Microwave-assisted functionalization of Rosa Canina-L fruits activated carbon with tetraethylenepentamine and its adsorption behavior toward Ni(II) in aqueous solution: Kinetic, equilibrium and thermodynamic studies

Ghasemi, Maryam; Khosroshahy, Mohammad Zeinaly; Abbasabadi, Arash Bavand; Ghasemi, Nahid; Javadian, Hamedreza; Fattahi, Mehdi

doi:10.1016/j.powtec.2014.12.005

Cited by 54 publications

(16 citation statements)

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“…The pollutants with a certain size and shape can be easily removed through adsorption as these pollutants have easy access to the pores of the porous adsorbents. Activated carbons are the most widespread adsorbent materials, but they have several deficiencies, including slow pollutant uptake (of the order of hours) and poor removal of many relatively hydrophilic micropollutants …”

Section: Water Treatmentmentioning

confidence: 99%

Porous Polymers as Multifunctional Material Platforms toward Task‐Specific Applications

et al. 2018

Advanced Materials

356

245

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have triggered serious threats to the survival and development of mankind. Consequently, exploring novel materials with task-specific applications is of fundamental importance for the sustainable development of economy and society. The burgeoning progress of nanomaterials in recent years has demonstrated that porosity is one of the essential factors in determining material properties for possible breakthroughs in their applications. Therefore, porous materials are playing important roles in many well-established applications and emerging technologies for challenging social and economic issues due to their intrinsic characteristics of large surface areas, open channels, and the possible control over the pore environment. According to International Union of Pure and Applied Chemistry, the pores of porous materials are classified into three categories by their pore sizes: micropores are smaller than 2 nm, mesopores are in the range of 2-50 nm, and macropores are larger than 50 nm. [1] Their pore walls include the organic skeleton (e.g., porous polymers, organic porous cages, and supramolecular organic frameworks), the inorganic skeleton (e.g., zeolites, porous carbons, and mesoporous silica), and the hybrid skeleton (e.g., metal-organic frameworks (MOFs)).Among the developed porous materials, porous polymers have attracted an increasing level of research interest owing to their potential to integrate the advantages of both porous materials and polymers. [2,3] Table 1 lists the characteristic structural features and properties of porous polymers, and gives a systematic comparison to other typical porous materials, such as zeolites, porous carbons, and MOFs. Porous polymers, zeolites, porous carbons, and MOFs share a number of features such as high permanent porosities, large surface areas, and designable pores and voids. However, they are different in several important aspects. The major advantages of porous polymers over many other porous materials are their chemical diversity and easy processability. Compared to zeolites and porous carbons, the synthesis of porous polymers is generally more versatile and can be approached in a way that conforms to the concept of rational materials design. Similar to MOFs, porous polymers inherit the excellent chemical and physical tunability afforded by the versatility of organic chemistry. Furthermore, Exploring advanced porous materials is of critical importance in the development of science and technology. Porous polymers, being famous for their all-organic components, tailored pore structures, and adjustable chemical components, have attracted an increasing level of research interest in a large number of applications, including gas adsorption/storage, separation, catalysis, environmental remediation, energy, optoelectronics, and health. Recent years have witnessed tremendous research breakthroughs in these fields thanks to the unique pore structures and versatile skeletons of porous polymers. Here, recent milestones in the diverse applications of porous polymers are presented, ...

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Section: Water Treatmentmentioning

confidence: 99%

Porous Polymers as Multifunctional Material Platforms toward Task‐Specific Applications

et al. 2018

Advanced Materials

356

245

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“…Mangan ve arseniğin adsorpsiyonu için Gibbs serbest enerji değişimi (∆G°), entalpi değişimi (∆H°) ve entropi değişimi (∆S°) belirlenmiştir [28]. Kimyasal bir olayın olup olmayacağını belirlemede ∆G°'in değeri önemlidir ve aşağıdaki denklem ile hesaplanabilir:…”

Section: Adsorpsiyon Termodinamiğiunclassified

Doğal ve modifiye edilmiş sepiyolit ile sulu çözeltilerden arsenik ve manganın adsorpsiyon ile ayrımı

