16. Which of the following can be used for the removal of color from the effluents of pulp mill?

A. Coriolus versicolor entrapped in calcium alginate beads
B. Phanerochaete chrysosporium
C. Both (a) and (b)
D. Nitrosomonas Europaea

17. Which of the following has been used to oxidize ammonia and to prevent algal growth?

A. growth of hyphomicrobium in presence of added methanol
B. Micrococcus denitrificans cells encapsulated in liquid membranes
C. Both (a) and (b)
D. Nitrosomonas Europaea