The treatment of waste waters with peat moss

Coupal, Bernard; Lalancette, J. M.

doi:10.1016/0043-1354(76)90038-5

Cited by 156 publications

(68 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Peat is a cheap product which is available in many areas, and which has the ability to adsorb heavy metals. Metal adsorption from municipal, industrial and mine deposits onto peat have been investigated previously [1][2][3][4][5][6]. Lidkea [3] reports an adsorption capacity of 48 mg g À1 for fibric (mainly Sphagnum) peat.…”

Section: Introductionmentioning

confidence: 99%

“…Parameters influencing metal adsorption from wastewater are metal concentration in the solution, ionic strength, pH, and complex-forming substances. Mechanisms other than adsorption, such as precipitation and mechanical entrapment, are involved in treating complex wastewaters [1,2]. Previously it was found that Sphagnum peat adsorbed a higher amount of Cu compared to Carex peat at pH 4.7 [8].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Poorly humified peat as an adsorbent for metals in wastewater

2002

View full text Add to dashboard Cite

Metal adsorption and surface charge determinations were performed previously on well-characterised Sphagnum and Carex peat samples. The aim of this investigation was to determine metal adsorption from complex wastewaters onto these peat samples and compare it to the adsorption onto peat granules, clinoptilolite, glauconite and a flue dust from steel production. A sulphide mine leachate, a landfill leachate and a laundry wastewater were chosen, giving a variation in pH, ionic strength, total organic carbon and concentrations of metals. Metal adsorption was determined in batch and column experiments. The wastewater composition was of great importance for metal removal efficiency, mainly due to the difference in dominating metal species. In the sulphide mine leachate, containing free metal ions, a high metal adsorption was observed onto both peat and inorganic adsorbents. In the landfill leachate the metals formed carbonate and organic complexes and a low metal removal was achieved. Contrary to the leachates, the laundry wastewater contained suspended particles. The high amount of metals removed, 80% of the Cu and 30-60% of the Zn concentration, was probably withdrawn bound to the particle fraction. The highest removal of metal ions was obtained in the sulphide mine leachate with Carex peat, removing 97-99% of the Zn and 85-100% of the Cu content. The Sphagnum peat sample removed 37-77% of the Zn and 80-100% of the Cu content. The differences found between Sphagnum and Carex peat were attributed to the original chemistry of the plant material and the habitat conditions at the time of peat formation. Generally, the combination of glauconite or clinoptilolite with the peat samples in column experiments gave a minor improvement in metal removal. r

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Poorly humified peat as an adsorbent for metals in wastewater

2002

View full text Add to dashboard Cite

show abstract

“…Peat is a rather complex material containing lignin which bears polar functional groups such as alcohols, aldehydes, ketones, acids, phenolic hydroxides, and ethers that can be involved in chemical bonding. Because of the very polar character of this material, the specific adsorption for dissolved solids such as transition metals and polar organic molecules is reported to be quite high (Coupal and Lalancette 1976). It has been reported that peat is very effective in the removal of textile dyes (Poots et al 1975;Stephen et al 1988); Pesticides (Brown et al 1979, Williams andCrawford 1983;Cloutier et al 1984); heavy metals (Coupal and Lalancette 1976;Smith et al 1977;Chancy and Hundemann 1979); oily compounds (Mathavan and Vivaraghavan 1989); and radioactive materials (Belanger et al 1987).…”

Section: Micro Pollutantsmentioning

confidence: 99%

Appropriate technology for domestic wastewater management in under-resourced regions of the world

Oladoja

2016

Appl Water Sci

View full text Add to dashboard Cite

Centralized wastewater management system is the modern day waste management practice, but the high cost and stringent requirements for the construction and operation have made it less attractive in the under-resourced regions of the world. Considering these challenges, the use of decentralized wastewater management system, on-site treatment system, as an appropriate technology for domestic wastewater treatment is hereby advocated. Adopting this technology helps save money, protects home owners' investment, promotes better watershed management, offers an appropriate solution for low-density communities, provides suitable alternatives for varying site conditions and furnishes effective solutions for ecologically sensitive areas. In the light of this, an overview of the on-site treatment scheme, at the laboratory scale, pilot study stage, and field trials was conducted to highlight the operational principles' strength and shortcomings of the scheme. The operational requirements for the establishing and operation of the scheme and best management practice to enhance the performance and sustenance were proffered.

