Efficient Chemical Coagulation-Electrocoagulation-Membrane Filtration Integrated Systems for Baker's Yeast Wastewater Treatment: Experimental and Economic Evaluation

Alavijeh, Hossein Nouri; Sadeghi, Morteza; Kashani, Mohammad Reza Khavari; A, Moheb

doi:10.1016/j.clce.2022.100032

Cited by 15 publications

(9 citation statements)

References 73 publications

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“…Where U is the applied voltage (V), I is the applied current (A), t is the contact time (h), and V is the volume of the polluted solution (m 3 ). 10,11 Data Analysis Data were analyzed using the SPSS software version 16, and One-way ANOVA was performed to determine whether there was the significant effect on removal efficiency of pollutants in wastewater by EC process.…”

Section: Analysis the Energy Consumptionmentioning

confidence: 99%

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Electrocoagulation Process Efficiency for Removing Effluent Pollution Caused by Drilling of Oil Rigs

Ale-Tayeb,

Derikvand,

Solimani Babarsad

et al. 2023

Journal of Advances in Environmental Health Research

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Background: Electrocoagulation (EC) is a safe method for removing environmental pollutants without the need for additional chemical materials. This study investigates the performance of EC in removing chemical oxygen demand (COD), total organic carbon (TOC), total suspended solids (TSS), and turbidity from drilling waste generated by oil rigs. Methods: An experimental study was performed on a pilot scale in an EC reactor provided from a cylindrical glass cell (height: 30 cm and inner diameter: 5 cm), a pair of aluminum and iron electrodes, a power supply, an aeration system. wastewater Samples were collected from one of the drilling rigs in Khuzestan. The effect of current density, operation time and pH parameters on removal of COD, TOC, TSS and turbidity were determined and the optimal values of the parameters were determined. Results: It was found that system voltage, operation time and pH values on the removal efficiency of pollutants were statistically significant at the 0.01 level. The optimum values of pH, current density and operation time were obtained 7, 20 mA/cm2 and 60 minutes, respectively and the removal efficiencies of COD, TOC, TSS and turbidity under the optimum conditions were 72%, 79%, 67% and 63%, respectively. Also, the consumption of energy was estimated to be 8.4 kWh/m3 . Conclusion: The results indicated that the EC process is a cost-effective method in removing pollutants caused by drilling of oil rigs and its efficiency can be improved by applying optimal conditions such as current density and pH.

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Section: Analysis the Energy Consumptionmentioning

confidence: 99%

“…10 The hydrogen ions reduce in the vicinity of the cathode and generate hydroxide flocs and bubbles. 11 Electrodes used in EC process can be arranged in monopolar or bipolar configurations. 9,12 Aluminum and iron cations dissolve from the anode, according to equations 1 and 2 and cathode according to equation 3.…”

Section: Introductionmentioning

confidence: 99%

Electrocoagulation Process Efficiency for Removing Effluent Pollution Caused by Drilling of Oil Rigs

Ale-Tayeb,

Derikvand,

Solimani Babarsad

et al. 2023

Journal of Advances in Environmental Health Research

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“…Nitrate is a prominent contaminant in groundwater and is linked to the eutrophication of water bodies as well as methemoglobinemia, also known as the "blue baby syndrome" (Oh et al 2014). Membrane technology has attracted much attention for numerous applications including desalination and wastewater treatment (Chakrabortty et Alavijeh et al 2022). Nano ltration (NF) is a membrane process with separation characteristics between ultra ltration and reverse osmosis (RO) processes.…”

Section: Introductionmentioning

confidence: 99%

Experimental and economic evaluation of nitrate removal by a nanofiltration membrane

