Comparative study of flocculation and adsorption behaviour of water treatment proteins from Moringa peregrina and Moringa oleifera seeds

Abstract

Trees of Moringa oleifera are the most widely exploited species of Moringa and proteins extracted from its seeds have been identified as the most efficient natural coagulant for water purification. Largely for climatic reasons, other Moringa species are more accessible in some regions and this paper presents a comparative study of the adsorption to different materials of the proteins extracted from seeds of Moringa peregrina and Moringa oleifera to explore their use as flocculating agents in regions where each is more readily accessible. Results showed that Moringa peregrina seed proteins had higher adsorption to alumina compared to silica, in contrast to opposite behavior for Moringa oleifera. Both species provide cationic proteins that can act as effective coagulants for the various impurities with different surface potential. Despite the considerable similarity of the amino acid composition, the seed proteins have significantly different adsorption and this presents the opportunity to improve processes by choosing the optimal species or combination of species depending on the type of impurity or possible development of separation processes.

Chemical proximate composition, antinutritional factors content, and antioxidant capacity of anatomical seed fractions of Moringa oleifera

“…On the other hand, the population in developing countries consumes the whole seeds without any recommendation or prescription by health promoters. In the current study, moringa seeds cultivated in Sinaloa, México, show different dimensions (length and width) compared to other authors who found values from 2 cm to 2.5 cm for height and 0.4 cm-0.7 cm for width (Leone at al., 2016;Nouhi, Kwaambwa, Gutfreund & Rennie, 2019). Average weight and 1000-seed weight were similar to previous results reported by Olson & Fahey (2011), while hectoliter weight (18.10 kg/hL) is published for the first time, as far as it is known.…”

Comportamento E Hábitos Das Corujas Buraqueiras Athene Cunicularia: Compilação Das Produções Bibliográficas

“…Ao contrário da aplicação de sulfato de alumínio, mais custoso e conhecido por deixar resíduos na água tratada, sendo associado com o desenvolvimento de doenças neurodegenerativas como a doença de Alzheimer (YEGAMBARAM et al, 2015), as sementes de Moringa oleifera são biomateriais de baixo custo e biodegradáveis os quais demonstraram possuir propriedades como floculantes naturais de baixo impacto ambiental. Sendo, muito possivelmente, o melhor coagulante natural atualmente disponível (NOUHI et al, 2019).…”

Wood anatomy and tree-ring stable isotopes indicate a recent decline in water-use efficiency in the desert tree Moringa peregrina

“…The species is a drought-tolerant C 3 plant, multi-stemmed desert tree with high medicinal and ecological value. The seeds of M. peregrina can be used to purify water because they contain a protein that coagulates dispersed particles (Moulin et al 2019;Nouhi et al 2019). The seeds are also a source of a high-quality oil, which is used both locally and by the cosmetics industry.…”