Potential of different materials for adsorption of micropollutants from wastewater

Kamińska, Gabriela; Bohdziewicz, Jolanta

doi:10.37190/160413

Cited by 4 publications

(8 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Moreover, under dynamic conditions (long life deposits), it is possible to obtain a higher adsorption capacity due to the adsorption of naphthalene on previously adsorbed particles and biodegradation. The prepared breakthrough curves are described by the following mathematical equations: AG-5: y = 3•10 −10 x 4 − 4•10 −7 x 3 + 0.0002x 2 − 0.0338x + 1.3596; R 2 = 0.9746 (17) DTO: y = 2•10 −10 x 4 − 4•10 −7 x 3 + 0.0002x 2 − 0.0345x + 1.4612; R 2 = 0.9741 (18) Clinoptilolite:…”

Section: Test Results Under Flow Through Conditionsmentioning

confidence: 99%

“…The most effective method of PAHs elimination is the adsorption process. Various adsorbents were used, such as activated coke modified with KOH, activated carbons and their modified forms or carbon nanotubes [ 17 , 18 ]. They also conducted the adsorption studies of the naphthalene solution on coal-based activated carbon modified by microwave induction [ 19 ].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The Efficiency of the Removal of Naphthalene from Aqueous Solutions by Different Adsorbents

Puszkarewicz

Kaleta

2020

IJERPH

View full text Add to dashboard Cite

The paper presents the results of laboratory tests on possibilities to utilize active carbons produced in Poland (AG-5 and DTO) and clinoptilolite for removing naphthalene from a water solution in the adsorption process. The concentration of naphthalene in the model solution was 20 mg/dm3. The effects of pH, dose and adsorption time were determined under static conditions. Adsorption kinetics were consistent with the pseudo-second-order model (PSO). Among the applied models, the best fit was obtained using the Langmuir isotherms. The maximum adsorption capacity for the activated carbons (AG-5 and DTO) equaled 24.57 and 30.28 mg/g, respectively. For clinoptilolite, all the analyzed models of adsorption poorly described the adsorption process. The flow conditions were realized by filtration method. On the basis of the obtained results, the breakthrough curves, so-called isoplanes, were prepared and served in turn to determine the adsorption capacities in flow conditions. The total adsorption capacities determined under dynamic conditions of the AG-5 and DTO activated carbons were 85.63 and 94.54 mg/g, respectively, and only 2.72 mg/g for clinoptilolite. The exit curves (isoplanes) were also utilized to determine the mass penetration zone (the adsorption front height), as well as to calculate the rate of mass-exchange zone advance.

show abstract

Section: Test Results Under Flow Through Conditionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Efficiency of the Removal of Naphthalene from Aqueous Solutions by Different Adsorbents

Puszkarewicz

Kaleta

2020

IJERPH

View full text Add to dashboard Cite

show abstract

“…The SEM images of raw Hal, SWCNT are presented in Figure 1. Hal demonstrated a relatively regular tubular shape, while SWCNT were tangled, due to a very strong interaction between individual tubes [33,34].…”

Section: Resultsmentioning

confidence: 99%

“…In case of samples with Hal:CNT ratio, 85:15 it is a direct consequence of the higher amount of carbon nanotubes that adsorb solute molecules very fast. Many authors proved that carbon nanotubes are able to uptake adsorbates faster than any other common adsorbent [33,51,52]. This is because of the external surface of carbon nanotubes, which is available for sorption and guarantees a quick uptake.…”

Section: Resultsmentioning

confidence: 99%

Preparation, Characterization and Adsorption Potential of Grainy Halloysite-CNT Composites for Anthracene Removal from Aqueous Solution

et al. 2019

Self Cite

View full text Add to dashboard Cite

Grainy Hal-CNT composites were prepared from powder halloysite nanoclay (Hal) and carbon nanotubes (CNTs). The effect of the amount and type of CNTs, as well as calcination temperature on morphology and properties of Hal-CNT composites and their adsorption capacity of anthracene (ANT), were studied. The surface topography of granules was heterogenous, with cracks and channels created during granulation of powder clay and CNTs. In FTIR, spectra were exhibited only in the bands arising from halloysite, due to its dominance in the granules. The increase in the heating temperature to 550 °C resulted in mesoporosity/macroporosity of the granules, the lowest specific surface area (SSA) and poorest adsorption potential. Overall, SSA of all Hal-CNT composites were higher than raw Hal, and by itself, heated halloysite. The larger amount of CNTs enhanced adsorption kinetics due to the more external adsorption sites. The equilibrium was established with the contact time of approximately 30 min for the sample Hal-SWCNT 85:15, while the samples with loading 96:4, it was 60–90 min. Adsorption isotherms for ANT showed L1 type, which is representative for the sorbents with limited adsorption capacity. The Langmuir model described the adsorption process, suggesting a monolayer covering. The sample Hal-SWCNT 85:15 exhibited the highest adsorption capacity of ANT, due to its highest SSA and microporous character.

show abstract

“…Several techniques, including advanced oxidation processes (AOPs) [9][10][11], membrane filtration [12,13], coagulation [14], and adsorption [15,16] have been used to remove micropollutants from different aqueous media. AOPs and membrane filtration are very effective for the elimination of…”

Section: Introductionmentioning

confidence: 99%

Removal of Organic Micropollutants by Grainy Bentonite-Activated Carbon Adsorbent in a Fixed Bed Column

Kamińska

2018

Water

Self Cite

View full text Add to dashboard Cite

Organic micropollutants enter effluent streams and then flow into receiving waters. The volume adversely affects aquatic biota substantially. Therefore, many efforts have been made to develop methods for their elimination. The aim of this study was the removal of organic micropollutants with different properties from WWTP (wastewater treatment plant) effluent in fixed bed columns packed with several combinations of sand, granular activated carbon (GAC), and granular clay-carbonaceous composite. Two types of bentonite-powder activated carbon-based granules (Ben-AC) were prepared within this work, with different calcination temperature. It was found that higher calcination temperature enhanced the surface porosity and adsorption potential versus studied micropollutants due to dihydroxylation resulting in higher chemical activity. Introduction of these granules in the place of GAC in a fixed bed column enhances the removal degree of micropollutants and typical water quality parameters. For example, the reduction degree of color, phosphate, and nitrate concentrations increased from 83%, 69%, and 4% to 95%, 83%, and 24% for column I and II, respectively. The concentration of carbamazepine, octylphenol, nononylphenol, and anthracene was reduced by 75%, 83%, 72%, 99% in column I, while using column II or III their removal was: 86%, 97%, 99%, 99%, respectively. Independent of the column filling, the removal of carbamazepine was the lowest (75–86%), while the highest retention was obtained for anthracene (99%). The study of column performance in the treatment of effluent in time showed that column filled with Ben-AC-400 guaranteed high removal degree in the operating time. The batch adsorption data were better described by both the Langmuir model.

show abstract

Potential of different materials for adsorption of micropollutants from wastewater

Cited by 4 publications

References 4 publications

The Efficiency of the Removal of Naphthalene from Aqueous Solutions by Different Adsorbents

The Efficiency of the Removal of Naphthalene from Aqueous Solutions by Different Adsorbents

Preparation, Characterization and Adsorption Potential of Grainy Halloysite-CNT Composites for Anthracene Removal from Aqueous Solution

Removal of Organic Micropollutants by Grainy Bentonite-Activated Carbon Adsorbent in a Fixed Bed Column

Contact Info

Product

Resources

About