show abstract

“…(1998 WATANABE et KISHI (1991), CH0 etal. (1999) COUPAL et LALANCETTE (1976, COUILLARD (1994), H0etMCKAY(1999 LARSEN et SCHIERUP (1981) KUMAR et DARA (1980bDARA ( , 1982 DRONNETefa/. (1997) AL-ASHEH et DUVNJAK (1996) BOSlNCOefa/.…”

Section: Tableaumentioning

confidence: 99%

Revue sur l'enlèvement des métaux des effluents par adsorption sur la sciure et les écorces de bois

Fiset¹,

Blais²,

Cheikh³

et al. 2005

rseau

View full text Add to dashboard Cite

Les résidus de transformation du bois tels les écorces et la sciure de bois ont été largement étudiés depuis quelques années pour leur propriété d'adsorption et d'enlèvement des métaux toxiques contenus dans les effluents contaminés. En ce qui concerne la sciure de bois, les recherches répertoriées ont porté principalement sur l'utilisation du sapin rouge, du manga, du tilleul, de l'épinette, du pin, du cèdre, du teck, de l'akamatsu et du buna. Pour ce qui est des écorces de bois, plusieurs espèces ont été étudiées, notamment les écorces de pin, de chêne et d'épinette. La présente revue fait le point sur les performances de ces différents adsorbants peu coûteux pour l'adsorption des principaux métaux contaminants (Cd, Cr, Cu, Hg, Ni, Pb et Zn). Les points discutés portent sur les méthodes de préparation (lavage, séchage et tamisage) et de traitement chimique de l'adsorbant (traitement acide ou basique, traitement à la formaldéhyde, phosphatation, carboxylation, sulfoéthylation, carboxyméthylation, etc.), les conditions opératoires utilisées lors de l'adsorption, les modèles thermodynamiques, cinétiques et autres applicables au couple adsorbant-adsorbat, l'effet des principaux paramètres opératoires (temps de contact, pH de traitement, température, concentration d'adsorbant, taille des particules, etc.), les principes et les mécanismes impliqués dans l'élimination des contaminants métalliques par les adsorbants présentés.Wood industry by-products such as barks and sawdusts have been widely studied in recent years for their property of metal adsorption and metal removal from contaminated effluents. Concerning the utilization of sawdusts, many researchers have studied metal adsorption on material from species such as red fir, mango, lime, pine, cedar, teak, Japanese red pine and Japanese beech. As regards wood barks, several species were studied, in particular pine, oak and spruce. The present review gives a progress report on the efficiency of these various inexpensive materials for the adsorption of different metals (Cd, Cr, Cu, Hg, Ni, Pb and Zn). The points discussed relate to the preparation methods (washing, drying, screening) and the chemical treatments of the adsorbents (acid or base treatment, formaldehyde treatment, phosphatation, carboxylation, sulfoethylation, carboxymethylation, etc.). We also consider the operating conditions used during adsorption, the thermodynamic, kinetic and other models applicable to the adsorbent-adsorbate couple, the effect of the operational parameters (time of contact, pH, temperature, adsorbent concentration, particle size, etc.), as well as the principles and mechanisms involved in metal removal by the adsorbents.The accumulation of organic or inorganic matter at the solid-liquid interface is the basis of almost all surface reactions. Adsorption is often a process described in terms of isotherms, which represent the relationship between the concentration of a solute in solution and the quantity adsorbed at the surface at constant temperature. The isotherms are often used to...

show abstract

The treatment of waste waters with peat moss

Cited by 156 publications

References 1 publication

Poorly humified peat as an adsorbent for metals in wastewater

Poorly humified peat as an adsorbent for metals in wastewater

Appropriate technology for domestic wastewater management in under-resourced regions of the world

Revue sur l'enlèvement des métaux des effluents par adsorption sur la sciure et les écorces de bois

Contact Info

Product

Resources

About