Alavijeh

Sadeghi

Ghahremanfard

2023

Environ Sci Pollut Res

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Membrane nano ltration (NF) process was employed to remove nitrate from synthetic and natural waters. The optimum technical and economical ranges of governing parameters for the water treatment process were determined using Central Composite Design method and Verbernen's economic model. The results of nitrate removal from synthesized water showed the minimum and maximum rates of permeation were 16.5 and 84.3 L/m 2 h (Lmh), respectively. The minimum and maximum nitrate rejection were 44.1% and 78.4%, respectively. Increasing pH had no signi cant effect on permeation ux but increased the nitrate removal rate. In the case of natural water, the minimum and the maximum ow rate were 7.7 and 68.1 Lmh. Furthermore, the minimum and maximum rejection rates of nitrate were 22.1% and 74.8%. The effects of variables on the permeation ux and nitrate removal for natural water were similar to those for synthetic water. However, by increasing pH, the amount of water passing through the membrane decreased. In all experiments, natural water had less permeation ux and less nitrate rejection than synthesized water. Moreover, the total investment cost reduced as the pressure increased. The cost per m 3 of treated water decreased from 3 to 7 bars, then increased as the pressure increased.

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“…This leads to the generation of large volumes of dark-colored wastewater with a high chemical oxygen demand (COD). 10 The wastewater resulting from yeast production has a reported biological oxygen demand (BOD) 5 :COD ratio of 0.69 and a COD concentration of 16 130 mg L −1 . 11 Dilution/pretreatment of wastewater is recommended because high OM concentrations coat the electrode surface, inhibiting electron transfer, and less biodegradable OM has low electrongenerating potential.…”

Section: Introductionmentioning

confidence: 99%

“…In the production of baker's yeast, molasses is utilized, leaving behind unabsorbed organic compounds, sulfates, melanoidins and phenolic substances in the wastewater. This leads to the generation of large volumes of dark‐colored wastewater with a high chemical oxygen demand (COD) 10 . The wastewater resulting from yeast production has a reported biological oxygen demand (BOD) 5 :COD ratio of 0.69 and a COD concentration of 16 130 mg L −1 11 …”

Section: Introductionmentioning

confidence: 99%

Selection of the most suitable pretreatment method by PROMETHEE for baker's yeast production wastewater in Microbial Fuel Cell

Durna Pişkin,

Genç

2023

J of Chemical Tech & Biotech

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BACKGROUNDThe high organic load and low biodegradability of the effluent from baker's yeast production limit its use as a substrate in microbial fuel cell (MFC) systems. In this study, baker's yeast production wastewater was used as a substrate in the anode chamber to assess the impact of various pretreatment methods [dilution, microwave (MW), acidic‐thermal, basic‐thermal and ultrasound (US)] on electricity generation and waste treatment. Additionally, azo dye was used as an electron acceptor at the cathode. Power density and coulomb efficiency were evaluated for electricity generation, and chemical oxygen demand (COD) removal and azo dye removal parameters were evaluated for treatability.RESULTSThe maximum power densities obtained were 83.53, 46.54, 19.41, 67.40, 41 and 33 mW m−2 for MW, acidic thermal, alkaline‐thermal and US pretreatments, diluted raw and raw wastewater, respectively. To determine the most suitable pretreatment method, PROMETHEE was performed using the criteria of maximum power density, COD removal, azo dye removal, coulombic efficiency and pretreatment cost. The most suitable method was found to be MW pretreatment. The order of the alternatives was found to be MW > US > acidic/thermal > diluted raw > raw > alkaline/thermal. With the MW pretreatment, 81.34% azo dye removal, 5 g L−1 COD removal, 0.27% coulombic efficiency and €0.284 L−1 pretreatment cost were obtained.CONCLUSIONThe most suitable pretreatment method to be applied to wastewater for the treatment of baker's yeast production wastewater and high energy production was determined as MW using the PROMETHEE approach. © 2023 The Authors. Journal of Chemical Technology and Biotechnology published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry (SCI).

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Efficient Chemical Coagulation-Electrocoagulation-Membrane Filtration Integrated Systems for Baker's Yeast Wastewater Treatment: Experimental and Economic Evaluation

Cited by 15 publications

References 73 publications

Electrocoagulation Process Efficiency for Removing Effluent Pollution Caused by Drilling of Oil Rigs

Electrocoagulation Process Efficiency for Removing Effluent Pollution Caused by Drilling of Oil Rigs

Experimental and economic evaluation of nitrate removal by a nanofiltration membrane

Selection of the most suitable pretreatment method by PROMETHEE for baker's yeast production wastewater in Microbial Fuel Cell

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