Techno-economical aspects of electrocoagulation optimization in three acid azo dyes’ removal comparison

Taheri, M.

doi:10.1016/j.clce.2022.100007

Cited by 21 publications

(12 citation statements)

References 42 publications

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“…The 1‐h and 3‐h models possess a nonsignificant lack of fit relative to the pure error ( p > 0.05), indicating the adequacy of those models. For the 5‐h model, the lack of fit was significant ( p < 0.05), which is likely a result of less error in the experiments of the central points of the Box–Behnken Design than that of the other design points' experiments (Taheri, 2022).…”

Section: Resultsmentioning

confidence: 99%

Supercritical carbon dioxide extraction of oils from Andean lupin beans: Lab‐scale performance, process scale‐up, and economic evaluation

Kniepkamp

Thie

et al. 2023

J Food Process Engineering

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Oil extraction from Andean lupin beans (Lupinus mutabilis SWEET) via supercritical carbon dioxide (scCO 2 ) was studied on both lab scale and pilot scale. On the lab scale, the effect of pressure, solvent-to-feed ratio (S/F), sample particle size and temperature on oil yield were evaluated. The oil quality (fatty acid [FA] composition and tocopherol content) were investigated. Five-hour scCO 2 extraction yielded about 86% oil of Soxhlet extraction (using hexane as solvent). The fraction of unsaturated FA rose with extraction pressure at specific time. High tocopherol contents were detected in oils extracted at low pressure. An increase in temperature was unfavorable to oil and tocopherol yield, thereby confirming the validity for preserving oil extract quality under a mild scCO 2 extraction condition. Oil quality and yield did not have identical optimum settings, opening up possibilities for producing different qualities of oils. Pilot-scale extraction offered comparable oil yield to lab-scale extraction at similar S/F ratio. Economic evaluation showed that it is promising to implement industrial scale scCO 2 process for lupin oil extraction. It was predicted that, at a specific industrial scale of extraction (2 Â 1000 L, 550 bar, 40 C and S/F of 24), the manufacturing cost of oils got close to actual commercial production cost. Practical ApplicationThis study applied an environment-friendly high-pressure extraction method, supercritical carbon dioxide (scCO 2 ) extraction, to separate oils from Andean lupin beans (Lupinus mutabilis SWEET). ScCO 2 extraction can serve as an alternative oil extraction method to conventional ones that use fossil-derived organic solvents as the extractant. Up-scaled scCO 2 processing was estimated to be economically viable for commercial lupin oil production.

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Section: Resultsmentioning

confidence: 99%

Supercritical carbon dioxide extraction of oils from Andean lupin beans: Lab‐scale performance, process scale‐up, and economic evaluation

Kniepkamp

Thie

et al. 2023

J Food Process Engineering

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“…( 8)- (10) according to the electrical energy price taken as 0.00378 US$ kWh -1 and electrical energy as 0.00378 US$ kWh -1 in Iran in 2022. The results obtained were 100 % removal of Acid Brown 14 with 0.67 US$ kg -1 removed dye, 100 % removal of Acid Orange 71.12 US$ kg -1 removed dye, and 57.24 % removal of Acid Red 18 with 6.82 US$ kg -1 removed dye using Pareto solution [79].…”

Section: Electrocoagulationmentioning

confidence: 99%

“…Recently, Tehriet al [79] investigated the techno-economical aspects of the removal of three azo acid dyes (Acid red 18, Acid brown 14, Acid orange 7) by electrocoagulation. They optimized the parameters using response surface methodology.…”

Section: Electrocoagulationmentioning

confidence: 99%

“…According to the Pareto solutions, units of the operating cost and types of dye used are the important factors to be considered for the treatment process. Four independent factors were taken for examination by response surface methodology, including pH, initial dye concentration, current density, and reaction time ranging from pH 4-10, 0-600 mg L -1 , 41.67-291.66 A m -2 , and 3-15 min, respectively [79]. They observed that all factors are not essential for these three dyes for dye removal efficiency and that the type of dye and operating cost unit could also affect the removal rate of the dye.…”

Section: Electrocoagulationmentioning

confidence: 99%

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Mechanism and Techno‐Economic Analysis of the Electrochemical Process

Ranga

Sinha

2023

ChemBioEng Reviews

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The textile industry utilizes numerous chemicals ranging from solvents to resins and caustic soda to bleach, having a harsh environmental impact. A large amount of colored dye in wastewater is released. Non-biodegradable heavy metals and chlorine accumulate in organs of marine and terrestrial life, leading to various diseases. So, there is an urgent need to treat textile wastewater. Up to date, techno-economic analyses of all electrochemical processes have not been reviewed for textile wastewater treatment. In this review, the focus is on the tertiary treatment methods, mainly on electrochemical treatments, i.e., electrocoagulation, electro-Fenton, electrooxidation, photoelectrochemical (PEC) process, and solar electrophoto-Fenton process (SPEF) with their mechanisms and techno-economic analyses. SPEF treatment was found to be advantageous in terms of efficiency and economic perspective as it utilizes solar energy instead of electrical energy and the cost of the PEC process can also be recovered by the generation of hydrogen.

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“…There are various methods for textile dye removal. [5][6][7][8] But in recent years, researchers have emphasized dye recovery and reuse in the same industry as a perfect solution. [9] Although other treatment processes can be DOI: 10.1002/gch2.202300052 applied to help the process, many studies have opted for membrane separation as an inseparable part of the process within the textile industry.…”

Section: Introductionmentioning

confidence: 99%

Advances in Nanohybrid Membranes for Dye Reduction: A Comprehensive Review

Taheri

2023

Global Challenges

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Separating valuable materials such as dyes from wastewater using membranes and returning them to the production line is a desirable environmental and economical procedure. However, sometimes, besides filtration, adsorption, and separation processes, pollutant destruction also can be suitable using photocatalytic membranes. The art of producing nanohybrid materials in contrast with nanocomposites encompasses nanomaterial synthesis as a new product with different properties from raw materials for nanohybrids versus the composition of nanomaterials for nanocomposites. According to the findings of this research, confirming proper synthesis of nanohybrid is one challenge that can be overcome by different analyses, other researchers' reports, and the theoretical assessment of physical or chemical reactions. The application of organic‐inorganic nanomaterials and frameworks is another challenge that is discussed in the present work. According to the findings, Nanohybrid Membranes (NHMs) can achieve 100% decolorization, but cannot eliminate salts and dyes, although the removal efficiency is notable for some salts, especially divalent salts. Hydrophilicity, antifouling properties, flux, pressure, costs, usage frequency, and mechanical, chemical, and thermal stabilities of NHMs should be considered.

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Techno-economical aspects of electrocoagulation optimization in three acid azo dyes’ removal comparison

Cited by 21 publications

References 42 publications

Supercritical carbon dioxide extraction of oils from Andean lupin beans: Lab‐scale performance, process scale‐up, and economic evaluation

Supercritical carbon dioxide extraction of oils from Andean lupin beans: Lab‐scale performance, process scale‐up, and economic evaluation

Mechanism and Techno‐Economic Analysis of the Electrochemical Process

Advances in Nanohybrid Membranes for Dye Reduction: A Comprehensive Review

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