Evaluation of Al‐based nanoparticle‐impregnated sawdust as an adsorbent from byproduct for the removal of arsenic(V) from aqueous solutions

Wu, Kun; Liu, Ting; Lei, Chao; Zhang, Furong

doi:10.1002/ep.12583

Cited by 5 publications

(4 citation statements)

References 56 publications

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“…A relatively high sorption capacity was determined at 4 mg of As(V)/g of Al-GS. A similar sorption behavior was reported for the arsenate removal by Al-Based nanoparticle impregnated sawdust [47]. Table 3 shows a comparison of fluoride and arsenate sorption capacities for different adsorbents.…”

Section: Fluoride and Arsenic Adsorption Isothermssupporting

confidence: 72%

Removal of Fluoride and Arsenate from Aqueous Solutions by Aluminum-Modified Guava Seeds

Ramos-Vargas

Alfaro-Cuevas-Villanueva

Huirache–Acuña

et al. 2018

Applied Sciences

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Featured Application: The adsorbent materials under study could have a potential use for the decontamination of groundwater with high levels of arsenic and fluoride. It could be particularly suitable for application in water treatment for small communities.Abstract: The contamination of groundwater by arsenic and fluoride is a major problem worldwide, causing diseases in the population that uses these waters for their consumption. Therefore, the removal of these types of pollutants from groundwater is a very important issue. In this work, the removal of arsenate and fluoride from aqueous solutions by using aluminum-modified guava seeds (Al-GSs) was evaluated. Batch-type adsorption experiments were carried out with aqueous solutions of As(V) and F − and Al-GSs. The kinetic and equilibrium parameters of adsorption were determined, as well as the effects of adsorbent dose and pH. The adsorbent was characterized by scanning electron microscopy and infrared spectroscopy in order to determine its morphology and the functional groups present in the material. The results showed that hydroxyl and carboxyl are the main groups involved in the adsorption of As(V) and F − . The fluoride adsorption kinetics indicate that the equilibrium time was reached at 150 min and it can be described by the Lagergren model, while for As(V) the equilibrium time was lower (120 min) and the kinetic data were fitted well to the pseudo-second-order model. The Langmuir-Freundlich model can describe the adsorption equilibrium data in all cases. The fluoride adsorption capacity by Al-GS was 0.3445 mg/g, and for As(V) it was 4 mg/g. It can be established that the removal of arsenates and fluoride in Al-GSs is due to chemisorption on a heterogeneous surface.then consumption of these waters may lead to dental fluorosis. From 3 to 6 mg/L of fluoride, skeletal fluorosis may appear, and at higher fluoride levels (>10 mg/L) crippling skeletal fluorosis can be developed [3,4]; these types of fluorosis are irreversible, and no treatment can eliminate symptoms definitively. Keeping fluoride intake within safe levels is the only way to prevent these diseases [5,6]. People in several countries around the world are facing problems of high fluoride levels in drinking water; these problems are more severe and intense depending on different factors, like the geographical and economic status of the affected communities [7]. The World Health Organization (WHO) guidelines for drinking water quality have established that, for areas with a warm climate, fluoride concentration in water should remain below 1 mg/L, while this concentration could be raised up to 1.2 mg/ for areas with a cold climate [3]. In developing countries this problem is more acute, particularly in small urban communities and rural areas [5,8].On the other hand, arsenic content in drinking water is also a worldwide concern, and it represents a great threat to human health. Levels above 10 µg/L of arsenic, which is the maximum level recommended by the WHO, have been reported in drinking water from se...

