Optimization of active coagulant agent extraction method from Moringa Oleifera seeds for municipal wastewater treatment

Bouchareb, Raouf; Derbal, Kerroum; Benalia, Abderrezzaq

doi:10.2166/wst.2021.234

Cited by 36 publications

(23 citation statements)

References 23 publications

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“…Thus, the highest f locculation ef f iciency obtained with sodium chloride extract among the three solvents tested. This result is in agreement with the work of Bouchareb et al (2021) who used 1M sodium chloride solution to extract active coagulating agent f rom M. oleifera seeds f or use in municipal wastewater treatment and reported 97% turbidity removal with 140 g/L of 1 M NaCl extract against 88% obtained with 170 mg/L of aqueous extract. Okuda et al (1999) also reported that 1M sodium chloride solution was more ef f icient than distilled water in extracting active coagulant f rom M. oleifera seeds f or use in synthetic wastewater treatment.…”

Section: Effects Of Extracting Solvent On Flocculation Efficiency Of ...supporting

confidence: 92%

“…Moringa oleifera seed oil has several applications including usage as biodiesel f eedstock. It is theref ore good to extract the oil bef ore coagulant extraction to reduce the bulk of the coagulant Bouchareb et al (2021). Furthermore, the oil content may interf ere with the activity of the coagulating agent in M.oleifera This result also agrees with that of Skaf et al…”

Section: Comparison Of the Flocculation Efficiency Of Extract Of Defa...supporting

confidence: 86%

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Moringa oleifera seed extract-mediated flocculation as an efficient method for harvesting Chlorella lewinii biomass

Ikele¹,

Ogbonna²

2022

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The aim of this research was to investigate the potentials of harvesting Chlorella lewinii through flocculation by Moringa oleifera seed extract. Water, ethanol, and sodium chloride solution were used to extract flocculating agents from both whole and de-fatted Moringa oleifera seeds and their ability to flocculate C. lewinii cells were evaluated. The effects of extracting solvents, extract concentration, incubation period and culture age on flocculation efficiency were investigated. The lipid contents of the biomass harvested by flocculation using M. oleifera seed extract were compared with those harvested by centrifugation. The results showed that 1M sodium chloride solution was the most effective solvent for extracting M. oleifera active ingredient. The optimum extract concentration was 600±0.10 mg/L with approximately 60±0.46 % efficiency, while the optimum length of period for incubating a mixture of cell culture and seed extract was 80±0.26 min. Defatted Moringa oleifera seed extract was more efficient than whole seed extract with an efficiency of 50%. The percentage lipid content of biomass harvested by centrifuge and moringa extracts decreased in the following order: Centrifugation-(22.55%) > de-fatted seed extract (16.63%) > whole seed extract (14.42%). These results indicate that M. oleifera seed extract is a reliable method of harvesting microalgae biomass.

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Section: Effects Of Extracting Solvent On Flocculation Efficiency Of ...supporting

confidence: 92%

Section: Comparison Of the Flocculation Efficiency Of Extract Of Defa...supporting

confidence: 86%

Moringa oleifera seed extract-mediated flocculation as an efficient method for harvesting Chlorella lewinii biomass

Ikele¹,

Ogbonna²

2022

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“…The peaks between 15 and 40 degrees could be representative of various substances such as lipids, proteins, carbohydrates, and ash [48,49].…”

Section: Xrd Analysismentioning

confidence: 99%

“…This result can be related to the organic nature of the bio-coagulant[12]. As mentioned in the literature, the activity of natural coagulants is due to the long chains of proteins contained in their molecules, which are responsible for pollutant aggregation and floc formation[48]. On the contrary, metal-based coagulants hydrolyze in water and release H + ions, resulting in a pH decrease.…”

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confidence: 96%

Use of Aloe vera as an Organic Coagulant for Improving Drinking Water Quality

Benalia

Derbal

Khalfaoui

et al. 2021

Water

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The coagulation–flocculation–sedimentation process is widely used for removal of suspended solids and water turbidity reduction. The most common coagulants used to conduct this process are aluminum sulfate and ferric sulfate. In this paper, the use of Aloe vera as a natural-based coagulant for drinking water treatment was tested. The bio-coagulant was used in two different forms: powder as well as liquid; the latter was extracted with distilled water used as a solvent. The obtained results showed that the use of the natural coagulant (Aloe vera) in both powder (AV-Powder) and liquid (AV-H2O) forms reduced the water turbidity at natural pH by 28.23% and 87.84%, respectively. Moreover, it was found that the use of the two previous forms of bio-coagulant for drinking water treatment had no significant influence on the following three parameters: pH, alkalinity, and hardness. The study of the effect of pH on the process performance using Aloe vera as a bio-coagulant demonstrated that the maximum turbidity removal efficiency accounted for 53.53% and 88.23% using AV-Powder and AV-H2O, respectively, at optimal pH 6.

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“…The turbidity removal efficiency is significantly influenced by the active components from natural coagulants. Therefore, these active substances are responsible for coagulation, for instance: proteins [23,28]; polyphenols [29], polysaccharide [30], starches [31,32] and cellulose [33].…”

Section: Introductionmentioning

confidence: 99%

The Use of as Natural Coagulant in Algerian Drinking Water Treatment Plant

Benalia¹,

Derbal²,

Khalfaoui³

et al. 2022

Journal of Renewable Materials

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The purpose of this work is the study the ability of the plant material Aloe vera to act as natural coagulant using raw water obtained from a drinking water treatment plant (Mila, Algeria). Different solvents such as: NaCl; NaOH and HCl were used as chemical activators to extract the active components from the Aloe vera plant, and different coagulation-flocculation experiments were conducted in a jar test apparatus to evaluate the performance of the extracted coagulant. Also, the effect of coagulant dose on some water parameters such as turbidity, pH, total alkalinity and organic matter were investigated. The results showed that the use of coagulants obtained by using different solvents increases the coagulation efficiency compared to the coagulant obtained from the raw material, for example the maximum turbidity removal efficiency was 28.23, 78.07, 83.46 and 85.15% when using powdered Aloe vera (raw material), AV-NaCl (0.5 M), AV-NaOH (0.05 M) and AV-HCl (0.05 M), respectively. The results defined, that the residual turbidity obtained in this work, where the Aloe vera was used (after treatment by solvents) produced a turbidity lower than the Algerian standard (5 NTU) with initial turbidity (13 NTU). In this study, the infrared spectrum study and analysis has revealed the presence of different functional groups, which are responsible for the coagulation process.

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Optimization of active coagulant agent extraction method from Moringa Oleifera seeds for municipal wastewater treatment

Cited by 36 publications

References 23 publications

Moringa oleifera seed extract-mediated flocculation as an efficient method for harvesting Chlorella lewinii biomass

Moringa oleifera seed extract-mediated flocculation as an efficient method for harvesting Chlorella lewinii biomass

Use of Aloe vera as an Organic Coagulant for Improving Drinking Water Quality

The Use of as Natural Coagulant in Algerian Drinking Water Treatment Plant

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