Author Archives: Nadjib Drouiche

About Nadjib Drouiche

Dr. Nadjib Drouiche is a multidisciplinary researcher and policy analyst with an extensive academic background and a strong record of scientific publications across several domains. His research interests span semiconductor technology, energetics, and environmental sciences, with a particular emphasis on desalination, wastewater treatment, and sustainable water management.

Can Treated Wastewater Help Algeria Overcome Water Scarcity?

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Water scarcity is among the most critical environmental and socio-economic challenges confronting Algeria. Located largely within arid and semi-arid climatic zones, the country experiences highly variable rainfall, frequent droughts, and limited renewable freshwater resources. Per capita renewable water availability in Algeria is estimated at around 404 m³/year, placing the country well below the internationally recognized water scarcity threshold of 1,000 m³/year [1]. Climate change projections indicate further reductions in precipitation, rising temperatures, and increased evapotranspiration, all of which are expected to intensify water stress in the coming decades [2]. In this context, the search for alternative and non-conventional water resources … Continue reading →

Why Delaying Climate Investment Today Will Cost the MENA Region Far More Tomorrow

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Climate change is no longer a distant or abstract risk. Across the Middle East and North Africa, its costs are already visible in mounting heat stress, water scarcity, food system pressures, infrastructure damage, and rising economic vulnerability. These impacts are not projections for the end of the century; they are current realities shaping development trajectories, public budgets, and social stability. The central question facing policymakers is therefore no longer whether climate change will be costly, but whether societies choose to pay through strategic investment today or through escalating losses tomorrow. Scientific and economic evidence converges on a clear conclusion : … Continue reading →

Restoring the El Harrach River: A Strategy for Environmental, Urban, and Social Renewal

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The El Harrach River, which flows through some of the most densely populated areas of Algiers, has for several decades become a symbol of the environmental challenges faced by rapidly urbanizing coastal cities. The foul odors that recur regularly are not only a nuisance for residents: they reflect a deep ecological imbalance, chronic pollution, and a deterioration of quality of life. Understanding the origins of these odors and proposing sustainable solutions requires an integrated analysis of the hydraulic, social, urban, industrial, and biological pressures exerted on this watercourse. The Degradation of El Harrach River For years, a significant share of … Continue reading →

Membrane Innovation: Transforming Water Security in Arid Regions

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Membrane innovation has emerged today as one of the most decisive technological levers for arid countries facing water scarcity, degradation of natural resources, and the rapidly increasing water demand for drinking, agricultural, and industrial water. At the heart of this silent revolution, membranes, whether reverse osmosis, nanofiltration, ultrafiltration, forward osmosis, or emerging processes such as biomembranes and graphene-based membranes, have transformed the way dry nations produce, recycle, and secure their water supply. Far from being a simple technical tool, they have become a major geopolitical, economic, and environmental instrument. In the context of accelerated climate change, where extreme droughts are … Continue reading →

Sahara Nature-Based Solutions: Algeria’s Ancestral Water Systems for Climate Resilience and Sustainability

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Nature‑based solutions (NBS) have emerged as a critical strategy for sustainable water resource management, especially in arid and semi‑arid regions where water scarcity is amplified by increasingly erratic rainfall, more frequent extreme weather events, and progressive ecosystem degradation. Algeria, which spans from the Mediterranean littoral to the vast expanses of the Sahara Desert, is endowed with a rich heritage of traditional hydraulic techniques adapted over centuries to the region’s harsh climate [1]. Long before modern hydraulic infrastructures, these techniques leveraged a deep understanding of local hydrology and integrated human settlements within the natural cycles, enabling a remarkable resilience to climatic … Continue reading →

Why Algeria Should Become the Regional Hub for Predictive Drought and Water Modeling

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North Africa is entering a new climate era defined by chronic drought, accelerating warming, and unprecedented pressure on water systems that were never designed for this level of stress. Over the last decade, the region has experienced a succession of dry years, but recent analyses from the Copernicus Global Drought Observatory show that since late 2023 the drought signal in northern Africa has been both multi-annual and structurally deeper than past cycles, with pronounced precipitation deficits, rising evapotranspiration, and abnormal land-surface temperatures. These dynamics have led to measurable impacts on groundwater recharge, agricultural productivity, and reservoir inflows, creating a complex … Continue reading →

Seawater Reinvented: Inside the Race to Build Cleaner and Smarter Desalination

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Desalination has stopped being an engineering footnote and quietly become one of the most consequential climate-era industries. Once synonymous with enormous power plants, thick plumes of hypersaline waste and prohibitive costs, modern desalination is remaking itself along three intertwined axes: slashing energy needs, turning brine from a waste into a resource, and folding data-driven intelligence into plants and networks. The result is a trajectory that could make seawater an affordable, environmentally acceptable pillar of water security for coastal and island nations ; provided the industry solves the brine and emissions puzzles fast enough. Recent projects and a surge of academic work … Continue reading →

Role of Algerian Matorrals in Biodiversity Conservation and Climate Adaptation

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Matorrals, Mediterranean shrublands including maquis and garrigue form a key component of Algeria’s ecological landscapes. Stretching from coastal zones to foothills and lower mountain belts, they serve as transitional ecosystems between humid northern forests and southern semi-arid steppes. Despite their limited spatial coverage, they host rich biodiversity, including many endemic and xerophytic species, and provide crucial ecosystem services such as soil protection, carbon storage, and hydrological regulation. Their structural diversity and adaptive traits make them among the most resilient vegetation types under Mediterranean climatic stress. Recent national studies and international assessments (IUCN, Plan Bleu) highlight their essential role in land … Continue reading →

Advancing Circular Economy in Water Management in Algeria: From Wastewater to Strategic Resource

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As climate change accelerates water scarcity across the Mediterranean and the Sahara, countries are compelled to rethink their approach to water management. The traditional linear model of extracting freshwater, using it once, and discharging it into the environment is no longer viable in regions where rainfall is decreasing, aquifers are overexploited, and agricultural demand continues to grow [1-2]. In Algeria, this challenge is especially acute – declining annual precipitation, high evapo-transpiration rates, rapid population growth, and urban expansion place tremendous pressure on limited freshwater resources. At the same time, industrial and agricultural demands continue to rise, further stressing conventional water … Continue reading →