Evaluation of Magnetic Coagulant (α-Fe2O3-MO) and its Reuse in Textile Wastewater Treatment

Santos, Tássia Rhuna Tonial dos; Mateus, Gustavo Affonso Pisano; Silva, Marcela Fernandes; Miyashiro, Carolina Sayury; Nishi, Letícia; Andrade, Murilo Barbosa de; Fagundes‐Klen, Márcia Regina; Gomes, R. G.; Bergamasco, Rosângela

doi:10.1007/s11270-018-3747-8

Cited by 50 publications

(15 citation statements)

References 63 publications

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“…There were some researchers that combined iron oxide nanoparticles and natural coagulant to improve the coagulation performance, especially in terms of settling time [4][5][6][7][8][9][10]. There are two approaches that have been used, firstly the protein as active coagulating agent was used to functionalize the surface of iron oxide nanoparticles, secondly, the iron oxide nanoparticles were dispersed in crude extract of natural coagulant.…”

Section: Introductionmentioning

confidence: 99%

“…Different types of iron oxide nanoparticles, α-Fe 2 O 3 , γ-Fe 2 O 3 , and Fe 3 O 4 , have been studied by Santos group to remove turbidity and color from synthetic wastewater [5][6][7][8][9]. In those researches, iron oxide nanoparticles were dispersed in crude extract of M. oleifera, where it was found that significant removal of turbidity and color was achieved within short settling time (less than 30 min) under magnetic settling.…”

Section: Introductionmentioning

confidence: 99%

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Adsorbed leucaena protein on citrate modified Fe3O4 nanoparticles: synthesis, characterization, and its application as magnetic coagulant

Kristianto

Reynaldi

Prasetyo

et al. 2020

Sustain Environ Res

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Natural coagulants from plants resources have gained a lot of attention as it is renewable, biodegradable, non-hazardous, lower cost, and less sludge generated compared to chemical coagulants. However there are still some drawbacks, namely long settling time and possible increase of dissolved organic carbon in the treated water. In this paper we tried to address these drawbacks by utilizing citrate modified Fe3O4 to adsorb protein from Leucaena leucocephala as the active coagulating agent. The effect of trisodium citrate concentration and protein adsorption pH to the adsorbed protein was investigated. It was found that the trisodium citrate concentration of 0.5 M and pH 4.0 gave the highest protein adsorption. The obtained magnetic coagulant was furthermore characterized using Scanning Electron Microscopy, X-ray Diffraction, Fourier Transform Infrared Spectroscopy, and Transmission Electron Microscopy to observe the characteristics before and after protein adsorption. Furthermore, the effect of pH (2 to 10) and coagulant dosage (60 to 600 mg L− 1) to the removal of synthetic Congo red wastewater and sludge volume formation was investigated. It was found that pH 3 was the best pH for coagulation due to charge neutralization mechanism of leucaena protein. Furthermore the highest removal was obtained at dosage 420 mg L− 1 with 80% removal. This result was comparable with crude extract of leucaena with half settling time (20 min) and lower increase of permanganate value, indicating lower increase of dissolved organics in the treated water.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Adsorbed leucaena protein on citrate modified Fe3O4 nanoparticles: synthesis, characterization, and its application as magnetic coagulant

Kristianto

Reynaldi

Prasetyo

et al. 2020

Sustain Environ Res

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“…Most of the coagulation studies using natural coagulants were conducted on synthetic textile waste (Kristianto et al, 2018;Suresh et al, 2019;Obiora-Okafo & Onukwuli, 2017;Onukwuli, Obiora-Okafo, & Omotioma, 2019;Dalvand et al, 2016) or surface water (Adesina, Abdulkareem, Yusuff, Lala, & Okewale, 2019), yet little attention was given to real waste samples. Until recently, the new trends in the field were directed towards investigating the performance of these natural coagulants on real waste samples for the purpose of finding better alternatives for industrial applications (Dotto et al, 2019;Rambe, 2018;Dos Santos, 2018). Although, some of these studies gave reasonably good results when applied to synthetic waste, but the removal efficiency was comparatively low when applied to real samples (Saritha et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Multi-response optimization of the coagulation process of real textile wastewater using a natural coagulant

Redha

2020

Arab Journal of Basic and Applied Sciences

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The present study is an attempt to investigate the applicability of a natural coagulant Moringa Oleifera (MO) as a potential impending alternative for the treatment of textile wastewater. Face Central Composite Design in Response Surface Methodology was used to optimize the performance of the coagulation process in terms of turbidity and colour removal efficiency. Three independent variables which are pH (2-4), coagulant dosage (4-8 ml) and settling time (10-30 min) were investigated. Quadratic models were developed for each response and their statistical fitness was evaluated using ANOVA analysis. All models were proved to be statistically adequate with R 2 higher than 96%. Of the investigated variables, pH was found to have significant effect on both responses (P-value <0.001), whereas, coagulant dosage affected the colour removal efficiency significantly. Multi-response optimization was applied to optimize the process variables for both responses simultaneously using the RSM desirability function approach. Maximum turbidity reduction by more than 81% and colour removal efficiencies by more than 77% were reached at the optimum conditions of pH 2, coagulant dosage 4 mL and settling time 21 min. These results prove that MO could be used as an alternative to the conventional coagulants for real textile wastewater treatment.

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“…However, there are few studies on removal of pollutants in water by using metal-air batteries devices in the field of water treatment. At present, most of the water treatment methods are still by adding chemical agents [6][7][8] (such as adding flocculants, coagulants and oxidants, etc.) additional energy [9][10] or biodegradation of microorganisms to achieve the purpose of removing pollutants [11][12].…”

Section: Introductionmentioning

confidence: 99%

Review of the application of metal-air battery principlein water treatment

et al. 2019

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The reaction principle of metal air battery is expounded, and the application of this method in the field of water treatment as an emerging technology is introduced. The recent research results of domestic and foreign researchers using metal-air battery technology to treat pollutants in water (such as removing arsenic, reducing COD and collecting algae in water) are introduced, and the actual treatment effects of these methods are briefly described. The feasibility of applying metal-air battery technology to water treatment is analyzed. At the same time, the problems of water treatment using metal-air battery are pointed out. The broad application prospects of this technology are analyzed and prospected.

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Evaluation of Magnetic Coagulant (α-Fe2O3-MO) and its Reuse in Textile Wastewater Treatment

Cited by 50 publications

References 63 publications

Adsorbed leucaena protein on citrate modified Fe3O4 nanoparticles: synthesis, characterization, and its application as magnetic coagulant

Adsorbed leucaena protein on citrate modified Fe3O4 nanoparticles: synthesis, characterization, and its application as magnetic coagulant

Multi-response optimization of the coagulation process of real textile wastewater using a natural coagulant

Review of the application of metal-air battery principlein water treatment

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