Treatment of tropical stabilised landfill leachate using palm oil fuel ash: isothermal and kinetic studies

Abuabdou, Salahaldin M.A.; Teng, Ong Wei; Bashir, Mohammed J.K.; Aun, Ng Choon; Sethupathi, Sumathi; Pratt, Lawrence M.

doi:10.5004/dwt.2019.23662

Cited by 9 publications

(5 citation statements)

References 25 publications

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“…This value is greater compared to the biomass-based adsorbents prepared by Abuabdou et al. [ 52 ] and Erabee et al. [ 53 ], which gave 50.8 and 45.4 μg/g, respectively.…”

Section: Resultsmentioning

confidence: 62%

“…As can be seen in Table 4, the estimated maximum adsorption capacity (Q m ) is as high as 797.95 μg/g. This value is greater compared to the biomass-based adsorbents prepared by Abuabdou et al [52] and Erabee et al [53], which gave 50.8 and 45.4 μg/g, respectively. Yet, AC/AlgPU still need to be improved to achieve higher maximum adsorption capacity as reported by many other studies [54,55].…”

Section: Isotherm Studiesmentioning

confidence: 60%

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Polyurethane film prepared from ball-milled algal polyol particle and activated carbon filler for NH3–N removal

Marlina

Iqhrammullah

Saleha

et al. 2020

Heliyon

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This research offers a novel approach of free chemical preparation to obtain algae-based biopolyol through a ball milling method. The algae-based polyurethane (AlgPU) film was obtained from a casting solution made of ball-milled algal polyol particle and methylene diphenyl diisocyanate (MDI). The characteristics of the material had been investigated using Fourier Transform Infrared, Scanning Electron Microscopy – Electron Dispersive Spectroscopy, Differential Scanning Calorimetry, and Tensile Strength Analysis. The surface area was determined by Brunauer–Emmett–Teller (BET) isotherm, meanwhile the total pore volume was by Barrett-Joyner-Halenda (BJH) isotherm, based on the adsorption-desorption of N 2 . The addition of activated carbon contributed in the increase of functional group and surface area, which were important for the NH 3 –N removal. As a result, the adsorption capacity increased greatly after the addition of activated carbon (from 187.84 to 393.43 μg/g). The results also suggested AlgPU as a good matrix for immobilizing activated carbon filler. The adsorption shows a better fit with Langmuir isotherm model, with R 2 = 0.97487 and root-mean-square error (RMSE) = 33.91952, compared to Freundlich isotherm model (R 2 = 0.96477 and RMSE = 44.05388). This means the NH 3 –N adsorption followed the assumption of homogenous and monolayer adsorption, in which the maximum adsorption was found to be 797.95 μg/g. This research suggests the potential of newly developed material for NH 3 –N removal.

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“…This value is greater compared to the biomass-based adsorbents prepared by Abuabdou et al. [ 52 ] and Erabee et al. [ 53 ], which gave 50.8 and 45.4 μg/g, respectively.…”

Section: Resultsmentioning

confidence: 62%

Section: Isotherm Studiesmentioning

confidence: 60%

Polyurethane film prepared from ball-milled algal polyol particle and activated carbon filler for NH3–N removal

Marlina

Iqhrammullah

Saleha

et al. 2020

Heliyon

View full text Add to dashboard Cite

show abstract

“…2 and Table 3, the removal of organic contaminants by a sorbent fraction of 5-7 mm is also described by a typical sorption curve, but the sorption indicators are much lowerfor example, the maximum sorption capacity is 4.3 times. [22] 75.44 [22] 74-95 [23] 83.61 [18] * -exposure time 30 min, ** -exposure time 110 min.…”

