Other Wastes

Other Wastes in Mauritius, though constituting only 5.7% of total MSW, pose significant disposal challenges due to their low biodegradability and recyclability. By exploring alternative uses, enhancing regulations, and investing in waste processing facilities, Mauritius can minimize the environmental impact of these materials while reducing landfill dependency.

Components such as electronic equipment, leather as well as any obsolete waste components were classified as others which represented 5.7% of the total municipal solid waste stream.

Composition and Statistics of Other Wastes in Mauritius

According to the 2021 National Solid Waste Characterisation Study (google access), Other Wastes account for approximately 5.7% of total municipal solid waste (MSW) in Mauritius. This includes a mix of residual materials from various industries, commercial establishments, and households.

Characteristics:

• These materials do not fit into traditional recycling categories.
• Most of these wastes are either incinerated or sent to the landfill.
• Low decomposition rates make them persistent environmental pollutants.

Sources of Other Wastes

Other Wastes in Mauritius originate from multiple sources, including:

1. Households

   • Old shoes, bags, and leather accessories.
   • Worn-out rubber materials like tires and mats.
   • Broken ceramic and pottery items.

2. Industrial and Commercial Sectors

   • Leather and rubber production waste from shoe and upholstery manufacturers.
   • Ash and non-recyclable residues from manufacturing processes.

3. Construction and Demolition (C&D) Waste

   • Concrete dust, broken ceramics, and insulation materials that do not fit into traditional C&D waste.
   • Residual materials from demolished buildings.

4. Burnt Waste and Incineration Ashes

   • Industrial furnaces and power plants produce ash that is difficult to dispose of.
   • Household incineration contributes to residual ash accumulation.

Current Management of Other Wastes

Other Wastes are challenging to manage due to their diverse composition and low recyclability. Mauritius primarily deals with this category through:

1. Landfilling

• Majority of Other Wastes are sent to the Mare Chicose landfill, adding to its burden.
• Ash and inert waste accumulate without decomposition, making landfills fill up faster.

2. Limited Recycling and Recovery

• Some rubber and leather scraps are repurposed for handicrafts and furniture upholstery.
• Ash from incinerators and industrial processes is rarely reused, despite potential applications in road construction and cement manufacturing.

3. Informal Collection and Reuse

• Some waste pickers salvage reusable items, but there is no formal processing system.
• Old rubber tires are sometimes repurposed for playground surfaces or industrial buffers.

Challenges in Managing Other Wastes

Despite their relatively small share of total waste, Other Wastes pose significant challenges:

1. Low Recycling Potential

   • These materials lack dedicated recycling facilities.
   • Composite materials (e.g., leather-plastic blends) are difficult to separate for processing.

2. Persistence in the Environment

   • Items like rubber and ceramics take decades to decompose.
   • Ash disposal contributes to air and soil pollution.

3. Lack of Alternative Uses

   • Unlike metal or paper waste, Other Wastes have few established secondary markets.
   • No national policies incentivizing the reuse of these materials.

4. Health and Environmental Concerns

   • Burning rubber and leather waste releases toxic fumes.
   • Accumulated ash contains heavy metals, posing soil and water contamination risks.

Recommendations for Improved Management of Other Wastes

To reduce landfill pressure and environmental impact, Mauritius needs a strategic approach to managing Other Wastes:

1. Expanding Reuse and Repurposing Initiatives

• Encourage industries to repurpose rubber and leather waste into insulation materials, carpets, and playground surfaces.
• Use ash as a raw material in cement and road-building projects.

2. Developing a National Waste Sorting and Processing Facility

• Establish dedicated facilities for processing composite and residual waste.
• Implement sorting mechanisms to separate usable fractions from landfill-bound materials.

3. Encouraging Industrial Collaboration

• Partner with construction companies to use ceramic and concrete dust in road filling and tile manufacturing.
• Encourage leather and textile industries to develop circular economy models.

4. Strengthening Regulations and Public Awareness

• Ban the open burning of rubber and leather waste to reduce air pollution.
• Educate businesses and consumers on alternative disposal and reuse options.