The combination and optimization study on RB29 dye removal from water by peroxy acid and single-wall carbon nanotubes

Nadafi, K; Mesdaghinia, Alireza; Nabizadeh, Ramin; Masoud, Younesian; Rad, Mahsa Jahangiri

doi:10.5004/dwt.2011.1980

Cited by 21 publications

(4 citation statements)

References 21 publications

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“…SWCNTs are more efficient for removing benzene and toluene and have shown maximum adsorption capacities of 9.98 and 9.96 mg g -1 , respectively [74]. A maximum adsorption capacity of 496 mg g -1 was achieved when a reactive blue 29 (RB29) has been removed from aqueous solution by using SWCNTs [92].…”

Section: Carbon Nanotubes (Cnts)mentioning

confidence: 96%

The role of nanomaterials as effective adsorbents and their applications in wastewater treatment

et al. 2017

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Nanomaterials have been extensively studied for heavy metal ions and dye removals from wastewater. This article reviews the role of nanomaterials as effective adsorbents for wastewater purification. In recent years, numerous novel nanomaterial adsorbents have been developed for enhancing the efficiency and adsorption capacities of removing contaminants from wastewater. The innovation, forthcoming development, and challenges of cost-effective and environmentally acceptable nanomaterials for water purification are discussed and reviewed in this article. This review concludes that nanomaterials have many unique morphological and structural properties that qualify them to be used as effective adsorbents to solve several environmental problems. Graphical Abstract& Hamidreza Sadegh

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Section: Carbon Nanotubes (Cnts)mentioning

confidence: 96%

The role of nanomaterials as effective adsorbents and their applications in wastewater treatment

et al. 2017

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“…Indeed, SWCNTs are more efficient for the removal of benzene and toluene, and has shown maximum adsorption capacities of 9.98 and 9.96 mg g -1 , respectively [58]. A maximum adsorption capacity of 496 mg g -1 was achieved when reactive blue 29 (RB29) was removed from aqueous solution using SWCNTs [59,60].…”

Section: Adsorption Of Synthetic Dyes On Cnts and A Comparison With Amentioning

confidence: 98%

A comparative study on the basis of adsorption capacity between CNTs and activated carbon as adsorbents for removal of noxious synthetic dyes: a review

et al. 2015

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Rapid removal of noxious synthetic dyes from wastewater is of great concern in the scientific research field, this is due to the expansion of harmful effects of synthetic dyes traces in water streams on the environment and human health with the exponential rise in concentration of synthetic dye globally and demand in various industries that coincided with the implantation of more stringent water quality standards. Various technologies have been applied for the removal of synthetic dye from wastewater, including adsorption technology, which has a great potential in treating varieties of synthetic dyes. This article comprehensively reviews the latest progress in the development of carbon nanotubes (CNTs) and their applications for the removal of synthetic dyes from wastewater, including functionalized of CNTs and their researched counterparts. The emerging trends in the development of alternative adsorbents with different substrates, morphologies, and functional groups are also elucidated.

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“…Nadafi et al [230] formed PAA in situ by dosing acetic acid and hydrogen peroxide during a dye (reactive blue 29) oxidation. A similar in situ formation of PAA has been used in so-called peroxy-acid process, which has been studied for polyaromatic hydrocarbons (PAHs) oxidation from lake sediments, soil, or contaminated glass bead surfaces [231][232][233][234][235][236].…”

Section: Oxidation Of Aqueous Pollutantsmentioning

confidence: 99%

Peracids in water treatment: A critical review

Luukkonen

Pehkonen

2016

Critical Reviews in Environmental Science and Technology

255

122

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Peracids have gained interest in the water treatment over the last few decades. Peracetic acid (CH 3 CO 3 H) has already become an accepted alternative disinfectant in wastewater disinfection whereas performic acid (CHO 3 H) has been studied much less, although it is also already commercially available. Peracids have also been tested for drinking water disinfection, oxidation of aqueous (micro)pollutants, sludge treatment and ballast water treatment, to name just a few examples. The purpose of this review paper is to represent comprehensive up-to-date information about the water treatment applications, aqueous reaction mechanisms, and disinfection byproduct formation of peracids, namely performic, peracetic and perpropionic acids. and PFA have several of the qualities of an ideal disinfectant: toxicity to microorganisms, but not to higher forms of life; effectivity at ambient temperatures; stability and long shelf-life; low corrosivity; deodorizing ability; widespread availability and reasonable cost [12].PAA and PFA are colorless liquids with characteristic pungent odors. Both are thermodynamically unstable and can decompose spontaneously or explode when highly concentrated, heated, under mechanical stress or exposed to catalytic effects of impurities [1,13,14]. The recommended storage temperatures are below 30 and 20°C for PAA and PFA, respectively [6,14]. Longer carbon chain length increases stability, and thus PAA is more stable than PFA [1]. However, the O-O bond dissociation energy of PFA and PAA has been calculated to be similar: 48 kcal/mol [15]. Percarboxylic acids have typically pK a values 3-4 units higher than the parent carboxylic acids [1]. Nonetheless, PFA and PAA are corrosive [16]. ACCEPTED MANUSCRIPT ACCEPTED MANUSCRIPT 3Exposure to PAA and PFA causes irritation and possibly permanent damage to the skin (cutaneous emphysema), eyes and the respiratory system. In the skin contact, 0.2% is proposed as the no-observed-effect concentration (NOEC) for short and medium length exposure [17].When inhaled, airborne concentrations less than 0.16-0.17 ppm (0.50-0.52 mg/m 3 ) are considered to cause no irritation [17,18]. However, higher concentrations are harmful and a case study suggested that PAA could cause occupational asthma [19].The largest users of PAA on a global scale (estimated in 2013) are shown in Fig. 1. Similar numbers are not available for PFA, but it is probably used at significantly lower quantities.The largest user, the food industry, applies PAA as a disinfectant in fresh produce washing water, clean-in-place (CIP) processes, on food processing equipment, and in pasteurizers, to name just a few examples [21,22]. PFA is also a suitable disinfectant in low-temperature refrigerated food processing and storage rooms [23]. In healthcare, PAA is used for instance in Recently, methods to determine the residual PAA from wastewater were compared: the spectrophotometric method using DPD and catalase was recommended for 0.1-0.5 mg/L PAA concentrations and the cerimetric/iodometric titration...

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The combination and optimization study on RB29 dye removal from water by peroxy acid and single-wall carbon nanotubes

Cited by 21 publications

References 21 publications

The role of nanomaterials as effective adsorbents and their applications in wastewater treatment

The role of nanomaterials as effective adsorbents and their applications in wastewater treatment

A comparative study on the basis of adsorption capacity between CNTs and activated carbon as adsorbents for removal of noxious synthetic dyes: a review

Peracids in water treatment: A critical review

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