Feryal Akbal

• Ondokuz Mayıs University

In this study, the main objective was to optimize hybrid processes to improve their environmental performance in the treatment of real textile effluents by reducing their pollution parameters. Thus, the treatment of textile effluents is essential in terms of environmental performance to neutralize or at least effectively reduce the high concentrati...

This study aims to improve the removal organic contaminants from biologically pre-treated textile wastewater using activated carbon (AC)–assisted Fenton oxidation. The optimum conditions for Fenton process were found to be pH 3.0, 2 mM Fe²⁺ and 10 mM H2O2. Reed activated carbon (RAC), produced from Phragmites australis, and commercial activated car...

Ultrasonic disintegration based on lysis‐cryptic growth improves sludge characteristics. Many factors affect ultrasonic disintegration of the excess sludge. This study aimed to provide better insight into ultrasonic disintegration effects on excess sludge at different energy levels, probes, and times. The results demonstrated that ultrasonic disint...

The removal efficiencies of Acid Red 337 dye were investigated by combining advanced oxidation processes based on radical dotOH and SO4radical dot− radicals. The photocatalytic oxidation processes were carried out at the natural pH (5.4) and acidic pH (3.0) values of the dye solution. In the experiments, iron (II) sulfate (Fe2+) and potassium ferri...

This study investigated the efficacy of modified biochar derived from pine nut shells (MPNBC) in removing Rhodamine B (RhB) through adsorption. The objective was to eliminate RhB from aqueous systems by employing agricultural wastes as an adsorbent. MPNBC was characterized using SEM, TGA, XRD, BET, and FTIR analyses, revealing a significant BET sur...

In this study, Fenton-based advanced oxidation processes (homogeneous and heterogeneous Fenton/photo-Fenton), were applied for advanced treatment of real textile wastewater. Fe2O3-sepiolite was used as a catalyst in the heterogeneous Fenton/photo-Fenton processes. Among the processes studied, heterogeneous photo-Fenton process showed highest colour...

In this study, photocatalytic oxidation of methylene blue (MB) and malachite green (MG) dyes was investigated using granular pure titanium dioxide and silicon‐doped granular titanium dioxide as photocatalysts. Both catalysts were used repeatedly throughout the photocatalytic oxidation experiments. The effect of initial dye and catalyst concentratio...

Detoxifying ecologically persistent dyes is vital for environmental and human well-being. Herein, Crabshell waste is transformed into porous carbon (CB900) through pyrolysis, achieving a remarkable removal rate of 90.5 % (CR-RR) and adsorption capacity (∼256.36 mg g−1, qCR). Employing XGBoost modeling, with a robust R2 ∼ 0.996, proved its superiori...

In the present study, coupling electro-Fenton (EF) and adsorption processes for textile industry wastewater remediation was investigated, in both batch and continuous flow modes. Sepiolite was used as an adsorbent in the coupled EF/adsorption processes. Various parameters such as reaction time, current intensity, Fe²⁺ concentration, sepiolite dose,...

The Black Sea is a closed basin surrounded by six countries and is the last spill point for the rivers from different watersheds. Due to these discharges from surrounding countries, the Black Sea is exposed to high and moderate pollution levels. Therefore, monitoring water quality changes in the mid-Black Sea coastal area is necessary to develop po...

In this study, the effectiveness of electro-Fenton (EF) technology for the advanced treatment of biologically treated textile wastewater using graphite electrodes was investigated. The performance of the EF process was evaluated in terms of colour, COD and TOC removal. In batch system, the influence of process parameters such as wastewater pH, curr...

This paper presents a synthesis of mesoporous silica (MS) from natural clay as a silica source using Pluronic L35 (EO11PO16EO11) as a structure-directing agent. The prepared material was characterized by XRD, X-ray fluorescence, thermogravimetric analysis, SEM, TEM, and N2 adsorption-desorption analyses. Then, mesoporous material was used for the r...

In the present work, sepiolite clay was assessed as an adsorbent for the removal of cationic (Methylene Blue: MB) and anionic (Direct Red-23: DR-23) dyes from aqueous media. Firstly, the sepiolite clay mineral was characterized using different instrumental techniques viz., XRD, SEM, EDX, FTIR, X-ray Fluorescence, and BET analysis. Thereafter, the a...

