Anthraquinone (AQ) is often used in non-wood chemical pulping using NaOH (soda pulping) because the Kraft process does not give you much of an advantage with non-woods (i.e. rice straw, wheat straw etc). Explain why AQ works well with soda pulping of non-wood?

Blade coater, air knife coater, and roll coater are three very commonly used coating devices. Describe how you would expect the coated paper surface to look using each of these coating processes.

A mill is using a PPY bleaching sequence. a)  What bleaching chemicals are they using? b) What pulp type (mechanical or chemical) are they using? c) Why do you think so? d) Is this TCF or ECF or neither, why?

Shown below is the schematic of a Kraft recovery boiler.  Match the letters shown on the boiler schematic with the different parts of the boiler.

What are the three main operating variables in operating an head box? What are hydraulic head boxes? How is the necessary turbulence to keep fibers dispersed achieved in hydraulic head box?

Hydraulic Jet barkers are very effective in removing bark with little wood loss. Unfortunately, they have two drawbacks? Please name the two drawbacks.

Why can an aerated lagoon be designed to be 25 or more feet deep, while a natural lagoon cannot be deeper than 3 or 4 feet?

What are the advantages and disadvantages of activated sludge treatment compared to an aerated lagoon?

If effluent is discharged that contains large amounts of solids, these solids will settle at the bottom of rivers and lakes as a sludge blanket. This often results in the development of a strong odor. Explain why that happens.

which of the properties below are determining coated sheet properties