Improving the sludge conditioning potential of moringa seed

Abstract

/ In the search for a cheaper material to effectively condition sludge, oil-free moringa seed was prepared and tested. A Soxhlet apparatus was used to extract the oil from moringa seed (Moringa oteifera). The oil-free seed (marc) has been found to have higher conditioning potential than the ordinary moringa seed. However, the traditional ferric chloride is still a better sludge conditioner than moringa seed marc. For the digested domestic sludge used, optimum conditioning dosages were found to be 0.6, 0.80, and 1.10% of the total solids for ferric chloride, marc of the moringa seed, and ordinary moringa seed, respectively. Since little or no operational material is lost in the extraction process, the moringa seed marc is a promising conditioner in place of the ordinary seed.

Potential ofM. oleiferafor the Treatment of Water and Wastewater

“…The conditioning potential of oil-free seed of M. oleifera was found to be more than ordinary M. oleifera seed. 196 Ghebrimichael and Hultman 120 compared M. oleifera, alum, and synthetic polyelectrolytes for conditioning the sludge from the drinking water treatment plant, and it was reported that MOCP showed sludge conditioning capabilities similar to those of alum. M. oleifera and alum formed relatively stronger flocs than other polyelectrolytes.…”

“…oleifera was found to be more than ordinary M. oleifera seed . Ghebrimichael and Hultman compared M.…”

Coagulation and disinfection in water treatment using Moringa

“…oleifera is also used in water purification to prevent cholera and dysentery (Marobhe, 2008). Furthermore, its many uses include the following: alley cropping (biomass production), animal forage (leaves and treated seed-cake), biogas (from leaves), domestic cleaning agent (crushed leaves), blue dye (wood), fencing (living trees), fertiliser (seed-cake), foliar nutrient (juice expressed from the leaves), green manure (from leaves), gum (from tree trunks), honey-and sugar cane juiceclarifier (powdered seeds), honey (flower nectar), medicine (all plant parts), ornamental plantings, biopesticide (soil incorporation of leaves to prevent seedling damping off), pulp (wood), rope (bark), tannin for tanning hides (bark and gum), antioxidant (leaves), sludge conditioning (seeds) and water purification (powdered seeds) as discussed previously (Ademiluyi, 1988;Ademiluyi and Eze, 1990;Anwar et al, 2007;Iqbal and Bhanger, 2006;Marobhe, 2008;Rashid et al, 2008).…”

A comparison of the sludge conditioning capabilities of Canavalia ensiformis and Brachystegen eurycoma

“…Research findings on Canavalia ensiformis and Brachystegen eurycoma are compared in their use as a conditioner in sewage treatment. Initial chemical conditioning affects the sludge dewaterability number (SDN) and specific resistance (r) in a similar manner (Ademiluyi and Eze 1990). Thus, the lower the SDN and specific resistance, the more filterable the sludge.…”