This study presents a reliable model using Aspen Plus process simulator capable of performing sensitivity analysis the downdraft gasification linked to hydrogen production unit. Effects key factors, including temperature and steam biomass ratio (SBR) on syngas composition, calorific value are discussed then optimal conditions for maximum extracted. The is validated by experimental other modelin...

Trembling aspen (Populus tremuloides Michx.) regeneration dynamics including sprout production, growth, and clone size were measured to determine the effects of fire on small aspen clone persistence following a mixedseverity wildfire in the Black Hills, South Dakota. Four years postfire, 10 small, isolated aspen clones per low and high fire severity classes were compared with 10 unburned clones...

Quaking aspen (Populus tremuloides) biomass has declined in Yellowstone National Park (YNP) in the past century. We installed permanent belt transects (plots) for long-term monitoring of aspen stands both within and outside of established wolf pack territories on YNP’s northern range to determine if reintroduced wolves are influencing elk browsing patterns and aspen regeneration through a troph...

Ecologists have debated over the past 65 years whether quaking aspen (Populus tremuloides Michx.) has or has not declined in abundance, vigor, or regeneration in western North America. Many studies have provided divergent interpretations of the condition of aspen forests, leading to difficulty in translating this ecological information into management recommendations. To reconcile these contras...

Mixed plastic waste is challenging for any recycling process. Here, an enzymatic process compared with a biotechnological upcycling valorizing mixed constituted by PLA, PET, and PP. Both routes are modeled in Aspen Plus, analyzed bottlenecks, cost drivers, sensitivity regarding microbial performance. While only viable uniform feedstock, operating at optimized conditions reveals the potential to...

In western North America, quaking aspen (Populus tremuloides) is the most common hardwood in montane landscapes. Fire suppression, grazing and wildlife management practices, and climate patterns of the past century are all potential threats to aspen coverage in this region. If aspen-dependent species are losing habitat, this raises concerns about their long-term viability. Though lichens have a...