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Energies
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Energy and Environmental Sustainability 2020
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Energy and Environmental Sustainability 2020

A special issue of Energies (ISSN 1996-1073).

Deadline for manuscript submissions: closed (25 January 2021) | Viewed by 6070

Special Issue Editors

Prof. Dr. Raghava R. Kommalapati

E-Mail Website
Guest Editor
Center for Energy and Environmental Sustainability & Department of Civil and Environmental Engineering, Prairie View A&M University, Prairie View, TX 77446, USA
Interests: membrane processes for treatment of produced water from fracking operations and poultry wastewater; life cycle analysis; air quality modeling; environmental impacts of energy technologies, and co-digestion of waste materials produced water
Special Issues, Collections and Topics in MDPI journals
Dr. Hongbo Du

E-Mail Website
Guest Editor
Center for Energy and Environmental Sustainability, Prairie View A&M University, Prairie View, TX 77446, USA
Interests: the treatment of shale oil and gas produced water; poultry processing wastewater; industrial wastewater with various membrane technologies (e.g., ultrafiltration, nanofiltration, forward osmosis, and reverse osmosis); carbon capture, energy and environmental sustainability, and biomass processing
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

We are working on a Special Issue that highlights research in the broader area of energy and environmental sustainability. More and more emphasis is placed on sustainable energy technologies or processes that make conventional energy technologies more sustainable. Life cycle environmental impacts and energies are used as a way to compare these different technologies. The idea is for this Special Issue to identify articles that address some of these broader issues. Topics could include life cycle analysis that focuses on emissions or energy, the food–water–energy nexus, sustainable energy technologies, waste to energy, etc. Please note that this is not a comprehensive list. We will consider research as well as review articles.

Prof. Dr. Raghava R. Kommalapati
Dr. Hongbo Du
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

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. Energies 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 2600 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

  • Environmental sustainability 
  • Life cycle analysis 
  • Fracking-produced water 
  • Environmental emissions 
  • Waste to Energy

Published Papers (2 papers)

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Research

14 pages, 3592 KiB  
Article
Batch Anaerobic Co-Digestion and Biochemical Methane Potential Analysis of Goat Manure and Food Waste
by Ayobami Orangun, Harjinder Kaur and Raghava R. Kommalapati
Energies 2021, 14(7), 1952; https://doi.org/10.3390/en14071952 - 01 Apr 2021
Cited by 18 | Viewed by 2881
Abstract
The improper management of goat manure from concentrated goat feeding operations and food waste leads to the emission of greenhouse gasses and water pollution in the US. The wastes were collected from the International Goat Research Center and a dining facility at Prairie [...] Read more.
The improper management of goat manure from concentrated goat feeding operations and food waste leads to the emission of greenhouse gasses and water pollution in the US. The wastes were collected from the International Goat Research Center and a dining facility at Prairie View A&M University. The biochemical methane potential of these two substrates in mono and co-digestion at varied proportions was determined in triplicates and processes were evaluated using two nonlinear regression models. The experiments were conducted at 36 ± 1 °C with an inoculum to substrate ratio of 2.0. The biomethane was measured by water displacement method (pH 10:30), absorbing carbon dioxide. The cumulative yields in goat manure and food waste mono-digestions were 169.7 and 206.0 mL/gVS, respectively. Among co-digestion, 60% goat manure achieved the highest biomethane yields of 380.5 mL/gVS. The biodegradabilities of 33.5 and 65.7% were observed in goat manure and food waste mono-digestions, while 97.4% were observed in the co-digestion having 60% goat manure. The modified Gompertz model is an excellent fit in simulating the anaerobic digestion of food waste and goat manure substrates. These findings provide useful insights into the co-digestion of these substrates. Full article
(This article belongs to the Special Issue Energy and Environmental Sustainability 2020)
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24 pages, 555 KiB  
Article
Stakeholders’ Analysis of Environmental Sustainability in Urban Logistics: A Case Study of Tricity, Poland
by Jagienka Rześny-Cieplińska and Agnieszka Szmelter-Jarosz
Energies 2021, 14(5), 1274; https://doi.org/10.3390/en14051274 - 25 Feb 2021
Cited by 6 | Viewed by 2502
Abstract
Environmental sustainability, defined as the responsibility to protect the global ecosystem in a holistic way, has become an integral factor of city strategies. Designing and implementing environment-friendly solutions to make the standard of living in cities better is indispensable for present and future [...] Read more.
Environmental sustainability, defined as the responsibility to protect the global ecosystem in a holistic way, has become an integral factor of city strategies. Designing and implementing environment-friendly solutions to make the standard of living in cities better is indispensable for present and future generations. This article’s main objective is to identify the most environmentally friendly urban logistics measures from the perspective of urban transport system stakeholders. A multi-method approach was implemented to achieve the article’s main findings. Firstly, the literature review provided the basics for designing the research framework. Then, a three-layer methodological approach was used: The first layer included designing and carrying out the case study approach; the second layer comprised a Delphi study involving interviews with urban logistics stakeholders; and the third layer included analyzing the voices of Delphi interviewees to assess which urban logistics measures are the most important for them. The study provides an initial insight into the opinions of stakeholders for a general audience, but at the same time, also presents specific, detailed views of Tricity urban space users and decision-makers. Significant differences in opinions were observed and confirmed in the interviewed group. This study can contribute to the scientific discussion about the stakeholders’ analysis of urban logistics goals. Full article
(This article belongs to the Special Issue Energy and Environmental Sustainability 2020)
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