Ammonia-Nitrogen Recovery from Synthetic Solution using Agricultural Waste Fibers

In this study, modification of Empty Fruit Bunch (EFB) fibers as a means to recover ammonianitrogen from a synthetic solution was investigated. Methods: The EFB fiber was modified using sodium hydroxide.Adsorption-desorption studies of ammonia nitrogen into the modified EFB fiber were investigated Findings: Theincrease in adsorption capacity was found to be proportional with the increase of pH up to 7, temperature and ammoniaconcentration. The maximum adsorption capacity is 0.53-10.89 mg/g. The attachment of ammonia nitrogen involves ionexchange-chemisorption. The maximum desorption capacity of 0.0999 mg/g. Applications: This study can be used as abaseline for designing a low cost adsorbent system for ammonia nitrogen recovery drainage and industrial wastewater aswell as EFBs-palm oil mill effluent composting

Heavy metal accumulation in the leaves, stem and root of the invasive submerged macrophyte Myriophyllum spicatum L. (Haloragaceae): an example of Kadin Creek (Mugla, Turkey)

In this study, the existence of heavy metals such as chromium (Cr), arsenic (As), cadmium (Cd), mercury (Hg) and lead (Pb) their distribution in the organs of plant and their bioaccumulation rates in water samples and Myriophyllum spicatum which were collected from the Kadin Creek in seasonal periods between 2011 and 2012 were analyzed. Heavy metal concentrations in the mineralized plant and water samples were determined with Inductive coupled plasma with mass spectroscopy (ICP-MS). Results showed the maximum heavy metal concentrations, in the root and minimum heavy metal concentrations, except chromium, in the stem. The distribution of heavy metals As, Cd, Hg and Pb was in the form of root > leaf > stem; the distribution of Cr was in the root > stem > leaf. There was a strong negative correlation between the suspended solid matter and heavy metal concentrations in the plant tissues. Heavy metal accumulation showed increase generally in fall. Heavy metals in the water were sorted as Pb > Cr > As > Hg > Cd by their mean concentrations. According to the factor data of bioconcentration, the order of heavy metal accumulation in the plant was As > Cr > Pb > Hg > Cd

The influence of a coal-fired power plant in Turkey on the chemical composition of rain water in a certain region

WOS: 000247095200020PubMed ID: 17057977In this study, the chemical composition of the rainwater in Yatagan, which is a region surrounding a coal power plant was investigated from February to April 2002. Rainwater samples were obtained from Yatagan, located northwest of Mugla City in Turkey. pH values and concentrations of major ions (Ca2+, Na+, K+, SO42-, NO3-, NH4+) in the rainwater samples were analyzed. The pH varied from 5.1 to 7.9 with an average of 6.7 which was in alkaline range considering 5.6 as the neutral pH of cloud water in equilibrium with atmospheric CO2. In the total of 30 rain events, only three events were observed with water in the acidic range ( SO42- 4 > Na > NH4+ > NO3- > K+ > H+. The anion and cation concentrations in the rainwater samples showed a high sulphate concentration (131 mu Eq/l), as well as high sodium (40 mu Eq/l) and calcium (298 mu Eq/l) concentrations. These values indicate that one probable source of the high sodium concentration is fly ash, after the coal burning process SO42- and the power plant can be effective on level 4 concentrations in rainwater. In addition, the dust-rich local and surrounding limestone environment might have caused the high concentration of Ca (2+) in rainwater of the Yatagan Basin. Due to a large contribution of these cations to the sulphate neutralization action, the rainwater of this region displays only a moderate acidity, which does not cause significant environmental impact

Chemical fractions of toxic metals and assessment of risks on the environment and health in Mugla topsoils

In the current study, the chemical fractions of Pb and Cd and total concentrations of these metals in topsoil samples which were collected between 2016 and 2017 in the center of Mugla, which is a small agricultural city in the Aegean Region of Turkey, were determined. Contamination, environmental, and potential human health risks indices were calculated in topsoil samples for Cd and Pb. In order to determine the exchangeable, reducible, oxidizable, and residual fractions of Cd and Pb in topsoil samples, the modified BCR chemical sequential extraction procedure was used. According to contamination and environmental risk indices, only Cd could pose a serious risk for the center, but Pb had no risk. But according to potential human health risk indices in the topsoil samples, no harm to human health was determined for both metals. The results of the study showed that total concentrations of Cd in the topsoil samples in all the locations of the center of Mugla had a uniform distribution. However, the chemical fractions of the metals did not show a uniform distribution and very different fraction values were obtained for Cd and Pb in each location of the city. In addition, it was determined that the concentrations of Cd in the topsoil samples exceeded the maximum permissible limits for some international soil quality guidelines but the concentration of Pb in topsoil samples did not exceed these limit values

Removal of Cu (II) from aqueous solutions in a closed recirculating water system using cotton fabrics with nano-sized activated carbon

Региональные экологические проблемы: экологический мониторинг и менеджментWaste water occurring as a result of industrial activities is very dangerous to living organisms because of having highly toxic substances, and heavy metals. Moreover, it contains high amount of copper compounds. Various methods, such as chemical precipitation, ultrafiltration, reverse osmosis, ion exchange, biological processes and adsorption are used to eliminate and remove copper ions inside the waste water. Closed recirculating systems may be developed as an alternative to flow through systems in many industrial activities to remove heavy metals = Сточные воды, возникающие в результате промышленной деятельности, очень опасны для живых организмов из-за наличия высокотоксичных веществ и тяжелых металлов. Кроме того, они содержат большое количество соединений меди. Для устранения и удаления ионов меди внутри сточных вод используются различные методы, такие как химическое осаждение, ультрафильтрация, обратный осмос, ионный обмен, биологические процессы и адсорбция. Замкнутые рециркуляционные системы могут быть разработаны в качестве альтернативы потоку через системы во многих промышленных мероприятиях по удалению тяжелых металло