A comparative study of synthetic and natural coagulants for silver nanoparticles removal from wastewater

Ahmed, Toqeer; Bhatti, Zulfiqar Ahmad; Maqbool, Farhana; Mahmood, Qaisar; Faridullah,; Qayyum, Sumaira; Mushtaq, Naveed

doi:10.1080/19443994.2015.1093554

Cited by 12 publications

(4 citation statements)

References 17 publications

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“…The present data revealed that the removal efficiency of AgNPs increase by increasing the amounts of MWCNTS (Table 1). This result was agreed with [42] who use four synthetic and natural coagulants as attractive option for AgNPs removal at small-scale, the authors observed that the removal percent of AgNPs increases with the increase in coagulant doses, and also in agreement with [43] Figure 3 and Table 2 Values within columns with no common superscript differ significantly (P ˂ 0.05). …”

Section: Effect Of Mwcnts On Adsorption Of Agnpssupporting

confidence: 80%

Adsorption of Silver Nanoparticles from Aqueous Solution by Multiwalled Carbon Nanotubes

Hassan¹,

Farghali²

2017

ANP

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Silver nanoparticles (AgNPs) are becoming an emerging pollutant of the environment. In this study, the efficacy of Multiwalled carbon nanotubes (MWCNTS) to remove AgNPs from aqueous solution at a concentration of 250 and 500 mg/100 ml MWCNTS was investigated. The results showed that the adsorption of AgNPs by 250 and 500 mg/100 ml MWCNTS after a contact time of 10 min., 30 min., 60 min., 120 min. and 240 min was 33.95%, 34.36%, 40.32%, 45.33%, 58.53% and 57.29%, 61.27%, 64.89%, 87.21%, 88.58%, respectively. The statistical analysis of data showed that, after adding 250 and 500 mg/100 ml MWCNTS, the total residues of AgNPs were significantly reduced in all MWCNTS exposed samples when compared to the control groups (P < 0.05). Moreover, at the two used concentrations, there were significant differences between 240 min. and all other contact times. The result concluded that the removal percent of AgNPs from aqueous solution was increased with the increase in contact time and concentrations of MWCNTS. Additionally, MWCNTS are expected to be potential adsorbent in the future due to their high removal capacity of nano-sized silver.

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Section: Effect Of Mwcnts On Adsorption Of Agnpssupporting

confidence: 80%

Adsorption of Silver Nanoparticles from Aqueous Solution by Multiwalled Carbon Nanotubes

Hassan¹,

Farghali²

2017

ANP

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“…ENPs may bioaccumulate in important parts of the body, such as the brain, lungs, and/or liver, which can be harmful to health [5]. For example, Ag-NPs are likely to cause irreversible damage to the human body, such as changes in neurotransmitter levels and liver enzymes, and affect the human immune system [6].…”

Section: Introductionmentioning

confidence: 99%

“…As the knowledge on NPs becomes clear, methods for treating NPs in water (e.g., coagulation/flocculation/sedimentation, membrane filtration, adsorption, and oxidation) have been actively explored [5,[14][15][16]. For example, Jiang et al [15] found that the fluoroethylene fluoride microporous membrane is a new type of environmentally friendly industrial microporous membrane with a relatively low cost, exhibiting a ENP removal rate of up to 94.8%.…”

Section: Introductionmentioning

confidence: 99%

Occurrence and removal of engineered nanoparticles in drinking water treatment and wastewater treatment processes: A review

Kim

Jang

et al. 2021

Environmental Engineering Research

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Engineered nanoparticles (ENPs) are widely used in various industrial products and consumer goods, resulting in their widespread existence, particularly in natural water systems and water and wastewater treatment plants. Their presence in surface water for human consumption may severely harm human health. Therefore, this review examines new findings and developments in the removal technology of ENPs in drinking water and wastewater treatment processes since the publication of the literature by Park et al. [1]. By evaluating recent articles, this review investigates the occurrence of ENPs, discusses the transport of nanoparticles (NPs) in various drinking water and wastewater treatment processes, and draws corresponding practical conclusions. Moreover, this review provides brief suggestions and predictions for the future development of NP removal technologies in water and wastewater treatment plants.

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“…The residual aluminum that is found in the treated water could cause serious health issues such as Alzheimer's disease. Additionally, some clinical observations and epidemiological studies have proven that there is a high positive correlation between Alzheimer's disease and the residual aluminum that is present in drinking water [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Optimized Use of Ferric Chloride and Sesbania Seed Gum (SSG) as Sustainable Coagulant Aid for Turbidity Reduction in Drinking Water Treatment

et al. 2020

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The growing global concern with environmental issues has raised the interest in the research into natural biopolymers as a coagulant aid in order to reduce the use of inorganic coagulants. This paper investigated the feasibility of sesbania seed gum (SSG) as a plant-based coagulant aid and ferric chloride as a coagulant in drinking water treatment. Acid extraction method marked the highest and most promising extraction yield at 20.8%, as compared to other extraction methods. Further, the SSG extracted carried a weak negative charge of −3.02 mV, which is classified as a near neutral coagulant aid. Hydroxyl and carboxyl functional groups, which aid in coagulation–flocculation, were found in the SSG. These physiochemical analyses results evinced good characteristics of SSG as a coagulant aid. On the other hand, response surface methodology (RSM) with three-factor Box–Behnken design (BBD) was employed to evaluate and optimize the reaction condition of the coagulation–flocculation process in drinking water treatment. A quadratic polynomial model was fitted to the data with a high value of R2 (0.9901). Model validation experiments revealed the good correspondence between actual and predicted values. In drinking water treatment, a promising 98.3% turbidity reduction was achieved with 10.2 mg/L of FeCl3 and 4.52 mg/L of SSG. Therefore, SSG exhibited potential as a coagulant aid in drinking water treatment.

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A comparative study of synthetic and natural coagulants for silver nanoparticles removal from wastewater

Cited by 12 publications

References 17 publications

Adsorption of Silver Nanoparticles from Aqueous Solution by Multiwalled Carbon Nanotubes

Adsorption of Silver Nanoparticles from Aqueous Solution by Multiwalled Carbon Nanotubes

Occurrence and removal of engineered nanoparticles in drinking water treatment and wastewater treatment processes: A review

Optimized Use of Ferric Chloride and Sesbania Seed Gum (SSG) as Sustainable Coagulant Aid for Turbidity Reduction in Drinking Water Treatment

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