Good question, Improper disposal of coffee husks can lead to environmental damage and health issues, including respiratory problems, eye irritation, and nausea. creating pollution and contamination problems that can cause eutrophication of the water systems and kill aquatic plants and animals. The big problems derived from the current model of coffee consumption are deforestation for their crops and soil erosion. When coffee grounds are sent to landfill, they decompose to produce methane, a harmful greenhouse gas. The decomposition of coffee waste in landfills creates an acidic leachate which can damage the surrounding soil that also generates greenhouse gases.

Suggestion-The coffee husk must be dump into compost pit along with other organic matter such as leaves or grass clippings (20+80 ratio) after some time, coffee husk compost can improve soil properties and increase crop yields. The application of coffee husk compost could increase the production of shallots, red pepper, lettuce fruit and chili pepper. The composition of the compost pile should not exceed 20% coffee husk grounds by volume, or it can be toxic to plants. Excess coffee grounds, if applied to the soil before composting, have multiple effects on the soil system. So about 80% must be mixed others waste. However it can be used as direct use as fuel in farms, silage, animal feed, fermentation studies, use as adsorbents,

Nyaanga Boaz Nyamari There are many effects of the coffee waste on the environment which can be listed and I have personally listed down the same and here are the few ones for your reference:

1) Production of methane, a harmful greenhouse gas when dumped in landfills

2) Creation of acidic leachate, which can damage the surrounding soil and generate greenhouse gases

3) Deforestation for crops and soil erosion

4) Respiratory problems, eye irritation, and nausea

-5) Environmental damage and health issues

Nyaanga Boaz Nyamari further more to my answer i would also like to add few more negative and positive effects like:

offee husks, a byproduct of coffee processing, can have both positive and negative effects on the environment if not managed properly.

Negative effects:

1. Water pollution: Coffee husks can contaminate water sources if disposed of in rivers or lakes, affecting aquatic life.

2. Soil degradation: Improper disposal can lead to soil acidification, reducing fertility and affecting plant growth.

3. Air pollution: Burning coffee husks can release harmful gases, contributing to air pollution.

4. Waste accumulation: Coffee husks can accumulate and create waste management issues if not disposed of properly.

Positive effects (with proper management):

1. Composting: Coffee husks can be composted and used as organic fertilizer, improving soil health.

2. Bioenergy: Coffee husks can be converted into biofuels, providing a renewable energy source.

3. Animal feed: Coffee husks can be used as animal feed, reducing waste and providing a nutritious feed supplement.

4. Soil amendment: Composted coffee husks can help improve soil structure and fertility.