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Title: Tolerance of some hardy plant species to biomethanated spent wash of distilleries
Authors: Sharma, K P
Singh, P K
Kumar, Suresh
Sharma, Shweta
Kumar, Ramesh
Keywords: Tolerance;spent wash;COD;glycophyte;halophyte;helophyte
Issue Date: Jan-2011
Publisher: NISCAIR-CSIR, India
Abstract: Sixteen plant species belonging to glycophytes (6 species of Acacia, Dendrocalamus strictus & Lawsonia inermis), halophytes (Atriplex nummularia, Chenopodium murale & Suaeda nudiflora) and helophytes (Arundo donax, Phragmites karka, Typha angustata, Scirpus tuberosus & Scirpus littoralis) were screened at field capacity in the biomethanated diluted spent wash of varying concentrations (750-35,000 ppm). The irrigation practices followed were surface (downflow by gravity) and sub-surface (upflow by capillary action) applied at different rates and time intervals (surface=30 mm m-2 at wkly intervals in the rainy season, and 20 mm m-2 on every 4th and 7th d in the summer and summer+rainy season for 30 d; sub-surface=10 mm m-2 d -1 for 45 d). Control sets were irrigated similarly with the tap water adding 20% Hoagland solution at wkly intervals. Soil moisture at field capacity was maintained during summer by adding tap water in the evening. Plant growth was monitored in terms of their biomass and chlorophyll content. Proline content in leaves was found to be most sensitive to spent wash. Merits and demerits of irrigation practices are discussed in light of the present findings. Plant species found tolerant to the diluted spent wash were Acacia farnesiana, D. strictus and L. inermis (glycophytes), A. nummularia and S. nudiflora (halophytes), A. donax and P. karka (helophytes). Besides pollution abatement and carbon locking, accrued returns of planting these species in High rate evapotranspiration system (HRES) are fodder, fuel wood, biomass for multiple uses and products such as henna, oil (Atriplex seeds).
Page(s): 97-112
ISSN: 0975-0967 (Online); 0972-5849 (Print)
Appears in Collections:IJBT Vol.10(1) [January 2011]

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