Sludge

{
  "id": "MLC-T-ENE-002110",
  "term": "Sludge",
  "field": "Energy",
  "definition": "A dense, slushy, liquid-to-semifluid product that accumulates as an end result of an industrial or technological process designed to purify a substance. Industrial sludges are produced from the processing of energy-related raw materials, chemical products, water, mined ores, sewerage, and other natural and man-made products. Sludges can also form from natural processes, such as the run off produced by rain fall, and accumulate on the bottom of bogs, streams, lakes, and tidelands.",
  "references": [
    "EIA Glossary"
  ],
  "url": "https://mlchart.com/terminology/energy/sludge/"
}