Archaea-involved technology is essential for wastewater treatment by integrating energy production and resource recovery into a process for producing clean water. Archaea play important roles in converting pollutants into environmentally friendly materials.
Full Answer
Why are archaea important in wastewater treatment?
Archaea are important in wastewater treatment and they are responsible for methane production, carbon mineralization, nitrification, and denitrification. Besides, newly discovered denitrifying anaerobic methane oxidation (DAMO) process, through which methane is oxidized anaerobically, also requires archaea involvement.
How can haloarchaea be used in wastewater treatment?
Still, haloarchaea are adapted to saline environment and can treat saline wastewater efficiently. To date, many archaea in wastewater treatment are identified and characterized, and steady state is achieved in archaea-based wastewater treatment process. This benefits pollutant removal with good potential for decreasing chemical and energy use.
How many papers are in the Archaea special issue?
Twelve papers, including both reviews and research articles, are selected in this Special Issue, covering the topics about the distributions and contributions of Archaea in wetlands, oilfield soil, and wastewater-treating bioreactors. Three review articles are highlighted in this Special Issue.
What are the Three Kingdoms of archaea?
Three kingdoms of Archaea (Table 10.8) are now recognized, and with the exception of the methane producers (methanogens), most of the known species are extremo-philes (high temperature, high or low pH, and/or high salinity). They include both aerobes and anaerobes, chemoorganotrophs and chemolithotrophs, heterotrophs and auto-trophs.
What archaea is used in wastewater treatment?
Still, haloarchaea are adapted to saline environment and can treat saline wastewater efficiently. To date, many archaea in wastewater treatment are identified and characterized, and steady state is achieved in archaea-based wastewater treatment process.
What type of archaea would survive in sewage sludge?
Methanobacterium, Methanosaeta and Methanosarcina are the prevalent archaeal genera in diverse types of industrial wastewaters (such as in breweries, wineries or dairies). Also, many methanogens likely enter the sludge with a stream of recycled water from an anaerobic reactor.
What bacteria is used in sewage treatment?
Anaerobic bacteria are used in wastewater treatment on a normal basis. The main role of these bacteria in sewage treatment is to reduce the volume of sludge and produce methane gas from it.
What does primary sewage treatment involve?
Primary treatment of wastewater involves sedimentation of solid waste within the water. This is done after filtering out larger contaminants within the water. Wastewater is passed through several tanks and filters that separate water from contaminants.
How do archaea produce methane?
Methanogenic archaea generate methane as a by-product of anaerobic respiration using CO2, C1 compounds (like methanol or methylated amines), or acetate as terminal electron acceptors. Methanogens are an untapped resource for biotechnological advances related to methane production as well as methane consumption.
What are 3 examples of archaea?
Examples of archaebacteria include halophiles (microorganisms that may inhabit extremely salty environments), methanogens (microorganisms that produce methane), and thermophiles (microorganisms that can thrive extremely hot environments).
Which bacteria is commonly found in anaerobic sludge during sewage treatment?
Solution : Anaerobic bacteria (Methano bacterium/Methanogenic bacteria).
How are microorganisms used in sewage management?
Microorganisms are the workhorses of wastewater treatment systems and anaerobic digesters, where they are responsible for removal of pollutants and pathogens, recovery of nutrients and energy, and producing clean water.
Which of the following is used in primary treatment of waste water?
(i) In Primary treatment First, floating debris of waste is removed by sequence filters. (ii) The Soil and small pebbles are removed by sedimentation in settling tanks. (iii)The sediment is called primary sludge and supernatant is effluent.
What does primary sewage treatment involve quizlet?
Primary sewage treatment involves basic processes to remove suspended solid waste and reduce its biochemical oxygen demand (BOD) - the amount of oxygen microorganisms must consume to breakdown the organic material present in the wastewater.
What is primary treatment?
Listen to pronunciation. (PRY-mayr-ee TREET-ment) The first treatment given for a disease. It is often part of a standard set of treatments, such as surgery followed by chemotherapy and radiation.
What is Archaea based technology?
Archaea-based technology is essential for wastewater treatment by integrating energy production and resource recovery into producing clean water.
What are the issues with archaea?
However, compared with bacteria in wastewater treatment, many issues on archaea such as community structure, metabolism mechanism, and the like are still not well known. A comprehensive understanding about identity, physiology, ecology, and population dynamics of archaea will improve wastewater treatment efficiency and process stability.
Why is wastewater treatment important?
Therefore, wastewater treatment is quite imperative for sustainable development and is critical for ecosystem and human health. Typically, wastewater is purified through microbial biotechnology, where carbon, nitrogen, and phosphorus are removed. Archaea are important in wastewater treatment and they are responsible for methane production, ...
Can haloarchaea treat saline?
Still, haloarchaea are adapted to saline environment and can treat saline wastewater efficiently. To date, many archaea in wastewater treatment are identified and characterized, and steady state is achieved in archaea-based wastewater treatment process. This benefits pollutant removal with good potential for decreasing chemical and energy use.
Is it necessary to study archaea in wastewater treatment?
It is quite necessary to further study archaea in wastewater treatment. Such investigations can not only optimize current wastewater treatment process but also innovate emerging technology. This special issue focuses on archaea in wastewater treatment.