Table 7 Annual operating costs.

From: Integrated economic and adsorption performance study of CMC/MMT nano-composite for cationic dye removal from industrial wastewater

Item description

In 1000 $/ year.

1-Total raw materials costs

32,621

2-Utilities:

Electricity

Process water

Steam

Cooling water (20% make-up)

22

26.7

959.4

4.9

3-Maintenance (3% for buildings and 5% for installed equipment)

94.5

4-Operating labor (COL) (30,000 man-h/year)

96

5-Laboratory charges(0.1 COL)

9.6

6-Direct supervisory and clerical labor (0.2 COL)

19.2

Total direct costs of manufacturing

33,853.3