Enhancing treatability of tannery wastewater by integrated process of electrocoagulation and fungal via using RSM in an economic perspective

Deveci, Ece Ümmü; Akarsu, Ceyhun; Gönen, Çağdaş; Özay, Yasin

doi:10.1016/j.procbio.2019.06.016

Cited by 67 publications

(25 citation statements)

References 57 publications

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“…Thus, RSM overcomes situations requiring a large number of experiments minimizing additional chemicals, time, and expensive analysis, promoting a reduction of extra costs (Biswas et al 2019;Şahan 2019). RSM advantages guaranteed its application in several works regarding the removal of contaminants from water to process parameter optimization, such as adsorption (Kaynar et al 2018;Biswas et al 2019;Deng and Chen 2019;Hasan and Setiabudi 2019;Kaur et al 2019;Şahan 2019;Sharifpour et al 2019;Wakkel et al 2019), electrocoagulation (Barsç and Turkay 2016;Murdani et al 2018;Rabahi et al 2018;Deveci et al 2019;Karamati-Niaragh et al 2019), Fenton reaction (Saeed et al 2015;Xie et al 2016;Liu et al 2018), electrochemical oxidation (Garg and Prasad 2015;Domínguez et al 2016;Darvishmotevalli et al 2019;Duarte et al 2019), and photocatalytic degradation (Mirzaei et al 2018;Galedari et al 2019;Karimi et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Caffeine removal using Elaeis guineensis activated carbon: adsorption and RSM studies

Melo

Ide

Duarte

et al. 2020

Environ Sci Pollut Res

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The palm (Elaeis guineensis), known as dendê, is an important oleaginous Brazilian plant with a high performance of oil production. In this work, a 2 3 full experimental design was performed and the response surface method (RSM) was used to indicate the optimum parameter of caffeine adsorption on Elaeis guineensis endocarp activated carbon, since the endocarp is the main by-product from dendê oil production. It was set the adsorbent point of zero charge (pH pzc), and the material was characterized by Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), and scanning electron microscopy (SEM). The RSM results indicate removal efficiency (%) at the optimal conditions, 0.20 g of adsorbent, and caffeine initial concentration of 20 mg/L, and acidic medium was about 95%. Based on ANOVA and F test (F calculated > F standard), the mathematical/statistical model obtained fits well to the experimental data. The overall kinetic studies showed time was achieved after 5 h and caffeine adsorption followed the pseudo-second-order model suggesting chemisorption is a predominant mechanism. Redlich-Peterson and Sips models best represented the experimental data (0.967 < R 2 < 0.993). Thermodynamic revealed that caffeine adsorption was spontaneous at all temperatures studied, exothermic, and probably with changes in the adsorbate-adsorbent complex during the process. The tests conducted in different water matrixes corroborate the suitability of this adsorbent to be used in caffeine removal even in a complex solution.

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Section: Introductionmentioning

confidence: 99%

Caffeine removal using Elaeis guineensis activated carbon: adsorption and RSM studies

Melo

Ide

Duarte

et al. 2020

Environ Sci Pollut Res

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“…[ 24 ] The process depends on the dissolution of the sacrificial anodes to release the active coagulant precursors into the solution while electrolysis takes place on the cathode, where flotation plays a major role in pollutant removal. Reactions at the anode/cathode surface in an EC/EF process can be summarized as follows: [ 25 ]…”

Section: Introductionmentioning

confidence: 99%

Electrocoagulation/Electroflotation Process for Removal of Organics and Microplastics in Laundry Wastewater

Akarsu

Deniz

2020

CLEAN Soil Air Water

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In the present research, laundry wastewater treatment is studied using the electrocoagulation/electroflotation process. For the optimization of treatment conditions such as electrode type (Al–Al, Al–Fe, Fe–Fe, and Fe–Al), initial pH (5–9), current (0.54–2.16 A), and application time (15–60 min), response surface methodology is used. Removal efficiencies of chemical oxygen demand (COD), color, anionic surfactant, microplastic, and phosphate are studied. It is determined that the most effective removal is obtained with 2.16 A current, pH 9, and 60 min reaction time using Fe–Al electrode. Here, 91%, 94%, 100%, and 98% removal efficiencies are achieved for COD, surfactant, color, and microplastic, respectively. The operating cost of the combined process is calculated as $1.32 m−3 for the optimum removal parameters. The adsorption kinetics study shows that the removal follows second‐order kinetics. The laboratory‐scale test results indicate that the electrocoagulation/electroflotation process is feasible for the treatment of laundry wastewater.

