El-Sheekh Mostafa M, El-Shouny Wagieh A, Osman Mohamed E H, El-Gammal Eman W E
Botany Department, Faculty of Science, Tanta University, Egypt.
Environ Toxicol Pharmacol. 2005 Feb;19(2):357-65. doi: 10.1016/j.etap.2004.09.005.
The growth of Nostoc muscorum and Anabaena subcylindrica in sterilized sewage wastewater and N. muscorum in sterilized wastewater of El-Soda Company was higher than those grown in Allen synthetic medium. Whereas, the growth of A. subcylindrica in El-Soda Company sterilized wastewater and N. muscorum as well as A. subcylindrica grown in Verta Company sterilized wastewater was slightly lower than that grown in the standard synthetic medium. The contents of chlorophyll a, carotenoids and protein of N. muscorum and A. subcylindrica grown in sterilized sewage wastewater were higher than those grown in the standard medium. Similarly, N. muscorum and the bio-mixture of N. muscorum and A. subcylindrica grown in the sterilized wastewater of El-Soda Company showed high pigments and protein contents more than those reared in Allen medium. On the other hand, the bio-mixture of N. muscorum and A. subcylindrica grown in the sterilized sewage wastewater, A. subcylindrica grown in El-Soda Company and Verta Company sterilized wastewater showed lower contents of pigments and protein compared to synthetic medium. Heavy metals, copper, cobalt, lead and manganese were removed by 12.5-81.8, 11.8-33.7, 26.4-100 and 32.7-100%, respectively, from wastewater by using cyanobacterial cultures. The metal sorption efficiency depended on the type of biosorbent, the physiological state of the cells, availability of heavy metal, concentration of heavy metal and chemical composition of wastewater. It was observed also that the single cultures in most cases was better than the mixed cultures in heavy metal removal, this may be due to the cyanobacterial competition for nutrients in mixed cultures.
念珠藻和圆柱鱼腥藻在灭菌的污水废水里的生长情况，以及念珠藻在埃尔 - 索达公司灭菌废水里的生长情况，都高于它们在艾伦合成培养基中的生长情况。然而，圆柱鱼腥藻在埃尔 - 索达公司灭菌废水里的生长情况，以及念珠藻和圆柱鱼腥藻在韦尔塔公司灭菌废水里的生长情况，略低于它们在标准合成培养基中的生长情况。在灭菌污水废水中生长的念珠藻和圆柱鱼腥藻的叶绿素a、类胡萝卜素和蛋白质含量高于在标准培养基中生长的。同样，在埃尔 - 索达公司灭菌废水里生长的念珠藻以及念珠藻与圆柱鱼腥藻的生物混合物，其色素和蛋白质含量高于在艾伦培养基中培养的。另一方面，在灭菌污水废水中生长的念珠藻与圆柱鱼腥藻的生物混合物、在埃尔 - 索达公司和韦尔塔公司灭菌废水里生长的圆柱鱼腥藻，与合成培养基相比，色素和蛋白质含量较低。通过使用蓝藻培养物，废水中的重金属铜、钴、铅和锰分别被去除了12.5 - 81.8%、11.8 - 33.7%、26.4 - 100%和32.7 - 100%。金属吸附效率取决于生物吸附剂的类型、细胞的生理状态、重金属的可用性、重金属浓度和废水的化学成分。还观察到，在大多数情况下，单一培养物在去除重金属方面比混合培养物更好，这可能是由于混合培养物中蓝藻对营养物质的竞争。
