Investigation of nonylphenol and nonylphenol ethoxylates in sewage sludge samples from a metropolitan wastewater treatment plant in Turkey

2015-01-01
Omeroglu, Seçil
Murdoch, Fadime Kara
Sanin, Faika Dilek
Nonylphenol ethoxylates (NPEOs) have drawn significant attention within the last decade for both scientific and legislative reasons. In Turkey, the Regulation Regarding the Use of Domestic and Urban Sludges on Land states a limit value for the sum of nonylphenol (NP), nonylphenol monoethoxylate (NP1EO) and nonylphenol diethoxylate (NP2EO) as NPE (NPE=NP+NP1EO+NP2EO). Unfortunately a standard method for the determination of these chemicals has not been yet set by the authorities and no data exists about the concentrations of NP and NPEOs in sewage sludge in Turkey. The aim of this study is to propose simple and easily applicable extraction and measurement techniques for 4-n-nonylphenol (4-n-NP), NP, NP1EO and NP2EO in sewage sludge samples and investigate the year round concentrations in a Metropolitan Wastewater Treatment Plant (WWTP) in Turkey.

Suggestions

Synthesis of dioxin & tetra aryl pyrazine derivatives and their applications
Okyar, Burcu; Özçubukçu, Salih; Günbaş, Emrullah Görkem; Department of Chemistry (2019)
Aggregation induced emission (AIE) luminogens have attracted great attention in various disciplines of science in last decades. The photophysical properties and structural design of this type of luminogens make it possible to have large variety of applications in fluorescence sensors, cell imaging, microstructures aggregate and electroluminescence devices etc. All these studies promote researchers to find alternative AIE luminogens and also different application areas of AIE luminogen systems. 2,3,5,6-tetra...
Investigation of environmental literacy of sixth grades at a private school
İstanbullu, Rüveyde Aslı; Teksöz, Gaye; Department of Elementary Science and Mathematics Education (2008)
Purpose of this study was to investigate environmental literacy of 6th grade students at a private school. In detail of study it is also investigated that how mothers’ educational background on environmental literacy dimensions (knowledge, attitude, use and concern) and besides, relationship between environmental background characteristics and environmental literacy dimensions. The study was carried out during the fall semester of the 2007-2008 academic year. The sample of study was chosen from an accessibl...
Analyses on the Causality in Carbon Emission with respect to Economic Growth and Education
ÜNLÜ, KAMİL DEMİRBERK; Kestel, Sevtap Ayşe (2017-01-01)
This paper investigates the association between the level of carbon emission (CO2), economic growth and scholarly education levels in the countries chosen according to some specific characteristics using multivariate time series approach. It considers the impact of GDP and education enrollment, as a proxy of human capital, on the level of CO2 for the countries classified according to their economic developments and regional distribution. The analyses are assessed in three different cases two of which consid...
MEASUREMENT OF SOLAR RADIATION IN ANKARA, TURKEY
Caglar, Ahmet; Yamali, Cemil; Baker, Derek Keıth; KAFTANOĞLU, BİLGİN (2013-01-01)
The solar energy potential of Ankara, Turkey, (39.89 degrees N, 32.78 degrees E) has been investigated using the measurements of global and beam radiation over the period May 2008 to May 2009. Surface air temperature was also measured and variation in clearness index evaluated over this period. Global and beam radiations have been analyzed using hourly, daily and monthly averages obtained from 1-minute averages of recorded data. Results show that annual average daily global and beam radiations were 17.04 an...
Synthesis of bistriphenylamine and benzodithiophene based random conjugated polymers for organic photovoltaic applications
Çetin, Aslı; Çırpan, Ali; Department of Chemistry (2018)
Nowadays, traditional fossil fuels have become unable to compensate huge energy demand of the world due to the population increasing day by day and bringing about destructive greenhouse effect. Owing to all of these problems, renewable energy sources such as solar energy not only can be candidate for the solution of this expanded energy need but also can protect the earth by reducing the production of greenhouse gas. In this study, electronic, optical features and photovoltaic applications of two novel orga...
Citation Formats
S. Omeroglu, F. K. Murdoch, and F. D. Sanin, “Investigation of nonylphenol and nonylphenol ethoxylates in sewage sludge samples from a metropolitan wastewater treatment plant in Turkey,” TALANTA, pp. 650–655, 2015, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/48257.