Study on Soybean Oil Plant Wastewater Treatment Using the Electro‐Fenton Technique

Davarnejad, Reza; Sabzehei, Meysam; Parvizi, Fatemeh; Heidari, Saeid; Rashidi, Asma

doi:10.1002/ceat.201800765

Cited by 9 publications

(2 citation statements)

References 41 publications

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“…Also, unwanted liquid, solid and gaseous wastes are generated together with the desired products (edible oils). 1 Edible oil refinery wastewater is generated from the degumming, deacidification, and deodorisation and neutralisation processes. 2 The indiscriminate disposal of this waste and wastewater results in severe environmental pollution and health hazards.…”

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confidence: 99%

Photodegradation and kinetics of edible oil refinery wastewater using titanium dioxide

Aisien

2021

S. Afr. J. Sci.

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Edible oil refinery wastewater (EORW) is one source of environmental pollution in Nigeria. The treatment of EORW before discharge into the environment remains a significant challenge in the edible oil refinery industries. This research was aimed at photocatalytic treatment of EORW using a batch photocatalytic reactor with titanium dioxide photocatalyst. We investigated the physicochemical parameters: chemical oxygen demand (COD), biological oxygen demand (BOD5), oil and grease, phenol, chloride (Cl-), total suspended solids, sulfate (SO42-), and phosphate (PO43-) using American Public Health Association methods. The results showed that the reduction efficiency of the treated EORW with TiO2 catalyst ranged between 65.8% (PO43-) and 87.0% (COD), and the improvement in efficiency was 54.1% (pH) and 60.8% dissolved oxygen. However, the results showed no significant difference (p<0.05) in the control treatment without catalyst. The biodegradability of EORW increased from 0.196 to 0.32. It was observed that the optimum values were an initial EORW concentration of 100 mL/L, irradiation time of 90min, catalyst dose of 1.25 g/L, and an agitation speed of 900 rpm. The kinetics of the photodegradation process was well described by the pseudo-first-order equation (R2>0.96) and pseudo-second-order equation (R2>0.98). The intra-particle diffusion model fairly represented the diffusion mechanism with an R2 value of 0.806. The treated EORW met the most acceptable water quality standards for discharged effluent according to the maximum permissible limits of the Nigerian National Environmental Standards and Regulations Enforcement Agency.

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Section: Introductionmentioning

confidence: 99%

Photodegradation and kinetics of edible oil refinery wastewater using titanium dioxide

Aisien

2021

S. Afr. J. Sci.

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“…Thus, a combination of physical, chemical, and biological treatment units is typically required. For instant, it is typically required to employ the chemical treatment method as a pretreatment step prior to the biological wastewater treatment system [2][3]. Reddy et al [2] suggested removing FOG before other treatments.…”

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Effects of total dissolved solids and organic loadings on the chemical oxygen demand removal by yeast-activated sludge system.

Sinlapacheewa

Sriariyanun

Pornwongthong

2023

IOP Conf. Ser.: Earth Environ. Sci.

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Typically, the soybean oil processing industry generates complex wastewater containing high total dissolved solids (TDS), chemical oxygen demand (COD), and fat oil and grease (FOG) contents with low pH. Therefore, treating this industrial wastewater with the conventional activated sludge (AS) wastewater treatment system is challenging. Yeast can be co-cultured with the activated sludge (AS) called yeast-activated sludge (YAS) to degrade high COD and salinity in the wastewater. However, little is known about the effects of TDS and organic loading (OLRs) on the performance of YAS system with the presence of both Rhodotorula mucilaginosa and Candida xylanilytica. In this study, we evaluated the effects of TDS and organic loading rates (OLRs) on the performances of the YAS system for soybean oil wastewater treatment. Four sequencing batch reactors (SBRs) were operated under aerobic conditions at different TDS concentrations 25%, 50%, 75%, and 100% increasing rate. The results indicated that the TDS at the loading rate of 50% resulted in maximum biomass production. The overloading of the clarifier was observed and possibly caused by the accumulation of solids contained in the influent wastewater. At the OLR of 0.67 kg BOD5/m3-day and the TDS loading rate of 15.5 kg TDS/m3-day, the YAS system achieved the average COD removal efficiencies of 71±1%

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Sequential Treatment of Textile Industry Wastewater Using Electrocoagulation and Photo electro-Fenton Processes

Moazeni

Mirzaei

Baghdadi

et al. 2023

Water Air Soil Pollut

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Study on Soybean Oil Plant Wastewater Treatment Using the Electro‐Fenton Technique

Cited by 9 publications

References 41 publications

Photodegradation and kinetics of edible oil refinery wastewater using titanium dioxide

Photodegradation and kinetics of edible oil refinery wastewater using titanium dioxide

Effects of total dissolved solids and organic loadings on the chemical oxygen demand removal by yeast-activated sludge system.

Sequential Treatment of Textile Industry Wastewater Using Electrocoagulation and Photo electro-Fenton Processes

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