Department Of Environmental Science And Technology

Permanent URI for this communityhttps://kr.cup.edu.in/handle/32116/84

Browse

Has files: NoSubject: search.filters.subject.Pretreatment

Search Results

Now showing 1 - 2 of 2
  • No Thumbnail Available
    Item
    Evaluation of Biodegradation Efficiency of Xylene Pretreated Polyethylene Wastes by Isolated Lysinibacillus fusiformis
    (Technoscience Publications, 2022-09-04T00:00:00) Kalia, Arun; Dhanya, M.S.
    The ability of the bacterial degradation of low-density polyethylene (LDPE) waste by Lysinibacillus fusiformis isolated from hydrocarbon-contaminated soil was investigated in the present study. The potential of the bacterial isolate to utilize LDPE waste bags of two different thicknesses in a month as a sole carbon source in mineral salt media was assessed. Further, the effect of pretreatment by xylene on the bacterial degradation of LDPE waste bags (0.5 percent w/v) in 30 days was investigated. The isolated Lysinibacillus fusiformis was able to degrade 9.51 percent of LDPE with 30 ?m thickness but able to degrade only 1.45 percent of LDPE having 50 ?m thickness. The bacterial biomass was 1.77 times higher on LDPE- 30 ?m containing media in comparison to LDPE- 50 ?m. The xylene pretreatment of LDPE wastes enhanced the biodegradation efficiency of isolated Lysinibacillus fusiformis to 12.09 and 1.97 percent respectively in 30 ?m and 50 ?m thick LDPE bags. The xylene pre-treatment improved the bacterial growth on media with LDPE of both thicknesses. The adherence of bacterium on the surface of LDPE was found more on 50 ?m thick xylene treated LDPE compared to its untreated LDPE than 30 ?m thick LDPE films. The xylene pre-treatment of polyethylene waste had an additive effect on the biodegradation of waste LDPE films with a significant effect on thickness. � 2022 Technoscience Publications. All rights reserved.
  • No Thumbnail Available
    Item
    Ethanol Production from Sugarcane: An Overview
    (wiley, 2022-01-11T00:00:00) Prasad, Shiv; Gupta, Vikas Chandra; Bhatt, Rajan; Dhanya, M.S.
    Sugarcane is grown in about 26 million ha globally, mostly in tropical to subtropical zones, including the Indian sub-continent. India is a leading producer and consumer of sugar in the world, with annual 25-32 million tons of production and contributes nearly 15-17% of global sugar production. Its cultivation is an excellent sucrose source, commonly referred to as table sugar or granulated sugar. Molasses, a byproduct of sugar processing, are currently being used for bioenergy production, especially ethanol, because of economically viable resource. During extraction of juice from sugarcane, vast amounts of bagasse are also generated and burned in plant boilers, which are uneconomical and sources of air pollutants. Various physical, chemical, biological pretreatment, and enzymatic hydrolysis/saccharification and fermentation are applied to produce ethanol from sugarcane bagasse. Scientists are trying to use this bagasse as an economically viable option to produce ethanol and develop inexpensive technologies that practically apply pretreatment, saccharification, and ethanol fermentation at an industrial scale. In future, utilization of these innovative bioconversion technologies, especially simultaneous saccharification and fermentation (SSF), will give a new alternative bioeconomy. It would also provide sustainable use of sugarcane bagasse to produce bioethanol to manage environmental and socioeconomic issues, including dependence on nonrenewable fossil fuel resources. � The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2021.