what is biocide treatment

What is biocide?

Biocides Biocides. Besides adding biocides to wells, another approach seems to be promising in modifying the reservoir ecology. Biocides. This chapter deals with biocides for fracturing fluids. The base carrier fluids for fracturing treatments are... Water and effluents. Biocides are added to ...

What are biocide roof treatments?

Mar 04, 2022 · According to the Biocides Directive (98/8/EC), biocidal products are intended to destroy, render harmless, prevent the action of, or otherwise exert a controlling effect on any harmful organism by chemical or biological means.

What are biocides used for in water treatment?

Biocide roof treatments from Pristine Coatings provide the specialist solution you need to protect against any recurrence of moss, algae or lichen on the roof of your home or business premises. Moss is particularly difficult to get rid of entirely from roofs and can cause immense structural damage over time. The onset of patches of moss on your roof causes a build-up of damp on …

How do biocides work to treat pipelines?

A biocide is a chemical treatment that is formulated to effectively control microbial growth. Problems caused by un-controlled microbial growth can range from health hazards, the breakdown of chemicals, the development of biofilms , heat transfer losses, restriction of flow and under deposit corrosion.

What is biocide used for?

Biocides are used to decontaminate the skin of patients and health professionals, any surfaces that could harbour bacteria, and any instruments in contact with patients. Biocides are also used as antiseptics to treat infections in mucous membranes and damaged skin.

Is biocide harmful to humans?

Biocides are used to control harmful and unwanted organisms and microorganisms. However, not only do they kill pathogens, they also kill non-pathogens, meaning they may also be dangerous for humans.May 29, 2017

What is an example of biocide?

Examples of biocidal products include wood preservatives, antifouling paints, disinfectants, preservatives for aqueous products, fungal or anti-microbial products, insecticides, and animal repellents or baits.

What is a biocide cleaner?

A biocide cleaner is any cleaning product that also kills or destroys an organism, such as antibacterial surface cleaner, anti-fungal cleaners or cleaning products designed to prevent algae growth.Oct 23, 2020

Are antibiotics biocides?

1.1 How are biocides defined? Bacteria can be killed or inhibited by different antimicrobial products, namely antibiotics that act against infections in humans or animals and biocides such as disinfectants, antiseptics and preservatives.

Is bleach a biocide?

According to the United States Environmental Protection Agency (EPA), a biocide like chlorine bleach is a substance that should be used to destroy living organisms, but when it comes to killing mold with bleach for bathroom mold removal, the use of a biocide is not recommended for routine practice during mold cleanup ...Mar 29, 2017

What is another name for biocide?

In this page you can discover 11 synonyms, antonyms, idiomatic expressions, and related words for biocide, like: pyrethroids, pyrethroid, fungicidal, fumigant, diazinon, isocyanates, insecticide, fungicide, bactericide, cypermethrin and permethrin.

What is difference between biocide and germicide?

As nouns the difference between germicide and biocide is that germicide is an agent that kills pathogenic organisms; a disinfectant while biocide is any substance that can destroy living organisms.

Why are biocides regulated?

The Biocidal Products Regulation (BPR, Regulation (EU) 528/2012) concerns the placing on the market and use of biocidal products, which are used to protect humans, animals, materials or articles against harmful organisms like pests or bacteria, by the action of the active substances contained in the biocidal product.

Is hydrogen peroxide a biocide?

Hydrogen peroxide is extensively used as a biocide, particularly in applications where its decomposition into non-toxic by-products is important.Apr 24, 2012

Which chemicals are biocides?

There are two basic types of biocides: oxidising and non-oxidising. Oxidising biocides include; chlorine, chlorine dioxide, hydrogen peroxide, bromine and ozone. Non-oxidising biocides include: quaternary ammonium compounds, Bronopol, THPS, DBNPA and Gluteraldehyde.

What is a biocide?

Biocide is a chemical substance or microorganism intended to destroy, deter, render harmless, or exert a controlling effect on any harmful organism by chemical or biological means . Biocides are one of the most commonly used techniques in industry to kill bacteria in the system because of the rapid response. Biocides are divided into two types, oxidizing and nonoxidizing. The oxidizing biocides attack microorganisms by oxidizing (an electron transfer reaction) the cell structure, disrupting nutrients from passing across the cell wall [20]. Common oxidizing biocides used in industry are chlorine, peracetic acid, sodium bromide, and so on. On the other hand, the nonoxidizing biocides interfere with reproduction, stop the respiration process, or break the cell wall [20]. The kill time of the bacteria can take several hours up to a day. Common nonoxidizing biocides used in industry are 1,2-benzisothiazolin-3-on, 5-chloro-2-methyl-4-isothiazolin-3-on, and so on [9,20].

