Oxidation Pond – Definition, Mechanisms

Oxidation Pond - Definition, Mechanisms

What is Oxidation Pond? Mechanism of Waste Treatment Understanding the following processes will facilitate comprehension of the oxidation pond’s mechanism or operation. Based on the two mechanisms described above, it is evident that algae and bacteria fulfil one other’s needs. The bacteria oxidise the biodegradable organics with the oxygen generated by the algae. The bacterial … Read more

Biological Oxygen Demand (BOD) – Definition, Importance, Measurement

Biological Oxygen Demand (BOD) Definition, Importance, Measurement

Biological oxygen demand refers to the amount of oxygen required by bacteria and other microorganisms to decompose organic matter under aerobic (oxygen present) conditions at a certain temperature (BOD). The greater the concentration of organic contaminants in the water, the greater the oxygen demand of the bacteria. Consequently, the level of contamination in a body … Read more

Chemical Oxygen Demand (COD) – Definition, Measurement, Uses

Chemical Oxygen Demand (COD) - Definition, Measurement, Uses

Chemical oxygen demand, or COD, indicates the amount of oxygen that can be used by processes in a measured solution. It is often expressed as the mass of oxygen utilised per unit of solution volume, or milligrammes per litre (mg/L) in SI units. The most common application of COD is determining the quantity of oxidizable … Read more

Degradation of Hydrocarbons (oil spills)

Degradation of Hydrocarbons (oil spills)

Types of Hydrocarbon Crude petroleum HCs can be categorised as alkanes, cycloalkanes, aromatics, polycyclic aromatics, asphaltines, and resins. Alkanes Cycloalkanes  Aromatic HCs Polycyclic aromatic HC Asphaltines and resins Effects of Hydrocarbon The ecological and/or economic effects of direct or indirect exposure of live creatures to hydrocarbon molecules can vary. Principles of Bioremediation Oil Spill Cleaning … Read more

Liquid Waste Management

Liquid Waste Management

Fluid wastes consisting of sewage and residential wastewater, or treated water or other liquids, generated by industrial operations, particularly in the pulp and paper industry, the food processing industry, and the chemical manufacturing industry. What is Liquid Waste Management? Characteristics of Sewage/Liquid Waste In sewage, the death of oxygen-dependent organisms such as aerobic microbes, plants, … Read more

Sewage Treatment – Wastewater Treatment Procedure

Sewage Treatment - Wastewater Treatment Procedure

Wastewater treatment or Sewage Treatment  Characteristics of Wastewater  Chemical Characteristics  Biochemical Oxygen Demand (BOD) Microbiological Character Wastewater Treatment Process Diverse wastewater treatment technologies exist. We shall explain the treatment methods as they pertain to two distinct circumstances: (1) a single home or unit structure, and (2) a community or municipality. 1. Single Dwelling Unit Anaerobic … Read more

Degradation of Pesticides – Types, Mechanisms

Degradation of Pesticides - Types, Mechanisms

What are Pesticides? any substance or mixture of substances intended for preventing, destroying, or controlling any pest, including vectors of human or animal disease, unwanted species of plants or animals, causing harm during or otherwise interfering with the production, processing, storage, transport, or marketing of food, agricultural commodities, wood and wood products or animal feedstuffs; … Read more

Phytoremediation – Definition, Types, Mechanisms

Phytoremediation - Definition, Types, Mechanisms

What is Phytoremediation? Types of Phytoremediation There are three varieties of phytoremediation: 1. In situ phytoremediation Advantages of In situ phytoremediation Disadvantages of In situ phytoremediation 2. In-vivo phytoremediation with relocated contaminants 3. In vitro phytoremediation Processes Of Phytoremediation Phytoremediation is based on certain natural processes carried out by plants, such as:  Mechanisms of phytoremediation … Read more

Plant Growth Promoting Rhizobacteria (PGPR)

 Plant Growth Promoting Rhizobacteria (PGPR)

What is Plant Growth Promoting Rhizobacteria (PGPR)? Mechanism of action of Plant Growth Promoting Rhizobacteria (PGPR) The synthesis of different chemicals alters the entire microbial community in the rhizosphere niche to facilitate PGPR-mediated plant growth promotion. In general, PGPR stimulates plant growth either directly by enabling resource acquisition (nitrogen, phosphorus, and critical minerals) or indirectly … Read more

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