Effect of Hybrid Photocatalysis and Ceramic Membrane Filtration Process for Humic Acid Degradation

Song, Lili; Zhu, Bo; Jegatheesan, Veeriah; Gray, Stephen; Duke, Mikel; Muthukumaran, Shobha

doi:10.1007/978-3-319-75199-3_6

Cited by 2 publications

(2 citation statements)

References 47 publications

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“…Additionally, early work from Palmer et al [99] on the operational conditions of photocatalytic NOM degradation using TiO 2 showed that the rate of initial degradation increased with increasing concentration until the concentration of 30 ppm of carbon, after which, the rate decreased. This trend is seen in several other studies of NOM degradation above 30 ppm of C [100][101][102].…”

Section: Catalyst and Nom Concentrationsupporting

confidence: 76%

Photocatalytic Oxidation of Natural Organic Matter in Water

Gowland

Robertson

Chatzisymeon

2021

Water

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Increased concentrations of natural organic matter (NOM), a complex mixture of organic substances found in most surface waters, have recently emerged as a substantial environmental issue. NOM has a significant variety of molecular and chemical properties, which in combination with its varying concentrations both geographically and seasonally, introduce the opportunity for an array of interactions with the environment. Due to an observable increase in amounts of NOM in water treatment supply sources, an improved effort to remove naturally-occurring organics from drinking water supplies, as well as from municipal wastewater effluents, is required to continue the development of highly efficient and versatile water treatment technologies. Photocatalysis has received increasing interest from around the world, especially during the last decade, as several investigated processes have been regularly reported to be amongst the best performing water treatment technologies to remove NOM from drinking water supplies and mitigate the formation of disinfection by products. Consequently, this overview highlights recent research and developments on the application of photocatalysis to degrade NOM by means of TiO2-based heterogeneous and homogeneous photocatalysts. Analytical techniques to quantify NOM in water and hybrid photocatalytic processes are also reviewed and discussed.

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Section: Catalyst and Nom Concentrationsupporting

confidence: 76%

Photocatalytic Oxidation of Natural Organic Matter in Water

Gowland

Robertson

Chatzisymeon

2021

Water

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“…Most of them are non‐biodegradable, toxic and potentially carcinogenic . Today, various processes are used for the removal of these organic pollutants such as, physical separation, adsorption, membrane filtration . Nevertheless, several disadvantages have been observed during these treatment processes (clogging, transfer of contaminants from one phase to another, energy consumption, efficiency).…”

Section: Introductionmentioning

confidence: 99%

Polyaniline coated hematite sand supported on graphene oxide (HS@PANI‐GO) as a new magnetic material for advanced catalytic oxidation based on sulfate radicals: optimization using response surface methodology

Fakir

Anfar

Benafqir

et al. 2019

J of Chemical Tech & Biotech

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BACKGROUND: We report here on the synthesis of a new magnetic and natural material: polyaniline coated hematite sand supported on graphene oxide (HS@PANI-GO) which was used as an heterogeneous catalyst to activate persulfate (PS) for aqueous solution Orange G (OG) degradation. RESULTS:The characterization results have revealed that the hematite sand is rich in iron oxide, and the inorganic particles were well coated with polyaniline and successfully dispersed in graphene oxide. Further, catalytic oxidation experiments demonstrated that HS@PANI-GO material exhibited high activity in the PS activation for the OG degradation. It was found that complete OG removal from aqueous solution was achieved in 90 min at natural pH. In addition, the influence of various reaction conditions such as temperature, concentration of PS, catalyst dose, pH and decomposition time over the HS@PAN-GO/PS system were investigated and optimized. The catalyst HS@PAN-GO could be recycled easily by a magnet with good reusability. Finally, the effects of various parameters such as PS concentration, catalyst dose, initial OG concentration, and contact time, were investigated using the response surface methodology (RSM). It transpires that the experimental elimination of OG is 98.14%, as obtained under optimal conditions, was very close to the predicted value (96.58%) determined by RSM. CONCLUSION: This study provides a promising way for the activation of green oxidant 'PS', by using a new magnetic composite suited for environmental remediation and oxidation catalysis. RESULTS AND DISCUSSIONS CharacterizationThe crystalline structures of the various materials as determined by XRD are shown in Fig. 1. (JCPDS NO 33-0664). According to the XRD profile, the majority of the peaks observed at 2 = 24.19 ∘ , Figure 2. Scanning electron microscopy (SEM) images of (a, b) HS and (c, d) of HS@PANI.

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Effect of Hybrid Photocatalysis and Ceramic Membrane Filtration Process for Humic Acid Degradation

Cited by 2 publications

References 47 publications

Photocatalytic Oxidation of Natural Organic Matter in Water

Photocatalytic Oxidation of Natural Organic Matter in Water

Polyaniline coated hematite sand supported on graphene oxide (HS@PANI‐GO) as a new magnetic material for advanced catalytic oxidation based on sulfate radicals: optimization using response surface methodology

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