Treatment of cosmetic industry wastewater by flotation with Moringa oleifera Lam. and aluminum sulfate and toxicity assessment of the treated wastewater

• Published in: Environmental science and pollution research international Vol. 29; no. 1; pp. 1199 - 1209
• Main Authors: Araújo, Nathalia Santos, Souza, Nathália Ferreira, de Lima-Faria, João Marcos, Paz, Andressa Tuane Santana, Scalize, Paulo Sérgio, de Sabóia-Morais, Simone Maria Teixeira, Junior, Humberto Carlos Ruggeri, da Conceição, Edemilson Cardoso
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01-01-2022; Springer Nature B.V
• Subjects: Alum Compounds; Aluminum; Aluminum sulfate; Aquatic Pollution; Atmospheric Protection/Air Quality Control/Air Pollution; Chemical oxygen demand; Coagulants; Cosmetics; Earth and Environmental Science; Ecotoxicology; Effluent treatment; Environment; Environmental Chemistry; Environmental Health; Environmental science; Flotation; Grease; Greases; Hygiene; Moringa oleifera; Mutagenicity; Personal hygiene; Plant Extracts; Research Article; Seeds; Sodium chloride; Sulfates; Toxicity; Turbidity; Waste Water - chemistry; Waste Water - toxicity; Waste Water Technology; Wastewater treatment; Water Management; Water Pollution Control; Water Purification; Natural product; Cytotoxicity; Wastewater treatment; Dissolved air flotation; Chemical coagulation; Poecilia reticulata
• ISSN: 0944-1344; 1614-7499
• DOI: 10.1007/s11356-021-15722-4

The production of personal hygiene and body products generates wastewater with a high load of surfactants, a high chemical oxygen demand (COD), and abundant oils and greases. Aluminum sulfate (AS) and two solutions of natural coagulant from
Moringa oleifera
Lam
.
seeds prepared with a 1M NaCl solution and 1.5M NaCl solution were used. Aluminum sulfate,
Moringa oleifera
Lam
.
in 1M NaCl, and
Moringa oleifera
Lam
.
in 1.5M NaCl solutions reduced turbidity at rates 94.48%, 98.07%, and 97.87%; reduced COD at rates 46.36%, 49.15%, and 42.7%; and reduced oil and grease at rates 98.72%, 78.65%, and 97.41%, respectively. Mutagenicity tests with guppies showed a lower toxicity of
Moringa oleifera
Lam
.
extract compared with aluminum sulfate. This work shows that
Moringa oleifera
Lam
.
extract has high potential for use as an alternative to aluminum sulfate; therefore, this study will contribute to proposals for the sustainable treatment of effluents from the cosmetic industry.