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      Effect of Tetracycline Antibiotics on Anaerobic Digestion of Chicken Manure Based on Data Mining

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      Computational Intelligence and Neuroscience
      Hindawi

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          Abstract

          Although anaerobic bioengineering treatment of chicken manure has the advantages of low energy consumption, less pollution, and recyclable biomass energy, antibiotics are usually added in the process of modern intensive farming. And antibiotics still exist in feces and pose a threat to human health. Therefore, this study aimed to deeply understand the role of TC in the anaerobic digestion of chicken manure and to analyze the effect of tetracycline antibiotics on the anaerobic digestion of chicken manure based on data mining. In this study, chicken manure was used as raw material for anaerobic fermentation, and the effects of tetracycline (TC) on anaerobic and anaerobic fermentation of chicken manure were compared through batch and sequence experiments. Also, this study analyzes the fermentative transformation to elucidate the effect of TC on anaerobic manure conversion in chicken manure, which further studies the effect of TC on the anaerobic fermentation of chicken manure. The experimental results in this study show that when the TC concentration is 50–150 mg/L, the content of tryptophan and tyrosine proteins in the treatment group is also higher than that in the control group. It shows that at low concentrations (10, 25 mg/L), TC mainly promotes the degradation of LEPS by promoting the dissolution of intracellular substances in the sludge. With the increase of TC concentration (50–300 mg/L), TC mainly promotes the breakdown of the sludge cell membrane by promoting the rupture of the sludge cell membrane, thereby promoting the degradation of LEPS.

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          Most cited references19

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          Overview of pretreatment strategies for enhancing sewage sludge disintegration and subsequent anaerobic digestion: Current advances, full-scale application and future perspectives

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            Pretreatment methods of lignocellulosic biomass for anaerobic digestion

            Agricultural residues, such as lignocellulosic materials (LM), are the most attractive renewable bioenergy sources and are abundantly found in nature. Anaerobic digestion has been extensively studied for the effective utilization of LM for biogas production. Experimental investigation of physiochemical changes that occur during pretreatment is needed for developing mechanistic and effective models that can be employed for the rational design of pretreatment processes. Various-cutting edge pretreatment technologies (physical, chemical and biological) are being tested on the pilot scale. These different pretreatment methods are widely described in this paper, among them, microaerobic pretreatment (MP) has gained attention as a potential pretreatment method for the degradation of LM, which just requires a limited amount of oxygen (or air) supplied directly during the pretreatment step. MP involves microbial communities under mild conditions (temperature and pressure), uses fewer enzymes and less energy for methane production, and is probably the most promising and environmentally friendly technique in the long run. Moreover, it is technically and economically feasible to use microorganisms instead of expensive chemicals, biological enzymes or mechanical equipment. The information provided in this paper, will endow readers with the background knowledge necessary for finding a promising solution to methane production.
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              Upgrading the value of anaerobic digestion via chemical production from grid injected biomethane

              Coupling decentralized biomethane generation to centralized CO production via gas grid redistribution can be an economically viable CO 2 utilization strategy. Anaerobic digestion can already at small scale effectively convert (waste) biomass to biogas. This biogas is typically combusted to generate electricity and heat, which is incentivized by regulatory support schemes. Because biogas can also be upgraded to biomethane and subsequently injected into the gas grid, the anaerobic digester can be considered as a means to connect decentralized biomass production to a centralized gas grid. We currently estimate the level of required government support to realize a profitable investment in Europe at 20–50 € MWh e −1 for the valorization of an average biogas in a combined heat and power unit, and at 15–25 € MWh −1 for the production of pipeline-quality biomethane, typically used as fuel. Here we explore, both technically and economically, an alternative scenario where biogas is upgraded to biomethane, injected into the existing gas grid, and used elsewhere to produce CO, syngas or H 2 . The super-dry reforming of CH 4 , a chemical looping approach using up to three CO 2 molecules per CH 4 , allows an intensified production of CO as a feedstock for synthesis of platform chemicals and fuels through CO 2 utilization. Even without subsidies, at present values and costs, this creates an economically positive case which can promote anaerobic digestion as an important driver for a new bio-industry. This approach avoids biomass transportation, in contrast with present biorefineries, while effectively valorizing decentralized biomass feedstocks such as agricultural waste or energy crops.
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                Author and article information

                Contributors
                Journal
                Comput Intell Neurosci
                Comput Intell Neurosci
                cin
                Computational Intelligence and Neuroscience
                Hindawi
                1687-5265
                1687-5273
                2022
                15 June 2022
                : 2022
                : 6335146
                Affiliations
                College of Resources and Environment, Northwest A&F University, Yangling 712100, Shanxi, China
                Author notes

                Academic Editor: Rahim Khan

                Author information
                https://orcid.org/0000-0002-8543-4152
                Article
                10.1155/2022/6335146
                9217589
                35755734
                053d5c6d-2578-44c8-b9ac-ea056f2b43f9
                Copyright © 2022 Haiqi Zhai and Hong Qiang.

                This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

                History
                : 7 April 2022
                : 5 May 2022
                : 27 May 2022
                Categories
                Research Article

                Neurosciences
                Neurosciences

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