Triyono, Sugeng (2019) CONTROLLED ELECTRICAL CONDUCTIVITY (EC) OF TOFU WASTEWATER AS A HYDROPONIC NUTRITION. Procedia Environmental Science, Engineering and Management, Rumania, SNSIM, Procedia Environmental Science, Engineering and Management, Rumania.

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Abstract

Tofu wastewater has the potential to become an organic fertilizer because of its protein content. The utilization of tofu wastewater into organic fertilizer is an effort to resolve the environmental pollution issue. This study used tofu wastewater obtained from local tofu producer in the city of Bandar Lampung, Indonesia. Tofu wastewater is diluted using clean water in a ratio of 1:5, 1:10, and 1:20. Electrical conductivity (EC) settings are carried out using an automatic control system based on a self�assembled microcontroller. Controlling the EC will be beneficial because a hydroponic system depends on the minerals and ions content of the nutrient solution. EC can deliver electric ions from the nutrient solution to the plant roots. The EC value would affect the photosynthesis speed rate, enzyme activities, and ion absorption of the plant roots. This study applies the design of an automatic control system based on a microcontroller that controls the EC of tofu wastewater to become suitable for plant growth in a hydroponic system. The results showed that the best dilution of distilled water and tofu wastewater for Mustard greens (Brassica Juncea L.) in a hydroponic system are using a 1:20 ratio with an EC value of 0.57 mS/cm.

Item Type:	Other
Uncontrolled Keywords:	Electrical conductivity, microcontroller, tofu wastewater
Subjects:	S Agriculture > S Agriculture (General)
Divisions:	Fakultas Pertanian (FP) > Prodi Teknik Pertanian
Depositing User:	DR.Ir.M.Sc Sugeng Triyono
Date Deposited:	21 Jun 2021 01:08
Last Modified:	21 Jun 2021 01:08
URI:	http://repository.lppm.unila.ac.id/id/eprint/32716

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