Exploring the use of cactus Opuntia ficus indica in the biocoagulation–flocculation of Pb(II) ions from wastewaters

Nharingo, Tichaona; Zivurawa, M. T.; Guyo, Upenyu

doi:10.1007/s13762-015-0815-0

Cited by 62 publications

(31 citation statements)

References 22 publications

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“…A study reported by Aweng E.R. et al [13] proved that Cassia alata or also known as Senna alata as natural coagulant able to reduce river water turbidity up to 93.33%. Further testing on SA, shows that it has significant antimicrobial effect against Gram positive bacteria and fungi.…”

Section: Senna Alatamentioning

confidence: 99%

Senna Alata Extract Modified Pullulan as Bio Coagulant in Water Treatment

Vijayakumaran¹,

Tjprc²

2019

IJMPERD

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The production of drinking water from raw water sources involves coagulant use at a coagulation/flocculation stage, to remove turbidity in the form of suspended and colloidal material. Many coagulants and flocculants are widely used in conventional water treatment processes. Aluminum and ferric salts can be classified as inorganic coagulants while polyacryl amide derivatives and polyethylene imine falls in the category of synthetic organic polymers. Currently, the conventional water treatment processes use inorganic coagulants such as aluminum polychloride and aluminum sulfate for the coagulation/flocculation processes. However, studies show that the usage of the inorganic coagulant causes serious damage to the human health. In the current study, the effectiveness of Pullulan and extract of Senna Alata as bio coagulant for water treatment was explored as an alternative material for the conventional coagulant for water treatment. Senna alata leaves were extracted by using the water extraction method. The bio coagulant of Pullulan and Senna Alata extract s were prepared at different mixing ratios. The effectiveness of bio coagulant was determined through assessments on the treated water quality in terms of turbidity, pH, and dissolved oxygen. The effectiveness of the Pullulan and Senna Alata extract as bio coagulant for water treatment was shown to be more efficient compared to treatment using conventional chemicals.

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Section: Senna Alatamentioning

confidence: 99%

Senna Alata Extract Modified Pullulan as Bio Coagulant in Water Treatment

Vijayakumaran¹,

Tjprc²

2019

IJMPERD

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“…Other studies have reported that the application of natural coagulants can increase the concentration of orthophosphate, nitrogen compounds (nitrite and nitrate) and organic matter [27,32]. This is mainly due to the functional groups present in cacti, i.e., amide, amine and amino acids [30,35] and Opuntia mucilage, which show high concentrations of metals in their compositions [8].…”

Section: Physical-chemical Removal Profilementioning

confidence: 99%

“…The bio-coagulation mechanisms of cacti were reported as adsorption-charge neutralization and adsorptionbridging mainly due to the anionic and macromolecular nature of deprotonated polygalacturonic acid [25,30]. Considering all removal characteristics, studies have reported that cacti present removal rates similar to those obtained using chemical coagulants, with the advantage of generating biodegradable sludge [37].…”

Section: Physical-chemical Removal Profilementioning

confidence: 99%

Cladodes applied as decentralized ecotechnology to improve water quality and health in remote communities that lack sanitation

et al. 2020

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Access to treated water has increased in urban areas of the developing world in recent decades: However, many regions still lack proper sanitation or safe drinking water. Among the existing studies on low-cost water treatment methods to solve this problem, the application of cacti species is still a recent one. Considering this, the present study aimed to evaluate the best cactus species (Opuntia ficus-indica, Cereus jamacaru and Cereus jamacaru monstrosus) on the simultaneous removal of pathogens, improvement in physical-chemical conditions, without letting cytotoxic residues on water. Tests were carried out using river water and small pieces of cladodes at dosages of 15, 25, 50 and 75 (g L −1) in agitation periods of 2 min at 60 rpm and settling periods of 30, 120 and 360 min. O. ficus-indica performed better than C. jamacaru in removing E. coli, turbidity, color, iron and nitrate, and a dosage of 25 g L −1 of cactus was found to be the most efficient for water treatment. This dosage resulted in a maximum non-cytotoxic exposition time of 30 min for O. ficus-indica and of 120 min for C. jamacaru. Considering how efficient these cacti have shown to be in removing pollutants, and how widespread and easy to cultivate they are, they could be considered as a safe, low-cost alternative to other coagulation-flocculation products in water treatment processes.

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“…To combine the best properties of both types, it was suggested that synthetic PEs be grafted onto the backbone of natural polymers. A completely natural PE has been obtained from the cactus tree (Opuntia ficus-indica) [62,63]. Others have been reviewed [4].…”

Section: New Polyelectrolytesmentioning

confidence: 99%

The Use of Polymers in the Flotation Treatment of Wastewater

Bolto

Xie

2019

Processes

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The use of flotation for the treatment of wastewaters in general, but especially for the removal of oil, grease, general organic matter, and suspended solids, is well established as a low energy process. Polyelectrolytes (PEs) can enhance performance without adding to the solids load that occurs with inorganic additives such as alum. The bridging of pollutants and the attachment of the resulting aggregates to the air-water interface can be effectively carried out with most wastewaters. Hydrophobic modification of the PEs can be useful for difficult species. It should be applied to the flotation of polyfluoroalkyl substances, for example, as they are not amenable to economical conventional treatment. Similarly, the removal of microplastic particles from sewage effluents by flotation could be enhanced.

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Exploring the use of cactus Opuntia ficus indica in the biocoagulation–flocculation of Pb(II) ions from wastewaters

Cited by 62 publications

References 22 publications

Senna Alata Extract Modified Pullulan as Bio Coagulant in Water Treatment

Senna Alata Extract Modified Pullulan as Bio Coagulant in Water Treatment

Cladodes applied as decentralized ecotechnology to improve water quality and health in remote communities that lack sanitation

The Use of Polymers in the Flotation Treatment of Wastewater

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