Dahl, Olli

Fitamo, Temesgen Mathewos

Master, Emma

Meyer, Torsten

A biochemical methane potential assay was conducted to investigate the anaerobic digestibility of bleaching effluent from hardwood kraft pulping and the potential of codigestion with other effluents from an integrated pulp and paper mill. Four in-mill streams were tested individually and in combination: total bleaching effluent, alkaline bleaching effluent, kraft evaporator condensate, and chemithermomechanical pulping effluent. The total bleaching effluent, consisting of the chlorine dioxide bleaching and alkaline bleaching effluents, exhibited the highest potential for organic matter degradation and methane generation. Chemical oxygen demand (COD) removal ranged from 57%-76%, and methane generation was 220-280 mL/g COD contained in the wastewater, depending on the degree of dilution. When codigestion was tested, the composite consisting of total bleaching effluent, chemithermomechanical pulping effluent, and kraft condensate was most efficient in terms of COD removal (51%) and methane generation (200 mL/g COD contained in the wastewater). The total bleaching effluent is the largest contributor to the overall amount of wastewater at this mill; it contains relatively low concentrations of anaerobic inhibitors such as adsorbable organic halogens (36 mg/L), total sulfur (170 mg/L), and resin and fatty acids (3.2 mg/L). Therefore, the total bleaching effluent from hardwood kraft pulping may be considered for full-scale anaerobic wastewater treatment, either as a singular stream or as part of a composite stream including other in-mill effluents

Online Research Database In Technology

Biochemical methane potential of kraft bleaching effluent and codigestion with other in-millstreams - DTU Orbit (08/11/2017) Biochemical methane potential of kraft bleaching effluent and codigestion with other in-mill streamsA biochemical methane potential assay was conducted to investigate the anaerobic digestibility of bleaching effluent fromhardwood kraft pulping and the potential of codigestion with other effluents from an integrated pulp and paper mill. Four in-mill streams were tested individually and in combination: total bleaching effluent, alkaline bleaching effluent, kraftevaporator condensate, and chemithermomechanical pulping effluent. The total bleaching effluent, consisting of thechlorine dioxide bleaching and alkaline bleaching effluents, exhibited the highest potential for organic matter degradationand methane generation. Chemical oxygen demand (COD) removal ranged from 57%-76%, and methane generation was220-280 mL/g COD contained in the wastewater, depending on the degree of dilution. When codigestion was tested, thecomposite consisting of total bleaching effluent, chemithermomechanical pulping effluent, and kraft condensate was mostefficient in terms of COD removal (51%) and methane generation (200 mL/g COD contained in the wastewater). The totalbleaching effluent is the largest contributor to the overall amount of wastewater at this mill; it contains relatively lowconcentrations of anaerobic inhibitors such as adsorbable organic halogens (36 mg/L), total sulfur (170 mg/L), and resinand fatty acids (3.2 mg/L). Therefore, the total bleaching effluent from hardwood kraft pulping may be considered for full-scale anaerobic wastewater treatment, either as a singular stream or as part of a composite stream including other in-milleffluents. General informationState: PublishedOrganisations: Department of Environmental Engineering, Residual Resource EngineeringAuthors: Fitamo, T. M. (Intern), Dahl, O. (Ekstern), Master, E. (Ekstern), Meyer, T. (Ekstern)Number of pages: 9Pages: 80-88Publication date: 2016Main Research Area: Technical/natural sciences Publication informationJournal: Tappi JournalVolume: 15Issue number: 2ISSN (Print): 0734-1415Ratings: Web of Science (2017): Indexed Yes Scopus rating (2016): SJR 0.406 SNIP 0.494 Web of Science (2016): Indexed yes Scopus rating (2015): SJR 0.441 SNIP 0.741 Scopus rating (2014): SJR 0.44 SNIP 0.625 Scopus rating (2013): SJR 0.429 SNIP 0.722 Scopus rating (2012): SJR 0.326 SNIP 0.809 Scopus rating (2011): SJR 0.545 SNIP 1.05 Scopus rating (2010): SJR 0.737 SNIP 1.353 Scopus rating (2009): SJR 1.156 SNIP 0.755 Scopus rating (2008): SJR 0.838 SNIP 1.091 Scopus rating (2007): SJR 1.561 SNIP 1.188 Scopus rating (2006): SJR 1.205 SNIP 1.322 Scopus rating (2005): SJR 0.857 SNIP 0.97 Scopus rating (2004): SJR 1.185 SNIP 0.988 Scopus rating (2003): SJR 0.797 SNIP 0.709 Scopus rating (2002): SJR 1.275 SNIP 1.811 Scopus rating (2001): SJR 0.477 SNIP 1.424 Scopus rating (2000): SJR 0.652 SNIP 0.927 Scopus rating (1999): SJR 0.769 SNIP 0.791 Original language: EnglishMedia Technology, Chemical Engineering (all), Chemistry (all), Mechanical Engineering, Materials Science (all), Alkalinity,Bleaching, Chemical oxygen demand, Cleaning, Effluent treatment, Fatty acids, Hardwoods, Kraft pulp, Methanation,Methane, Wastewater treatment, Adsorbable organic halogens, Anaerobic waste water treatment, Biochemical methanepotential, Chemi-thermomechanical pulping, Chemical oxygen demand removals, Chlorine dioxide bleaching, Organicmatter degradations, Pulp and paper mill, EffluentsSource: FindItSource-ID: 2302843960Publication: Research - peer-review › Journal article – Annual report year: 2016 

Biochemical methane potential of kraft bleaching effluent and codigestion with other in-mill streams

http://orbit.dtu.dk/en/publications/biochemical-methane-potential-of-kraft-bleaching-effluent-and-codigestion-with-other-inmill-streams(9778b30d-f2ca-40a9-afdd-1bb88692c038).pdf?nofollow=true&rendering=long

Biochemical methane potential of kraft bleaching effluent and codigestion with other in-mill streams

Abstract

Similar works

Full text

Available Versions

Online Research Database In Technology