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“…Cleaner production when applied to leather production aims to reduce the demand for materials, energy and the toxicological emissions generated. Deveci et al (2019) improved the tannery wastewater treatment system and presented economic and environmental advantages, since the system is more economical and efficient compared to conventional treatment, which results in a reduction of highly polluting waste.…”

Section: Introductionmentioning

confidence: 99%

“…Approximately 65 to 70% of the total weight in processed salted leather becomes waste (MURALIDHARAN et al, 2020;SATHISH;RAO, 2019) and ap-proximately 90% of leather production uses chromium salt (DING et al, 2020), which makes it even more concerning, as the tannery industry that uses a simple treatment does not remove the chromium from wastewater and the high organic content (DEVECI et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Composições formadas por polipropileno reciclado e resíduos de couro wet-blue: uma prática sustentável

Rizzato

Berto

Corso³

et al. 2020

Rev. Bras. Ciênc. Ambient. (Online)

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Diversas áreas buscam o desenvolvimento de materiais alternativos com asmais variadas finalidades visando a uma contribuição positiva para o meioambiente por meio do aproveitamento de resíduos sólidos. Entre essessólidos contaminantes, destaca-se o produzido em estações de tratamentosde efluentes industriais, como o de curtumes, onde o processamento do couroproduz um impacto ambiental negativo, pois os produtos químicos utilizadosno tratamento da matéria-prima, entre eles os sais de cromo, possuem altograu de toxicidade. Esses resíduos quando produzidos podem ser utilizadosna fabricação de compósitos promovendo a redução do impacto ambiental.Diante disso, o presente trabalho teve por objetivo a fabricação de materiaiscompósitos. Os compósitos poliméricos foram fabricados fazendo uso dosprocessos de extrusão e injeção simultaneamente, em que o “pó de couro”foi incorporado em uma matriz de polipropileno reciclado nas proporçõesde 10 e 20%, respectivamente. Também foi fabricado um corpo de provade referência utilizando apenas polipropileno reciclado. Após a confecção,os corpos de prova foram analisados com relação à ensaios mecânicos de providresistênciaà tração (ASTM D638/2014) e ao impacto Izod (ASTM D256/201). As fraturas obtidas nas amostras peloensaio de impacto foram analisadas por microscopia eletrônica de varredura. A adição do “pó de couro” em 10 e 20% promoveu o aumento da resistência ao impacto de 9,7 e 24,59%, respectivamente, quando comparados com o corpo de prova referência. Os compósitos fabricados apresentaram um aumento de 2,10 e 7,65%, em relação à inserção de “pó de couro” 10 e 20%, respectivamente. Por meio da morfologia, foi possível verificar uma homogeneidade na distribuição do material incorporado, contribuindo para o aumento da resistência dos materiais. Os compósitos obtidos mostraram-se eficazes em relação ao aumento da resistência mecânica, podendo ser uma solução para o descarte adequado de resíduos, promovendo uma contribuição favorável ao meio ambiente.

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Enhancing treatability of tannery wastewater by integrated process of electrocoagulation and fungal via using RSM in an economic perspective

Cited by 67 publications

References 57 publications

Caffeine removal using Elaeis guineensis activated carbon: adsorption and RSM studies

Caffeine removal using Elaeis guineensis activated carbon: adsorption and RSM studies

Electrocoagulation/Electroflotation Process for Removal of Organics and Microplastics in Laundry Wastewater

Composições formadas por polipropileno reciclado e resíduos de couro wet-blue: uma prática sustentável

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