Evaluation of physiochemical, thermal and kinetic properties of wheat straw by demineralising with leaching reagents for energy applications

Effect of alkaline pretreatment on the characteristics of barley straw and modeling of methane production via codigestion of pretreated straw with sewage sludge

“…The decomposition rates were very low and became negligible after this stage. Similar results were found by the authors (Marin-Batista et al 2021;Siddiqi et al 2022). The TGA curves indicated that there was less degradation residue (char) from the pretreated straw than from the untreated straw.…”

“…The alkali pretreatment destroyed the straw surface, which was composed of hemicellulose and lignin. As observed, the hemicellulose and lignin of the pretreated samples were partially broken and removed, causing internal surface exposure, as found by the authors (Siddiqi et al 2022). Therefore, the alkali pretreatment destroyed the complex lignocellulosic structures and removed some external fibers.…”

“…Decreases in some elements, including C, Si, N, P, K, Cl, and H, was attributed to the alkali pretreatment and washing of the pretreated straw with water; this decreased the contents of some elements, such as Cl and the alkali metals, and K also dissolved well in water (Said et al 2013;Rani et al 2022). Siddiqi et al (2022) also detected a reduction in C, H, and N contents, as well as extraction of some minerals, due to wheat straw pretreatment with NaOH. As a result of the loss of these elements, the contents of other elements, such as Ca, Cu, Ni, Fe, Zn, Mn, Co, Mo, and S, increased, as reported previously (Jaffar et al 2016;Hassan et al 2017;Al-Da'asen et al 2022;Rani et al 2022).…”

Can urban e-commerce transformation improve economic resilience? a quasi-natural experiment from China

“…We draw inspiration from the framework proposed by Feder to establish a dual-sector model comprising both traditional and digital economic sectors [18]. Methodologically, we refer to the validation approaches used by Siddiqi et al, Zahid et al, and Ali et al [50][51][52]. Through this, we investigate the direct impact of the construction of NEDC on urban economic resilience.…”

Use of CO2 in Pressurized, Fluidized Bed Gasification of Waste Biomasses

“…To counteract this problem, it is necessary to influence the chemistry of the ashes and thus enable conversion at higher temperatures. The first and most frequently applied solution (particularly for straws) requires leaching of the feedstock, which is mainly conducted through washing with water solutions of various pH levels [28,29]. The second method is based on the premise of the possibility of conducting a chemical reaction between the ash components that express low melting temperature, and an additive of tailored chemical composition, which at process conditions (850-950 • C) react together to produce compounds that have higher melting temperatures and thus do not form a liquid phase [30,31].…”