In this study, the SDS/CTAB@Mt composite as a novel adsorbent has been prepared via a facile synergistic effect of cationic surfactant (CTAB) and anionic surfactant (SDS) for the modification of montmorillonite, and it was utilized to remove malachite green (MG) from aqueous solutions. The structure and the morphology of the SDS/CTAB@Mt composite w...

In this study treatment of zinc plating wastewater by combination of electrocoagulation (EC) and ultrafiltration (UF) process was investigated. The effect of operating parameters such as wastewater pH, flow rate and membrane pore size on zinc removal was investigated to optimize EC-UF process. The results showed that zinc removal was pH dependent a...

In the present work, we synthesized successfully novel magnetic montmorillonite composite γ-Fe 2 O 3 @Mt by a facile co-precipitation method of Fe 2+ and Fe 3+ in alkaline solution in the presence of montmorillonite clay mineral. The structural, morphological and chemical properties of the γ-Fe 2 O 3 @Mt samples were characterized by Fourier transf...

In the present work, we synthesized successfully novel magnetic montmorillonite composite γ-Fe2O3@Mt by a facile co-precipitation method of Fe2+ and Fe3+ in alkaline solution in the presence of montmorillonite clay mineral. The structural, morphological and chemical properties of the γ-Fe2O3@Mt samples were characterized by Fourier transform infrar...

zet Bu çalışmada, Katı Atık Düzenli Depolama Sahası sızıntı suyundan zeolit (klinoptilolit) kullanılarak adsorpsiyon yöntemi ile amonyak giderimi çalışılmıştır. Çalışmada adsorbent olarak doğal (ham) zeolit ve NaCl ile şartlandırılmış zeolit kullanılmıştır. Adsorpsiyon işlemleri sonucunda en iyi amonyak giderim verimini sağlamak amacı ile adsorpsiy...

ICATES 2019 provides an ideal academic platform for researchers to present the latest research findings and describe emerging technologies, and directions in Engineering and Natural Sciences issues. The conference seeks to contribute to presenting novel research results in all aspects of Engineering, Technology and Natural Sciences. The conference...

In this work, adsorption kinetics, isotherms and mechanisms of two cationic dyes, Toluidine Blue (TB) and Crystal Violet (CV), on a Na-Montmorillonite Nano Clay (Na-MNC) have been experimentally and theoretically determined. The structure and the morphology of the Na-MNC were characterized by XRD, FTIR, SEM, EDAX and BET. High adsorption capacity w...

Presence of metals even at trace levels in natural waters pose sever health risks. Heavy metals are introduced to coastal and marine environments through a variety of sources and activities including sewage and industrial effluents where Black Sea is not different. However, metals behave differently in Black Sea as it an enclosed body. Coastal area...

This study compares ozonation (O3), iron coated zeolite catalyzed ozonation (ICZ–O3) and granular activated carbon catalyzed ozonation (GAC–O3) for removal of humic acid from an aqueous solution. The results were evaluated by the removal of DOC that specifies organic matter, UV254 absorbance, SUVA (Specific Ultraviolet Absorbance at 254 nm) and abs...

This study compares the performance of Fenton and electro-Fenton processes for phenol degradation. The effects of operational parameters such as initial pH, current density, concentration of phenol and hydrogen peroxide on phenol removal was investigated in electro-Fenton process. The degradation and mineralization efficiency increased with an incr...

The sludge disintegration technologies integrated into sludge handling units are pretreatment processes that reduce the sludge mass or to improve the sludge characteristics. The sludge disintegration technologies developed to reduce excess sludge are classified as mechanical disintegration, thermal disintegration, chemical or thermo-chemical disint...

The present study describes the removal of arsenite by iron oxide-coated pumice and iron oxide-coated sepiolite. Pumice and sepiolite were coated with iron oxide and used as adsorbents for the removal of arsenite from aqueous solution in batch experiments. Arsenite concentration decreased exponentially with time, and equilibrium was attained in 84...

The adsorptive properties of natural sepiolite in the removal of copper (Cu2+) from aqueous solution were investigated. The results show that the amount of adsorption of copper ion increases with initial copper concentration, contact time, and solution pH. The pseudo-first-order, pseudo-second-order, and Elovich models were used to describe the kin...

ABSTRACT During the last decades the Black Sea has experienced severe environmental degradation in terms of its biodiversity, habitats, recreational value and water quality. It has been exposed to natural and environmental fluctuations and more recently to strong anthropogenic stresses. The environmental crisis is a direct consequence of the incre...

