Use of Moringa oleifera seed as a natural coagulant in domestic wastewater tertiary treatment: Physicochemical, cytotoxicity and bacterial load evaluation

Andrade, Priscila Vega; Palanca, Carolina Ferreira; Oliveira, Maria Alcionéia Carvalho de; Koga-Ito, Cristiane Yumi; Reis, Adriano Gonçalves dos

doi:10.1016/j.jwpe.2020.101859

Cited by 47 publications

(47 citation statements)

References 55 publications

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“…As seen in Table 2, it can be observed that Moringa Oleifera seeds extract does not significant impact on pH value after the treatment [15]. On the other hand, added alum led to higher pH decreases than Moringa Oleifera seeds extract due to the H + proton release when the doses increase [2]. Moreover, it can be observed that the treatment with Moringa Oleifera seeds extracts 97.5% of turbidity when applied with alum and MOSE, respectively.…”

Section: Ph and Conductivity Variationmentioning

confidence: 85%

“…decrease the conductivity while the treatment with alum increase in the conductivity value [2], [30].…”

Section: Coagulation-flocculation and Sedimentation Processmentioning

confidence: 93%

“…Seeds Five gram of the powder was added to 100 ml of doubled distilled water and mixed for 30 minutes using a stirrer [27], until a uniform solution and the extract was then passed through a muslin cloth [28]. This solution is recommended to be freshly prepared when used in water treatment to avoid coagulant activity decrease [2], [29]. In order to avoid the viscosity and pH changes is recommended its store in a cool place with a maximum temperature of 20˚C [26].…”

Section: Extract Preparation Of Moringa Oleiferamentioning

confidence: 99%

“…In the recent years, Moringa Oleifera has been used as a coagulant to treat water [16]. it has strong natural coagulate and is able to remove suspension impurities from treated water by destabilizing negative colloids, aggregation followed by precipitation, and obtaining clear water [17], [2]. Depending on the initial turbidity, cationic proteins were found to reduce by 50-99.5% of water turbidity [18], comparable to commercial alum in the removal of turbidity [19].…”

Section: Coagulation-flocculation and Sedimentation Processmentioning

confidence: 99%

“…Among many factors, human population growth and lifestyles emerging changes influence the quality and generated quantity of municipal wastewater [1]. Worldwide, especially in middle and low-income countries, a large portion of collected domestic wastewater isn't adequately treated before its release into water bodies [2], which lead to a negative effect on the quality of drinking water and a significant public health threat [3]. In developing countries, many communities, resort to using water from streams and rivers due to the lack in the supply system of potable water, which them exposes to the risk of waterborne diseases [4].…”

Section: Introductionmentioning

confidence: 99%

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Comparative study of the coagulation efficacy of Moringa Oleifera seeds extracts to alum for domestic wastewater treatment of Ain Aouda City, Morocco

et al. 2021

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This research aimed to investigate the performance of seeds extract of Moringa Oleifera (MO) as an eco-friendly coagulant and an alternative practice in enhancing primary domestic wastewater effluent treatment by coagulation/flocculation, and sedimentation. The seeds of Moringa Oleifera were dried, crushed, and sieved, the content of oil was extracted with n-hexane as a solvent employing soxhlet apparatus (electro thermal) then used the residue as domestic wastewater coagulant. Jar tests were conducted for improve the primary treatment of domestic wastewater effluent from the wastewater plant of Ain Aouda city, Rabat, Morocco. For this reason, perform of coagulation tests was comparative with using aluminium sulphate (alum). Moringa Oleifera seeds extract at the optimal dose of 250 mg/L shows encouraging results, by comparison with the use of alum (150 mg/L). In reality, in terms of TSS reduction 95.5% and 96.8%, while turbidity reduction 97.5% and 98.1% were obtained for MO seeds extract and alum, respectively. But, the reduction rate of COD and BOD of Alum was somewhat higher than that of MO seeds extract 81.8% and 76.8% for COD, while were 75.5% and 72% for BOD respectively. Differently from alum, observed that increase in the extract of MO seeds dosage happened a slight change in pH value, decrease conductivity, and three times less bulky quantity of sludge than alum. For avoiding the numerous disadvantages associated with the use of chemical coagulants, the usage of Moringa Oleifera seeds extracts is recommended.

