Question 11 of 14intermediate💡 UnderstandMCQ1 mark

Which of the following is not a strategy of bioremediation?

Exercise: EXERCISES | Q: 13 | (Page 36)
For More Understanding

Explanation

The correct answer is Option (A) Sludge digestion. Based on the provided context, bioremediation strategies are specifically discussed in relation to cleaning up contaminated soil and water from toxic substances like petroleum spillage, mining residues, and pesticides. The context describes in situ bioremediation (where microorganisms degrade toxicants onsite) and ex situ bioremediation (where contaminated soil is physically removed and treated separately). Sludge digestion is a process related to sewage and wastewater treatment, not specifically mentioned as a bioremediation strategy for contaminated sites. The other options—Composting, Slurry bioreactor, and Biopiles—are recognized ex situ bioremediation techniques used for treating contaminated soil, which aligns with the context's discussion of strategies where contaminated soil is 'physically taken out and treated separately.'

Solution Steps

  1. Step 1: Understand that bioremediation strategies deal with cleaning toxic substances from contaminated soil/water.

  2. Step 2: Identify that the context discusses in situ (onsite) and ex situ (removed soil) bioremediation approaches.

  3. Step 3: Recognize that sludge digestion is a sewage treatment process, not a strategy for bioremediation of contaminated sites mentioned in the context.

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