Selective Removal of Lipophilic Wood Extractives from Paper Mill Water Circulations by Ozonation

Лаари, Арто; Korhonen, S.; Kallas, Juha; Tuhkanen, Tuula

doi:10.1080/01919510009408801

Cited by 11 publications

(4 citation statements)

References 13 publications

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“…In addition, the ozone oxidation of resin acids has also been addressed relatively effective Laari et al 2000;Ledakowicz et al 2006;Roy-Arcand and Archibald 1996); whereas starch oxidation products showed lower degradation rates than lignin derivatives ones, probably due to the absence of carboncarbon double bonds (Amat et al 2005b;Langlais et al 1991) (Figure 1). Furthermore, why p-toluenesulfonic acid showed a slower degradation rate than other lignin derivatives was explained by the strong deactivating effect of its sulfonic group (Amat et al 2004).…”

Section: Ozone Oxidation Processesmentioning

confidence: 99%

The application of advanced oxidation technologies to the treatment of effluents from the pulp and paper industry: a review

Hermosilla

Merayo

Gascó

et al. 2014

Environ Sci Pollut Res

159

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Paper industry is adopting zero liquid effluent technologies to reduce fresh water use and meet environmental regulations, which implies water circuits closure and the progressive accumulation of pollutants that must be removed before water re-use and final wastewater discharge. The traditional water treatment technologies that are used in paper mills (such as dissolve air flotation or biological treatment) are not able to remove recalcitrant contaminants. Therefore, advanced water treatment technologies, such as advanced oxidation processes (AOPs), are being included in industrial wastewater treatment chains aiming to either improve water biodegradability or its final quality. A deep review of the current state of the art regarding the use of AOPs for the treatment of the organic load of effluents from the paper industry is herein addressed considering mature and emerging treatments for a sustainable water use in this sector. Wastewater composition, which is highly dependent of the raw materials being used in the mills, the selected AOP itself, and its combination with other technologies, will determine the viability of the treatment. In general, all AOPs have been reported to achieve good organics removal efficiencies (COD removal >40%; and about an extra 20% if AOPs are combined with biological stages). Particularly, ozonation has been the most extensively reported and successfully implemented AOP at an industrial scale for effluent treatment or reuse within pulp and paper mills; although Fenton processes (photo-Fenton particularly) have actually addressed better oxidative results (COD removal ≈65-75%) at lab scale, but still need further development at large scale.

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Section: Ozone Oxidation Processesmentioning

confidence: 99%

The application of advanced oxidation technologies to the treatment of effluents from the pulp and paper industry: a review

Hermosilla

Merayo

Gascó

et al. 2014

Environ Sci Pollut Res

159

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show abstract

“…Also, when water circulations are closed these compounds are accumulated in the process waters leading to problems in process operation and in product quality. Ozonation was used to remove the LWEs in circulation waters from paper mills and TMP production and it was found that the high ozone dose of about 100-300 mg/dm 3 was needed for removal of 50% extractives [17]. The reason is the high concentration of organic matter in the waters leading to excessive usage of ozone despite the high selectivity of the reaction.…”

Section: Ozonation Of Pollutants Commonly Found In Pulp Mill Effluentmentioning

confidence: 99%

Study on Environmental Materials with Application of Ozone-Based Technologies in Removal of Characteristic Pollutants in Pulp and Paper Effluents

2013

AMR

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Due to the presence of recalcitrant organic compounds, the pulp and paper effluents after treatment by conventional biological processes still contain high concentration of chemical oxygen demand (COD) and colored substances and do not satisfy the national emission standard. The objectives of this work are to present the research process on environmental materials with application of ozone-based technologies in removal of characteristic pollutants in pulp and paper effluents and suggest the feasible development trend. In this work, basic mechanisms of degradation of organic pollutants by ozone-based technologies in the presence of environmental materials as catalyst are described. The removal efficiencies of characteristic pollutants commonly found in pulp and paper effluents, such as absorbable organic halogens (AOX), resin and fatty acids, phenolic compounds, lipophilic wood extractives and ethylenediaminetetraacetic acid (EDTA), are presented.

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“…Decomposition of toxic contaminants was carried out firstly by ozonation to reduce the toxicity of initial organic matter. This fact was justified because ozone promoted the formation of less toxic simple organic mixtures [ 14 , 32 , 33 , 34 ]. However, in the mentioned publications, only different model compounds (analytical degree) or actual wastewater were looked at, with no detection of contaminants before and following treatment.…”

Section: Introductionmentioning

confidence: 99%

Sequential Treatment by Ozonation and Biodegradation of Pulp and Paper Industry Wastewater to Eliminate Organic Contaminants

Amacosta,

Poznyak,

Siles

et al. 2024

Toxics

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In this research, the decomposition of toxic organics from pulp and paper mill effluent by the sequential application of ozonation and biodegradation was studied. Ozonation, as a pre-treatment, was executed to transform the initial pollutants into less toxic compounds (such as organic acids of low molecular weights). Biodegradation was executed during three days with acclimated microorganisms that were able to complete the decomposition of the initial organic mixture (raw wastewater) and to achieve a higher degree of mineralization (85–90%). Experiments were performed under three different conditions: (a) only ozonation of the initial contaminants, (b) only biodegradation of residual water without previous treatment by ozone and (c) ozonation followed by biodegradation performed by acclimated microorganisms. In the case of 72 h of biodegradation, the mineralization efficiency reached 85% and 89% after 30 and 60 min of ozonation, respectively. The no significant difference in this parameter coincided with the calculated generalized microorganisms’ consortia specific growing rate μmax that was reduced from 2.08 × 10−3 h−1 to 6.05 × 10−4 h−1 when the ozonation time was longer. The identification of the organics composition by gas chromatography with mass detector (GC-MS) before and after treatments confirmed that the proposed combined process served as a more efficient alternative to secondary and tertiary treatments (mineralization degree between 60 and 80% in average) of the paper industry wastewater.

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Selective Removal of Lipophilic Wood Extractives from Paper Mill Water Circulations by Ozonation

Cited by 11 publications

References 13 publications

The application of advanced oxidation technologies to the treatment of effluents from the pulp and paper industry: a review

The application of advanced oxidation technologies to the treatment of effluents from the pulp and paper industry: a review

Study on Environmental Materials with Application of Ozone-Based Technologies in Removal of Characteristic Pollutants in Pulp and Paper Effluents

Sequential Treatment by Ozonation and Biodegradation of Pulp and Paper Industry Wastewater to Eliminate Organic Contaminants

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