.

Using an empirical model derived from freundlich model isotherm, the results

Demonstrate a difference from previous research in the sense that proton coefficient

For all single mineral systems except goethite is greater than 1.5. Solution

Speciation indicates saturation to zinc sulfide and undersaturation to hydrogen

Sulfide and zinc hydroxide species. Complex changes in the behavior of cu interaction

brain anoxia

With mixed mineral systems may be attributed to the presence of thiol and

Hydroxyl reactive sites in solution. Studies on reactions and kinetics under

Complete oxic condition are required to ascertain the effects of different

Aqueous environments on cu removal.