Environmental quality of primary paper sludge

Boni, Maria Rosaria; D'Aprile, L; Casa, G. De

doi:10.1016/j.jhazmat.2003.11.017

Cited by 39 publications

(22 citation statements)

References 3 publications

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“…Despite of the significant progress that has been made during recent years in reducing related environmental impacts [1], the need for effluent treatment processes make these industries one of the leading generators of inorganic and organic semisolid and solid wastes [2][3][4]. Although the favored management option for disposal of primary and secondary (or even tertiary) wastewater treatment sludge has been incineration in solid fuel boilers or evaporation in recovery boilers, the low total solid and high ash contents of these residuals still prompt reliance on alternative disposal options.…”

Section: Introductionmentioning

confidence: 99%

Pretreatment of recycled paper sludge with a novel high-velocity pilot cyclone: Effect of process parameters on convective drying efficiency

et al. 2014

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Section: Introductionmentioning

confidence: 99%

Pretreatment of recycled paper sludge with a novel high-velocity pilot cyclone: Effect of process parameters on convective drying efficiency

et al. 2014

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“…It has been proposed to convert this residue into an environmentally benign material by incorporating into a ceramic body [5,8,11,19]. Use of this residue for other purposes like a pH-controlling substance [15], synthesis of calcium aluminosilicates with multifunctional sorption ability [16], pozzolanic addition in cement manufacturing [17], glass ceramics [18], light-weight, porous and high strength composite materials consisting of the mullite, cordierite and cristobalite phases [19] and as an organic pore-forming agent in bricks [8] is also reported.…”

Section: Introductionmentioning

confidence: 99%

The use of recycled paper processing residues in making porous brick with reduced thermal conductivity

Sütçü

Akkurt

2009

Ceramics International

340

100

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“…The hydraulic conductivity value of sludge depends e.g. on the water content of the sludge as well as on the overburden, and permeability values of between 4.2610 À 6 and 5.8610 À 10 m s À 1 have been reported for paper mill sludge (Kraus et al, 1997;Boni et al, 2004). These values exceed or are close to the hydraulic conductivity value of between 1.0610 À 7 m s À 1 and 1.0610 À 9 m s À 1 for geological barriers in landfill base and sides at landfills for hazardous waste, non-hazardous waste and inert waste in the European Union.…”

Section: Introductionmentioning

confidence: 99%

Chemical and leaching properties of paper mill sludge

Kuokkanen

Nurmesniemi

Pöykiö

et al. 2008

Chemical Speciation & Bioavailability

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Paper mills produce large amounts of paper mill sludge in the treatment of process water. According to overburden studies, the hydraulic conductivity of the paper mill sludge originating from a paper mill in Northern Finland at a pressure of 30 kPa was 4.4610 À 10 m s À 1 , and 1.7610 À 10 m s À 1 at a pressure of 100 kPa. These values well meet the generally required values of between 1.0610 À 7 m s À 1 and 1.0610 À 9 m s À 1 for a geological barrier in landfill base and sides at landfills in the European Union. Paper mill sludge can also be used in the artificially constructed geological barrier layer of landfill cover structures. The angle of internal friction of the paper mill sludge was 34.8 and the cohesion of interparticle adhesion 23 kPa, which are important measures for assessing the shear strength of paper mill sludge and thus the stability of the landfill layer in which it is used. During a 28-day period, the biodegradability of the paper mill sludge in soil was ca 0.4% and in ground water under 1%, whereas according to the OECD 301F standard concentrations (BOD 28 ), it was ca 8%. For the determination of total element concentrations in the paper mill sludge, the dried sample was digested using USEPA method 3052. A five-stage sequential leaching procedure was also used to fractionate trace elements in the paper mill sludge between the water-soluble (H 2 O), exchangeable (CH 3 COOH), easily reduced (HONH 3 Cl), oxidizable (H 2 O 2 þ CH 3 COONH 4 ), and (5) the residual (HF þ HNO 3 þ HCl) fractions. This paper covers also examples of case studies how paper mill sludge is utilized in Finland.

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Environmental quality of primary paper sludge

Cited by 39 publications

References 3 publications

Pretreatment of recycled paper sludge with a novel high-velocity pilot cyclone: Effect of process parameters on convective drying efficiency

Pretreatment of recycled paper sludge with a novel high-velocity pilot cyclone: Effect of process parameters on convective drying efficiency

The use of recycled paper processing residues in making porous brick with reduced thermal conductivity

Chemical and leaching properties of paper mill sludge

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