Spent caustic - Wikipedia
Spent caustic is a waste industrial caustic solution that has become exhausted and is no longer useful (or spent). Spent caustics are made of sodium hydroxide or potassium hydroxide, water, and contaminants.
SULFURIC ACID, SPENT | CAMEO Chemicals | NOAA
SULFURIC ACID, SPENT is diluted and partly neutralized sulfuric acid recovered from industrial use. Likely to contain multiple impurities. Reacts an an acid and as a weak oxidizing agent. Chars wood and most other organic matter, but is unlikely to cause a fire. Zinc iodide reacts violently with H2SO4. (Pascal, 1962, Vol. 5, 168).
Spent Caustic Solution - an overview | ScienceDirect Topics
2010年1月5日 · The high level of dissolved sodium chloride in spent caustic solution and formation of aeration cells due to deposition of suspended solids accelerated the pitting corrosion. The non-feeding line pipe (NFL300) also promoted the deposition due to reduced flow velocity between two junctions.
WHAT IS A SPENT SOLVENT AND WHY IS IT VALUABLE?
2017年7月12日 · A spent solvent is a type of spent material, which is defined by the EPA as “any material that has been used and as a result of contamination can no longer serve the purpose for which it...
Spent caustic treatment and reuse - DigitalRefining
Spent caustics. In refinery and midstream processes, caustic, an aqueous sodium hydroxide solution, removes impurities such as environmentally undesirable sulphur compounds and carbon dioxide (CO₂) from various liquid streams.
Comparison of different strategies to treat challenging refinery spent ...
2020年12月15日 · Spent caustic is a challenge in refineries worldwide due to its hazardous nature, especially the kerosene Merox spent caustic, which may account for more than 90% of the total contamination generated by refineries in terms of oil and grease [1]. Among refineries, the characteristics of spent caustics may vary greatly.
Characteristics and Treatment of Wastewater from the Mercaptan …
2020年4月3日 · Spent caustic (SC) is the name of the solution obtained once the mercaptans react with NaOH. Without adequate treatment, SC can cause environmental problems. The main focus of this comprehensive review is to expose different techniques released and mentioned in the literature, to process the SC.
basic methods for treating spent caustic solutions are wet air oxidation (WAO) and direct acid neutralization (DAN), respectively. In this paper, first spent caustics and then treatment methods were discussed in detail. 1.1 Spent Caustic For ease of discussion, spent caustics will be classified into three general categories: Sulfidic,
What is the Spent Caustic? Spent caustic is a waste product generated by chemical and petroleum sweetening processes. Spent caustic is produced during the production of high quality: Ethylene. LPG. Gasoline. Diesel. Kerosene. Natural Gas. Typical Spent Caustic Constituents. Classification. Hazards. Why is spent caustic difficult to dispose of?
Spent Caustic Handling | Recycle and Reuse - Merichem
Merichem ® is the leader in spent caustic management via recycling and beneficial reuse. With deep expertise and proven end-to-end solutions, we can reduce waste disposal and reporting, remove spent caustics reliably and reuse them to improve environmental sustainability.