What is the purpose of biocide in water?

Biocides. Biocides (typically chlorine) are used to keep the cooling water system free of fouling organisms such as algae, barnacles, and mussels. From: Encyclopedia of Energy, 2004. Download as PDF. About this page.

What is oxidizing biocide?

Oxidizing biocide causes irreversible cell damage to the bacteria. Put simply, this type of biocide burns the cell. Examples of oxidizing biocides are chlorine, bromine, ozone, and chlorine dioxide. Nonoxidizing biocide alters the cell wall permeability, interfering with biological processes.

What is the best biocide for a recirculatory system?

Biocides are added to cooling water to control the growth of bacteria, fungi and algae in the system. Chlorine, dosed in the form of sodium hypochlorite, is probably the best broad-spectrum biocide and, at residual levels of 0.5 mg/l, chlorine is effective against most bacteria, including Legionella. However, a recirculatory system means that bacteria are exposed continuously to the same chemical conditions, and resistant strains with a natural immunity to the biocide will eventually appear and colonize the system. To prevent this, a regular ‘shot dose’ of an alternative biocide is advisable, and most chemical suppliers have a range of biocides, both broad spectrum and specific, for this purpose.

What is the purpose of biocide in hydraulic fracturing?

Biocide is another important chemical used in hydraulic fracturing. The primary duty of biocide is killing and controlling bacteria. Bacteria can cause instability in viscosity. The concentration of biocide typically varies between 0.1 and 0.3 gpt. Pre job water testing is performed to measure preexisting bacteria present in the water. This test introduces an effective agent with frac source water. A change in the bottle sample directly relates to the bacteria count. Results are then used to determine the biocide concentration (gpt) required for the frac job. The most commonly used biocide product is called glutaraldehyde and this product is typically pumped as a liquid additive with hydraulic fracturing fluid. The basic types of oilfield bacteria are:

Why do we use biocides in inkjet printing?

Biocides and fungicides are used to prevent or inhibit the growth of various microorganisms (Fink, 2014). In ink-jet printing, inks should not be any microorganism generated during a long period of time, while ink-jet ink is stable. This problem occurs particularly in water-based inks.

What is non-leaching biocide?

Biocides irreversibly bound to the antifouling coating surface or net are known as non-leaching biocides (Clarkson and Evans, 1993, 1995 ). While this approach offers advantages in terms of limitation of environmental contamination it has not been successfully pursued, presumably due to technical issues and the broad range of fouling organisms, many of which may not respond to bound biocides. The techniques have been used effectively against bacterial biofouling on biomedical devices ( Hume et al., 2004; Zhu et al., 2008) and this is an area of technical promise with the move towards legislation restricting antifouling technologies to non-release mechanisms.

What is the combined action of all the biocides in a product?

Ideally, the combined action of all the biocides in a product should be greater than the sum of the individual actions (synergy). Biocidal products contain many different molecules and they can all affect how well the product works. Moreover, some of the components that are added to many household products for a variety ...

Is biocides safe?

However, even if the products themselves are safe, the fact that they are used in huge volumes could have safety implications. If biocides kill all the bacteria that are reasonably easy to eradicate, the only bacteria left are resistant strains and these are free to grow with no competition from other bacterial populations.

Can bacteria survive biocide?

Resistant bacteria can survive biocide concentrations that would kill others. Although antimicrobial products are used in concentrations that are usually sufficient to inhibit or kill the bacteria treated, some strains of bacteria are able to survive and even grow at these concentrations; they are said to be “ resistant ”.

Can bacteria be killed?

Bacteria can be killed or inhibited by different antimicrobial products, namely antibiotics that act against infections in humans or animals and biocides such as disinfectants , antiseptics and preservatives .

Is biocide used in human health?

The use of antibiotics in human and animal health care is monitored regularly but the same is not true for biocide use. Although most biocides are used in large quantities and the volumes produced are many orders of magnitude higher than those of antibiotics, there is no reliable information on the total amounts used in Europe.

What are biocides used for?

Biocides are used to suppress harmful organisms that can cause damage to natural or manufactured materials. These harmful organisms include pests and germs. Examples of biocidal products are insect repellents, disinfectants and industrial chemicals like anti-fouling paints for ships and material preservatives. Biocidal substances like chlorine are used as a short-life biocide in industrial water treatment and also as a disinfectant in swimming pools. The most important application area of biocides, in quantitative terms, is industrial and public water treatment.

