Biological removal of phenol from strong wastewaters using a novel MSBR

Moussavi, Gholamreza; Mahmoudi, Maryam; Barikbin, Behnam

doi:10.1016/j.watres.2008.12.026

Cited by 107 publications

(56 citation statements)

References 32 publications

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“…The level of phenol in these than chemically oxidize or physically transfer pollution effluents may be as high as 6,000 mg/l [1]. Phenol is a toxic from one phase to another [7]. compound which may cause serious health hazards such Efforts are now being made to remove organic as blood changes, liver and kidney damage and cardiac contaminants as far as possible without external resources toxicity including weak pulse, cardiac depression and of energy, taking advantage of the biogas produced, reduced blood pressure.…”

Section: Introductionmentioning

confidence: 99%

Phenol Biodegradation Kinetics in an Anaerobic Batch Reactor

Firozjaee

Najafpour

Khavarpour

et al. 2011

World Environmental and Water Resources Congress 2011

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Biodegradation of phenol with mixed consortia of bacterial was studied in an anaerobic batch reactor. The culture was acclimatized for a period of two months to grow in mineral salt medium contained phenol as the sole carbon source. Minimum and maximum concentrations of 50 and 1000 mg/l of phenol in the medium were used for the purpose of culture adaptation. The goals of these experiments were to determine the kinetics of biodegradation by determination of biomass growth rates and phenol concentrations with respect to incubation time. Substrate inhibition kinetics and specific growth rate were defined while data were fitted in Haldane model. The specific growth rate, half-saturation and inhibition coefficients for Haldane model were 0.067 hG , 25.32 and 200 mg/l, respectively. The biokinetic parameters were used to predict the biodegradation 1 profile, which was quite consistent with the obtained experimental data. The results were useful for the estimation of relations between growth rate and substrate utilization, which may be used to evaluate mass balance for a wastewater treatment plant contained phenol compound.

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Section: Introductionmentioning

confidence: 99%

Phenol Biodegradation Kinetics in an Anaerobic Batch Reactor

Firozjaee

Najafpour

Khavarpour

et al. 2011

World Environmental and Water Resources Congress 2011

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“…Constant removal percentages showed that pseudo-steady state was obtained (with variations about 3%) (12). The mineralization degree of SDBS was measured by the chemical oxygen demand (COD) method (13). Obtaining each pseudo-steady state took almost 21-25 days.…”

Section: Methodsmentioning

confidence: 99%

Removal of Sodium Dodecylbenzene Sulfonate by Moving Bed Biofilm Reactor, Using Synthetic Media

2014

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Background: Detergents and difficulties of their presence in the water and wastewater cause various problems such as foam production, anomalies in the growth of algae, and accumulation and dispersion in aqueous environments. Objectives: The aim of this study was to examine and compare the moving bed biofilm reactor with another reactor without media (carries) for anionic surfactants removal. Materials and Methods: In this study, the media was from the 2H Company with specific surface of 535 m 2 /m 3 and the experiment reactor was made of a 4-mm plexiglass. The experiment was conducted by using two reactor, as one of them was without media, with exactly similar conditions to compare their operations. The standard method (MBAS) was used to measure the anionic surfactant. The concentrations of the examined anionic surfactant were 50, 100, 200, 300, and 400 mg/L in hydraulic retention times (HRTs) of 72, 24 and 8 hours. Results: The removal percentage for both reactors at 50 mg/L concentration of pollutant was same, but after gradually increasing the pollutant concentration and decreasing the HRT, the media-containing reactor had significant efficiency in comparison with the other one. The optimum condition in this experiment was obtained at HRT of about 24 hours and 200 mg/L pollutant concentration with 99.2% removal. Conclusions: Regarding the anionic surfactant standard in Iran which is 1.5 mg/L for surface water discharge, using this process is suitable for treating municipal wastewater and industrial wastewater, containing 100-200 mg/L pollutant. However, for the industries that produce detergents, discharging more than 200 mg/L surfactants to the wastewater, using supplementary treatments for achieving the discharge standard are required.

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“…Several methods have been investigated for removing and degradation of phenolic compounds from aqueous solutions. These include physicochemical treatment processes, chemical oxidation, biological degradation and combined techniques [10][11][12][13]. Many of these processes have disadvantages such as the generation of dangerous by-products, low efficiency and applicability to limit concentrations of pollutants [9].…”

Section: Introductionmentioning

confidence: 99%

Phenol Removal from Aqueous Solution by Adsorption Process: Study of The Nanoparticles Performance Prepared from Alo vera and Mesquite (Prosopis) Leaves

et al. 2017

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This study was performed to measure the potential utilization of agro-waste to generate nanoparticles and evaluate the capability of it's as a low cost adsorbent for removal of phenol. Adsorption studies for phenol removal by using Aloe vera and Mesquite leaves nanoparticles carried out under various experimental conditions including pH, nanobioadsorbent dosage, phenol concentration, contact time, temperature and ionic strength in a batch reactor. The adsorption kinetics by pseudo-first order and pseudo-second order models and isotherm technique by Freundlich and Langmuir isotherms models were applied. The results showed that the rate of phenol adsorption increases in both nano-bioadsorbents with an increase of pH up to 7, adsorbent dosage up to 0.08 gL -1 , phenol initial concentration up to 32 mgL -1 , contact time up to 60 min and raising in temperature. The adsorption data followed the Freundlich isotherm model. The kinetic studies indicated that the adsorption of phenol with nano-bioadsorbents was best described by the pseudo second order kinetics. We found that the nanoparticles prepared from Aloe vera and Mesquite leaves had a high capability in adsorption of phenol, beside the point that they could be accessed at a low cost. These agrowastes can be used to remove phenol from aqueous environments.

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Biological removal of phenol from strong wastewaters using a novel MSBR

Cited by 107 publications

References 32 publications

Phenol Biodegradation Kinetics in an Anaerobic Batch Reactor

Phenol Biodegradation Kinetics in an Anaerobic Batch Reactor

Removal of Sodium Dodecylbenzene Sulfonate by Moving Bed Biofilm Reactor, Using Synthetic Media

Phenol Removal from Aqueous Solution by Adsorption Process: Study of The Nanoparticles Performance Prepared from Alo vera and Mesquite (Prosopis) Leaves

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