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Applied Sciences
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Anaerobic Digestion for the Production of Energy and Chemicals
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Anaerobic Digestion for the Production of Energy and Chemicals

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Chemical and Molecular Sciences".

Deadline for manuscript submissions: closed (30 November 2018) | Viewed by 7716

Special Issue Editor

Prof. Dr. Byoung-In Sang

E-Mail Website
Guest Editor
Department of Chemical Engineering, Hanyang University, 222 Wangshimniro, Seongdong-gu, Seoul 04763, Republic of Korea
Interests: bioenergy; biodegradable plastic; microbiome; power to gas; methanogenesis; carbon elongation
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

We would like to invite original research or review articles to a Special Issue of the journal Applied Sciences on the topic of “Anaerobic Digestion for the Production of Energy and Chemicals”. Anaerobic digestion (AD) for the production of methane containing biogas is the classic example of a resource recovery process that combines stabilization of particulate organic matter or wastewater treatment with the production of a valuable end-products, such as the intermediates for the production of commodity chemicals. Attractive features of AD include the production of a single end-product from a heterogeneous feedstock, and in-situ product separation of the gaseous end-product. Despite these intrinsic attractive properties of AD, the economic added value of the biogas produced is limited, enabling the development of alternative processes that yield higher-value end-products and energy. Typically, the production of higher value end-products from low value feedstock and industrial wastewater proceeds via intermediate production of carboxylic acids (CAs), i.e. short-chain carboxylic acids (SCCAs) and medium-chain carboxylic acids (MCCAs). Overall, we suggest that these novel bioprocessing routes for conversion of low value feedstock to higher added value products will contribute to a sustainable future and will change the economic status of organic wastes and wastewater.

The Special Issue aims to gather innovative and original research articles on various energy and chemicals production from organic wastes and wastewater, such as biometane, biohydrogen, SCCAs, MCCAs, the catalytic conversion of CAs into value-added products, power to gas, microbiome analysis in AD solid, liquid and other recovery and separation system applications of AD.

Prof. Dr. Byoung-In Sang
Guest Editor

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Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Applied Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Waste to energy and chemicals
  • Biogas production and upgrade
  • Power to gas
  • Biorefinery based on carboxylic acids
  • Microbiome in anaerobic digestion process
  • Biomethane
  • Biohydrogen
  • Recovery and separation process for biogas and/or carboxylic acids
  • Pretreatment for the enhancing performance of anaerobic digestion
  • Electrochemical application for anaerobic digestion
  • Valorization of by-products from anaerobic digestion

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Published Papers (2 papers)

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Research

19 pages, 4806 KiB  
Article
Synthesis of Oligomeric Silicone Surfactant and its Interfacial Properties
by Da Yin, Pingya Luo, Jie Zhang, Xuyang Yao, Ren Wang, Lihui Wang and Shuangwei Wang
Appl. Sci. 2019, 9(3), 497; https://doi.org/10.3390/app9030497 - 1 Feb 2019
Cited by 4 | Viewed by 3082
Abstract
During the exploitation of low permeability gas-condensate reservoirs, the mud filtrate, acidizing liquid, and fracturing fluid invade the reservoir and condensate gas, severely reducing the permeability of the reservoirs due to increased capillary pressure and water wettability. For the current paper, an oligomeric [...] Read more.
During the exploitation of low permeability gas-condensate reservoirs, the mud filtrate, acidizing liquid, and fracturing fluid invade the reservoir and condensate gas, severely reducing the permeability of the reservoirs due to increased capillary pressure and water wettability. For the current paper, an oligomeric silicone surfactant (OSSF) containing sulfonic acid groups was synthesized to improve the flowback of such fluids. The critical micelle mass concentration and critical surface tension were determined by equilibrium surface tension. The surface tension increased with the hot rolling temperature and decreased with the addition of NaCl, KCl, or CaCl2. When the concentration exceeded critical micelle mass concentration, a micelle was formed and its size increased with mass concentration. OSSF adsorption through solid–liquid surface changed the surface chemical composition of the cores and transferred the wettability of cores from water-wet to preferential gas-wet by decreasing the surface energy. At the same time, the increasing temperature led to a change in the adsorption isotherm of quartz sand from Langmuir type (L-type) to “double plateau” type (LS-type) in the OSSF solution. In addition, NaCl decreased the relative foam volume of OSSF while extending the half-life. OSSF decreased the initial foaming volume and stability of the induction period and accelerated sodium dodecyl benzene sulfonate (SDBS) formation. Full article
(This article belongs to the Special Issue Anaerobic Digestion for the Production of Energy and Chemicals)
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12 pages, 1941 KiB  
Article
Effects of Corn Stover Pretreated with NaOH and CaO on Anaerobic Co-Digestion of Swine Manure and Corn Stover
by Zhaoyang You, Shujuan Zhang, Hyunook Kim, Pen-Chi Chiang, Yonjun Sun, Ziyang Guo and Haiyang Xu
Appl. Sci. 2019, 9(1), 123; https://doi.org/10.3390/app9010123 - 31 Dec 2018
Cited by 29 | Viewed by 4216
Abstract
In this study, effects of pretreatment of corn stover (CS) with sodium hydroxide (NaOH) combined with calcium oxide (CaO) on anaerobic co-digestion of swine manure and CS for biogas production were investigated. Different pretreated-CSs were prepared by adding different doses of NaOH and [...] Read more.
In this study, effects of pretreatment of corn stover (CS) with sodium hydroxide (NaOH) combined with calcium oxide (CaO) on anaerobic co-digestion of swine manure and CS for biogas production were investigated. Different pretreated-CSs were prepared by adding different doses of NaOH and CaO to CS: Treat-CSA (0.10 g NaOH/g CS), Treat-CSB ((0.075 g NaOH + 0.05 g CaO)/g CS), Treat-CSC ((0.05 g NaOH + 0.05 g CaO)/g CS), and Treat-CSD ((0.025 g NaOH + 0.1 g CaO)/g CS). Lignin removal rate, biomass recovery, reduced sugar, methane yield, DT80 (digestion time when biogas achieved 80% of the total biogas), composition of residues, and cost-efficiency were measured to characterize CS after pretreatment and to evaluate the performance of co-digestors fed with swine manure and differently-pretreated CS. The results showed that Treat-CSB showed an excellent lignin removal efficiency and biomass recovery, resulting in the highest methane yield in its co-digestion with swine manure. Since the net benefit of Treat-CSB was calculated to be the highest (i.e., $1.89/ton total solids), therefore, we believe the co-digestion of Treat-CSB and swine manure for biogas production be an effective valorization option for the wastes. Full article
(This article belongs to the Special Issue Anaerobic Digestion for the Production of Energy and Chemicals)
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