Question
In: Chemistry
Mention the requisites for any cellulose raw material for the paper and pulp industries.
Mention the requisites for any cellulose raw material for the paper
and pulp industries.
Solutions
Expert Solution
Cellulose fibre is primary raw material for paper manufacturing. 50 per cent cellulose present in wood, 20 per cent aromatic hydrocarbons and hemicellulose, carbohydrates and approximatley 30 per cent lignin (a resinous adhesive which holds the fibres together) and . In order to isolate cellulose in for paper manufacture, the wood or plant material must be pulped to separate the fibres and remove impurities. The higher cellulose content of the pulp and longer fibres make better quality of paper. Hardwoods generally contain a higher proportion of cellulose but shorter fibre length than softwoods which are more resinous. Eucalyptus, Poplar, Acacia, Subabul, Casuarina are hardwood species and Pine is like soft wood used for manufacturing of paper and paperboard. Generally, chemical and mechanical pulping both involes inthe manufacturing of paper and paperboard from the wood.
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In paper chromtography, what is the nature of the attractions between the stationary phase (cellulose) and...
In paper chromtography, what is the nature of the attractions
between the stationary phase (cellulose) and the moving phase
(hydrochloric acid/water/acetone) and the species ( Zn2+, Co2+,
Cu2+, Cd2+ , Fe3+, and Ni2+ in two unknown
solutions) being separated, in particular what affects
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Case A Case B Case C Beginning inventory, raw material 96,000 7,000 Ending inventory, raw material...
Case
A
Case
B
Case
C
Beginning inventory, raw material
96,000
7,000
Ending inventory, raw material
198,000
33,000
Purchases of raw material
290,000
273,000
Direct material used
230,000
321,000
Direct labor
390,000
71,500
Manufacturing overhead
590,000
98,000
Total manufacturing costs
1,130,000
1,125,000
217,000
Beginning inventory, work in process
88,000
78,000
Ending inventory, work in process
123,000
4,300
Cost of goods manufactured
1,086,000
220,000
Beginning inventory, finished goods
190,000
138,000
Cost of goods available for sale
235,000
Ending inventory, finished goods...
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