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Section: Ph and Conductivity Variationmentioning

confidence: 85%

“…decrease the conductivity while the treatment with alum increase in the conductivity value [2], [30].…”

Section: Coagulation-flocculation and Sedimentation Processmentioning

confidence: 93%

Section: Extract Preparation Of Moringa Oleiferamentioning

confidence: 99%

Section: Coagulation-flocculation and Sedimentation Processmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Comparative study of the coagulation efficacy of Moringa Oleifera seeds extracts to alum for domestic wastewater treatment of Ain Aouda City, Morocco

et al. 2021

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Municipal Wastewater Treatment Using Moringa oleifera Seed and Press Cake Powder: A Comparative Analysis

Thanki

Padhiyar

Singh

et al. 2022

CLEAN Soil Air Water

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Moringa oleifera (MO), also known as drumstick tree, has gained worldwide attention among researchers and policy makers, for showing its remarkable potential in environmental management. Recently, MO seed or press cake (a by‐product of oil extraction industry) powder has also emerged as an alternative and promising coagulant for environmental remediation. In this view, attempts have been made in this study to evaluate the efficacy of MO seed and press cake powder (MSP & PCP) for the treatment of municipal wastewater. Both MSP and PCP are characterized by using swelling ratio, scanning and transmission electron microscopy analysis. The effect of various operational parameters such as coagulation–flocculation pH (2–10), coagulant dosage (0.1–1 g L−1), and sedimentation time (0–180 min), etc., is investigated to understand the potential of MSP and PCP. At optimized operational conditions, sedimentation kinetics is also performed suggesting that the treatment process is being governed by the second‐order kinetic model. The chemical and biological oxygen demand removals at optimized conditions are observed as follows: ≈38 and ≈73% for MSP and ≈47 and ≈85% for PCP. Overall, the results of the present study elucidated that PCP can be employed as a promising alternative of MSP for municipal wastewater with improved treatment efficiencies.

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The Potential of Elephantorrhiza goetzei Seed Extract as a Coagulant for Household Drinking Water Treatment

Diver,

Nhapi,

Ruziwa

et al. 2024

Environmental Quality Mgmt

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Poor access to adequate, clean, and safe water is one of the greatest world problems people encounter. There has been considerable attention in recent times toward the use of natural coagulants for water treatment. This study seeks to promote this by investigating the potential of Elephantorrhiza goetzei (E. goetzei) seed extract as natural coagulants for water treatment. This included the determination of key ingredients responsible for the coagulation process and optimal dosages for the removal of turbidity, fluoride, manganese, and iron. The residual content of organic matter in the treated water and the quality of sludge produced were also investigated. The methodology consisted of a proximate analysis procedure to investigate the active ingredient(s) responsible for coagulation and standard jar tests. Standard methods were used for the analyses. Coagulant dosages ranging from 0 to 300 mg/L at a rapid mixing speed of 120 rpm for 1 min, a slow mixing speed of 30 rpm for 15 min, and a settling time of 15 min were used for the jar test. The analysis of variance (ANOVA) using IBM SPSS Version 20 was conducted, and regression models were developed to determine the effect of coagulant dosage on turbidity, pH, total dissolved solids, fluoride, iron, manganese, chemical oxygen demand (COD), nitrogen, and phosphorus. The results obtained from the proximate analysis of E. goetzei seed extract show that values of 5.25%, 21.40%, 8.23%, 32.99%, 2.20%, and 29.93% were obtained for moisture, crude protein, crude fiber, fat, ash, and carbohydrate content, respectively. Moreover, seed extract of E. goetzei achieved removal efficiencies up to 94.8%, 50.1%, 90.0%, and 53.9% for turbidity, fluoride, iron, and manganese in water, respectively. The coagulant has the potential to achieve the desired World Health Organization (WHO) drinking water standards for turbidity, fluoride, iron, and manganese. The COD increased from 55.3 to 419.3 mg/L as the coagulant dosage increased from 0 to 100 mg/L. This could cause an unwanted rise in microbial activities, affecting the microbiological quality of the treated water. The total nitrogen and phosphorus concentrations obtained in the sludge at 100 mg/L were 0.343 and 0.194 µg/kg, respectively, and this compromises its attractiveness for agricultural reuse purposes.

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Use of Moringa oleifera seed as a natural coagulant in domestic wastewater tertiary treatment: Physicochemical, cytotoxicity and bacterial load evaluation

Cited by 47 publications

References 55 publications

Comparative study of the coagulation efficacy of Moringa Oleifera seeds extracts to alum for domestic wastewater treatment of Ain Aouda City, Morocco

Comparative study of the coagulation efficacy of Moringa Oleifera seeds extracts to alum for domestic wastewater treatment of Ain Aouda City, Morocco

Municipal Wastewater Treatment Using Moringa oleifera Seed and Press Cake Powder: A Comparative Analysis

The Potential of Elephantorrhiza goetzei Seed Extract as a Coagulant for Household Drinking Water Treatment

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