Photocatalytic degradation of 2,4-dichlorophenol over Fe-ZnO catalyst under visible light

Kiattisaksiri, Pradabduang; Khamdahsag, Pummarin; Khemthong, Pongtanawat; Pimpha, Nuttaporn; Grisdanurak, Nurak

doi:10.1007/s11814-014-0379-6

Cited by 6 publications

(4 citation statements)

References 33 publications

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“…The influential parameters affecting lignin removal included the initial lignin concentration, the quantity of Fe-BTC, agitation, and the acidity-alkalinity (pH), which were investigated using a single batch mixing system. The experimental and optimum operational conditions were determined using Box-Behnken design (BBD) (Archariyapanyakul et al 2017;Kiattisaksiri et al 2015;Sriprom et al 2015;Tolod et al 2016;Zhan et al 2010).…”

Section: Introductionmentioning

confidence: 99%

Applicability of Iron (III) Trimesic (Fe-BTC) to Enhance Lignin Separation from Pulp and Paper Wastewater

Pangkumhang¹,

Jutaporn²,

Sorachoti³

et al. 2019

JSM

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This study assesses the application of iron (III) trimesic (Fe-BTC) as a coagulant-flocculant to remove lignin from pulp and paper (P&P) wastewater. In this research, Fe-BTC was characterized by X-ray diffraction (XRD), while the functional groups of Fe-BTC and lignin were analyzed by Fourier transform infrared (FT-IR) spectroscopy. Scanning electron microscopy (SEM) determined the surface morphology of the material. The influential parameters affecting lignin removal included the initial lignin concentration, the quantity of Fe-BTC, and the pH which were investigated using a single batch mixing system. The experimental and optimum operational conditions were determined using Box-Behnken design (BBD). Fe-BTC dosage plays a major role in efficiently removing lignin, while the pH and initial lignin concentration had no significant effect. Greater than 80% removal efficiency could be achieved with a Fe-BTC dosage as low as 2 g/L. The proposed mechanism of lignin aggregation was that Fe molecules were released from unsaturated sites of Fe-BTC and then formed new bonds with O in the methoxy lignin group. The interaction between Fe-BTC and lignin was π-π stacking (benzene ring), which explains the formation of F-O bonds in the lignin sludge. ABSTRAK Kajian ini menilai penggunaan besi (III) trimesik (Fe-BTC) sebagai bahan penggumpal untuk menyingkirkan lignin daripada air sisa pulpa dan kertas (P&P). Dalam kajian ini, Fe-BTC dicirikan oleh pembelauan sinar-x (XRD) manakala kumpulan fungsian Fe-BTC dan lignin dianalisis melalui spektroskopi transformasi Fourier inframerah (FT-IR). MikroskopElektron Imbasan (SEM) menentukan morfologi permukaan untuk bahan. Parameter penting yang menyebabkan penyingkiran lignin adalah termasuk kepekatan pemula lignin, kuantiti Fe-BTC dan pH yang dikaji menggunakan sistem campuran kelompok tunggal. Syarat uji kaji dan pengoperasian optimum telah ditentukan dengan menggunakan reka bentuk Box-Behnken (BBD). Dos Fe-BTC memainkan peranan penting dalam menyingkirkan lignin dengan cekap, manakala pH dan kepekatan pemula lignin tidak menunjukkan kesan yang ketara. Lebih daripada 80% kecekapan penyingkiran boleh dicapai dengan dos Fe-BTC serendah 2 g/L. Mekanisme cadangan daripada pengagregatan lignin adalah bahawa Fe molekul dibebaskan dari unsatured tapak Fe-BTC dan kemudian membentuk ikatan baharu dengan O dalam kumpulan lignin metoksi. Interaksi antara Fe-BTC dan lignin ialah susunan π-π (gelang benzena) yang menjelaskan pembentukan ikatan F-O dalam enap-cemar lignin.Kata kunci: Fe-BTC; lignin; MOFs; pulpa dan kertas; rangka kerja logam-organik; reka bentuk Box-Behnken

