Wastewater treatment polymers identified as the toxic
Wastewater treatment polymers identified as the toxic component of a diamond mine effluent. The processing plant's effluent contains kimberlite ore particles (< or =0.5 mm), wastewater, and two wastewater treatment polymers, a cationic polydiallydimethylammonium chloride (DADMAC) polymer and an anionic sodium acrylate polyacrylamide (PAM
Wastewater treatment polymers identified as the toxic component of a diamond mine effluent. De Rosemond SJ, Liber K. Environ Toxicol Chem, 23(9):2234-2242, 01 Sep 2004 Cited by 5 articles | PMID: 15379002
Wastewater treatment polymers identified as the toxic
Wastewater treatment polymers identified as the toxic component of a diamond mine effluent. De Rosemond SJ(1), Liber K. Author information: (1)Toxicology Centre, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5B3, Canada.
Wastewater treatment polymers identified as the toxic component of a diamond mine effluent Article in Environmental Toxicology and Chemistry 23(9):2234-42 · October 2004 with 77 Reads
Implication of polymer toxicity in a municipal wastewater
Simone J. C. de Rosemond, Karsten Liber, Wastewater treatment polymers identified as the toxic component of a diamond mine effluent, Environmental Toxicology and Chemistry, 10.1897/03-609, 23, 9, (2234-2242), (2009).
The widespread use of untreated wastewater – particularly in urban and peri-urban areas – to grow a considerable portion of India’s food supply, coupled with current inaction from officials, has converged to produce, say some scientists, a toxic time bomb in a nation that soon will overtake China to become the world’s largest.
Sublethal toxicity of two wastewater treatment polymers
Lake trout fry (Salvelinus namaycush) were exposed in laboratory experiments to two wastewater treatment polymers, one anionic (MagnaFloc ® 156) and one cationic (MagnaFloc ® 368; Ciba Speciality Chemical), to determine if these chemicals which are used and discharged by mining operations in Canada’s North pose a significant hazard to juvenile fishes.
Background: Water is a scarce resource and is considered a fundamental pillar of sustainable development. The modern development of society requires more and more drinking water. For this cleaner wastewater, treatments are key factors. Among those that exist, advanced oxidation processes are being researched as one of the sustainable solutions.
Aptitude of Oxidative Enzymes for Treatment of Wastewater
Natural water sources are very often contaminated by municipal wastewater discharges which contain either of xenobiotic pollutants and their sometimes more toxic degradation products, or both, which frustrates the universal millenium development goal of provision of the relatively scarce pristine freshwater to water-scarce and -stressed communities, in order to augment their socioeconomic well
High molecular weight (106–3 × 107 Da) polyacrylamide (PAM) is commonly used as a flocculant in water and wastewater treatment, as a soil conditioner, and as a viscosity modifier and friction
Organic Contaminant Biodegradation by Oxidoreductase
Organic contaminants (OCs), such as pharmaceuticals, personal care products, flame retardants, and plasticisers, are societally ubiquitous, environmentally hazardous, and structurally diverse chemical compounds whose recalcitrance to conventional wastewater treatment necessitates the development of more effective remedial alternatives. The engineered application of ligninolytic oxidoreductase
The emission of microplastics into nature poses a threat to aquatic and terrestrial ecosystems. Their penetration of the food chain presents a danger to human health as well. Wastewater treatment plants can be seen as the last barrier between microplastics and the environment. This review focuses on the impact of waste treatment plants in retaining microplastics.
- Which polyacrylamide variants require a lower flocculant dose?
- Polyacrylamide variants with low charge densities below 25 mol% and medium charge densities below 45 mol% required dramatically lower flocculant doses between 1.66 mg/L to 5 mg/L to achieve harvesting efficiencies surpassing 50%.
- What are polyacrylamide based flocculants?
- Polyacrylamide-based flocculants constitute the most important group of water-soluble polymers commercially applied in harvesting freshwater and marine microalgae from their suspensions. This is primarily due to the high reactivity, hydrophilic nature and relatively low costs associated with their monomer acrylamide .
- How much polyacrylamide flocculant do you need?
- In general, polyacrylamide flocculants with very low charge densities below 10 mol% required very high flocculant doses above 45 mg/L to effectively flocculate the marine algae cells.
- What is the maximum flocculation efficiencies of polyacrylamide?
- In general, the maximum flocculation efficiencies recorded for all polyacrylamide variants ranged from 94 to 100% for flocculant doses varying from 45 mg/L to 1.66 mg/L, respectively, for freshwater Chlorella vulgaris suspensions.