What is biocide in biology?

A biocide is a type of chemical or microorganism that can deter, render harmless or exert a controlling effect on harmful organisms by chemical or biological means. They are industrially important as disinfectants, oxidizing agents and preservatives.

Why are biocides added to water?

Biocides can be added to materials (typically liquids) to protect them against biological infestation and growth. For example, certain types of quaternary ammonium compounds (quats) are added to pool water or industrial water systems to act as an algicide, protecting the water from infestation and growth of algae.

What is biocide treatment?

A biocide is a chemical treatment that is formulated to effectively control microbial growth. Problems caused by un-controlled microbial growth can range from health hazards, the breakdown of chemicals, the development of biofilms , heat transfer losses, restriction of flow and under deposit corrosion. It is therefore critical that the correct ...

What are the two types of biocides?

There are two basic types of biocides: oxidising and non-oxidising. Oxidising biocides include; chlorine, chlorine dioxide, hydrogen peroxide, bromine and ozone. Non-oxidising biocides include: quaternary ammonium compounds, Bronopol, THPS, DBNPA and Gluteraldehyde. When selecting a biocide for use in a system whether as a biocidal flush biocide, ...

What is chlorine dioxide used for?

Chlorine dioxide is an excellent broad spectrum oxidising biocide which is It is effective at low concentrations and is used in a large number of applications such as disinfection, sanitisation and water treatment.

What factors are considered when selecting a biocide for use in a system?

When selecting a biocide for use in a system whether as a biocidal flush biocide, maintenance dose biocide or a shock dose biocide a number of factors need to be considered including: contact time, concentration, temperature, pH, compatability, efficacy against microbes present in the system and cost effectiveness.

What happens if you use a non-oxidizing biocide?

Non-oxidising biocide. Constant use of just a single non oxidising biocide, may result in establishment of a resistant flora in the system being treated. This will then result in microbiological fouling of the water system.

What is a rapid acting broad spectrum biocide?

A rapid acting broad spectrum biocide. Proven efficacy against a wide range of bacteria including Legionella spp. Bacillus spp. Staphylococcus aureus and various Pseudomonas strains as well as against a number of fungi including Aspergillis niger and yeasts such as Candida krusei and Saccharomyces bailii.

Do biodispersants kill organisms?

Biodispersants do not kill organisms but they do break up any deposits of microorganisms allowing the biocides to attack the organisms more effectively. They also inhibit the attachment of microorganisms to metal surfaces.

Is timber a biocide?

As a plant, timber is vulnerable to certain environmental factors and, depending on its natural durability, the application of a timber treatment containing active “biocide” substances is the only solution to authorise its use. Indeed, timber building materials must have a sufficient performance level in order to guarantee the occupants of buildings a durable, strong and healthy timber structure.

Is biocide effective in timber treatment?

Currently, new technology has made it possible for chemical formulation to achieve higher levels of performance and relevance thanks to a highly targeted choice of biocide substances that are effective in timber treatment products at very small doses.

What are biocides used for?

Biocides effectively treat bacterial metabolisms , such as acids, scales, slime, and poisonous gases. Biocides are also useful to protect the top structure from rusting. Biocides work effectively to treat pipelines from bacterial growth.

How do biocides work?

Biocides work effectively to reduce the growth of common types of bacteria. Sulfate-Reducing Bacteria – The common bacteria is hydrogen sulfide that can cause corrosion, reservoir souring, disposition of scales, and risks for one’s health.

Why are biocides used in oil and gas?

Biocides are used in the offshore oil and gas industry to maximize production by protecting assets through the inhibition of microbial induced biofilm and corrosion.

Why is a wellbore used?

It is used in small amounts to control the growth of bacteria and other harmful organisms in the wellbore. Protection of equipment and an increase in the operational efficiency by controlling microbially induced corrosion are necessary.

Overview

A biocide is defined in the European legislation as a chemical substance or microorganism intended to destroy, deter, render harmless, or exert a controlling effect on any harmful organism. The US Environmental Protection Agency(EPA) uses a slightly different definition for biocides as "a diverse group of poisonous substances including preservatives, insecticides, disinfectants, and pesticides used for the control of organisms that are harmful to human or animal health or that …

Uses

Hazards and environmental risks

Classification

Current market

Legislation

Risk assessment

See also