Carbon-negative cement-bonded biochar particleboards

نویسندگان

چکیده

Abstract Biochar from bio-waste pyrolysis presents excellent CO 2 sequestration capacity. This study innovated the design of cement-bonded particleboards utilizing a substantial amount 50–70 wt.% pre-soaked biochar to render products carbon-negative. We investigated roles in magnesium oxysulfate cement (MOSC) system and demonstrated good mechanical functional properties particleboards. In presence biochar, amounts hydration were enriched systems as illustrated by thermogravimetric analyses (TGA) X-ray diffraction (XRD). further incorporated supplementary cementitious materials (SCMs) generated 5 Mg(OH) ⋅MgSO 4 ·7H O (5–1–7) phase MOSC system. As result, our designs satisfied standard requirements for flexural strength (> 5.5 MPa) thickness swelling (< 2%). Moreover, presented low thermal conductivity pores disrupted bridging within that high dosage ratio could significantly offset emissions (i.e., carbon-negative) via life cycle assessment. Noticeable economic profits also be accomplished For instance, 50BC-MOSC bonded particleboard (with 50 aggregate, binder) with promising store 137 kg tonne −1 yield an overall profit 92 116 USD m −3 depending on carbon prices different countries. summary, new carbon-negative curtail construction promote realization neutrality circular economy. Graphical

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ژورنال

عنوان ژورنال: Biochar

سال: 2022

ISSN: ['2524-7972', '2524-7867']

DOI: https://doi.org/10.1007/s42773-022-00185-8