Waste management problems in developed countries differ from those in
developing countries. Whereas the former have access to the needed financial and technical
resources as well as expertise and a well developed market, the latter countries struggle to
provide basic systems to manage waste such as a waste collection system. This becomes even
more obvious in urban and built-up areas where solid waste problems go hand-in-hand with
other environmental threats such as air pollution, waste water, sanitation and drainage problems.
In Iloilo City, a fast growing urban center, located at the southeastern side of Panay Island,
Philippines, solid waste management becomes increasingly more difficult. Presently, only 160
tons out of the estimated 310 tons daily waste generation are collected by a private contractor.
Due to the stressed traffic situation, the waste collection can only be conducted during night
time, whereas the most of recoverable materials are already segregated prior to disposal before or
during waste collection. Nevertheless, there are still about 300 waste pickers who make their
living by collecting sellable materials at the dumpsite. Although they are somehow accepted,
their presence complicates the efforts for site improvement and requires special measures in the
preparation of new waste management projects.
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Waste management poses challenges, but could unlock major environmental and economic gains
Every day, the city of Rio de Janeiro, one of the largest metropolises in the Southern Hemisphere, generates 17,000 tonnes of waste, ranging from large industrial debris to candy wrappers bought innocently at newspaper stands. While this waste presents a serious and urgent environmental challenge, it also fuels an increasingly significant portion of the economy, with benefits extending beyond financial gains. - When we look at developed European countries, many are already recycling between 40% and 50%, with some reaching 60%. From an economic standpoint, both recyclable materials and organic waste hold tremendous value - stated Adalberto Maluf, National Secretary for Environment and Environmental Quality at the Ministry of the Environment (MMA), during the Methane Forum: Climate Emergency Brake, at the Rio Nature and Climate Week. Citing a 2025 report, Maluf mentioned that Brazil literally throws away R$27 billion annually, while municipalities spend significantly more - R$45 billion - managing all this waste, often overlooking the environmental impact or economic potential buried in landfills and dumps. - We spend R$45 billion to collect and dispose of waste in landfills, yet we manage to recycle less than a third of the potential. I believe it will be necessary to review contracts, create performance-based remuneration mechanisms, and pay for both effectively sorted materials and those diverted from landfills - he added. According to the IBGE, 60.5% of Brazilian municipalities adopt some form of selective waste collection, and several initiatives serve as examples of how to manage city waste. In his panel presentation, Bernardo Ornelas, Project Coordinator at the Rio de Janeiro Municipal Urban Cleaning Company (Comlurb), highlighted Ecoparque do Caju, a national benchmark in waste management and recycling. There, received materials are sorted and can be used for biogas production, organic compounds for urban gardens, or human consumption, in the case of still...
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