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An experimental investigation on phytoremediation performance of water lettuce (Pistia stratiotes L.) for pollutants removal from paper mill effluent

机译:水莴苣(PISTIES STRATIOTELS L.)植物植物修复性能对造纸厂造成污染物的实验研究

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The present study describes the phytoremediation performance of water lettuce (Pistia stratiotes L.) for physicochemical pollutants elimination from paper mill effluent (PME). For this, pot (glass aquarium) experiments were conducted using 0% (BWW: borewell water), 25%, 50%, 75%, and 100% treatments of PME under natural day/light regime. Results of the experiments showed that the highest removal of pH (10.75%), electrical conductivity (EC: 63.82%), total dissolved solids (TDS: 71.20%) biological oxygen demand (BOD: 85.03%), chemical oxygen demand (COD: 80.46%), total Kjeldahl's nitrogen (TKN: 93.03%), phosphorus (P: 85.56%), sodium (Na: 91.89%), potassium (K: 84.04%), calcium (Ca: 84.75%), and magnesium (Mg: 83.62%), most probable number (MPN: 77.63%), and standard plate count (SPC: 74.43%) was noted in 75% treatment of PME after treatment by P. stratiotes. PCA showed the best vector length for TKN, Na, and Ca. The maximum plant growth parameters including, total fresh biomass (81.30 +/- 0.28 g), chlorophyll content (3.67 +/- 0.05 mg g(-1) f.wt), and relative growth rate (0.0051 gg(-1) d(-1)) was also measured in 75% PME treatment after phytoremediation experiments. The findings of this study make useful insight into the biological management of PME through plant-based pollutant eradication while leftover biomass may be used as a feedstock for low-cost bioenergy production.Practitioner pointsBiological treatment of paper mill effluent using water lettuce is presented.Best reduction of physicochemical and microbiological pollutants was attained in 75% treatment.Maximum production of chlorophyll, plant biomass, and highest growth rate was also observed in 75% treatment.
机译:本研究描述了水莴苣(Pistia stratiotels L.)的植物修复性能,用于从造纸厂流出物(PME)消除物理化学污染物。为此,使用0%(BWW:Borewell水),25%,50%,75%和100%在自然一天/灯节制度下的PME处理的锅(玻璃水族箱)实验。实验结果表明,去除pH(10.75%),电导率(EC:63.82%),总溶解固体(TDS:71.20%)生物需氧量(BOD:85.03%),化学需氧量(COD: 80.46%),总Kjeldahl的氮气(TKN:93.03%),磷(P:85.56%),钠(Na:91.89%),钾(K:84.04%),钙(Ca:84.75%)和镁(Mg :83.62%),最可能的数量(MPN:77.63%)和标准板数(SPC:74.43%)在P.Stratiots治疗后的75%治疗P. Stratiot后的75%治疗P. stratiot后。 PCA显示了TKN,NA和CA的最佳矢量长度。最大植物生长参数包括全新生物量(81.30 +/- 0.28g),叶绿素含量(3.67 +/- 0.05 mg(-1)f.wt)和相对生长速率(0.0051 gg(-1)d) (-1))也以75%的PME处理在植物化修复实验中测量。本研究的结果对PME通过基于植物的污染物消除进行了有益的洞察,而剩余的生物量可以用作低成本生物能源生产的原料。介绍了使用水莴苣的造纸厂流出物的结果.best 75%的治疗方法达到了物理化学和微生物污染物的减少。在75%的治疗中也观察到叶绿素,植物生物质和最高生长速率的增长。

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