Ateş¹,

Yaşar²

2019

Academic Platform Journal of Engineering and Science

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Doğal sepiyolit kil minerali Türkiye'nin Maden Tetkik ve Arama (MTA) kurumundan sağlanmış ve 2.5 M NaOH ile modifiye edilmiştir. Doğal (SP) ve modifiye edilmiş sepiyolit (Na-SP) örnekleri XRD, N2 adsorpsiyonu-desorpsiyonu, FTIR, SEM-EDS ve NH3-TPD ile karakterize edilmiştir. NaOH ile sepiyolitin modifikasyonu, sepiyolitin önemli miktarda desilikasyonuna ve dekatyonizasyonuna neden olmuştur. Sepiyolitin alkali muamelesi ile silisyum ve magnezyum çözünmesi sonucu sepiyolitin ortalama gözenek çapında artış ve yüzey alanında 187. 8 m 2 g-1 'den 7.1 m 2 g-1 'a azalma belirlenmiştir. Ayrıca, zayıf ve orta asit merkezleri azalırken, güçlü asit merkezleri artmıştır. SP ile maksimum As(III) ve As(V) ayrımı pH=1.5'de sağlanmış olup, değerler yaklaşık olarak sıra ile 8.9 mg g-1 ve 26.8 mg g-1 'dır. Na-SP örneklerinde maksimum As(III) ve As(V) ayrımı pH=5.0'de sağlanmış olup, onların miktarı ise sıra ile 46.7 mg g-1 ve 35.9 mg g-1 'dır. Doğal sepiyolitin maksimum Mn(II) uzaklaştırma miktarı ise 5.2 mg g-1 'dır. Sepiyolitin NaOH ile modifikasyonu ile arsenik adsorpsiyon kapasitesi dört kata kadar artmış olup, bu değer demir içeren sepiyolit örnekleri ve bimetalik oksitler ile karşılaştırılabilirdir. Langmuir izotermleri SP ile As(V) ve Na-SP ile As(III) ayrımı sonuçlarına uyumlu olmasına karşılık Freundlich izoterm modeli SP ile Mn(II) ve Na-SP ile As(V) uzaklaştırmasında uygunluk göstermiştir. Doğal ve modifiye edilmiş sepiyolit ile arsenik ve mangan adsorpsiyonu için kaydırılmış ikinci mertebeden kinetik model iyi uyum sağlamaktadır.

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“…By developing different industries such as microelectronics, metallurgical, battery manu-Health Organization (WHO), the maximum permissible limit of lead in drinking water is 0.1 mg/L [3] . There are various methods such as reverse osmosis, chemical precipitation, adsorption, coprecipitation, membrane processes, ion exchange, photocatalysis, chemical oxidation/reduction, electrodialysis and ultra-filtration for wastewater treatment before discharging into the environment [4][5][6] . Considering the higher performance and ease of use, adsorption method is introduced as one of the widely used methods.…”

Section: Introductionmentioning

confidence: 99%

Using fuzzy inference system to predict Pb (II) removal from aqueous solutions by magnetic Fe3O4/H2SO4-activated Myrtus Communis leaves carbon nanocomposite

Javadian

Asadollahpour

Ruiz

et al. 2018

Journal of the Taiwan Institute of Chemical Engineers

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In this research study, a magnetic nanocomposite consisting of the Fe 3 O 4 nanoparticles immobilized on Myrtus Communis-derived activated carbon (MM-AC) was synthesized and then, characterized by FE-SEM and FT-IR analytical methods. The results showed that the sizes of the Fe 3 O 4 nanoparticles were about 54 nm, and the changes in the intensities of the major peaks were associated with the binding process. The adsorption efficiency of the MM-AC was evaluated for Pb (II) removal from aqueous solutions. The effective parameters such as pH, adsorbent dosage, contact time and initial metal ion concentration were optimized to reach maximum Pb (II) removal efficiency (%). The equilibrium amount of Pb (II) adsorbed onto the MM-AC suggested that the removal of Pb (II) followed Langmuir model. The kinetic studies on the removal of Pb (II) revealed that the adsorption process obeyed pseudo-second-order kinetic model. The maximum Pb (II) removal efficiency by the MM-AC was obtained at pH = 5. The adsorption capacity of Pb (II) onto the MM-AC changed from 88.65 to 480.90 mg/g by increasing the initial concentration of Pb (II) in the range of 10 0-40 0 mg/L. The comparison of maximum monolayer adsorption capacity of the MM-AC with other adsorbents reported in the literatures for removal of Pb (II) indicated that the MM-AC had better removal efficiency. In order to predict Pb (II) removal efficiency, a methodology based on fuzzy inference system (FIS) including multiple inputs and one output was developed. Four input variables namely pH, contact time (min), adsorbent dosage (g), and initial concentration of Pb (II) were fuzzified using an artificial intelligence-based approach. A Mamdani-type of fuzzy inference system was applied to implement a total of 18 rules in IF-THEN format along with a fuzzy subset consisting of a combination of Triangular and Trapezoidal membership functions in eight levels. The max-min method was employed as fuzzy inference operator, while defuzzification process was conducted using the center of gravity (COG, centroid) method. The achieved coefficient of determination value (R 2 > 0.99) confirmed the excellent accuracy of fuzzy logic model as a trustworthy prediction tool for Pb (II) removal efficiency. The overall results suggested that the developed material can be employed as an efficient adsorbent for Pb (II) removal from polluted aqueous solutions on a full-scale operation.

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Microwave-assisted functionalization of Rosa Canina-L fruits activated carbon with tetraethylenepentamine and its adsorption behavior toward Ni(II) in aqueous solution: Kinetic, equilibrium and thermodynamic studies

Cited by 54 publications

References 55 publications

Porous Polymers as Multifunctional Material Platforms toward Task‐Specific Applications

Porous Polymers as Multifunctional Material Platforms toward Task‐Specific Applications

Doğal ve modifiye edilmiş sepiyolit ile sulu çözeltilerden arsenik ve manganın adsorpsiyon ile ayrımı

Using fuzzy inference system to predict Pb (II) removal from aqueous solutions by magnetic Fe3O4/H2SO4-activated Myrtus Communis leaves carbon nanocomposite

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