Evaluation of the <i>Opuntia dillenii</i> as Natural Coagulant in Water Clarification: Case of Treatment of Highly Turbid Surface Water

Abstract

This study was performed in laboratory scale and consisted of the using of aqueous Opuntia dillenii solution for the clarification of very turbid surface water (Turbidities varying between 186 NTU and 418 NTU). This plant from Cactaceae family was used as a natural coagulant for the different clarification tests. The preliminary phytochemical Screening of the powder of this plant showed that it contains tanins, saponins and mucilages. Flocculation and coagulation tests showed that Opuntia dillenii can be used in highly turbid water treatment. The removal efficiency varied from 89% to 93% for the turbidity and suspended solids, and from 4% to 15% for the obvious color in water when we used the optimum values of this natural coagulant (1 mL to 10 mL). The successive addition of this natural coagulant and the lime, gave a better elimination of turbidity and suspended solids, and a good reduction for the color. The removal efficiency of the turbidity and suspended solids became more than 95% and the one of the color between 67% and 94%.

Improvement of electrocoagulation–electroflotation treatment of effluent by addition of Opuntia ficus indica pad juice

“…Its coagulation ability increases at alkaline pH [10,37]. Torres [15] observed that Opuntia ficus indica mucilage is efficient in removing COD at pH 10.…”

Protective Effect of Opuntia dillenii Haw Fruit against Lead Acetate-Induced Hepatotoxicity: In Vitro and In Vivo Studies

“…OD's protective effect and the other plants of Opuntia species have been investigated against heavy metal-induced toxicity in previous studies [20,21]. Moreover, OD has shown the potential bioabsorption and removal capacity against heavy metals intoxication [24][25][26]. Previous studies also have indicated OD as a plant with desirable pharmacologic properties including anti-inflammatory and immunomodulatory [27,28], antioxidant [29], neuroprotective [30], antidiabetic [31], analgesic [28], antitumor [32], hypotensive [33], antimicrobial [34], and hepatoprotective effects [34].…”

Desempenho de coagulantes naturais, adsorvente alternativo e filtros lentos domiciliares no tratamento de águas com <i>Microcystis aeruginosa</i> e microcistina: alternativas tecnológicas para comunidades isoladas

“…A literatura a respeito do uso de coagulantes alternativos no tratamento de água contendo cianobactérias e/ou cianotoxinas é bem reduzida. FUENTES et al, 2012;MILLER et al, 2008;NOUGBODÉ et al, 2013;SHILPA et al, 2012). Miller et al (2008) (MILLER et al, 2008) Ainda sobre o estudo de Miller et al (2008), o mecanismo envolvido na coagulação com Opuntia spp.…”

“…As condições utilizadas pelos autores foram 335 rpm por 1 min para mistura rápida e 35 rpm por 45 min para mistura lenta (não foi determinado o tempo de sedimentação). Entre estudos que avaliaram a eficiência de cactáceas como coagulantes e utilizaram parâmetros de mistura próximos aos ótimos encontrados no presente trabalho estãoFedala et al (2015) eNougbodé et al (2013) Fedala et al (2015). alcançaram residual de turbidez entre 0,5 e 1,2 NTU a partir da água de um reservatório com turbidez inicial de 4,5 NTU.…”

“…O autores utilizaram uma mucilagem extraída de Opuntia fiscuindica, o melhor resultado foi obtido com uma dosagem de 0,2 mg L -1 . A mistura rápida foi realizada à 200 rpm durante 1 min, a mintura lenta à 45 rpm por 30 minutos e o tempo de sedimentação foi de 1 hora Nougbodé et al (2013). observaram remoção de turbidez entre…”