An Investigation of Biodiesel Production from Wastes of Seafood Restaurants

Table 2

Chemical composition of biomass derived catalysts.

Biomass	Chemical composition (wt%)
Natural mollusks shells	C (17.35%) Mg (0.01%) Ca (26.01%) O (56.62%)
Calcinated mollusks shells at 800°C	C (3.47%) Mg (0.05%) Ca (62.32%) O (34.16%)
Natural crabs shells	C (14.44%) Na (1.1%) Mg (0.92%) Ca (29.85%) O (53.69%)
Calcinated crabs shells at 700°C	C (7.92%) Na (0.03%) Mg (0.53%) Ca (49.89%) O (41.63%)