Silica gel based new adsorbent having enhanced VOC dynamic adsorption/desorption performance

Kutluay, Sinan; Temel, Farabi

doi:10.1016/j.colsurfa.2020.125848

Cited by 75 publications

(16 citation statements)

References 84 publications

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“…The strong link between MB removal findings practically acquired and those estimated by the proposed quadratic model is supported by this finding. The non-significant p -values (0.4143) of the Lack of Fit provided evidence for the suitability of the developed model [ 36 ]. Commonly, variables that influence MB adsorption rate and seem to have p -values p < 0.05 are perceived to be statistically meaningless.…”

Section: Resultsmentioning

confidence: 99%

High-Surface-Area-Activated Carbon Derived from Mango Peels and Seeds Wastes via Microwave-Induced ZnCl2 Activation for Adsorption of Methylene Blue Dye Molecules: Statistical Optimization and Mechanism

et al. 2022

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In this study, Mango (Mangifera indica) seeds (MS) and peels (MP) seeds mixed fruit wastes were employed as a renewable precursor to synthesize high-surface-area-activated carbon (MSMPAC) by using microwave-induced ZnCl2 activation. Thus, the applicability of MSMPAC was evaluated towards the removal of cationic dye (methylene blue, MB) from an aqueous environment. The key adsorption factors, namely A: MSMPAC dose (0.02–0.1 g), B: pH (4–10), and C: time (5–15 min), were inspected using the desirability function of the Box-Behnken design (BBD). Thus, the adsorption isotherm data were found to correspond well with the Langmuir model with a maximum adsorption capacity of (232.8 mg/g). Moreover, the adsorption kinetics were consistent with both pseudo-first-order and pseudo-second-order models. The spontaneous and endothermic nature of MB adsorption on the MSMPAC surface could be inferred from the negative ∆G° values and positive value of ∆H°, respectively. Various mechanisms namely electrostatic forces, pore filling, π-π stacking, and H-bonding govern MB adsorption by the MSMPAC. This study demonstrates the utility of MS and MP as renewable precursors to produce high-surface area MSMPAC with a potential application towards the removal of cationic organic dyes such as MB.

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Section: Resultsmentioning

confidence: 99%

High-Surface-Area-Activated Carbon Derived from Mango Peels and Seeds Wastes via Microwave-Induced ZnCl2 Activation for Adsorption of Methylene Blue Dye Molecules: Statistical Optimization and Mechanism

et al. 2022

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“…Ayrıca, gaz halindeki benzen için 1.74 kJ/mol olarak hesaplanan E değeri (Dubinin-Radushkevich model sabiti) adsorpsiyon prosesinin fiziksel etkileşim mekanizması üzerinden gerçekleştiğini işaret etmektedir [37]. [40,41]. Öte yandan, adsorbe edici yüzey üzerinde kalıcı bağların oluşumu ve adsorbe edilen grupların tersinmez bir dönüşümünün gerçekleşmesinin nedeni olarak desorpsiyon/rejenerasyon proseslerinin tamamlanmaması olabilir.…”

Section: Gaz Halindeki Benzenin Manyetik Fe3o4/ds Nano-adsorbenti üZe...unclassified

“…Öte yandan, adsorbe edici yüzey üzerinde kalıcı bağların oluşumu ve adsorbe edilen grupların tersinmez bir dönüşümünün gerçekleşmesinin nedeni olarak desorpsiyon/rejenerasyon proseslerinin tamamlanmaması olabilir. Başka bir ifadeyle, desorbe olmayan bazı kimyasal bağlı adsorbatların gözenekleri tıkaması ve böylece kalıntı oluşumuna neden olması muhtemel bir sonuçtur [41,42]. Bu değerlendirmeler çerçevesinde, inovatif bir şekilde senetezlenen Fe3O4/DS nano-adsorbenti gaz halindeki benzen için mükemmel tekrar kullanılabilirliğe sahip olduğu bulundu, bu da nano-adsorbentin pratik uygulamalarda büyük potansiyele sahip olduğu anlamına gelir.…”

Section: Gaz Halindeki Benzenin Manyetik Fe3o4/ds Nano-adsorbenti üZe...unclassified

Production of Eco-Friendly Cellulosic Magnetic Nano-Adsorbent from Derik Halhali Olive Seed and Its Use in Benzene Removal

