Altın, Ahmet | Tecer, Selcen | Tecer, Lokman | Altın, Süreyya | Kahraman, Bekir Fatih

Proceedings | 2014 | 4TH WORLD CONFERENCE ON LEARNING TEACHING AND EDUCATIONAL LEADERSHIP (WCLTA-2013)141 , pp.1208 - 1214

In this study, secondary school students' awareness of environmental issues and problems and the level of their active participation in environmental activities have been identified, and the effects of some factors as family school and media on their environmental awareness and active participation have been investigated. The study was carried out in Balikesir city centre by conducting a survey on senior students consisting of 6 classes from three secondary schools which have different demographic and socio-economic levels. The results of the study showed a high level of environmental awareness among participant students. However, i . . .t is understood that environmental disclosures made in schools are insufficient and the participation level of students to environmental activities is low. Students rather gain experiences in the field of environment from mass media (i.e. audio, printed and visual media). It is revealed that female students have a higher level of environmental awareness and active participation level. In addition, when family income and family education level increases, environmental awareness and active participation level of students also increases. (C) 2014 Published by Elsevier Ltd Daha fazlası Daha az

Alaydın, Elif | Demirel, Gülçin | Altın, Süreyya | Altın, Ahmet

Proceedings | 2014 | 4TH WORLD CONFERENCE ON LEARNING TEACHING AND EDUCATIONAL LEADERSHIP (WCLTA-2013)141 , pp.1150 - 1155

The number of environmentally conscious individuals in society can be raised by increasing environmental education quality in primary schools. Starting studies about environment in the childhood years is very important. In this study, the knowledge and skill levels of primary school students in Zonguldak about waste recycling was determined, and the participation levels of theirs into recycling activities was measured. For this aim, the third and fourth grade primary school students were identified as a target group of the study, and a questionnaire assessing the impact of the parents' socio-economic structures and education status . . .on environmental awareness of theirs was prepared. The results were evaluated to determine the strengths and weaknesses of environmental education of the students, statistically. The questionnaire was conducted in three elementary schools having different social and economic levels. Questions in the first, second and last parts of the questionnaire relate with the demographic characteristics of students families, the environmental awareness of the students, and the participation of students into recycling activities, respectively. The survey reviews were carried out with a statistical program and differences between the schools were determined by using one way ANOVA test. (C) 2014 The Authors. Published by Elsevier Ltd Daha fazlası Daha az

Altın, Süreyya | Yıldırım, Yılmaz | Altın, Ahmet

Article | 2010 | HYDROMETALLURGY103 ( 01.Apr ) , pp.144 - 149

Toxic metals from industrial wastewaters are an important environmental issue. The use of supported liquid membrane processes has gained momentum in recent years, as it allows the reuse of water and toxic metals. The aim of this study is to investigate the active transport of silver ion through a supported liquid membrane (micro-porous Fluoropore PTFE) of DC18C6 (Dicyclohexano18crown6) in toluene under various experimental conditions. For this purpose, the effects of various parameters including binary carriers, carrier concentration, feed phase concentration, the nature and concentration of stripping agents in the stripping phase a . . .nd flow rates of feed and stripping phases on transport efficiency were also investigated. The maximum transport efficiency was observed at the following conditions: flow rates of 50 mL/min in both phases, 0.05 M DC18C6 in toluene as carrier solution. 50 ppm Ag(+) dissolved in 0.015 M HNO(3) as feed solution and 0.08 M Na(2)S(2)O(3) as stripping solution Optimum operation time was determined as 240 min. Under these conditions, 94% of the silver ions were transported from the feed phase to the membrane phase. However, the transport rate from the membrane phase to the stripping phase remained at approximately 81%. (C) 2010 Elsevier B.V. All rights reserved Daha fazlası Daha az

Altın, Ahmet | Değirmenci, Mustafa

Article | 2005 | SCIENCE OF THE TOTAL ENVIRONMENT337 ( 01.Mar ) , pp.1 - 10

Electrokinetic remediation is a very effective method to remove metal from fine-grained soils having low adsorption and buffering capacity. However, remediation of soil having high alkali and adsorption capacity via the electrokinetic method is a very difficult process. Therefore, enhancement techniques are required for use in these soil types. In this study, the effect of the presence of minerals having high alkali and cation exchange capacity in natural soil polluted with lead (II) was investigated by means of the efficiency of electrokinetic remediation method. Natural soil samples containing clinoptilolite, gypsum and calcite mi . . .nerals were used in experimental studies. Moreover, a sample containing kaolinite minerals was studied to compare with the results obtained from other samples. Best results for soils bearing alkali and high sorption capacity minerals were obtained upon addition of 3 mol AcH and application of 20 V constant potential after a remediation period of 220 h. In these test conditions, lead (II) removal efficiencies for these samples varied between 60% and 70% up to 0.55 normalized distance. Under the same conditions, removal efficiencies in kaolinite sample varied between 50% and 95% up to 0.9 normalized distance. (C) 2004 Elsevier B.V All rights reserved Daha fazlası Daha az