Advances in water treatment technologies for removal of polycyclic aromatic hydrocarbons: Existing concepts, emerging trends, and future prospects

Adeola, Adedapo O.; Forbes, Patricia B.C.

doi:10.1002/wer.1420

Cited by 82 publications

(45 citation statements)

References 182 publications

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“…As outlined beforehand, toxic organic pollutants are widespread in the environment, thus, it is highly recommended to eliminate or reduce the concentration of such pollutants in the aquatic environment to safe levels [53,[80][81][82][83]. Numerous conventional treatment processes have been applied and tested for wastewater treatment, such as adsorption, coagulation, precipitation, biodegradation, ozonation, electrochemical oxidation, and advanced oxidation processes [43,47,[83][84][85][86][87][88].…”

Section: Methods Of Treatmentmentioning

confidence: 99%

TiO2 Photocatalysis for the Transformation of Aromatic Water Pollutants into Fuels

et al. 2021

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The growing world energy consumption, with reliance on conventional energy sources and the associated environmental pollution, are considered the most serious threats faced by mankind. Heterogeneous photocatalysis has become one of the most frequently investigated technologies, due to its dual functionality, i.e., environmental remediation and converting solar energy into chemical energy, especially molecular hydrogen. H2 burns cleanly and has the highest gravimetric gross calorific value among all fuels. However, the use of a suitable electron donor, in what so-called “photocatalytic reforming”, is required to achieve acceptable efficiency. This oxidation half-reaction can be exploited to oxidize the dissolved organic pollutants, thus, simultaneously improving the water quality. Such pollutants would replace other potentially costly electron donors, achieving the dual-functionality purpose. Since the aromatic compounds are widely spread in the environment, they are considered attractive targets to apply this technology. In this review, different aspects are highlighted, including the employing of different polymorphs of pristine titanium dioxide as photocatalysts in the photocatalytic processes, also improving the photocatalytic activity of TiO2 by loading different types of metal co-catalysts, especially platinum nanoparticles, and comparing the effect of various loading methods of such metal co-catalysts. Finally, the photocatalytic reforming of aromatic compounds employing TiO2-based semiconductors is presented.

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Section: Methods Of Treatmentmentioning

confidence: 99%

TiO2 Photocatalysis for the Transformation of Aromatic Water Pollutants into Fuels

et al. 2021

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“…However, the emergence of N-doped carbonsupported metal catalysts in the last decade has attracted significant attention in catalysis, and the fact that nitrogen doping can be tailored to induce other characteristics to the bulk material, other than catalysis, encourages an integrated and sustainable approach to material development [1][2][3]. Integrated approaches include catalysis-adsorption, oxidation-catalysis, photocatalysis-degradation, photodegradation-adsorption, etc., achieved with the same functionalized material/composite [117,[120][121][122]. N-doped carbon-supported metal supports have shown higher catalytic efficiency in several heterogeneous catalytic reactions, than the conventional, pristine carbon supports [3].…”

Section: Sustainability Of Metallic Compositesmentioning

confidence: 99%

Sustainable development and enhancement of cracking processes using metallic composites

et al. 2021

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Metallic composites represent a vital class of materials that has gained increased attention in crude oil processing as well as the production of biofuel from other sources in recent times. Several catalytic materials have been reported in the literature for catalytic cracking, particularly, of crude oil. This review seeks to provide a comprehensive overview of existing and emerging methods/technologies such as metal–organic frameworks (MOFs), metal–matrix composites (MMCs), and catalytic support materials, to bridge information gaps toward sustainable advancement in catalysis for petrochemical processes. There is an increase in industrial and environmental concern emanating from the sulphur levels of oils, hence the need to develop more efficient catalysts in the hydrotreatment (HDS and HDN) processes, and combating the challenge of catalyst poisoning and deactivation; in a bid to improving the overall quality of oils and sustainable use of catalyst. Structural improvement, high thermal stability, enhanced cracking potential, and environmental sustainability represent the various benefits accrued to the use of metallic composites as opposed to conventional catalysts employed in catalytic cracking processes.

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“… Adeola and Forbes (2020) have discussed technologies like solvent extraction, phytoremediation, chemical oxidation, photocatalytic degradation, electrokinetic, thermal treatment, microbial degradation and integrated remediation technologies. These methods come along with limitations such as high costs, production of toxic by-products and the genesis of a newer pollutant that may affect the environment.…”

Section: Introductionmentioning

confidence: 99%

Naphthalene degradation studies using Pseudomonas sp. strain SA3 from Alang-Sosiya ship breaking yard, Gujarat

Tirkey

Ram

Mishra

2021

Heliyon

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Polycyclic aromatic hydrocarbons (PAHs) remediation has received considerable attention due to their significant health concern and environmental pollution. However, PAHs contaminated sites also contain indigenous microbes that can potentially degrade naphthalene. Therefore, this study aimed to isolate, characterise and optimise process parameters for efficient naphthalene degradation. A total of 50 naphthalene degrading bacteria were isolated from Alang-Sosiya ship breaking yard, Bhavnagar, Gujarat and screened for their naphthalene degrading capacity. The selected isolate, Pseudomonas sp. strain SA3 was found to degrade 98.74 ± 0.00% naphthalene at a concentration of 500 ppm after 96 h. Further, optimisation of environmental parameters using one factor at a time approach using different inoculum sizes (v/v), pH, salinity, temperature, carbon and nitrogen source greatly accelerated the degradation process attaining 98.6 ± 0.46% naphthalene degradation after 72 h. The optimised parameters for maximum naphthalene degradation were pH 8, 0.1% peptone as nitrogen source, 8% salinity and 1% (v/v) inoculum size.

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Advances in water treatment technologies for removal of polycyclic aromatic hydrocarbons: Existing concepts, emerging trends, and future prospects

Cited by 82 publications

References 182 publications

TiO2 Photocatalysis for the Transformation of Aromatic Water Pollutants into Fuels

TiO2 Photocatalysis for the Transformation of Aromatic Water Pollutants into Fuels

Sustainable development and enhancement of cracking processes using metallic composites

Naphthalene degradation studies using Pseudomonas sp. strain SA3 from Alang-Sosiya ship breaking yard, Gujarat

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