Question

Describe some conditions under which non-neutral technical change in paper making technology could lead to the...

Describe some conditions under which non-neutral technical change in paper making technology could lead to the increased emission of water pollution for paper factories.
Describe some conditions under which non-neutral technical change in paper making technology could lead to the reduced emission of water pollution for paper factories.

Homework Answers

Answer #1

In Paper Industry major source of water pollution is bleaching. Bleached waste water are not generally recovered. It has deradation products originating from the lignin, carbohydrates, acidic component phenols, neutral. These can't be easily bio degradable, due to presence of chlorphenolics.

Some conditions under which non-neutral technical change in paper-making technology could lead to the reduced emission of water pollution for paper factories:

  • Pre-bleaching with oxygen
  • Ultrafiltration
  • Cross-flow micro filtration
  • Carbon adsorption
  • Lime addition and precipitation
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