Question :- answer to the question is biosparging and Bioventing.
In situ bioremediation :- is the application of a biological treatment to clean up hazardous compounds present in the environment. The optimization and control of microbial transformations of organic contaminants requires the integration of many scientific and engineering disciplines. Some of the in situ bioremediation practices have been discussed below.
Biosparging: This involves the injection of air under pressure below the water table to increase ground water oxygen concentrations and to enhance the rate of biological degradation of contaminants by naturally occurring bacteria. Biosparging increases the mixing in the saturated zone and thereby increases the contact between soil and ground water. The ease and low cost of installing small-diameter air injection points allow considerable flexibility in the design and construction of the system.
Bioventing: Bioventing is a promising new technology that stimulates the natural in situ biodegradation of any aerobically degradable compounds by providing oxygen to the existing soil microorganisms. It uses low air flow rates to provide only enough oxygen to sustain microbial activity. Oxygen is most commonly supplied through direct air injection into residual contamination in soil by means of wells. Henceforth, the adsorbed fuel residuals are biodegraded and volatile compounds are also biodegraded as vapors move slowly through biologically active soil.
Bio-sparging is a technique in which air is injected beneat
Which of the following bioremediation strategies focuses most on the action of microbes to digest or...
Which of the following statements about aerobic bioremediation strategies is true? They are used on heavily reduced substrates. They are used on heavily oxidized substrates. They are used commonly on heavy metal contaminants.
For most folks, their knowledge of the importance of microbes is limited to just those microbes that cause slokness. However, you know better? Which of the following describes a true critical feature of microbe biology illustrating their importance? they wo important food source for aquatico some produce oxygen some can fix atmospheric nitrogen which is important for plant growth they are critical for the process of decay. they are used in the food and beverage production industry they influence our...
Phosphate is required in various microbial metabolisms. Which of the following sources are microbes most likely to obtain phosphate from? O inorganic compounds o organic compounds O neither organic nor inorganic compounds O both organic and inorganic compounds
Which of the following strategies are used by some microbes to evade complement” Interfere with complement activation by the classical pathway Produce proteins that bind and inactivate complement proteins Produce proteases that destroy complement proteins Produce proteins that mimic or bind complement regulatory proteins All of the above are correct. With respect to the T cell receptor, TCR: One gene encodes the ɑ subunit, a different gene encodes the ? subunit Four genes are involved encoding both αβ and ϒδ...
Which of the following investment strategies is most consistent with choosing high dividend yield stocks? Select one a Value b. Blended O c. Momentum
Which of the following actions is a dependent nursing action for most nurses? 1) positioning the client 2) starting an IV line 3) assisting a client with ambulation O4) discharge planning
3. wmien Elaine focuses on managing relationships with members of her department, she's demonstrating which of the following managerial mindsets? 4. Reflective B. Collaborative C. Analytical D. Action
Which of the following statements about the demand chain are correct? a. The demand chain focuses on facilities while the supply chain focuses on markets b. The demand chain focuses only on strategic supply chain processes c. The demand chain tends to push products based on limited knowledge d. The demand chain uses key consumer and market information that is essential to the strategic planning process A spend analysis includes all of the following characteristics except: a. Identifies which vendors...
idTek is a pharmaceutical company. Which of the following strategies will the company most likely employ ftr decides to adopt a concentrated targeting strategy? e It will manufacture and sell strong as well as mild painkillers it will exclusively manufacture and sell a drug to treat acromegaly, a rare hormonal disorder. It will set up discount drugstores chains in developing countries. It will reward doctors who prescribe its drugs.
31. Which of the following is most reactive towards Grignard's reagent PhMgBr? Keon Aloyee - pet i kety 32. Which of the following is most reactive towards Grignard's reagent PhMgBr? 53. Which of the following is least reactive towards Grignard's reagent PhMgBr?