مجلة المنهل الاقتصادي
Volume 9, Numéro 1, Pages 699-710
2026-05-25
Circular Economy In The Oasis Ecosystem: Valorization Of Date Palm By-products Industrial Application In Southeastern Algeria — A Critical Systematic Review
Authors : Hussain Ali .
Abstract
Southeastern Algeria's 12.2 million date palms generate over 700,000 t yr⁻¹ of valorizable biomass, predominantly disposed of by open-field burning. This PRISMA-guided systematic review critically synthesises evidence from 45 sources across four valorization pathways: construction materials, activated carbon production, thermochemical energy, and agri-food biotechnology. Palm midrib fiberboards achieve tensile strength of 16.9–43.8 MPa; date-seed activated carbon reaches iodine numbers up to 787 mg g⁻¹ and 86.9% COD removal; updraft gasification achieves 95% biomass conversion. An integrated bio-refinery model yields a payback period of approximately 4.0 years, 12–15% net margin, and avoidance of approximately 220,000 t CO₂eq per facility annually. Three original contributions are made: a cross-sector critical synthesis resolving inter-study contradictions; a regionally calibrated economic feasibility model; and a three-tier stakeholder policy roadmap. Life-cycle assessment data and industrial-scale pilot validation are identified as the most critical research gaps.
Keywords
date palm ; circular economy ; biorefinery ; activated carbon ; lignocellulosic composites ; biomass gasification ; waste valorization
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