Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 5976-6002 |
| Number of pages | 27 |
| Journal | BioResources |
| Volume | 13 |
| Issue number | 3 |
| Publication status | Published - 15 Jun 2018 |
| MoE publication type | A1 Journal article-refereed |
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Keywords
- Biochar
- Activated carbon;
- Bio-based activated carbon
- Willow
- Pine bark
- X-ray tomography
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Effects of Biomass Type, Carbonization Process, and Activation Method on the Properties of Bio-Based Activated Carbons. / Siipola, Virpi (Corresponding Author); Tamminen, Tarja; Källi, Anssi; Lahti, Riikka; Romar, Henrik; Rasa, Kimmo; Keskinen, Riikka; Hyväluoma, Jari; Hannula, Markus; Wikberg, Hanne.
In: BioResources, Vol. 13, No. 3, 15.06.2018, p. 5976-6002.Research output: Contribution to journal › Article › Scientific › peer-review
TY - JOUR
T1 - Effects of Biomass Type, Carbonization Process, and Activation Method on the Properties of Bio-Based Activated Carbons
AU - Siipola, Virpi
AU - Tamminen, Tarja
AU - Källi, Anssi
AU - Lahti, Riikka
AU - Romar, Henrik
AU - Rasa, Kimmo
AU - Keskinen, Riikka
AU - Hyväluoma, Jari
AU - Hannula, Markus
AU - Wikberg, Hanne
PY - 2018/6/15
Y1 - 2018/6/15
N2 - Activated carbons (AC) serve as adsorbents in various applications requiring specific functionalities. In this study, the effects of biomass type, pre-carbonization process, and activation method on the properties of ACs were investigated. Chemical (KOH and H3PO4) and physical (CO2) activations were performed on slow pyrolyzed and hydrothermally carbonized (HTC) biochars produced from two feedstocks, willow and Scots pine bark (SPB). In addition, the adsorption capacities of the ACs were tested with two dyes and zinc metal. Distinct differences were found between the biochars and ACs regarding pore size distributions, surface area (238 - 3505 m2 g-1), and surface chemistry. KOH activation produced highly microporous ACs from all biochars, whereas with H3PO4 and CO2 there was also increase in the meso- and macroporosity with the HTC biochars. Adsorption capacity for dyes was dependent on the surface area, while for zinc it depended on AC’s pH. The results provide interesting insights into tailoring ACs for specific applications.
AB - Activated carbons (AC) serve as adsorbents in various applications requiring specific functionalities. In this study, the effects of biomass type, pre-carbonization process, and activation method on the properties of ACs were investigated. Chemical (KOH and H3PO4) and physical (CO2) activations were performed on slow pyrolyzed and hydrothermally carbonized (HTC) biochars produced from two feedstocks, willow and Scots pine bark (SPB). In addition, the adsorption capacities of the ACs were tested with two dyes and zinc metal. Distinct differences were found between the biochars and ACs regarding pore size distributions, surface area (238 - 3505 m2 g-1), and surface chemistry. KOH activation produced highly microporous ACs from all biochars, whereas with H3PO4 and CO2 there was also increase in the meso- and macroporosity with the HTC biochars. Adsorption capacity for dyes was dependent on the surface area, while for zinc it depended on AC’s pH. The results provide interesting insights into tailoring ACs for specific applications.
KW - Biochar
KW - Activated carbon;
KW - Bio-based activated carbon
KW - Willow
KW - Pine bark
KW - X-ray tomography
UR - http://www.scopus.com/inward/record.url?scp=85064618805&partnerID=8YFLogxK
M3 - Article
VL - 13
SP - 5976
EP - 6002
JO - BioResources
JF - BioResources
SN - 1930-2126
IS - 3
ER -