Physicochemical characteristics of different pulp and paper mill waste streams for hydrothermal conversion

dc.contributor.authorAssis, Englatina I.N.C.
dc.contributor.authorChirwa, Evans M.N.
dc.date.accessioned2021-09-14T13:52:23Z
dc.date.available2021-09-14T13:52:23Z
dc.date.issued2021
dc.description.abstractThe pulp and paper industry generates significant amounts of waste from various processes consisting of organic and inorganic matter. Due to its composition, the management of pulp and paper mill sludge presents an economic burden for wastewater treatment plants. In South Africa, paper mill sludge is mainly incinerated, landfilled or used for land application. These practices cause environmental and health hazards. In this study, a process of stabilization of paper mill sludge through hydrothermal carbonization is proposed. The quality of biochar produced and energy yield will depend on the elemental composition, calorific value and ash content of the sludge. Results revealed samples are composed of flat fibrous cellulosic morphology, with high volatile matter and little fixed carbon percentage. The main decomposition occurred between 220-400 °C. Sludge from primary clarifier contains the highest ash percentage, hence it was found to be unsuitable for energy recovery through hydrothermal carbonization. Sludge from kraft and recycling paper mills exhibited lower ash content and higher caloric values, thus more preferable for coal conversion through hydrothermal carbonization. The sludges have a sulfur composition (2.33%) compared to heavy fuel oils and bituminous coal.en_ZA
dc.description.departmentChemical Engineeringen_ZA
dc.description.librarianpm2021en_ZA
dc.description.urihttps://www.cetjournal.it/index.php/ceten_ZA
dc.identifier.citationAssis E.I., Chirwa E.M., 2021, Physicochemical Characteristics of Different Pulp and Paper Mill Waste Streams for Hydrothermal Conversion, Chemical Engineering Transactions, 86, 607-612 DOI:10.3303/CET2186102.en_ZA
dc.identifier.issn2283-9216 (online)
dc.identifier.other10.3303/CET2186102
dc.identifier.urihttp://hdl.handle.net/2263/81826
dc.language.isoenen_ZA
dc.publisherItalian Association of Chemical Engineeringen_ZA
dc.rights© 2021, AIDIC Servizi S.r.l.en_ZA
dc.subjectPulp and paper industryen_ZA
dc.subjectWasteen_ZA
dc.subjectTreatment planten_ZA
dc.subjectEnvironmental problemsen_ZA
dc.subjectSouth Africa (SA)en_ZA
dc.titlePhysicochemical characteristics of different pulp and paper mill waste streams for hydrothermal conversionen_ZA
dc.typeArticleen_ZA

Files

Original bundle

Now showing 1 - 1 of 1
Loading...
Thumbnail Image
Name:
Assis_Physicochemical_2021.pdf
Size:
918.1 KB
Format:
Adobe Portable Document Format
Description:
Article

License bundle

Now showing 1 - 1 of 1
Loading...
Thumbnail Image
Name:
license.txt
Size:
1.75 KB
Format:
Item-specific license agreed upon to submission
Description: