Establishment of Processing Protocol For Liquid and Solid Fertilizer Derived from Slaughterhouse Waste

Abstract

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This study was conducted to estrablish a processing protocol for liquid fertilizer derived from slaughterhouse waste. It was conducted on March 1 to April 20, 2026 at the Municipal Slaughterhouse, Imelda, Pudtol, Apayao. The study was laid at an elevated wooden platform using plastic six drums as a processing media for T1. Raw T2. Fermented (Anaerobic), T2. Effective Microorganism assisted fermentation and Two drums of 50L slaughterhouse waste – were subjected to three (3) treatments unprocessed (T1), fermented (anaerobic fermentation) (T2), and Effective Microorganism assisted fermentation (T3). A a 15-day fermentation period followed by a secondary refinement stage using a specialized five layer gravity filtration system composed of gravel, sand, and activated charcoal. All samples from every stage of processing were collected and brought to authorized laboratories for macro-nutrient and bacterial content analysis. The study concludes that slaughterhouse waste is a highly viable and effective substrate for the production of liquid fertilizer. Through the establishment of a rigorous four-stage processing, the resarch demonstrated that EM-Assisted Fermentation (P3) the most effective technology for nutrient recovery, achieving a peak Nitrogen concentration of 10.81%. This has a significant enhanchment over raw waste and standard anaerobic processing, proving that the inoculation of Effective Microorganisms accelerates the mineralization of animal proteins into a concentrated liquid nitrogen source. Furthermore the 15-day fermentation period, combined with a five layered gravity filtration system can reduce the initially hazardous pathogen load (toal coliform >8.0MPN/100ml) to a stabilized and safe level (1.1 MPN/100ml) while completely eliminating fecal coliform.