Study of VOCs release during drying of plantation-grown Pinus sylvestris and naturally grown Russian Pinus sylvestris

Abstract

A study was carried out to investigate the release of volatile organic compounds (VOCs) during drying of plantation Pinus sylvestris grown in China and naturally grown Pinus sylvestris from Russia. Our purpose was to provide basic information that can help wood processing mills set their VOCs emission limits and control the exhaust gas within such limits. During conventional drying of the plantation Pinus sylvestris, a total of 22 chemical compounds were detected in the exhaust gas: 9 aldehydes including formaldehyde, 8 terpenes including α-pinene, and 3 additional compounds including alkane, and propylbenzene. The VOCs released during both conventional drying and high-temperature drying were the same. However, large amounts of benzene were detected during the high-temperature drying process. During conventional drying of the Russian Pinus sylvestris material, a total of 17 chemical compounds were detected: 7 aldehydes including formaldehyde, 6 terpenes including α-pinene, and 2 additional compounds. The VOCs released during conventional drying and high-temperature drying were the same. However, large amounts of camphene were detected during high-temperature drying. For plantation Pinus sylvestris, the release of VOCs primarily took place at the later stage of conventional drying, and at the earlier stage of high-temperature drying. For Russian Pinus sylvestris, the amount and the release rate of VOCs during conventional drying were extremely low, and the VOCs during high-temperature drying were primarily released at the later stage. The total amount of VOCs released during drying was much higher from the plantation Pinus sylvestris than from Russian Pinus sylvestris material.

Taxonomy, phytochemical and bioactive compounds and potential use as material with different drying methods of Alpinia latilabris Ridl. new record from Thailand

“…While β, α-Pinene and camphene increased significantly in the dry compared to the fresh sample. This supports the previous study of Shen et al (2020) who reported the amount of released α-pinene, β-pinene, myrcene, camphene and limonene increased after samples were dried. The spectra shown in the band as 817 -828 cm -1 had significantly increased intensity in the HD60 samples.…”

Uplift capacity evaluation of light-framed wood structure’s roof-to-wall connections

“…It has strong cold-resistance capability and does not require rich soil moisture conditions; thereby, it is capable for utilization as an afforestation tree species in mountainous and sand dune areas (Ekman et al 2002;Korkut et al 2008;Arriaga et al 2012;Cai et al 2016;Buyuksari et al 2017;Burawska-Kupniewska et al 2019;Sarkhad et al 2020;Sobierajska et al 2020). Pinus sylvestris L. has various apparent material performance, such as straight texture, clear pattern, moderate uniform structure, lightweight performance, low density, distinct rosin smell, high water resistance, high moisture resistance, good antifungal corrosion, and high durability, so it is mainly used in structural materials, and is also widely used in other wood production fields (Megnis et al 2002;Yildiz et al 2004;Rautiainen and Alen 2007;Temiz et al 2008;Simsek et al 2010;Bekhta et al 2014;Witomski et al 2014;Shen et al 2020). The SPF is a generic term for a class of coniferous specimen lumber, mainly from the United States of America and Canada, including spruce, pine, and fir (Zhang and Cai 2008;Gong et al 2014;Zheng et al 2015;Wang et al 2017;Zhang et al 2021).…”

Enhancement of Removal of VOCs and Odors from Wood by Microwave-Activated Persulfate

“…The VOCs emitted from extractives in wood pits have a complex composition that includes alkenes, alcohols, aldehydes, ketones, and terpenes. , Heat treatment and extraction methods are typically used to remove VOCs from wood. Heat treatment effectively removes some VOCs (such as terpenes and aldehydes), which are small molecules that are highly sensitive to temperature. , However, these methods require high energy consumption, and it is difficult to remove all VOCs from wood.…”