Section: Resultsmentioning

confidence: 99%

Treatment of Real Wastewater from Organic Contaminants by Using Biochar

Baltrėnaitė-Gedienė

Iurchenko

Lebedeva

et al. 2021

MSF

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In a number of water use schemes (water and wastewater treatment), physicochemical treatment methods, in particular adsorption, have been successfully used. However, widespread adoption of these methods is hindered by the high cost of sorbents. One of the promising solutions to these problem of sorption treatment is the use of biochar. Due to its high specific surface area, well-developed porous structure, and surface functionality, biochar has been used as inexpensive adsorbent. The purpose of the laboratory experiments is to determine the sorption properties of biochar obtained from pine – sorption capacity, sorption rate, and purification effect – while removing organic contaminants from real paper mill wastewater. The sorption properties of biochar were studied under static and dynamic conditions, varying the size of the fractions, and processing time. The sorption characteristics of biochar of all the studied fractions were established and it was shown that the most effective sorbent in removing organic contaminants is the 1-biochar’s fraction of (sorption capacity of 11.9 mg of COD per of sorbent). The data obtained enable theoretically substantiate the presence of certain functional groups on the surface of the researched biochar, as well as to develop technological regimes for the treatment of natural and waste waters of a certain composition with its help.

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“…The NH 3 -N removal were gradually increased with the increasing of PAC concentration to some extent, which means that the incorporated PAC has enhanced the membrane performance in terms of NH 3 -N removal, in addition to the main separation action gained by the membrane texture itself. This good result might be ascribed to the high adsorption characteristics of the used PAC, which significantly improved the fabricated membrane efficiency [5,52].…”

Section: Pure Flux and Transmembrane Pressure Studiesmentioning

confidence: 94%

“…Thus, it is almost impossible to treat this kind of leachate using some biological treatment technique [4]. To date, various purification techniques such as adsorption [5], coagulation [6], advanced oxidation [7], electro-Fenton [8], and combinations of these processes [9,10] have been successfully introduced to eliminate the organic contaminates from stabilized leachate. Among these techniques, membrane filtration could be one of the most suitable purification process [11].…”

Section: Introductionmentioning

confidence: 99%

A New Polyvinylidene Fluoride Membrane Synthesized by Integrating of Powdered Activated Carbon for Treatment of Stabilized Leachate

Abuabdou

Jaffari

et al. 2021

Water

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Stabilized landfill leachate contains a wide variety of highly concentrated non-biodegradable organics, which are extremely toxic to the environment. Though numerous techniques have been developed for leachate treatment, advanced membrane filtration is one of the most environmentally friendly methods to purify wastewater effectively. In the current study, a novel polymeric membrane was produced by integrating powdered activated carbon (PAC) on polyvinylidene fluoride (PVDF) to synthesize a thin membrane using the phase inversion method. The membrane design was optimized using response surface methodology (RSM). The fabricated membrane was effectively applied for the filtration of stabilized leachate using a cross-flow ring (CFR) test. The findings suggested that the filtration properties of fabricated membrane were effectively enhanced through the incorporation of PAC. The optimum removal efficiencies by the fabricated membrane (14.9 wt.% PVDF, 1.0 wt.% PAC) were 35.34, 48.71, and 22.00% for COD, colour and NH3-N, respectively. Water flux and transmembrane pressure were also enhanced by the incorporated PAC and recorded 61.0 L/m2·h and 0.67 bar, respectively, under the conditions of the optimum removal efficiency. Moreover, the performance of fabricated membranes in terms of pollutant removal, pure water permeation, and different morphological characteristics were systematically analyzed. Despite the limited achievement, which might be improved by the addition of a hydrophilic additive, the study offers an efficient way to fabricate PVDF-PAC membrane and to optimize its treatability through the RSM tool.

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Treatment of tropical stabilised landfill leachate using palm oil fuel ash: isothermal and kinetic studies

Cited by 9 publications

References 25 publications

Polyurethane film prepared from ball-milled algal polyol particle and activated carbon filler for NH3–N removal

Polyurethane film prepared from ball-milled algal polyol particle and activated carbon filler for NH3–N removal

Treatment of Real Wastewater from Organic Contaminants by Using Biochar

A New Polyvinylidene Fluoride Membrane Synthesized by Integrating of Powdered Activated Carbon for Treatment of Stabilized Leachate

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