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Section: Fluoride and Arsenic Adsorption Isothermssupporting

confidence: 72%

Removal of Fluoride and Arsenate from Aqueous Solutions by Aluminum-Modified Guava Seeds

Ramos-Vargas

Alfaro-Cuevas-Villanueva

Huirache–Acuña

et al. 2018

Applied Sciences

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“…The interesting findings from the recent literature like the advantages of different methods, the impregnating agent, and the possible reasons for the adsorption process are discussed below. The adsorption of arsenic from aqueous solution using sawdust impregnated with aluminium oxide was studied by Wu et al 2017. It was investigated that the functional group of oxygen present in aluminium oxides were mainly responsible for adsorption of the pollutant and it was because of surface complexation [38].…”

Section: The Importance Of Porous Materialsmentioning

confidence: 99%

“…The adsorption of arsenic from aqueous solution using sawdust impregnated with aluminium oxide was studied by Wu et al 2017. It was investigated that the functional group of oxygen present in aluminium oxides were mainly responsible for adsorption of the pollutant and it was because of surface complexation [38]. Yang et al explored the feasibility of the activated carbon impregnated with iron used for removing copper from wastewater.…”

Section: The Importance Of Porous Materialsmentioning

confidence: 99%

Various Impregnation Methods Used for the Surface Modification of the Adsorbent: A Review

Girish

2018

IJET

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The water contamination is an important crisis which is to be addressed in the recent time. The pollutants present in wastewater are treated by adsorption using activated carbon, which is considered as one of the effective method. The adsorbent has to be modified to improve the adsorption capacity and the surface properties. Various methods such as physical, chemical treatment, impregnation and functionalization techniques are available. Impregnation is one of the effective method carried out for surface modification and to increase the adsorption capacity. Therefore, current study investigates the different impregnation methods used for the surface modification of the adsorbent. It also reviews the various precursors used for adsorbent preparation, the impregnating agent, the operating conditions and the adsorption capacity of the adsorbent.

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“…The WHO has also adopted 10 ppb as the drinking water standard; however, many countries such as China, Bangladesh and others still use 50 ppb for arsenic in drinking water [21]. Various treatments have been developed and used for arsenic removal [22][23][24][25][26]. However, there are major problems with some methods while others are simply not very efficient and are too expensive [27].…”

Section: Introductionmentioning

confidence: 99%

Remediation of Arsenic in Water Using Unique Ashed Biomass Material

Dorris¹,

Shukla

Musaddaq

2019

AJOCS

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The contamination of the world’s water supply due to various contaminants has caused the clean water supply to shrink around the globe. The problem is not only an issue with developing nations; in fact, many developed countries are facing the same turmoil. With the globalization, industrialization and weak enforcement of environmental regulations, waste water is discharged into clean water resources whereby contaminating the water. Out of the long list of contaminants many heavy metals find their way into the clean drinking water supply. The heavy metals arsenic (As), lead (Pb), and mercury (Hg) as well as many others are also discharged into water resources. There are numerous methods for removal of these heavy metals from water including filtration, chemical precipitation, ion exchange, adsorption, electro deposition as well as others but most are expensive and or not completely satisfactory. Arsenic and its compounds are often used as pesticides, herbicides, insecticides and various alloys and often find their way into the drinking water supply through various industrial sources. A cost-effective remediation of arsenic in water using readily available material is urgently needed. An ashed waste material consisting primarily of Azadirachta indica (Neem leaves) and Mangifera indica (Mango leaves) has been found effective in removing both arsenic (III) and (V) from water. The utilization of this ashed material achieves the concept of using waste material from one source, used by another and therefore benefiting both. The adsorbent is very effective at pH =7 and ion exchange appears to be the major adsorption mechanisms for binding the metal ions to the plant ash material. The material shows sufficient operation capacity to indicate the possibility of its use in remote rural areas as well as in an urban water treatment facility.

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Evaluation of Al‐based nanoparticle‐impregnated sawdust as an adsorbent from byproduct for the removal of arsenic(V) from aqueous solutions

Cited by 5 publications

References 56 publications

Removal of Fluoride and Arsenate from Aqueous Solutions by Aluminum-Modified Guava Seeds

Removal of Fluoride and Arsenate from Aqueous Solutions by Aluminum-Modified Guava Seeds

Various Impregnation Methods Used for the Surface Modification of the Adsorbent: A Review

Remediation of Arsenic in Water Using Unique Ashed Biomass Material

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