Approach to application prospects of algal biotechnology in protection of water environment
KUANG Qi-jun;HU Zheng-yu;ZHAO Xian-fu;MA Pei-ming;CHEN Shan Institute of Hydrobiology, The Chinese Academy of Sciences, Wuhan 430072, China Graduate School, The Chinese Academy of Sciences, Beijing 100039, China
Algae, as a primary producer, play a very important role in metabolizing and energy following on keeping aquatic ecosystem balance. Heretofore, algal biotechnology has been extensively studied and applied in ecological toxicology of water pollution and in biological purification of wastewater. This paper gives a brief introduction about the research results on the investigated field. The early reported data showed that heavy metals, pesticides, organic pollutants and others had all toxic effect on algae growth, on enzyme activity, on algal cell form and inclusion. The toxicity order of some bivalent heavy metals on algae was Hg~(2+)Cd~(2+)Cu~(2+)Ni~(2+)Zn~(2+). Phenols, esters and aromatics had very serious effects on algal growth. Effected degree of pesticides on algae was dependent on its chemical structure and characteristics, on algal individual behavior and their environmental conditions. The photosynthesis, respiration and azotification of algae were restricted by the structure and function of their biological membrane destroyed. It was reported that the amount of sunlight, algal biomass, algal burning specific heat, and the retention time of sewage in treatment system, are the key factors to insure the efficiency on wastewater treatment by algal biotechnology. Algae are the regeneration and medicine resource. It is very important to pay attention to probe the technique of algal mass culture and to develop the application areas of algal biotechnology in the future.
【CateGory Index】： X52