The impact of coastal tourism and the invisible sand emergency
With the arrival of the summer season and rising temperatures, millions of people flock to the coasts seeking refreshment, relaxation, and contact with nature. However, this massive seaside exodus generates an unprecedented peak of ecological pressure on fragile coastal ecosystems. Beaches are not merely expanses of inert sand on which to plant umbrellas, but vital transition zones (ecotones) between terrestrial and marine environments. They host essential microfauna, root networks that stabilize dunes, and act as the first barrier against coastal erosion. When mass tourism is not supported by rigorous environmental ethics and adequate infrastructure, the coastline quickly turns into an accumulator of pollutants.
The main problem plaguing our coasts during the summer is not only represented by illegally abandoned macro-waste, but by the mismanagement of waste sorting. Local administrations and urban sanitation companies face a colossal logistical challenge: waste volumes multiply in a matter of weeks, and the quality of the deposited materials plummets due to vacationers’ distraction and lack of knowledge of local rules. A single contaminated recycling bin on the promenade risks compromising entire tons of secondary raw materials, forcing plants to divert precious loads to landfills or incinerators. The purity of material streams must be guaranteed at the source, and this requires a civic and chemical education that must accompany every citizen even during their leisure time.
Beach pollution takes on insidious forms. Light and volatile materials such as food films, ice cream wrappers, or paper tissues, if not instantly disposed of in closed containers, are blown by the sea breeze straight into the water. Here, the mechanical action of the waves and solar radiation trigger photodegradation processes that shatter the polymers into microplastics within just a few weeks, introducing them directly into the food chain of pelagic fish, cetaceans, and ultimately, human beings. Properly managing one’s waste is not a simple administrative duty, but an act of global health and biological preservation.
The chemistry of the packed lunch: zero tolerance for contamination
The traditional packed lunch under the umbrella represents the ultimate test of our ecological maturity. The preparation and consumption of food on the beach generate a vast heterogeneity of waste that requires almost surgical attention. To ensure the efficiency of latest-generation treatment and anaerobic biodigestion plants, nomenclatures must be respected with absolute rigor: the wet fraction must be defined exclusively as ORGANICO. Fruit scraps, peach pits, mussel shells (in the vast majority of Italian municipalities), pizza crusts, and vegetable leftovers must end up exclusively in this stream, preferably inside certified compostable bioplastic bags. Leaving food residues on the sand, mistakenly believing they are “biodegradable and therefore harmless,” is a damaging practice: the accumulation of anthropogenic organic matter alters the delicate nutritional balance of the coastlines and attracts opportunistic species that threaten nesting birdlife.
Equally rigorous must be the management of beverage containers. The classic cans of orange soda, cola, or beer, as well as aluminum tuna tins and the tin foil used to wrap sandwiches, must be classified exclusively as METALLI. Aluminum and steel are considered “permanent materials”: they possess the extraordinary ability to be melted and regenerated infinitely without losing the slightest bit of their excellent structural, flexibility, and resistance properties. Extracting and processing new bauxite to produce primary aluminum requires an enormous expenditure of energy, whereas recycling metals allows for energy and climate-altering emissions savings close to 95%. To permit this metallurgical miracle, each type of waste must be managed separately from the moment we get up from our towel.
The most fatal error one can commit on the beach is cross-contamination. Throwing a paper napkin stained with sauce or suntan oil into the paper bin irreparably compromises cellulose recycling: fats act as hydrophobic agents that prevent the fibers from binding together again inside the paper mill. That greasy napkin must end up in the ORGANICO bin (if certified as compostable) or in the unsorted dry waste. Similarly, PET water bottles must be crushed longitudinally (to facilitate reading by optical selectors in the plants) and placed in the plastic bin, making sure to empty them completely of sand or residual liquids that would weigh down the ballistic sorting process.
Tricky objects under the sun: cosmetics, ice cream, and broken toys
The seaside environment introduces specific objects into the waste stream that generate profound confusion. Sunscreen bottles, for example, are a classic summer dilemma. Being generally made of rigid plastic (HDPE or PP), they are perfectly recyclable and should be placed in the plastic bin. However, it is imperative to ensure they are completely empty. The chemical UV filters contained in sun lotions, if spilled into bales of recycled plastic, can alter the characteristics of the regenerated polymers. If the bottle is equipped with a spray pump featuring an internal metal spring, the latter must be separated and thrown into the unsorted waste to avoid polluting polymer recycling with ferrous alloys.
Another great summer classic is artisanal or packaged ice cream. If the polystyrene (EPS) ice cream tub is clean, it goes into the plastic; but what to do with the wooden stick of the popsicle or ice cream bar? Being natural wood, its correct destination is ORGANICO. Conversely, the outer wrapper of the ice cream, often composed of a very thin and shiny multi-material (plastic and aluminum inextricably joined), ends up in the vast majority of cases in the unsorted dry waste, as the molecular separation of the two materials is not yet economically sustainable.
Beach toys (buckets, spades, molds, inflatable armbands, and air mattresses) represent a further critical issue. Many beachgoers, seeing them broken, throw them into the plastic bins. This is a very serious technical error. Plastic sorting bells and bins are intended exclusively for “packaging,” meaning objects that served to contain, protect, or transport goods. Toys are “durable goods” made of mixed plastics, resins, and soft PVC that melt at different temperatures compared to PET bottles or HDPE flasks. Introducing a broken bucket into a plastic packaging sorting plant causes mechanical interruptions and pollutes the molten material. Broken toys, punctured inflatables, and swimming goggles must strictly be disposed of in the unsorted dry waste or taken to the municipal eco-island.
The digital assistant for the sea: the role of SmartRicicla
The complexity of these rules is massively amplified by an intrinsic factor of tourism: geographical movement. Vacationers suddenly find themselves in a different municipality from their residence, with totally different municipal ordinances, bin colors, and collection calendars. Uncertainty breeds frustration and inevitably leads to incorrect disposal. To break down this informational barrier, technological platforms become irreplaceable allies.
In our Where do I throw it section, we constantly emphasize how modern ecology cannot do without software innovation. The SmartRicicla app proves to be the essential tool for anyone on vacation. Based on a scalable cloud architecture, the app geolocates the user on the beach they are visiting, instantly connecting to the database of the host municipality or the local sanitation company. If you have a doubt about where to throw your snack wrapper or your soda can, a quick search on the app gives you the exact answer in real-time. This eliminates the cognitive stress of the tourist, removes alibis for illegal dumping, and ensures that beach waste streams maintain extremely high purity standards.
The responsibility of a zero-impact summer
Enjoying the beauty and refreshment of our coastlines is a right, but protecting them is a non-negotiable duty. The engineering and chemical management of our domestic and holiday waste represents the silent infrastructure upon which the entire national circular economy rests. We must learn to consider our towel as a sacred perimeter, within which no dispersion of matter is allowed. Organizing in advance by bringing small separate bags from home, rejecting the devastating throwaway logic by favoring reusable bottles and tableware, and relying on advanced digital assistants like SmartRicicla to dispel any doubts, are actions of profound civic value. Summer must not represent a break from our environmental responsibility. The safeguarding of marine biodiversity, the purity of the waters we dive into, and the efficiency of the recycling industry depend on the millimetric attention we dedicate to what we leave behind, always remembering that in the ocean, and on Earth, there is no “elsewhere” to throw our distractions.
