提示詞描述

Create a high-impact, publication-quality schematic illustrating a regionally tailored waste-to-green hydrogen platform based on Saudi date palm biomass integrated with bioelectrochemical systems. Left panel (Feedstock & Pretreatment): Depict abundant date palm residues (cull & immature dates, fronds, leaves, and date seeds) from arid Gulf agriculture. Show a dark fermentation (DF) reactor converting lignocellulosic biomass into H₂ + acetate-dominant volatile fatty acids (VFAs). Use molecular icons (acetate, butyrate) to emphasize purpose-designed substrate conditioning rather than standalone DF hydrogen recovery. Central panel (Circular Integration & Novelty): Highlight date seeds being valorized into conductive biochar via controlled pyrolysis. Visually link this biochar back into the system as a functional carbon material, emphasizing a fully biomass-derived loop (same feedstock → substrate + electrode material). Annotate “Enhanced conductivity, biofilm support, DIET promotion.” Right panel (Microbial Electrolysis Cell): Illustrate a dual-chamber microbial electrolysis cell (MEC) fed with DF effluent. Show biochar-enhanced anode/cathode, dense electroactive biofilms, direct interspecies electron transfer (DIET) pathways, electron flow to the cathode, and high-purity green H₂ evolution. Include performance icons: ↑ hydrogen yield, ↑ coulombic efficiency, ↓ overpotential. Bottom panel (Impact & Regional Relevance): Use clean infographics to summarize key impacts: • Sustainable date palm waste management • Reduced open burning & GHG emissions • Locally derived electrodes (no commercial carbon dependence) • Alignment with Gulf circular economy & green hydrogen goals Style: Clean white background, desert–green–blue color palette, sharp vector graphics, minimal text, strong arrows showing energy/material flows, and bold callouts for “First use of date seed biochar in MEC hydrogen production” and “DF as MEC-tailored pretreatment.”