Article Per Year (5 Year)
p-Index From 2021 - 2026
0.23
P-Index
This Author published in this journals
All Journal AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment)
Dyah Suci Perwitasari
Department of Chemical Engineering, UPN “Veteran” Jawa Timur. Indonesia
Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences Education Energy Environmental Science

Published : 1 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 1 Documents
Search

 1 
The Effect of Stirring Speed and pH on the Synthesis of Calcium Nitrate Fertilizer from Eggshell Waste Using Precipitation Method Latifa Chusnul Primadhani; Thoriqul Hilmi Afan Mathovani; Sintha Soraya Santi; Ketut Sumada; Dyah Suci Perwitasari
AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Vol. 10 No. 1 (2026)
Publisher : Asia Pacific Network for Sustainable Agriculture, Food and Energy (SAFE-Network)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29165/ajarcde.v10i1.968

Abstract

Eggshell waste is a calcium-rich biomaterial with high potential as a raw material for fertilizer production. This study investigates the effect of stirring speed and pH on the synthesis of calcium nitrate from chicken eggshells using a dissolution–precipitation method. The process involved dissolution in nitric acid (HNO?) followed by precipitation using ammonium hydroxide (NH?OH) at varying stirring speeds (200–400 rpm) and pH levels (5–9). The products were analysed using X-ray fluorescence (XRF), SEM-EDX, and yield calculations. XRF analysis showed that the eggshell contained 98.72% calcium. The results indicated that increasing stirring speed improved yield, while pH significantly affected product composition. The optimum condition was obtained at pH 7 and 400 rpm, yielding calcium and nitrogen contents of 29.47% and 16.93%, respectively, which meet the Indonesian National Standard (SNI 02-2806-1992). These findings demonstrate that eggshell waste can be effectively used as an alternative raw material for the production of calcium nitrate fertiliser. Contribution to Sustainable Development Goals (SDGs):SDG 12: Responsible Consumption and ProductionSDG 13: Climate ActionSDG 15: Life on Land
Co-Authors Ketut Sumada Latifa Chusnul Primadhani Sintha Soraya Santi Thoriqul Hilmi Afan Mathovani