Development Of Chitin Extracting Machine From Crab Shell Wastes For The Production Of Biopesticides
Volume 3 - Issue 5, May 2019 Edition
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Author(s)
Mary Grace B. Rivera, Ramirez, Khevin A., Mercado, Joy Gladice C., Aguirre, Nowell Michael J.
Keywords
biopesticide, chitin, crab shell, extracting machine
Abstract
This study aimed to develop a chitin extracting machine for the production of biopesticide. The machine is composed of hammer mill, treatment drum, rotating block, plastic strainer sieve screen, heater, and a motor. Hammer mill has the operating capacity of 4kg of crab shells with the operating speed of 1730 rpm. The researchers used two method of extraction process of chitin. The concentration and solute solvent ratio of HCl and NaOH, number of baths, time per bath and temperature was adapted from the study of Islem Younes et al. (2016). The washing time, volume of water for washing and agitating speed was from the study of Ongo et al. (2016). Based on the experimental testing, the obtained number for both baths of water after HCl and NaOH treatment was 2 washes and an operating time of 11 hours and 1.962 minutes. Performance testing of the chitin extracting machine in terms of its extraction rate, percent yield and extraction efficiency was also conducted considering the established operating conditions during the preliminary testing to evaluate the performance of the machine. The results include an extraction rate of 46.834 g/hr, percent yield of 12.9167% with an extraction efficiency of 92.2619%. Also, the pH level of the product after two washes of water was found to be 7.06.
References
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