Production of phosphate fertilizer from bone meal extracted from animal bones as an alternative to phosphate rock which is harmful to soil.

Replacing phosphate rocks by bone meal will help to improve the soil and save the lives of micro organisms since it is organic in nature.

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Eligibility Criteria

  • I confirm that I am fully aware of the eligibility criteria and terms of the Act for Biodiversity Challenge and that I am eligible to apply.
  • I am 18 years old or older.

Initiative's representative name

Daniel Mjinja

Initiative's representative date of birth


Initiative's representative gender

  • Man

Headquarters location: country

  • Tanzania

Headquarters location: city

Dar es Salaam

Where are you making a difference?


Date Started


Project Stage

  • Growth (have moved past the very first activities; working toward the next level of expansion)

Yearly Budget : What is your current yearly budget for the initiative?

  • €10k - €50k

Organization Type

  • For-profit

1. Founding story: Share a story about the "Aha!" moment that led the founder(s) to get started or the story of how you saw the potential for this project to succeed.

My mother has been in the business of bone meal for poultry's food as it contains Calcium and Phosphorous, since 2013. In 2017, one of my friend who was working in fertilizers manufacturing industries told me they were doing research looking for an alternative of phosphate rocks since there is no new discovery of phosphate rocks deposit and it was also discovered that, phosphate rocks contain radioactive material called Caedium which is harmful to the soil and the lives of microorganisms. As I knew there is phosphorous in bone meal, I started doing more researches on how to use bone meal which are considered as wastes as a substitute for phosphate rocks by a bone meal. In 2019, we registered a company legally.

2. The problem: What problem are you helping to solve?

The major problems solved are; environmental pollution by animals' bones from the environment, and establishing a better alternative for phosphate rocks in producing phosphate fertilizer since phosphate rocks contain Caedium which are harmful to soil and microorganisms, and are also non-renewable.

3. Your solution: How are you working to solve this problem? Share your specific approach.

When animals such as cows, pigs, and goats are slaughtered, meat is what is needed most from them. The animal bones are left behind as by-product considered waste and damped but these animal bones can be very useful as they produce bone meal which is used as a nutritional supplement for poultry, and can also be used as a phosphate fertilizer. Animal bones contain Phosphorus which is used to make phosphate fertilizer that will help to increase agricultural yield since it is a Phosphate fertilizer which is organic and does not contain harmful minerals compared to Phosphate fertilizer used now in the country made from Phosphate rocks which contain radioactive material called Caedium that are harmful to the soil and microorganisms. The phosphate fertilizers from bone meal produced will be sold directly to farmers and industries producing compound fertilizers such as NPK, and DAP at a cheaper price compared to the one which is currently available in the market.

4. Innovation: How are you innovating or using unique approaches to solve the problem?

Detailed feasibility study of utilizing bone meal as a phosphate fertilizer which our company is focusing on expansion has been carried out. It was discovered that, in Tanzania, bone meal is used as the poultry's food only. Our company is going to be the first company in Tanzania using a bone meal as a phosphate fertilizer; with well and modified equipment, bone meal that is easily consumed by the soil will be produced.

5. Collaboration: How does your initiative seek to bring key players together to preserve biodiversity?

This initiative will help the farmers to attain higher yields since a fertilizer will be accessed at a cheaper price and will not affect the soil. Also it will help the government to cut importation and help to reduce the foreign currency incurred through importation and hence improving the economy of our country.

6. Impact: how has your project made a difference so far — in terms of both business outputs and social impact? How do you plan on measuring progress?

1. It will help the farmers which comprise 80% of the Tanzanians to obtain high agricultural yields at a low cost thus improving their living standards. 2. Provision of a lot of employments to the local people helping to reduce the unemployment load in the country. We approximate to provide direct and indirect employments to more than 500 people up to 2025. 3. Production of the bone meal will enhance environmental conservation policies since the animal bones which are regarded as wastes, will now be utilized to produce useful product as a results large amount of wastes will decline in the environment. 4. Replacing phosphate rocks in producing phosphate fertilizer will help to improve the soil since bone meal is organic in nature while phosphate rocks contain a radioactive material called Caedium. 5. The project will help in improving the economy of our country since the budget set for fertilizer importation will be reduced and used for other development activities.

7. Growth strategies: what are your main strategies for scaling your impact?

The bone meal is being produced by our company currently however due to low budget, and low and outdated technology equipment, we produce an average of 10 tons per month which is all sold to poultry foods manufacturers. We are now focusing to expand the production to increase the profit. With enough fund, the company will be able to design and establish a modernized production facility to increase the quality and quantity of the produce. Our target is to be able to produce 20 tons per month by 2025 and to reach 50 tons per month by 2030.

8. Creating shared value: How does your initiative create value for society? Or different stakeholders?

1. Importation of the phosphate fertilizers which comprise 90% of the available fertilizers will decline as the phosphate fertilizer will be available within the country, thus a lot of foreign currency will be saved. 2. Our product will be sold at a more affordable price. 3. Phosphate rocks once used, the deposits keep on declining while our bone meal keeps assurance of the availability of phosphate fertilizer since it is renewable. 4. Combating with environmental preservation policies of Tanzania as wastes in our environment will be collected and recycled to attain a very valuable and useful product. 5. Creates employment opportunities to the local people.

9. Financial sustainability plan: can you tell us about your plan to fund your project and how that plan will be sustainable in the short, medium, and long term?

Despite different methods of financing, our company has preferred the following financing methods for short term plan; self financing and grants. Our company will finance itself when the production increases, the revenue collected will be used for expansion, and at some point, we will take a loan from banks for further expansion.

10. Team: what is the current composition of your current team (types of roles, qualifications, full-time vs. part-time, board members, etc.), and how do you plan to evolve the team’s composition as the project grows?

1. DANIEL MJINJA Role: Production Manager working Full Time Skills: ● Design Skills ● Organizational Skills ● Leadership Skills ● Presentation Skills ● Communication Skills Qualification: Bachelor of Science in Petroleum Engineering. 2. TECLA MARIWA Role: Marketing Manager working Full Time Skills: ● Business Skills. ● Communication Skills. ● Leadership Skills. ● Problem Solver ● Presentation Skills Qualification: Bachelor of Science in Chemical and Processing Engineering.

11. How did you hear about this challenge?

  • Social media


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