Search: id:"swepub:oai:DiVA.org:umu-199682" >
Preparation and cha...
Preparation and characterization of pulp and paper mill sludge-activated biochars using alkaline activation : a Box-Behnken design approach
-
- Simões Dos Reis, Glaydson (author)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Skogens biomaterial och teknologi,Department of Forest Biomaterials and Technology
-
- Bergna, Davide (author)
- Research Unit of Sustainable Chemistry, University of Oulu, PO Box 4300, Oulu, Finland; Unit of Applied Chemistry, University of Jyvaskyla, Kokkola University Consortium Chydenius, Talonpojankatu 2B, Kokkola, Finland
-
- Tuomikoski, Sari (author)
- Research Unit of Sustainable Chemistry, University of Oulu, PO Box 4300, Oulu, Finland
-
show more...
-
- Grimm, Alejandro (author)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Skogens biomaterial och teknologi,Department of Forest Biomaterials and Technology
-
- Lima, Eder Claudio (author)
- Institute of Chemistry, Federal University of Rio Grande Do sul (UFRGS), Av. Bento Gonçalves 9500, RS, Porto Alegre, Brazil
-
- Thyrel, Mikael (author)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Skogens biomaterial och teknologi,Department of Forest Biomaterials and Technology
-
- Skoglund, Nils (author)
- Umeå universitet,Institutionen för tillämpad fysik och elektronik
-
- Lassi, Ulla (author)
- Research Unit of Sustainable Chemistry, University of Oulu, PO Box 4300, Oulu, Finland; Unit of Applied Chemistry, University of Jyvaskyla, Kokkola University Consortium Chydenius, Talonpojankatu 2B, Kokkola, Finland
-
- Larsson, Sylvia (author)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Skogens biomaterial och teknologi,Department of Forest Biomaterials and Technology
-
show less...
-
(creator_code:org_t)
-
- 2022-09-02
- 2022
- English.
-
In: ACS Omega. - : American Chemical Society (ACS). - 2470-1343. ; 7:36, s. 32620-32630
- Related links:
-
https://doi.org/10.1...
-
show more...
-
https://umu.diva-por... (primary) (Raw object)
-
https://urn.kb.se/re...
-
https://doi.org/10.1...
-
https://res.slu.se/i...
-
show less...
Abstract
Subject headings
Close
- This study utilized pulp and paper mill sludge as a carbon source to produce activated biochar adsorbents. The response surface methodology (RSM) application for predicting and optimizing the activated biochar preparation conditions was investigated. Biochars were prepared based on a Box-Behnken design (BBD) approach with three independent factors (i.e., pyrolysis temperature, holding time, and KOH:biomass ratio), and the responses evaluated were specific surface area (SSA), micropore area (Smicro), and mesopore area (Smeso). According to the RSM and BBD analysis, a pyrolysis temperature of 800 °C for 3 h of holding and an impregnation ratio of 1:1 (biomass:KOH) are the optimum conditions for obtaining the highest SSA (885 m2 g-1). Maximized Smicro was reached at 800 °C, 1 h and the ratio of 1:1, and for maximizing Smeso (569.16 m2 g-1), 800 °C, 2 h and ratio 1:1.5 (445-473 m2 g-1) were employed. The biochars presented different micro- and mesoporosity characteristics depending on pyrolysis conditions. Elemental analysis showed that biochars exhibited high carbon and oxygen content. Raman analysis indicated that all biochars had disordered carbon structures with structural defects, which can boost their properties, e.g., by improving their adsorption performances. The hydrophobicity-hydrophilicity experiments showed very hydrophobic biochar surfaces. The biochars were used as adsorbents for diclofenac and amoxicillin. They presented very high adsorption performances, which could be explained by the pore filling, hydrophobic surface, and π-πelectron-donor-acceptor interactions between aromatic rings of both adsorbent and adsorbate. The biochar with the highest surface area (and highest uptake performance) was subjected to regeneration tests, showing that it can be reused multiple times.
Subject headings
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Environmental Sciences (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Samhällsbyggnadsteknik -- Miljöanalys och bygginformationsteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Civil Engineering -- Environmental Analysis and Construction Information Technology (hsv//eng)
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
-
ACS Omega
(Search for host publication in LIBRIS)
To the university's database