Gulf Coast Environmental Systems

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Dimethyl Sulfide

What is Dimethyl Sulfide?Dimethyl sulfide

Dimethyl sulfide (DMS), also known as methylthiomethane, is an organosulfur compound. It is a methyl sulfide, in which the sulfur atom is substituted by two methyl groups, with the chemical formula of (CH3)2S. It is a highly flammable straw-colored liquid, with a boiling point of 37 degrees Celsius, or 99 degrees Fahrenheit. This is a compound that is easily recognized by its foul odor, that is often described as “cabbage like”. Unlike many other organosulfur compounds, this disagreeable odor is present in even low concentrations of DMS. Dimethyl sulfide is the product of dimethylsulfoniopropionate (DMSP) breakdown, and is also the result of bacterial metabolism of methanethiol.

Dimethyl Sulfide

Where is Dimethyl Sulfide Found? [Read more…]

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Pollution Control – Expense, or Profit?

POLLUTION CONTROL CASE STUDYGulf Coast Environmental Systems
WET SCRUBBER CHEMICAL INJECTION & LIQUOR CONCENTRATOR | AUGUST 2018

LIGHTING COMPANY
Employees: 9000
Sector: Industrials
Industry: Electrical Equipment
Sub-Industry: Commercial & Residential Building Equipment & Systems
Project Type: Equipment Proposal

A fortune 500 lighting company that manufactures LEDs and lighting products. This Company provides solutions for automotive lighting, computer displays, LCD televisions, and other applications.

EXECUTIVE SUMMARY:
To determine the feasibility and estimates to convert the existing wet scrubber units to chemical injection for creation of a sellable byproduct of ammonia sulfate.

PROJECT OVERVIEW:
Gulf Coast Environmental Systems was asked to perform a feasibility project by a lighting company that manufactures light-emitting diode (LED) components. With a large amount of ammonia and hydrogen being released from the reactors during the process performed at their facility, they would need specialized equipment. The hydrogen is treated in an Incineration system (NOx created) with the remaining ammonia being removed using water only in the packed tower scrubbers. The blowdown (Ammonium Hydroxide) from the scrubbers is treated in an Acid Neutralization Systems (ANS) (converts to Ammonium Sulfate) before being discharged into the wastewater system. Waste surcharges apply based on the ammonium (NH4+) content in the wastewater.

The goal of this feasibility study was to determine the required steps and costs involved in using Sulfuric Acid in the scrubbers to get a controlled blowdown liquor that could create a viable revenue stream from an existing liability waste procedure. In addition, the need for the ANS system is hopefully eliminated along with the additional costs of discharging the uncontrolled wastewater. [Read more…]

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Hydrogen Sulfide – H2S

What is Hydrogen Sulfide?

Hydrogen sulfide is a chemical compound with the chemical formula H2S. This means it is made of two hydrogen atoms, and one sulfide. It is a colorless gas with an obvious identifying characteristic; it has a distinct rotten egg odor. Slightly denser than air, it can be incredibly explosive. When burning with oxygen, hydrogen sulfide burns blue, to form sulfur dioxide, and water. It is somewhat soluble in water, and acts as a weak acid. [Read more…]

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Methyl Mercaptan

What is Methyl Mercaptan?

methyl mercaptan

Methyl Mercaptan, also known as Methanethiol, is a volatile organic compound known as an organosulfur, because it contains sulfur. Methyl mercaptan is a member of a series of compounds, in which there can be chains of up to 20 carbon-atoms attached to sulfur. The chemical formula for methanethiol is CH3SH; it is classified as a thiol.  It is colorless, highly flammable, and has a strong rotten-cabbage-like odor. It is a colorless, low-boiling liquid, that is denser than water. When inhaled, Methyl Mercaptan is very toxic, and the dangerous gas is often overlooked when in low concentrations. It can undergo steam reforming to hydrogen-rich gas over cerium oxide-coated rhodium or aluminum oxide catalyst via the solid-gas reaction, under certain operating conditions. This process has potential use in toxic-waste treatment, such as removal of methanethiol present in industrial-waste off-gas. Because it is derived from decaying organic matter, Methyl Mercaptan is a weak acid, and is reactive with dissolved metals, in aqueous solutions. [Read more…]

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Is There Money Hiding in Your Landfill?

What gases are released by landfills?

Landfills consist of a complex mix of gases and VOCs, and are a source of major pollution, and potential revenue… which we will address later in this article. Dangerous gases like methane(CH4), carbon dioxide(CO2), sulfides (SOx), and ammonia, are created by the decomposition and evaporation of organic compounds, as well as chemical reactions between waste components. Methane and carbon dioxide are the most prevalent, making up between 90 and 98% of all gases and VOCs released. Methane from Landfills

Why are these chemicals a concern?

These gases and VOCs are considered greenhouse gases, and play a huge role in global warming. According to the EPA, in the United States, landfills are the third most prevalent source of methane, and other greenhouse gases. Another risk when dealing with methane is the flammability of the gas, which is incredibly high. When condensed into a small space, methane is considered an explosive, and should be handled with extreme caution. Landfill gas explosions are not uncommon.

In addition to pollution and the risk of exploding, these VOCs pose a serious risk to human health. They have been linked to eye, throat and lung irritation, nausea, headache, nasal blockage, sleeping difficulties, weight loss, chest pain, and even asthma. Some recent studies indicate a connection between air pollution, and Alzheimer’s, diabetes, and slow fetal development. [Read more…]

Company Profile

Gulf Coast Environmental Systems (GCES) is your custom solutions provider for pollution control systems, industrial ovens, systems engineering and field support worldwide. Our unique approach is to analyze your process stream and business objectives and propose an ideal solution or range of options to help you optimize these objectives. GCES is a one-stop shop: we provide engineering services, manufacturing, installation, commissioning and ongoing support. With our broad base of expertise and large installed global base, we are well-positioned to solve your pollution control issues.

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