Optimization and characterization of Direct Blue 71 removal using nanocomposite of Chitosan-MWCNTs: Central composite design modeling

Abbasi, Mahmoud; Habibi, Mohammad Mahdi

doi:10.1016/j.jtice.2016.01.019

Cited by 53 publications

(20 citation statements)

References 33 publications

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“…Design of experiments is useful because an optimal design reduces the cost of experimentation by allowing statistical models to be estimated with fewer experimental runs. It can accommodate several types of factors, such as process, mixture and discrete factors [17,18].…”

Section: Methods Used For Making Fibre Compositesmentioning

confidence: 99%

Investigation on Mechanical Properties of Hybrid Fibre Reinforced Polymer Composites

Koley¹,

Aggarwal²

2017

IJERA

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The main intention of this review is to learn the potential of agro-residues as reinforcements for composite materials as a substitute to natural and synthetic fibre. In recent times, there has been a rapid advancement in study and progress in the field of natural fibre composite. Attention is vindicated due to the remuneration of these materials compared to synthetic fibre composite, including unassuming environmental strength, inexpensive and hold up their prospective across a wide range of use. A lot of attempt has been made in ordered to examine the mechanical properties of composites made from these natural fibre materials. This study aims to offer a summing up the factors that influence the mechanical properties of natural fibre composites and their hybrid reinforced polymer composites.

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Section: Methods Used For Making Fibre Compositesmentioning

confidence: 99%

Investigation on Mechanical Properties of Hybrid Fibre Reinforced Polymer Composites

Koley¹,

Aggarwal²

2017

IJERA

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“…Klasik metot ile yürütülen optimizasyon çalışmalarında, prosese etki eden parametrelerden sadece biri değiştirilip diğer tüm parametreler belirli bir seviyede sabit tutulmaktadır. Proses parametrelerinin optimizasyonu için klasik metot çok sayıda deney yapılmasını gerektirmekte ve bu da çok zaman alıcı ve pahalı olmaktadır [27]. Bu metodun bir diğer dezavantajı ise parametreler arasında etkileşim etkilerinin belirlenememesidir [28].…”

Section: Igi̇ri̇şunclassified

“…Fosfat giderimi (%) = +97.09 + 22.80A + 10.99B -5.67C + 7.23D + 0.45AB -3.74AC -0.48AD -0.57BC + 1.01BD -0.076CD -20.39A 2 -10.75B 2 -6.53C 2 -10.94D 2 (6) Burada A, B, C ve D bağımsız değişkenlerin (pH, AC-nZVI, başlangıç fosfat konsantrasyonu ve temas süresi) kodlanmış değerleridir. Model eşitliğindeki (Eşitlik 6) terimlerin önündeki pozitif işaret sinerjik etkiyi gösterirken, negatif işaret antagonistik etkiyi göstermektedir [27,28]. Eşitlik 6'da görüldüğü üzere, fosfat giderimi üzerinde pH (A), AC-nZVI miktarı (B) ve temas süresi pozitif etkiye, başlangıç fosfat konsantrasyonu (C) ise negatif etkiye sahip olmuştur.…”

Section: Bulgular Ve Tartişmaunclassified

Aktif Karbon Destekli Nano Boyutlu Sıfır Değerlikli Demir ile Sulu Ortamlardan Fosfat Giderimi: Cevap Yüzey Yöntemi ile İşletme Parametrelerinin Optimizasyonu

