Adsorptive Elimination of an Acidic Dye from Synthetic Wastewater using Yellow Green Algae along with Equilibrium Data Modelling

Sagar, Surabhi; Rastogi, Arshi

doi:10.5958/0974-4150.2018.00137.2

Cited by 9 publications

(4 citation statements)

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“…1443 cm -1 C-H bükülmesi olan fonksiyonel grupları, 1242 cm -1 C-OH fenolikleri, 1022 cm -1 C=O gerilmesi ve 720 cm -1 CO3 -2 'ı tanımlamaktadır [38], [44]. TC ile biyosorpsiyondan sonra, karboksilat ve amin gruplarının tipik bantları daha yüksek ya da daha düşük dalga boylarında kaydırılmış veya kaybolmuştur [46].…”

Section: Alg Bazlı Biyokompozitin Karakterizasyonuunclassified

“…Bu grafiğe göre; ilk doğrusal bölge, makro gözenek difüzyonuna sahip hızlı biyosorpsiyonu, ikinci doğrusal bölge ise mikro gözenek difüzyonuna sahip nispeten daha yavaş ve kademeli bir denge biyosorpsiyon işlemini, üçüncü doğrusal gölge ise denge durumunu göstermektedir [58]. Langmuir, Freundlich ve D-R için doğrusal olmayan eşitlikler sırasıyla aşağıda verilmiştir [38]. 6) q e = q D−R e −(βɛ 2 ) (7)…”

Section: Tc Biyosorpsiyonuna Biyokompozit Miktarının Etkisiunclassified

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Algae based green biocomposites for tetracycline removal from aqueous solutions: kinetic, equilibrium and thermodynamic studies

Güler,

Türkay

2023

Pamukkale J Eng Sci

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Bu çalışmada, aljinat bazı kullanılarak Spirulina sp. biyokütlesinden boncukların geliştirilmesi ve sudaki tetrasiklinin giderimi için adsorbent potansiyellerinin değerlendirilmesi amaçlanmıştır. Bu amaçla biyokompozitin yeşil sentezi yapılmış ve karakterize edilmiştir. Kesikli sistemde yürütülen giderim çalışmalarında; tetrasiklin giderim verimine; çözelti pH'ının, biyokompozit miktarının, temas süresinin ve farklı sıcaklıklarda farklı başlangıç kirletici konsantrasyonunun etkisi çalışılmıştır. İzoterm çalışmalarından elde edilen verilere Langmuir, Freundlich ve 𝐷 − 𝑅 izotermleri uygulanmıştır. 25, 35 ve 45 o C için Langmuir izoterminden elde edilen Qm değerleri sırasıyla 108.95 mg/g, 191.25 mg/g ve 404.75 mg/g olarak bulunmuştur. Elde edilen biyokompozit, yüksek tetrasiklin biyosorpsiyonu ile ilişkili olabilecek hidrofobikliğe ve çeşitli fonksiyonel gruplara (CH2, C-N, C-O, CO3 -2 vb.) sahiptir. Biyokompozitin yüksek Qm değerleri, π-π elektron-verici-alıcı etkileşimi ve fonksiyonel gruplar ile tetrasiklin molekülleri arasındaki kompleks oluşumu nedeniyledir. Tetrasiklin biyosorpsiyonu için determinasyon katsayıları dikkate alınarak yalancı ikinci derece model uygun bulunmuştur. Termodinamik verilerden; artan sıcaklıkla tetrasiklin biyosorpsiyonunun artması, biyosorpsiyon işleminin endotermik ve spontan bir yapıya sahip olduğunu göstermektedir. Sonuç olarak; sentezlenen alg bazlı yeşil biyokompozitin, tetrasiklini sulardan başarılı bir şekilde uzaklaştırmak için kullanılabileceği ortaya konulmuştur.This study aimed to develop beads from biomass and evaluate their adsorbent potential for tetracycline removal from water. For this purpose, a green synthesis of the biocomposite was made and characterized. In the removal studies carried out in the batch system; the effects of solution pH, amount of biocomposite, contact time, and different initial pollutant concentrations at different temperatures on the efficiency of tetracycline removal were studied. Langmuir, Freundlich, and D-R isotherms were applied to the data obtained from isotherm studies. Qm values obtained from Langmuir isotherm for 25, 35 and 45 o C were found to 108.95 mg/g, 191.25 mg/g and 404.75 mg/g, respectively. The resulting biocomposite had hydrophobicity and various functional groups (CH2, CN, CO, CO3 -2 vb.), which may be associated with high tetracycline biosorption. The high Qm values of the biocomposite are due to the π-π electron-donor-acceptor interaction and complex formation between functional groups and tetracycline molecules. Considering the determination coefficients for tetracycline biosorption, the pseudo-second order model was found suitable. From the thermodynamic data; the increase in tetracycline biosorption with increasing temperature indicates that the biosorption process has an endothermic and spontaneous nature. As a result; it has been demonstrated that the synthesized algae-based green biocomposite can be used to successfully remove tetracycline from water.