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Section: Introductionmentioning

confidence: 99%

Applicability of Iron (III) Trimesic (Fe-BTC) to Enhance Lignin Separation from Pulp and Paper Wastewater

Pangkumhang¹,

Jutaporn²,

Sorachoti³

et al. 2019

JSM

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“…Response surface methodology (RSM) is a mathematical statistical method used to calculate the desired response to achieve the optimal condition. To design experiments and investigate the influence of factors, Box-Behnken design (BBD) was selected (Archariyapanyakul et al, 2017;Bezerra et al, 2008;Kim, 2016;Daud et al, 2018;Khamdahsag el al., 2017;Kiattisaksiri et al, 2015). BBD has been used for optimization of acid-catalyzed transesterification biodiesel wastewater pre-treatment (Daud et al, 2018), clove oil development based nanoemulsion of olmesartan for transdermal delivery (Aqil et al, 2016), color and chemical oxygen demand (COD) removal optimization from livestock wastewater (Tak et al, 2015), and arsenic removal by aluminum sulfate (Bilici Baskan and Pala, 2010).…”

Section: Introductionmentioning

confidence: 99%

Optimization of Lignin Removal from Synthesized Wastewater by Iron (III) Trimesate

Pangkumhang¹,

Phanthasri²,

Suwannatrai³

et al. 2019

EnNRJ

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Box-Behnken design (BBD) was employed to study an optimal treatment method of synthetic lignin wastewater effluent from pulp and paper wastewater treatment plants using iron (III) trimesate (Fe-BTC) as an alternative coagulant aid. Fe-BTC was prepared by hydrothermal technique using ferric chloride hexahydrate (FeCl3·6H2O) combined with 1,3,5-benzenetricarboxylic acid (trimesic acid, H3BTC) in deionized water and ethanol. X-ray diffractometry and Fourier transform infrared spectroscopy were used to characterize the property of Fe-BTC. Three quadratic models of the four factors including Fe-BTC dosage, pH, initial lignin concentration, and slow mixing time were defined with lignin removal efficiency as a response. Treatment efficiency of lignin removal was 50-80% for experimental data and 60-80% for predicted values. Optimal condition was 1 g/L of Fe-BTC dosage, pH 4, and 50 ppm of initial lignin concentration without slow mixing giving 58.34% lignin removal efficiency. The pH of treated samples was below 3 after all processes. Results showed that Fe-BTC enhanced separation of lignin by coagulation-flocculation. Adsorption-charge neutralization is the main mechanism of this process at acidic pH. Fe-BTC separated the wastewater into three layers with Fe-BTC powder at the bottom, lignin sludge in the middle, and clear supernatant at the top. Lignin sludge can be reused and recycled for use in other applications.

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“…Wang et al, 2009). On the other hand, alternative modeling methodologies (e.g., empirical models or response surface methodologies) (Asl et al, 2012;Babaei et al, 2011;Kiattisaksiri et al, 2015;Lee & Hamid, 2015;Merabet et al, 2016) are constantly gaining ground in the area, mainly due to the complex nature of the photodegradation processes and the lack of thorough understanding of all the mechanisms involved, which inhibits the development of generalized powerful mechanistic models. Among these alternatives, Artificial Neural Network models display an evergrowing presence in the most recent relevant studies.…”

Section: Introductionmentioning

confidence: 99%

Modeling and optimization of a photocatalytic process: Degradation of endocrine disruptor compounds by Ag/ZnO

Jasso-Salcedo

Hoppe

Pla

et al. 2017

Chemical Engineering Research and Design

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Photocatalytic degradation of 2,4-dichlorophenol over Fe-ZnO catalyst under visible light

Cited by 6 publications

References 33 publications

Applicability of Iron (III) Trimesic (Fe-BTC) to Enhance Lignin Separation from Pulp and Paper Wastewater

Applicability of Iron (III) Trimesic (Fe-BTC) to Enhance Lignin Separation from Pulp and Paper Wastewater

Optimization of Lignin Removal from Synthesized Wastewater by Iron (III) Trimesate

Modeling and optimization of a photocatalytic process: Degradation of endocrine disruptor compounds by Ag/ZnO

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