Survey of Studies on Renewable Energy Production by Microalgae Affecting factors on hydrogen production by photosynthetic bacteria Rhodopseudomonas Application of DG-DGGE to analyze microbial community diversity and population dynamics in fermentative hydrogen-producing system Anaerobic biodegradation of phthalic acid esters (PAEs) in municipal sludge. Effects of Sulfur and pH on Photohydrogen Production of the Green Alga Chlorella pyrenoidosa Effects of Exogenous Glucose on Growth and Hydrogen Production of Chlamydomonas reinhardtii