Fresh banana pseudo-stems as a tropical lignocellulosic feedstock for methane production
Fresh banana pseudo-stems as a tropical lignocellulosic feedstock for methane production
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DOI：
10.1186/s13705-016-0093-9
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发表时间：
2016-10-03
影响因子：
4.9
通讯作者：
Liu, Jing
中科院分区：
文献类型：
--
作者：
Li, Chao;Liu, Gangjin;Liu, Jing
背景：香蕉假茎是一种低木质素含量的木质纤维素生物质，可用于甲烷生产。近年来，干香蕉茎厌氧消化（AD）用于甲烷生产引起了相当大的关注。然而，关于新鲜香蕉假茎产生甲烷的信息有限。新鲜香蕉茎作为可再生能源生产的资源，通过AD的直接可用性是一个必要的先决条件，一个改进的废物管理系统，最终在一个可持续的，以及当地的香蕉生产community.Methods的社会经济发展：在这项研究中，三个系列的实验同时进行调查的甲烷生产新鲜香蕉假茎的第一次。测试包括大小减少，酶的添加，和共同消化的香蕉茎与cow curtain.Results：实现甲烷产量分别为287，340，347 mL g（-1）挥发性固体颗粒大小为5，10，和20 mm的香蕉茎，分别。在20 mm粒度下获得最高产率，与5 mm粒度相比增加了21%。然而，5 mm粒度显示出高的初始水解速率，其最高水解速率常数为0.152 d（-1），而20 mm粒度为0.110 d（-1）。添加酶和共消化提高了水解率明显的高速率常数相比，控制虽然没有改善最终的甲烷production.Conclusions：这项研究表明，简单地应用最小的尺寸减少后，新鲜香蕉茎的可用性，高效和高甲烷生产。开展这一研究将使社会，特别是农村香蕉生产地区，在可再生能源发电和可持续废物管理方面受益。这些措施可以创造就业机会，提高生活水平。
Background: The banana pseudo-stem is a low-lignin-content lignocellulosic biomass that can be used for methane production. In recent years, anaerobic digestion (AD) of dried banana stems for methane production has attracted considerable attention. However, there is limited information regarding methane production from the fresh banana pseudo-stem. The direct usability of fresh banana stems as a resource for renewable energy production through AD is a called upon prerequisite for an improved waste management system culminating in a sustainable as well as socioeconomic development of local banana-producing communities.Methods: In this study, three series of experiments were performed simultaneously to investigate the methane production from fresh banana pseudo-stems for the first time. The tests included size reduction, enzyme addition, and co-digestion of banana stems with cow manure.Results: The achieved methane yields were 287, 340, to 347 mL g(-1) volatile solids for the banana stem with particle sizes of 5, 10, and 20 mm, respectively. The highest yield was obtained at the particle size of 20 mm, showing a 21 % increase compared to the particle size of 5 mm. However, the particle size of 5 mm showed a high initial rate of hydrolysis evident by the highest hydrolysis rate constant of 0.152 d(-1) as compared to 0.110 d(-1) for the 20-mm particle size. The addition of enzyme and co-digestion improved the rate of hydrolysis evident by a high rate constant as compared to the control though there was no improvement in the ultimate methane production.Conclusions: This study demonstrates the usability of the fresh banana stem for efficient and high methane production after simply applying a minimal size reduction. The implementation of such a study will benefit society especially rural banana-producing areas both toward renewable energy generation and sustainable waste management. These could lead to job creation and an improved standard of living.