Journal of Educational Engineering and Environment

Penilaian Tingkat Kerentanan Air Tanah terhadap Pencemaran dengan Menggunakan Metode DRASTIC di Kecamatan Jogoroto Kabupaten Jombang

Em Rafif Sultan Alfaridzi, Hari Siswoyo, Rini Wahyu Sayekti — Sun, 29 Dec 2024 04:16:13 +0000

There are more than 70 small tofu factories in the Jogoroto District, which generate a large amount of liquid waste
from tofu processing that has not been treated optimally. This certainly creates a potential for the waste to contaminate
groundwater in the Jogoroto District. The assessment of groundwater vulnerability to contamination can be conducted using
the DRASTIC method, which involves 7 parameters.In this study, there are 24 dug well points spread across the entire Jogoroto
District, which were monitored periodically over a 5-month period, from July 2023 to November 2023. Based on the resulting
groundwater vulnerability distribution map, laboratory tests on groundwater quality were carried out, using parameters from
the Minister of Health Regulation No. 2 of 2023 concerning clean water and the Minister of Environment Regulation No. 5 of
2014 on effluent quality standards.The study found that the DRASTIC index value during the research period ranged from 140
to 212, with three levels of vulnerability: moderate, high, and very high. The high vulnerability level dominated the study area.
However, based on the validation results, it was found that the groundwater quality in the Jogoroto District, Jombang Regency,
is not contaminated.

Light Sensor Based Automatic Lamp Simulation Using Proteus

Ibnu Saputro — Fri, 14 Feb 2025 00:00:00 +0000

Automatic lights with light sensors are lights that can turn on and off automatically without using a switch. The light sensor in automatic lights works by converting light quantities into electrical quantities. The working principle is that when the sensor detects the presence of light, the light will turn off, and vice versa. Here are some of the benefits of using automatic lights with light sensors: Save energy and reduce electricity bills, Increase comfort, Reduce the need to adjust lighting manually, Save labor and time. Light sensors work by utilizing the principles of electric current and resistance. When light hits the sensor, the resistance will increase or decrease according to its position, thereby regulating the current

Motor Speed Control Using IC Timer 555 Based on Proteus Software Simulation

Suherman, Ulfa Dina Zakia — Fri, 14 Feb 2025 00:00:00 +0000

This simulation aims to determine the effect of the percentage of potential resistance on the waves produced from a dc motor circuit using IC 555 as a wave generator. The simulation results show that the smaller the percentage of potential resistance, the faster the RPM on the motor with the greater the voltage and amperage on the motor. The resulting wave has a very strong influence on the potential resistance, the smaller the resistance, the longer the wave produced by the IC 555 will be and will have a relatively short density. Analysis shows that changes in resistance percentage affect the voltage, amperes, RPM and waves on the motor

Prototype of Integrated Power Meter & Automatic Power Factor Controller for Optimizing Electric Power Quality

Bagus Pramono — Fri, 14 Feb 2025 08:07:17 +0000

The increasing focus on energy efficiency highlights the need for improving electrical systems, particularly regarding power factor optimization. This study develops a prototype Integrated Power Meter & Automatic Power Factor Controller using an Arduino Uno microcontroller. The system measures electrical parameters, including reactive power, voltage, and current, in real-time. It automatically adjusts power factor by activating capacitors based on system requirements. Testing reveals significant improvements, with power factor enhancement by over 20% and reduced reactive power by up to 80%. The prototype demonstrates potential for application in industrial settings, offering an effective solution for energy management.

Interaction Pattern of Groundwater and Surface Water of Beji River in Malang Regency

Cindi Fatikasari, Hari Siswoyo, Dasapta Erwin Irawan — Tue, 25 Feb 2025 02:36:10 +0000

Activities in the Beji River area such as bathing, washing, toilets, industry, and agriculture greatly affect the decline
in the quality of the river's. Poor river surface water quality will affect the quality of groundwater in the area around the river.
Groundwater and river surface water have a close relationship with each other, especially in areas around riverbanks. Therefore,
this study was conducted to identify the interaction between ground air and river surface air at the research location. Based on
the description of the flow pattern identified as a whole, the type of interaction at the research location is in the form of gain
stream. The relationship between the two causes similar characteristics as evidenced by the occurrence of similar patterns in the
time series analysis. These similarity characteristics are divided into 2 clusters, namely cluster 1 is influenced by pH and air
temperature while cluster 2 is influenced by TDS and DHL water with correlation values ranging from -0.074 to 0.972. Based on
the PCA analysis, the eigenvalue values obtained range from 1.042 to 1.482 with a cumulative contribution of variables of 79.58%.
The hydrochemistry of air in groundwater and river surface water also shows that there are similarities in the chemical properties
of air, namely that it has non-dominant types of cations and anions.