Electrostatic Biosorption of COD, Mn and H2S on EFB-Based Activated Carbon Produced through Steam Pyrolysis: An Analysis Based on Surface Chemistry, Equilibria and Kinetics

Amosa, Mutiu K.; Jami, Mohammed Saedi; Al-Khatib, Ma An Fahmi Rashid

doi:10.1007/s12649-015-9435-7

Cited by 61 publications

(23 citation statements)

References 43 publications

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“…), it is difficult to biodegrade when discharged into waste streams. Adsorption has been successfully employed for the removal of organic constituents (Muyibi et al 2014;Amosa et al 2016, Akpomie 2018, and inorganic contents such as dissolved gases, dissolved solids, suspended solids, turbidity and colour (Alkhatib et al 2014). A total dissolved solid is a parameter which gives the index of dissolved compounds both organic and inorganic present in wastewater (Dhall et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Application of response surface methodology for optimization of dissolved solids adsorption by activated coal

et al. 2019

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The adsorptive removal of total dissolved solids by activated coal using response surface methodology was investigated. A four-variable central composite experimental design was applied to correlate the adsorption variables (effluent pH, adsorbent dosage, contact time, and adsorption temperature). The adsorption variables were optimized based on the removal of total dissolved solids from fibre cement industry effluent. Three-dimensional surface plots were generated to estimate the effect of the combinations of the independent variables on the adsorption efficiency. The results of the model validation gave experimental yield 96.2%, predicted yield 96.5% obtained at effluent pH 6.27, adsorbent dosage 27.60 mg L −1 , contact time 48.00 min, and adsorption temperature of 31.00 °C. The good agreement found between observed and predicted values supports the suitability of the applied model to predict the adsorption treatment.

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Section: Introductionmentioning

confidence: 99%

Application of response surface methodology for optimization of dissolved solids adsorption by activated coal

et al. 2019

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“…The PAC employed in this investigation was characterized with a high surface area of 886.2 m 2 /g with functional groups suitable for positive removal of some of the feedwater constituents. A detailed characterization of the PAC has been reported in our previous studies (Amosa, 2015;Amosa et al, 2016b). Furthermore, two commercially available MF membrane cassettes were investigated.…”

Section: Methodsmentioning

confidence: 99%

“…To demonstrate this, the current investigation has been focused on the mechanistic analysis of the filter cake build-up by suspended solid particles present in BPOME which is a multicomponent high strength feedwater after an upstream adsorption process over MF membranes. It must be noted that the evaluative effectiveness of the upstream adsorption process in reducing the foulants or pollutant strength of the wastewater is not discussed here as we have extensively reported this elsewhere (Amosa, 2015;Amosa, 2016;Amosa et al, 2016b;Amosa et al, 2015;Amosa et al, 2016c;Muyibi et al, 2014). Rather, we investigate the cake compressibility variation with the membrane porosity and transmembrane pressure to better understand the importance of cake compressibility of a feedwater for proper and effective design of membrane processes involving microfiltration membranes.…”

Section: Introductionmentioning

confidence: 99%

Cake Compressibility Analysis of BPOME from a Hybrid Adsorption‐Microfiltration Process

Amosa

Jami²,

Al-Khatib³

et al. 2017

Water Environment Research

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This study investigates the utility of a hybrid adsorption-membrane process for cake compressibility evaluation of biotreated palm oil mill effluent (BPOME). A low-cost empty fruit bunch (EFB) based powdered activated carbon (PAC) was employed for the upstream adsorption process with operation conditions of 60 g/L PAC dose, 68 min mixing time, and 200 rpm mixing speed to reduce the feed-water strength and alleviate probable fouling of the membranes. Two polyethersulfone microfiltration (MF) membranes of 0.1 and 0.2 μm pore sizes were investigated under constant transmembrane pressures (TMP) of 40, 80, and 120 kPa. The compressibility factors (z), which was obtained from the slopes of power plots (function of specific cake resistance (α) and pressure gradient) were evaluated. The z values of 0.32 and 0.52, respectively obtained, for the 0.1 and 0.2 μm MF membranes provided compressible and stable z values as observed from their power plots. Besides, these membranes were found suitable for the measurement of z since the results are in consonance with the established principle of cake compressibility. Moreover, the upstream adsorption mitigated the clogging of the membranes which ultimately led to moderate resistances and cake compressibility. These are indications that with the secondary cake filtration, a sustainable flux can be achieved during BPOME filtration. The membranes exhibited close to 100% restoration after cleaning.

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“…The band in the frequency range of 1500 to 1590 cm -1 (centered at 1555 cm -1 ) shows the ring vibration in a large aromatic skeleton that is generally found in carbonaceous materials, such as activated carbon (Sun and Tomkinson, 2001). Aromatic bonds are known as enhancing adsorption process (Amosa et al, 2016d;Çe¸cen and Aktas , 2012). The band at 1463 cm -1 could be assigned to the OHbending band.…”

Section: Reaction Base Kinetic Modelsmentioning

confidence: 99%

“…The changes observed in these bands supported the findings of isotherm and kinetic models that indicate chemisorption. The hydrogen bonding is stronger than the reversible or physisorption processes that are usually characterized by weak Van der Waals bonding (Amosa et al, 2016d;Çe¸cen and Aktas , 2012).…”

Section: Reaction Base Kinetic Modelsmentioning

confidence: 99%

Removal of Organic Matter and Etodolac from Pharmaceutical Industry Wastewater by PAC Adsorption

Vergili¹,

Gencdal²

2017

Water Environment Research

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The removal of organic matter and etodolac (an anti-inflammatory pharmaceutical) from a real process wastewater by using powdered activated carbon (PAC) adsorption before and after Fenton oxidation has been studied. The wastewater sample is collected from the final stage of chemical synthesis of a pharmaceutical (etodolac). Fenton oxidation resulted with decrease in chemical oxygen demand (84% removal) and etodolac concentration was reduced to 0.7 mg L-1. Optimum adsorption equilibrium conditions were found as t = 16 hours, and m = 10 g L-1. The Freundlich model showed the best fit for the adsorption of both wastewater with R2 values of 0.89 and 0.99. Lower pseudo-second-order rate constant (k2) (0.067 < 2.62) obtained from the adsorption of raw wastewater with higher organic matter concentration confirms the chemisorption of the adsorbates onto the PAC. Pore surface mass diffusion with R2 value of 0.92 was found as rate-controlling step for adsorption process with Fenton pre-treated wastewater.

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Electrostatic Biosorption of COD, Mn and H2S on EFB-Based Activated Carbon Produced through Steam Pyrolysis: An Analysis Based on Surface Chemistry, Equilibria and Kinetics

Cited by 61 publications

References 43 publications

Application of response surface methodology for optimization of dissolved solids adsorption by activated coal

Application of response surface methodology for optimization of dissolved solids adsorption by activated coal

Cake Compressibility Analysis of BPOME from a Hybrid Adsorption‐Microfiltration Process

Removal of Organic Matter and Etodolac from Pharmaceutical Industry Wastewater by PAC Adsorption

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