Kutluay

Ece

Şahi̇n

et al. 2021

Bitlis Eren Üniversitesi Fen Bilimleri Dergisi

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ÖzUçucu organik bir bileşik (UOB) olan benzen, kimyasal ve petrokimyasal gibi faaliyetlerle sanayiden ve endüstriden atmosfere salınmaktadır. Benzen, canlı sağlığı ve çevre için ağır kirliliklerden biri olup, kanserojen, mutajenik ve oldukça toksik polar olmayan bir kirleticidir. İnsan sağlığı ve ekolojik çevre için bir potansiyel tehlikedir. Bu sebeple benzenin bir kirletici olarak atmosferden uzaklaştırılması büyük önem taşımaktadır. Bu çevresel iyileştirme çalışmasında, Derik Halhalı zeytininin çekirdeği bir doğal selüloz (DS) kaynağı olarak manyetit (Fe3O4) modifikasyonunda kullanıldı. Başarıyla üretilen Fe3O4/DS nano-adsorbentin benzen giderimine karşı adsorpsiyon özellikleri incelendi. Birlikte çökeltme yöntemiyle elde edilen Fe3O4/DS nano-adsorbenti SEM-EDS, FTIR ve BET analizleri ile karakterize edildi. Benzen giderim prosesinde, benzen başlangıç konsantrasyonu, adsorbent miktarı, adsorpsiyon süresi ve adsorpsiyon sıcaklığı gibi farklı parametrelerin etkileri değerlendirildi. Optimum değerler olarak belirlenen 90 dakika adsorpsiyon süresi, 15 ppm benzen başlangıç konsantrasyonu, 100 mg adsorbent miktarı ve 25°C adsorpsiyon sıcaklığı gibi koşullar altında benzen adsorpsiyon kapasitesi 298.15 mg/g olarak bulundu. Bu sonuç, başarıyla üretilen Fe3O4/DS nano-adsorbentin UOB kirleticilerin giderimindeki uygulama potansiyelini ortaya koymaktadır. Öte yandan, Quasi-birinci-dereceden kinetik modeli takip eden gaz halindeki benzenin Fe3O4/DS nano-adsorbenti üzerine adsorpsiyon prosesi fiziksel adsorpsiyon mekanizmasını işaret etmektedir. Ayrıca, 1.74 kJ/mol olarak hesaplanan E değeri (Dubinin-Radushkevich model sabiti) adsorpsiyon prosesinin fiziksel etkileşim mekanizması üzerinden gerçekleştiğini desteklemektedir. Son olarak, beş döngüden sonra, Fe3O4/DS nano-adsorbentin %90.61'lik bir yeniden kullanım verimini koruduğu bulundu, bu da nano-adsorbentin pratik uygulamalarda büyük bir potansiyele sahip olduğu anlamına geliyor.

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“…Among the alternatives studied, adsorption is one of the most promising techniques for the capture of VOCs, since it has interesting characteristics in environmental terms, thanks to its cost-effectiveness, flexible operation and low energy consumption. Thus, the adsorption of this type of compound on porous materials has been studied as a promising alternative [ 3 , 4 , 5 ], which implies a very important challenge: the development of adsorbents selective toward specific adsorbates and thus overcoming the limitations of conventional adsorbents such as zeolites [ 6 , 7 , 8 ], activated carbons [ 9 , 10 , 11 , 12 , 13 ] and silica [ 14 , 15 ].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of the Metal–Organic Framework CIM-80 for Organic Compounds Adsorption

2022

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Metal–organic frameworks (MOF) are a new type of porous materials that have great potential for adsorption of voltaic organic compounds (VOCs). These types of materials composed of metal ions and organic ligands are easy to synthesize, have high surface areas, their surface chemistry can be adjusted to the desired application, and they can also have good chemical and thermal stability. Therefore, this work focuses on the synthesis of a highly hydrophobic MOF material called CIM-80, a porous material that is made up of the Al3+ cation and the mesaconate linker. This MOF has a B.E.T. of approximately 800 m2/g and has potential applications for the adsorption of hydrophobic organic compounds. However, its synthesis is expensive and very dirty. Therefore, we have studied the synthesis conditions necessary to achieve high synthesis yields (85%) and materials with high crystallinity and accessible porosity. To achieve these results, we have used urea as a mild deprotonation reagent and modulator as an alternative to NaOH, which is traditionally used for the synthesis of this MOF. Once the synthesis of this material was controlled, its adsorption/desorption behavior of water and organic compounds such as toluene, cyclohexane and m-xylene was studied by means of vapor adsorption isotherms. The results show the hydrophobic character of the material and the greater affinity the material has toward aliphatic compounds than toward aromatic ones, with toluene being the most adsorbed compound, followed by cyclohexane and m-xylene.

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Silica gel based new adsorbent having enhanced VOC dynamic adsorption/desorption performance

Cited by 75 publications

References 84 publications

High-Surface-Area-Activated Carbon Derived from Mango Peels and Seeds Wastes via Microwave-Induced ZnCl2 Activation for Adsorption of Methylene Blue Dye Molecules: Statistical Optimization and Mechanism

High-Surface-Area-Activated Carbon Derived from Mango Peels and Seeds Wastes via Microwave-Induced ZnCl2 Activation for Adsorption of Methylene Blue Dye Molecules: Statistical Optimization and Mechanism

Production of Eco-Friendly Cellulosic Magnetic Nano-Adsorbent from Derik Halhali Olive Seed and Its Use in Benzene Removal

Synthesis and Characterization of the Metal–Organic Framework CIM-80 for Organic Compounds Adsorption

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