Nagajyothi P C, Dinakar N, Suresh S, Udaykiran Y, Suresh C, Damodharam T
Department of Environmental Sciences, S V University, Tirupati, India.
J Environ Biol. 2009 May;30(3):385-8.
A pot culture experiment was conducted to study the effect of biomass power plant effluent on seed germination, seedling growth and chlorophyll content of green gram (variety LGG 460) have been estimated at different effluent concentrations and time intervals. The effluent is alkaline in nature (pH 8.5), odorless, and comprises of heavy metals such as Cr (0.071 mg l(-1)), Cu (0.014 mg l(-1)), Mn (0.036mg l(-1)), Fe (0.05 mg l(-1)), Co (0.31 mg l(-1)), Ni (0.041 mg l(-1)), Cd (0.028 mg l(-1)), Pb (0.108 mg l(-1)) and Zn (6.73 mg l(-1)). The germination percentage of seed, seedling growth and chlorophyll content showed a gradual decline with increase in effluent concentration. It has been observed that at 25% effluent concentration, there is growth in the root length (3.50 cm seedling(-1)), an increase in shoot length (23.90 cm seedling(-1)) and total chlorophyll content (4.467 mg g(-1) fresh weight) up to 20 days. After 20 day there is decline in all the parameters observed. However at higher concentrations of the effluent, toxic effects were observed from 20th day. This suggests that the effluent can be used safely for green gram cultivation, only after proper treatment and dilution.
进行了一项盆栽试验，以研究生物质发电厂废水对绿豆（品种LGG 460）种子萌发、幼苗生长和叶绿素含量的影响，并在不同废水浓度和时间间隔下进行了评估。该废水呈碱性（pH值8.5），无气味，含有重金属，如铬（0.071毫克/升）、铜（0.014毫克/升）、锰（0.036毫克/升）、铁（0.05毫克/升）、钴（0.31毫克/升）、镍（0.041毫克/升）、镉（0.028毫克/升）、铅（0.108毫克/升）和锌（6.73毫克/升）。种子发芽率、幼苗生长和叶绿素含量随着废水浓度的增加而逐渐下降。据观察，在25%的废水浓度下，直到20天，根长有增长（每株幼苗3.50厘米），茎长增加（每株幼苗23.90厘米），总叶绿素含量（鲜重4.467毫克/克）。20天后，观察到所有参数均下降。然而，在较高浓度的废水下，从第20天起就观察到了毒性作用。这表明，只有经过适当处理和稀释后，该废水才能安全用于绿豆种植。