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Section: Alg Bazlı Biyokompozitin Karakterizasyonuunclassified

Section: Tc Biyosorpsiyonuna Biyokompozit Miktarının Etkisiunclassified

Algae based green biocomposites for tetracycline removal from aqueous solutions: kinetic, equilibrium and thermodynamic studies

Güler,

Türkay

2023

Pamukkale J Eng Sci

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“…riverside, etc.). This biomaterial was chosen for investigation because it has significant adsorption capabilities for methyl orange and methylene blue dyes, as indicated in our previous publications [16][17], and there are few studies on its applicability for heavy metal ion sequestration [18].…”

Section: Introductionmentioning

confidence: 99%

Bio-adsorption of copper (II) from synthetic wastewater using Vaucheria sp. Dead biomass

Rastogi

2022

Int J Pharm Chem

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The ability of the yellow-green alga Vaucheria sp. to remove Copper (II) from synthetic wastewater through the adsorption process was investigated in this communication. The pH of the solution, the adsorbent dose, the initial concentration of Cu (II) ions, the contact period, and the temperature are all factors that influenced Cu (II) sorption. The adsorption capacity at 5 pH, 80 minutes of contact time, and 318 K was calculated using the Langmuir adsorption model. By comparing the coefficient correlation (R2) values, both the Langmuir and Freundlich equations were found to fit the equilibrium data. The parameters (ΔGo, ΔHo, and ΔSo) were examined during thermodynamic tests at three distinct temperatures: 298, 308, and 318 K, suggesting that the process was sustained, spontaneous, and endothermic. Pseudo-second-order kinetic models accurately described adsorption kinetics when compared to pseudo-first-order kinetic models. Finally, the current research revealed that the bio-adsorption technique utilizing Vaucheria sp. alga could be an inexpensive and effective way to adsorb and remove Cu (II) metal ions from synthetic waste waters.

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“…Their cell wall offers a host of functional groups like carboxyl, sulphate, phosphate, amino and imidazoles associated with polysaccharides alginic acid and proteins for binding various pollutants [18]. Our lab has also earlier used algae as adsorbent for the removal of dyes [19,20]. In our continued interest, we have used abundantly available blue green alga Oscillatoria species for the removal of acid dye methyl orange from synthetic solutions.…”

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confidence: 99%

Evaluation of Equilibrium Isotherms and Kinetic Parameters for the Adsorption of Methyl Orange Dye onto Blue Green Algal Biomass

Sagar¹,

Rastogi²

2019

Asian J. Chem.

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Large amount of water is being continuously consumed by textile industries at different steps of dyeing, finishing etc. As there is a large consumption of water the pouring up of waste water into the environment is also unavoidable. This waste water from the industries is very rich in colour containing residue of dyes as major effluents. With the increase in the water pollution due to textile waste, the stringent restrictions on the hazardous organic contents of the industrial effluents is also increasing and hence it becomes important to remove these organic pollutants by proper treatment methods before being released to the water course. Generally, the dyes have stability towards light and oxidizing agents and are non-degradable in nature and this makes the selection of suitable method for dye removal complicated [1,2]. Various treatment techniques have been used for the removal of organic as well as inorganic substances from water, such as adsorption [3,4], photocatalytic degradation [5], electrochemical [6], membrane process [7], etc., but among these due to advantages like low cost, high

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Adsorptive Elimination of an Acidic Dye from Synthetic Wastewater using Yellow Green Algae along with Equilibrium Data Modelling

Cited by 9 publications

References 0 publications

Algae based green biocomposites for tetracycline removal from aqueous solutions: kinetic, equilibrium and thermodynamic studies

Algae based green biocomposites for tetracycline removal from aqueous solutions: kinetic, equilibrium and thermodynamic studies

Bio-adsorption of copper (II) from synthetic wastewater using Vaucheria sp. Dead biomass

Evaluation of Equilibrium Isotherms and Kinetic Parameters for the Adsorption of Methyl Orange Dye onto Blue Green Algal Biomass

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