In this study, the performance of electrocoagulation process in the treatment of metal plating wastewater was investigated using different combinations of aluminum (Al) and iron (Fe) electrodes. The effect of applied current, metal concentration, and treatment time on the metal removal efficiency was investigated. The results show that electrocoagu...

The aim of this study was to investigate the water and sediment quality in the mid-Black Sea coast of Turkey. The samples were collected from six stations during 2007. Investigated parameters were total carbon (TC), total inorganic carbon (TIC), total organic carbon (TOC), ammonium-nitrogen (NH4-N), nitrate-nitrogen (NO3-N), nitrite-nitrogen (NO2-N...

In this study arsenate [As(V)] removal from drinking water by coagulation process was investigated. Ferric chloride (FeCl 3.6H 2O) and ferrous sulfate (FeSO 4.7H 2O) were used as coagulant. The effects of major operating variables such as coagulant dose (1-30 mg/L) and pH (5.5-9.5) were investigated. Ferric chloride and ferrous sulfate were found a...

In this study, the decolorization of Levafix Brilliant Blue E-B by electrocoagulation method using aluminum and iron electrodes was investigated. The influence of the operating variables such as current density, initial pH, time of electrolysis, supporting electrolyte concentration on decolorization efficiency, and energy consumption was determined...

The aim of this study was to investigate the seasonal and spatial variations in surface water quality at the mid-Black Sea coast of Turkey. The samples were collected from ten monitoring stations including rivers and sea water during the years from 2007 to 2008. The samples were analyzed for 25 parameters: total carbon, total inorganic carbon, tota...

In this study, the photocatalytic degradation of commercial azo dye (Remazol Red 133) in the presence of titanium dioxide (TiO2) suspensions as photocatalyst was investigated. The effect of various operational parameters, such as pH of dye solution and catalyst concentration on the photocatalytic degradation process, was examined. The mineralizatio...

Removal of copper (Cu), chromium (Cr) and nickel (Ni) from metal plating wastewater by electrocoagulation with iron and aluminum electrodes with monopolar configurations was investigated. The influence of electrode material, current density, wastewater pH and conductivity on removal performance was explored. The results showed that metal removal in...

Copper (Cu), chromium (Cr), and nickel (Ni) removal from metal plating wastewater by electrocoagulation and chemical coagulation was investigated. Chemical coagulation was performed using either aluminum sulfate or ferric chloride, whereas electrocoagulation was done in an electrolytic cell using aluminum or iron electrodes. By chemical coagulation...

The photocatalytic degradation of methylene blue and methyl orange have been studied in the presence of titanium dioxide powder illuminated with a 300-W UV lamp. The effect of hydrogen peroxide on the degradation process was also determined. It was found that the color removal efficiency was affected by the concentration of dye, amount of TiO2 adde...

The adsorption of methylene blue and crystal violet on pumice powder samples of varying compositions was investigated using a batch adsorption technique. The effects of various experimental parameters, such as adsorbent dosage, initial dye concentration, and contact time, were also investigated. The extent of dye removal increased with decreased in...

In this study the sorption of phenol and 4-chlorophenol on pumice modified with the cationic surfactants hexadecyltrimethyl ammonium bromide (HDTMA) and benzyldimethyl tetradecylammonium chloride (BDTDA) was investigated. Experimental studies indicate that HDTMA-pumice and BDTDA-pumice have the capability to remove phenol and 4-chlorophenol from aq...

In this study photocatalytic degradation of phenol in the presence of UV irradiated TiO2 catalyst and H2O2 was investigated. Effects of TiO2 and H2O2 concentrations and pH on photocatalytic degradation were examined. The rate constants for photocatalytic degradation were evaluated as a function of TiO2 and H2O2 concentrations and pH of the solution...

Organoclays can be prepared by modification of the surface with a cationic surface active compound and used for the immobilisation or separation of non-polar contaminants from polluted waters. In this work pumice is used instead of clay material. Batch system experiments were performed for the modification of pumice surface with hexadecyltrimethyla...

Several rivers discharging to the Black sea in the Middle Black Sea Region contain nutrients and various anthropogenic contaminants. The aim of this study is to determine the seasonal variation of contaminant parameters of the rivers discharging form Samsun to the Black Sea. With this aim, organic and inorganic parameters were analyzed seasonally i...