Moringa oleifera extract as green coagulant for POME Treatment: Preliminary studies and sludge evaluation

Noor, Mohamed Hizam Mohamed; Lee, Wei Jien; Azli, Muhamad Faiz Zaim Mohd; Ngadi, Norzita; Mohamed, Mohini

doi:10.1016/j.matpr.2021.02.241

Cited by 10 publications

(2 citation statements)

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“…An aqueous extraction was also undertaken for comparison purposes (MOPW). Preweight MOP was blended with 100 mL of distilled water (DW) [27], and both solutions were freshly prepared for each set of experiments to prevent degradation or alteration of the biocoagulant properties (Figure 1). extract was 7.4 times less than that of the aqueous extract.…”

Section: Chemicals and Materialsmentioning

confidence: 99%

“…An aqueous extraction was also undertaken for comparison purpo (MOPW). Preweight MOP was blended with 100 mL of distilled water (DW) [27], both solutions were freshly prepared for each set of experiments to prevent degradat or alteration of the biocoagulant properties (Figure 1). Hydrochloric acid (HCl), sodium hydroxide (NaOH), sodium chloride (NaCl), aluminum sulfate octadecahydrate (AI (SO 4 ) 3 18H 2 O), molecular weight: 342.15 g/mol (anhydrous basis) g/mol, purity: 98% were all from Sigma Aldrich Chemical Company, Burling-ton, Massachusetts, USA, MB11 (Table 1) was purchased from Biochem-Chemopharma, Cosne-Cours-sur-Loire, France.…”

Section: Chemicals and Materialsmentioning

confidence: 99%

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Parametrical Study for the Effective Removal of Mordant Black 11 from Synthetic Solutions: Moringa oleifera Seeds’ Extracts Versus Alum

Hadadi

Imessaoudene

Bollinger

et al. 2022

Water

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Prior studies have examined the ability of Moringa oleifera (MO) seed extract, among other natural coagulants, to remove several types of dyes. MO has been proven to have a high capacity to remove some anionic dyes. The aim of the present study is to explore the possible use of aqueous and saline extracts of MO as biocoagulants for the removal of Mordant Black (MB11) from aqueous solution. Their performances were compared to that of aluminum sulfate (alum). To do so, various operating parameters were investigated such as coagulant dose (100–600 mg/L), pH (3–11), initial dye concentration (100–350 mg/L), sodium chloride concentration (0.2–2 M), and sedimentation time (15–90 min). The maximum percentages of MB11 removal were found to be 98.65%, 80.12%, and 95.02% for alum, aqueous extract of MO (MOPW), and saline extract of MO (MOPS), respectively, at around pH 6.5 and for coagulant doses of 400 mg/L (alum) and 500 mg/L (MOPW and MOPS). The coagulation-flocculation mechanism of biocoagulants was hypothesized to be adsorption and charge neutralization. The two biocoagulants (MOPW and MOPS) showed an interesting versatility towards pH counter to alum which was very sensitive to this parameter. pH variations were measured for the three coagulants and proven to be negligible for the biocoagulants. Faster sedimentation time was recorded when MOPW and MOPS were used, suggesting the existence of larger quickly settleable flocs. Considering their high coagulative capacity, rapid and cost-effective preparation, and eco-friendly character, MO extracts can be considered as powerful alternatives to aluminum sulfate in the remediation of MB11 from wastewaters.

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Section: Chemicals and Materialsmentioning

confidence: 99%

Section: Chemicals and Materialsmentioning

confidence: 99%