Tunç

2019

Bilecik Şeyh Edebali Üniversitesi Fen Bilimleri Dergisi

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z-Bu çalışmada, sulu faz borhidrür indirgeme metodu ile aktif karbon destekli nano boyutlu sıfır değerikli demir (AC-nZVI) partikülleri sentezlenmiş ve sentezlenen AC-nZVI partikülleri sulu ortamlardan fosfat gideriminde kullanılmıştır. Fosfat giderim verimi üzerinde çözelti pH'ı, AC-nZVI miktarı, başlangıç fosfat konsantrasyonu ve temas süresi işletme parametrelerinin etkilerini ve optimum şartları belirlemek için cevap yüzey metodu (CYM) uygulanmıştır. Deneysel dizaynda ve sonuçların analizinde merkezi kompozit dizaynı (MKD) kullanılmıştır. Varyans analizi (ANOVA) sonuçlarına göre, ikinci dereceden polinominal model istatistiksel olarak anlamlı (P=0.0002) ve determinasyon katsayısı (R 2 ) 0.8735 olarak bulunmuştur. AC-nZVI ile maksimum fosfat giderimi için optimum şartlar pH 3.09, AC-nZVI miktarı 0.59 g/L, fosfat konsantrasyonu 30.69 mg P/L ve temas süresi 66.58 dakika olarak belirlenmiştir. Bu çalışmanın sonuçları, atıksulardan fosfat gideriminde AC-nZVI'nın etkili bir adsorbent olarak kullanılabileceğini göstermiştir. Anahtar Kelimeler-Adsorpsiyon, Fosfat, AC-Nzvı, Optimizasyon, Cevap Yüzey Yöntemi.bstract-In this study, activated carbon-supported nano-scale zero-valent iron particles were synthesized by the aqueous phase borohydride reduction method and the synthesized AC-nZVI particles were used for the phosphate removal from aqueous solutions. The effects of the operating parameters that included pH, AC-nZVI amount, initial phosphate concentration and contact time on the phosphate removal were investigated using response surface methodology. The central composite design was employed for the experimental design and analysis of the results. According to results of variance analysis (ANOVA), the second order polynomial model was statistically significant (P=0.0002) and determination coefficient (R 2 ) was 0.8735. The optimum conditions for phosphate removal by AC-nZVI were determined as pH of 3.09, AC-nZVI amount of 0.59 g/L, initial phosphate concentration of 30.69 mg P/L and contact time of 66.58 minutes. The results of this study demonstrated that AC-nZVI could be used as an effective adsorbent for phosphate removal from wastewater.

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“…Moreover, among the various adsorbents like zeolite, organoclays, biochar, metal-organic frameworks, and carbon nanotubes for the exclusion of nitrophenolic compounds from aqueous solutions [25][26][27][28][29][30][31][32][33], CNTs have been acknowledged as the productive adsorbents for elimination of them. is CNT application can be associated to electrostatic interactions and high surface areas, and the equilibrium time is shorter compared to the other materials.…”

Section: Introductionmentioning

confidence: 99%

“…erefore, CNTs/chitosan composites, which are developed by imbedding functional groups of the chitosan to CNTs, have been developed to adsorb the pollutions or toxic metals from the wastewaters [31][32][33]39].…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Characterization, and Evaluation of Evaporated Casting MWCNT/Chitosan Composite Membranes for Water Desalination

Alsuhybani

Alshahrani

Haidyrah

2020

Journal of Chemistry

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Fresh water scarcity and pollution turn out to be a most serious issue throughout the world due to the rapid population growth. The application of nanomaterials (NMs) for the removal of pollutants from water has attracted significant attention. The nanofiltration membrane was fabricated through the evaporative casting (EC) method using multiwalled carbon nanotubes (MWCNT) and chitosan (CHIT) as the surfactant to enable water purification. The developed EC membrane properties were characterized in mechanical, surface charging (zeta potential), surface morphology, and hydrophobicity properties. Results demonstrated that incorporation of MWCNT and the biopolymers (chitosan) resulted in suitable developments in mechanical properties of the membrane. For example, the membrane has shown values for tensile strength (28 ± 1 MPa), elongation (10.2 ± 1.2%), Young’s modulus (1.2 ± 0.1 GPa), and toughness of (1.9 ± 0.2 J/g). When more significant changes were investigated on the surface morphology of the EC membrane, it was observed that the pores on the surface morphology of the EC membrane decreased as the evaporative casting method was used. Moreover, the permeability of the membrane towards water, inorganic salts, and pH effect on salt rejections was studied using the NF/RO system. These established nanocomposite membranes signify the promising candidates for fresh water desalination and elimination of organic impurities.

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Optimization and characterization of Direct Blue 71 removal using nanocomposite of Chitosan-MWCNTs: Central composite design modeling

Cited by 53 publications

References 33 publications

Investigation on Mechanical Properties of Hybrid Fibre Reinforced Polymer Composites

Investigation on Mechanical Properties of Hybrid Fibre Reinforced Polymer Composites

Aktif Karbon Destekli Nano Boyutlu Sıfır Değerlikli Demir ile Sulu Ortamlardan Fosfat Giderimi: Cevap Yüzey Yöntemi ile İşletme Parametrelerinin Optimizasyonu

Synthesis, Characterization, and Evaluation of Evaporated Casting MWCNT/Chitosan Composite Membranes for Water Desalination

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