Development of fish scrap hydrolysis fertilizer production system/ John Bryan A Barrantes, Innaabbygail R. De Leon, Melanie M. Dumilig, Dale Francis O. Estopia, and Aya Angelica A. Obayan.--

Bachelor's thesis

College of Industrial Technology.-- Bachelor of engineering technology major in electronics technology: Technological University of the Philippines, 2025.

Includes bibliographic references and index.

Liquid fish fertilizers have been increasingly utilized in agriculture due to their high NPK
content, rapid nutrient release, and accessibility. Although these fertilizers supply
essential nutrients to plants, their production is often limited to manual methods. Existing
solutions, such as non-automated machines with shredding and mixing mechanisms,
remain inefficient and lack integration. To address these limitations, the researchers
developed an Automated Fish Scrap Hydrolysis Fertilizer Production System featuring a
shredder, mixer, and extraction mechanism integrated with sensors and other electronic
components. A prototyping approach was employed to meet the research objectives,
incorporating automation to achieve the desired solution. The system was evaluated based
on total NPK nutrient content and operational convenience. The NPK value obtained using
the traditional method was 0.93%, while the machine-based method yielded 2.39% with
sugar and 2.46% with molasses. Although there was no statistically significant difference
in NPK results between the traditional and automated methods, the automated process was
found to be more convenient in terms of reduced human labor and shorter fermentation
duration. Respondents rated the system as "Highly Acceptable" across various criteria, with
an overall assessment mean of x̅= 4.62. This innovation is expected to benefit farmers, fish
vendors, and the surrounding community by contributing to reduced water pollution and
lowering dependence on synthetic fertilizers.