Monitoring System for Hazardous Gas in Landfill Site Based on Internet of Things

The landfill is a place where waste reaches the last stage in its management since it began to arise source, collection, transportation, processing, and disposal. Muara Fajar one of landfills Pekanbaru City whose garbage increase exceeds capacity storage land so that can produce 800 tons per day dry weather 1000 rainy weather. problem caused by air pollution due process decomposing organic matter anaerobically which has potential cause unpleasant odors health problems. With this problem, system was built monitor detect hazardous gases landfill, namely H2S gas using MQ-136 sensors, CH4 MQ-4 CO2 NH3 MQ-135 sensors. This implemented with IoT protocol, MQTT Broker receive send monitoring data Website notifications from telegram web application. Based on testing value ppm Gas danger status 1000-4000 ppm, 10-400 included be careful 0.03 normal because levels below 10000