Review on the treatment of organic pollutants in water by ultrasonic technology

Wang, Jing; Wang, Zhenjun; Vieira, Carolina L.Z.; Wolfson, Jack M.; Pingtian, Guiyou; Huang, Su

doi:10.1016/j.ultsonch.2019.01.017

Cited by 149 publications

(50 citation statements)

References 54 publications

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“…Aquatic life problems, Cacogenic. [22] Industrial Pollutants Municipal pollutant Water Caused water and air pollution. [23] Radioactive Pollutants Different Isotopes Bones, teeth, skin and can cause [24] Nutrients Pollutants Plant debris, fertilizer.…”

Section: Water Pollutants Source Of Pollutants Effect Of Pollutants Rmentioning

confidence: 99%

Role of Nanomaterials in the Treatment of Wastewater: A Review

Yaqoob

Parveen

Umar

et al. 2020

Water

480

160

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Water is an essential part of life and its availability is important for all living creatures. On the other side, the world is suffering from a major problem of drinking water. There are several gases, microorganisms and other toxins (chemicals and heavy metals) added into water during rain, flowing water, etc. which is responsible for water pollution. This review article describes various applications of nanomaterial in removing different types of impurities from polluted water. There are various kinds of nanomaterials, which carried huge potential to treat polluted water (containing metal toxin substance, different organic and inorganic impurities) very effectively due to their unique properties like greater surface area, able to work at low concentration, etc. The nanostructured catalytic membranes, nanosorbents and nanophotocatalyst based approaches to remove pollutants from wastewater are eco-friendly and efficient, but they require more energy, more investment in order to purify the wastewater. There are many challenges and issues of wastewater treatment. Some precautions are also required to keep away from ecological and health issues. New modern equipment for wastewater treatment should be flexible, low cost and efficient for the commercialization purpose.

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Section: Water Pollutants Source Of Pollutants Effect Of Pollutants Rmentioning

confidence: 99%

Role of Nanomaterials in the Treatment of Wastewater: A Review

Yaqoob

Parveen

Umar

et al. 2020

Water

480

160

View full text Add to dashboard Cite

show abstract

“…Scalable and cost‐effective approaches to remove organic pollutants in the aqueous environment have been pursued in recent decades. [ 3–6 ] Generally, the main routes for removing organic pollutants are classified into physical separation and chemical degradation. Compared with physically separating the pollutants from the water body, which necessitates a secondary treatment, the chemical approaches can permanently convert the organic pollutants into nontoxic small molecules, such as water, carbon dioxide, and minerals.…”

Section: Introductionmentioning

confidence: 99%

Piezocatalytic Foam for Highly Efficient Degradation of Aqueous Organics

et al. 2020

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Piezoelectric catalysis (piezocatalysis) is a physical/chemical process that utilizes piezoelectric potential for accelerating chemical reactions, in which ubiquitous mechanical energies in nature are used for various catalysis applications, e.g., treating organic water pollutants. Despite the high efficiency achieved by piezocatalytic powders, the particles used tend to diffuse in water systems and are hard to be separated, thus causing secondary pollution. Herein, a free‐standing piezocatalytic foam is designed and fabricated, which is composed of BaTiO3 nanoparticles embedded in the PVDF scaffold. The as‐prepared PVDF–BaTiO3 composite foam demonstrates outstanding piezocatalytic efficiency in removing aqueous organics among state‐of‐the‐art integral piezocatalytic platforms, which lie in the synergy of piezoelectric materials and abundant interconnected pores within the foam. Significantly, PVDF–BaTiO3 foam is further applied for purifying natural water samples, by which the permanganate index of the water sample reduces by nearly 30% after 2 h of treatment. In addition, as a monolithic platform, PVDF–BaTiO3 foam is easy to be collected, with high reuse stability and applicability for treating various pollutants, resulting in dominant advantages over powder‐based systems for practical high‐flux wastewater treatment. Herein, a piezocatalytic platform is provided for the effective degradation of organic pollutants in water, with minimal environmental side effects.

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“…The materials containing different amounts of NQE (in the modified PL6C matrix) showed variations in terms of current efficiency and selectivity for H 2 O 2 electrogeneration (see Table 1). The percentage of H 2 O 2 in the system and the electron number (n e À ) involved in the reaction were calculated using eqn (8) and (9) proposed by Paulus et al (2014). 18,51…”

Section: Resultsmentioning

confidence: 99%

“…Although several studies have proposed different methods for the removal of contaminants in wastewater, the treatments are commonly incapable of efficiently removing recalcitrant compounds in low concentration. [9][10][11] Among the alternative methods proposed, advanced oxidation processes (AOPs) can complement the traditional treatments and ensure effective/safe removal of pollutants. AOPs are based on the generation of highly reactive oxygen species, such as hydroxyl radicals ( OH), 1,12,13 and are known to promote non-selective oxidation of a wide range of organic molecules.…”

Section: Introductionmentioning

confidence: 99%