Toivakainen, S., Hannukainen, H. & Dahl, O., Precipitation of lignin from alkaline ECF bleaching filtrate with ferrous sulphate in alkaline conditions. IPBC 2017 – International Pulp Bleaching Conference, Aug. 28 -30, 2017. Porto Seguro, BA, Brazil.

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Hannukainen, H. & Toivakainen, S. Predictive analytics for pulp and paper industry wastewater treatment. PulPaper 2018 – Conference Book, 29-31 May 2018, Helsinki, Finland.

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Toivakainen, S. & Hannukainen, H., Utilization of data-driven soft sensors in pulp industry wastewater treatment, The 11th Biennial Johan Gullichsen Colloquium, 8 November 2017, Helsinki, Finland.

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Toivakainen, S., Hannukainen, H., Dahl, O. Utilization of calcium enriched solid waste streams to remove COD and color from kraft pulp mill bleaching filtrates. O Papel, MAY 2017, vol. 78, num. 5, pp. 86 – 89.

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Hannukainen, H., Toivakainen, S., Metsäteollisuuden jätevedenkäsittelyn tehostaminen (Improving pulp and paper industry wastewater treatment), Vesitalous 6/2016, p. 9-11.

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Toivakainen, S., Hannukainen, H. & Dahl, O., Utilization of calcium enriched solid waste streams to remove COD and colour from kraft pulp mill bleaching filtrates, ABTCP 2016 – 49th Pulp and Paper International Congress & Exhibition, October 25 – 27, 2016, São Paulo, Brazil

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Toivakainen, S., Hannukainen, H., Dahl, O., Biodegradability of high and low molecular weight organic material in pulp and paper mill effluents, Iberoamerican Congress on Pulp and Paper Research, Ciadicyp, September 4 – 8, 2016, Espoo, Finland.

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Toivakainen, S., Kopra, R., Tirri, P., Dahl, O., Utilizing refractometer for controlling COD removal in Kraft pulp mill wastewater treatment plant, Appita Fibre Value Chain Conference 15 – 17 October 2014, Rotorua, New Zealand.

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Toivakainen, S., Hannukainen, H., Laukkanen, T., Dahl O., The accumulation of non- or slowly biodegradable organic compounds in an activated sludge process within a kraft pulp mill, TAPPI PEERS Conference, September 14 – 17.2014, Tacoma, Washington.

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Kopra, R., Toivakainen, S., Tolonen, P., Tirri, T. Dahl, O. Monitoring of activated sludge plant streams using online refractometers and conductivity analysers. O Papel, 2013. Vol. 74, nro 9, p.61-65.

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Kopra, R., Toivakainen, S., Tolonen, P., Tirri, T., Laukkanen, T. & Dahl, O., Studies on wastewater treatment plant performance measurements, ABTCP 2013 – 46th Pulp and Paper International Congress & Exhibition, October 8 – 10, 2013, São Paulo, Brazil

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Toivakainen, S., Laukkanen, T., Dahl, O., Simultaneous precipitation of phosphorus in a kraft pulp mill wastewater treatment plant. Water Science & Technology, Vol. 67, No. 2, p. 299–305, 2013.

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Toivakainen, S., Jokinen, H. & Dahl, O., 2012. Sustainable olive oil production. Symposium on ”Olive Oil Mill Wastes and Environmental Production” 16 – 18 October 2012, Chania Greece.

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Toivakainen, S., Laukkanen, T., Dahl, O., Dynamics in the aeration basin of the activated sludge process within ECF kraft pulp mills. 10th IWA Symposium on Forest Industry Wastewaters. Concepción, Chile. January 8 – 11, 2012. International Water Association.

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Laukkanen, T., Toivakainen, S., Hussain, S., Dahl, O., Managing effluent phosphorus by optimizing the activated sludge process in the ECF kraft pulp mill. 10th IWA Symposium on Forest Industry Wastewaters. Concepción, Chile. January 8 – 11, 2012. International Water Association. (Sakari Toivakainen awarded with BEST PRESENTATION AWARD).

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Toivakainen, S., Laukkanen, T. Dahl, O., Soveltuuko rinnakkaissaostus selluteollisuuden jätevesille? (Is simultaneous precipitation suitable for the pulp industry’s wastewater?), Vesitalous 2/2011, p. 17.

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Toivakainen, S., Laukkanen, T., Jokinen, H., Dahl, O., Chlorate Reduction in Kraft Pulp Mill Wastewater Treatment Processes. Appita journal, 2011 JUN-JUL, Vol.64(3), p. 262-266.

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Toivakainen, S., Laukkanen, T., Systematic approach to enhance conventional activated sludge plant at the pulp mill. 9th IWA Symposium on Forest Industry Wastewaters. Fredericton, New Brunswick, Canada. June 14-17, 2009. International Water Association.

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