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KCL LIQUID FERTILIZER PRODUCTION FROM WASTE WATER OF SEAWEED PROCESSING INDUSTRIES AND GALVANIZED INDUSTRIES
Ransi Pasae (a*), Maming (b), Eddy Soekendarsi (c)

a. Environmental Management Study Program. Graduate School of Hasanuddin University
Kampus Unhas Tamalanrea. Jalan Perintis Kemerdekaan KM 10. Makassar, South Sulawesi
*email :ransipasae[at]gmail.com
b. Chemistry Department. Faculty of Mathematics and Science of Hasanuddin University.
Kampus Unhas Tamalanrea. Jalan Perintis Kemerdekaan KM 10. Makassar, South Sulawesi.
c. Biology Department. Faculty of Mathematics and Science of Hasanuddin University.
Kampus Unhas Tamalanrea. Jalan Perintis Kemerdekaan KM 10. Makassar, South Sulawesi.


Abstract

Abstract The seaweed processing industry uses potassium hydroxide (KOH) in the process of cooking seaweed, while the galvanized industry uses hydrogen chloride (HCl) in the pickling process. Wastewater from both types of industry can cause environmental pollution if it is not managed properly. This study aims to utilize wastewater from the seaweed processing industry and the galvanized industry to produce KCl liquid fertilizer as one of the environmental management efforts while providing economic value for waste. Quality of wastewater from the seaweed processing industry, wastewater from the galvanized industry, KCl liquid fertilizer and heavy metals content in fertilizers was analyzed through experimental testing using the SNI and AOAC method. The results showed that wastewater from seaweed processing industry can be used together with wastewater from the galvanized industry to produce KCl liquid fertilizer that fulfills the requirements of SNI 02-2805: 2005 and Peraturan Menteri Pertanian No. 43/Permentan/SR.140/8/2011. Potassium content as K2O from KCl liquid fertilizer produced ranged from 727 - 16443 ppm, where the value is higher than the standard according to SNI 02-2805: 2005 of 600 ppm. The content of heavy metals in the liquid fertilizer produced also fulfills the requirements of the Peraturan Menteri Pertanian No. 43/Permentan/SR.140/8/2011. The range of the contents of heavy metals contained in liquid fertilizer, sequently, As, Hg, Cd, and Pb are 0.0032 - 0.034 ppm, 0 - 0.0007 ppm, 0.0064 - 0.0546 ppm, and 0.0006 - 0.3497 ppm, where the values this is lower than the standard according to Peraturan Menteri Pertanian No. 43/Permentan/SR.140/8/2011 that is As (max 100 ppm), Hg (max 10 ppm), Cd (max 100 ppm), and Pb (max 500 ppm).

Keywords: wastewater of seaweed processing industry, wastewater galvanized industry, KCl liquid fertilizer, heavy metals.

Topic: Waste to Energy Potential Resources

Link: https://ifory.id/abstract/auNDvfrHYdgh

Conference: The 2nd International Conference on Global Issue for Infrastructure, Environment, and Socio-Economic Development (GIESED 2019)

Plain Format | Corresponding Author (Amanda Pricella Putri)

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