Anaerobic method of solid waste disposal is-
**Question:** Anaerobic method of solid waste disposal is-
A. Landfill
B. Incineration
C. Composting
D. Wetting and burying
**Correct Answer:** A. Landfill
**Core Concept:** Anaerobic decomposition is a biological process that occurs in the absence of oxygen. In the context of waste disposal, it primarily refers to solid waste management techniques that do not involve direct combustion or exposure to air.
**Why the Correct Answer is Right:** Anaerobic decomposition is a natural process that occurs in the environment, particularly in landfills where waste accumulates. In these environments, microorganisms break down organic waste materials, converting them into biogas, which primarily consists of methane and carbon dioxide. Landfill is the correct option because it involves the accumulation of waste in a designated area where anaerobic decomposition takes place.
**Why Each Wrong Option is Incorrect:**
B. Incineration (Option B) is the process of burning waste to produce energy, which is an aerobic process as it requires oxygen. This method does not fit the definition of anaerobic waste disposal.
C. Composting (Option C) is another waste management technique that involves aerobic decomposition, meaning it requires oxygen. Composting focuses on breaking down organic waste materials to produce compost, not anaerobic decomposition.
D. Wetting and burying (Option D) is an outdated and unsanitary method of waste disposal. While it may briefly initiate anaerobic decomposition due to the initial watering, the waste is quickly exposed to air, rendering the process aerobic, not anaerobic.
**Clinical Pearl:** The correct anaerobic waste disposal method is crucial for environmental and public health reasons, as it reduces the risk of pathogen transmission and odor issues associated with aerobic decomposition methods (e.g., composting and incineration). Landfills are designed to slow down the waste degradation process, creating an environment suitable for anaerobic decomposition microorganisms, ensuring the conversion of organic waste into biogas.