Download Environmental Pollution Control Microbiology: A Fifty-Year by Ross E. McKinney PDF

By Ross E. McKinney

This reference illustrates the applying of primary ideas in microbiology to supply a valid foundation for the layout and operation of varied organic structures utilized in fixing a variety of environmental demanding situations within the air, water, and soil—opening with an exam of total metabolism and the ensuing development of micro organism, fungi, algae, protozoa, rotifers, and different microorganisms and progressing to combined microbial platforms the place numerous teams of microorganisms compete, in addition to, praise one another within the processing of a myriad of biodegradable toxins in our surroundings.

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CHEMICAL COMPOSITION Bacteria are approximately 70% to 80% water with 20% to 30% dry matter. The dry matter in bacteria is both organic and inorganic. The percentages of organic 26 ENVIRONMENTAL POLLUTION CONTROL MICROBIOLOGY matter and inorganic matter depend upon the chemical characteristics of the media in which the bacteria are grown. Media that contain high concentrations of inorganic salts will produce bacteria with higher concentrations of inorganic compounds in the cell mass than media containing low concentrations of inorganic compounds.

Using the data of Mayberry, Prochazka and Payne, the following results are presented for C, H, O and N. 22 3. Using the data of Clark, the following results are presented for C, H, O, and N. 19 Chemical formula of cell protoplasm = CHt 8O05iN019 As indicated in the calculations, the C, H, O, N data provide a reasonable evaluation of the organic fraction of the bacteria protoplasm. Environmental microbiologists have tended to favor the formula using N as unity; while bacteriologists have favored the formula using C as unity.

7%. 2% ash. Clark measured all of the chemical parameters separately. These data confirmed that carbon, hydrogen, oxygen and nitrogen are the main components of the organic fraction of bacteria. As previously indicated, the ash or inorganic fraction of the cell mass varies with the media used for growth. Some bacteria require high inorganic salt concentrations for good growth. The salt-loving bacteria, Halobacteria, will definitely have higher ash fractions than indicated for normal bacteria. Comparative results for bacteria protoplasm are obtained by examining the carbon, hydrogen, oxygen and nitrogen by themselves.

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