Soru

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Across rapidly growing West African municipalities, municipal solid waste management presents a severe environmental and public health crisis. In cities like Accra, over sixty percent of daily waste output consists of organic biodegradable materials that decompose untreated in open landfills, generating high volumes of methane emissions and leaching toxic compounds into groundwater reserves. To counter this escalation, several urban development initiatives have introduced community-scale anaerobic digestion technology. These decentralized biodigesters process market refuse directly at the neighborhood level, diverting organic matter from overburdened municipal dumps. By converting decomposing food scraps into purified biogas for domestic cooking and nutrient-rich biofertilizer for peri-urban agriculture, decentralized digestion addresses two critical urban challenges simultaneously: reducing municipal landfill dependence and generating renewable local energy. While initial equipment installation requires modest capital investments and community training in waste sorting, the long-term ecological and economic benefits far outweigh these startup expenditures. Ultimately, scaling neighborhood-based organic waste recovery offers a sustainable blueprint for mitigating urban carbon footprints while enhancing municipal sanitation infrastructure across developing cities.

Which of the following options best expresses the essential idea of the passage while omitting supporting details and minor illustrations?