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    A renewable biosorbent material for green decontamination of heavy metal pollution from aquatic medium: a case study on manganese removal
    (Taylor & Francis Inc, 2021) Deniz, Fatih; Tezel Ersanli, Elif
    In this study, a renewable biosorbent material was prepared from biological waste of widespread coastal plant,Zostera marinaand employed for the biosorption of heavy metal pollution from water environment in green way. Manganese was selected as a model heavy metal to evaluate the treatment efficiency of prepared biosorbent. The batch biosorption behavior of biosorbent was investigated by the characterization, parameters evaluation, kinetic and equilibrium studies. The characterization study showed that the biosorbent has a rough surface and various binding groups for the heavy metal ions. The heavy metal concentration of 30 mg L-1, time of 60 min, pH of 6 and biosorbent amount of 10 mg were determined as the optimum biosorption conditions. The pseudo-second-order equation was found to be the best among kinetic models applied. The equilibrium data were best explained by Freundlich isotherm. The maximum biosorption efficiency based on Langmuir model was predicted as 58.426 mg g(-1). Hence, the current work presents a renewable alternative biosorbent substance for the green treatment of heavy metal pollution from water medium.
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    Öğe
    An Effectual Biosorbent Substance for Removal of Manganese Ions from Aquatic Environment: A Promising Environmental Remediation Study with Activated Coastal Waste of Zostera marina Plant
    (Hindawi Ltd, 2020) Deniz, Fatih; Tezel Ersanli, Elif
    In the present research paper, a biosorptive remediation practice for an aqueous medium sample polluted with manganese ions was implemented using the activated coastal waste of the Zostera marinaplant. This is the first report in the literature on the utilization of current modified biological waste as a biosorbent substance for the removal of manganese ions from the water environment. The analyses of biosorbent characterization, environmental condition, kinetic, equilibrium, and comparison were performed to introduce the ability of prepared biosorbent for the removal of manganese from the aquatic medium. The biosorbent matter has a rough surface with numerous cavities and cracks and various functional groups for the biosorption of manganese. The environmental conditions significantly affected the manganese purification process, and the optimum working conditions were determined to be biosorbent quantity of 10 mg, pH of 6, manganese concentration of 30 mg L-1, and time of 60 min. The pseudo-second-order model best explained the kinetic data of biosorption operation. The biosorption equilibrium data were best described by the Freundlich isotherm. According to the Langmuir equilibrium model, the maximum purification potency was estimated to be 120.6 mg g(-1). The comparison work revealed that the activated coastal waste of the Z.marinaplant could be utilized as an effectual and promising biosorbent substance for the remediation of an aquatic environment contaminated with manganese ions.
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    Öğe
    Ecological and Statistical Evaluation of Algal Flora and Water Quality of Karasu Stream
    (Kahramanmaras Sutcu Imam Univ, 2017) Tezel Ersanli, Elif; Ozturk, Ridvan
    The ecological and statistical evaluation of algal flora and water quality in Karasu Stream (Sinop, Turkey) were investigated from May of 2013 to April of 2014. A total of 70 taxa were identified, including Cyanophyta, Bacillariophyta, Charophyta, Chlorophyta, Dinoflagellata and Euglenozoa. The Bacillariophyta was dominant taxa in terms of both population density and number of species in the stream. It was followed by Chlorophyta, which was important in the phytoplankton at the end of the summer, autumn and the early winter. The positive correlations between Bacillariophyta with pH and nitrate; Chlorophyta with conductivity and silica; Cyanobacteria with conductivity, organic matter and nitrate; Charophyta with temperature and pH; Euglenozoa with total hardness were determined. Temperature was strongly positively correlated with pH and organic matter while dissolved oxygen was strongly negatively correlated with organic matter. Results indicated that the water was in the category of hard and moderately hard water; moderately polluted and sustaned slightly alkaline character.