Effects of Moringa oleifera Lam. and Azadirachta indica A. Juss. leaf extract in treatment of tannery effluent

Abstract

The effect of leaf extracts of Moringa oleifera and Azadirachta indica using ethanol as solvent on tannery waste water treatment was investigated for a period of five days and their phytochemical constituents were analyzed. All the extracts were found to be efficient in the clarification and sedimentation of total solids in the tannery waste water sample. On the 5 th day, sample treated with 10 ml of extract showed higher reduction of electrical conductivity, pH, chloride, sulfate along with dissolved oxygen. The significant reduction of these pollution indicating parameters of the tannery effluent indicated its high applicability to treat the tannery wastes along with other waste water treatment in near future. This is the first report of decontamination of tannery waste water by Azadirachta indica leaf extract.

Antimicrobial effect of Moringa oleifera seed powder against Vibrio cholerae isolated from the rearing water of shrimp ( Penaeus vannamei ) postlarvae

“…Previous studies have also suggested that the use of M. oleifera can alter the values of water physicochemical parameters (Sinha et al . 2016); therefore, its use may influence the optimal values (pH = 8·14–8·31, temperature = 26–32°C, DO ˃ 5 mg l −1 ) for shrimp farming (Han et al . 2018).…”

“…2017), whereas other studies coincide with our findings, which have reported a significant decrease in pH levels in water treated with M. oleifera (Sinha et al . 2016). Although pH values from this study remained within the expected range for shrimp, its monitoring is important because M. oleifera seed has been used as a food supplement in shrimp, showing increased growth and survival (Akbary et al .…”

Study on the ameliorating effect of aqueous extract of Moringa oleifera on Ganga water

“…The present study support their conclusion as it exhibit that aqueous extract of Moringa oleifera showed promising results in only one out of three samples with an optimum concentration of 0.3%. According to Ali et al 2010and Sinha et al (2016) as a polyelectrolyte it may therefore be suggested that M. oleifera decreased hardness in water through adsorption and interparticle bridging. Effect of extract of M. oleifera on total dissolved solids: Total dissolved solids (TDS) are a measure of the combined content of all inorganic (chiefly calcium, magnesium, potassium, sodium, bicarbonates) and organic substances that are dissolved in a liquid in a molecular, ionized or micro-granular suspended form.…”

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“…Rapid industrialization, urbanization, and other developmental activities pollute rivers, which are important in the nation's development and sustenance of life 1,2 . While nowadays, environmental pollution and its impact on health present and future generations are of main concern.…”

“…The river water is being polluted by untreated domestic waste way into the rivers through sewage, outfalls drain, etc. 5 and increase the water pollution in rivers 2 .…”