Environments: 10 Years of Science Together

A special issue of Environments (ISSN 2076-3298).

Deadline for manuscript submissions: 31 December 2024 | Viewed by 1128

Special Issue Editor


E-Mail Website1 Website2 Website3
Guest Editor
1. Department of Science and Technology, Parthenope University of Naples, Centro Direzionale, Isola C4, 80143 Napoli, Italy
2. State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Beijing Normal University, No. 19 Xinjiekouwai Street, Beijing 100875, China
Interests: life cycle assessment; energy–exergy–emergy; environmental impact assessment; circular economy; urban metabolism and sustainability; food and water security; disparity in access to energy sources; large efforts invested in energy and resource efficiency, prosperous way down, and environmental integrity
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Special Issue Information

Dear Colleagues,

As the Editor-in-Chief of Environments, I am pleased to announce this Special Issue, entitled “Environments: 10 Years of Science Together”. With 2024 marking the 10th anniversary of Environments (ISSN: 2076-3298), we are taking this opportunity to celebrate the journal´s achievements over the last 10 years. Since 2014, when the inaugural issue of Environments was launched, we have published more than 1000 papers from more than 4600 authors. Environments is now indexed in Scopus, ESCI (Web of Science), and other databases—a clear demonstration of the huge interest and effort of readers, authors, reviewers, editors, and the Editorial Office Members. This Special Issue aims to cover the latest research and innovative developments on a broad range of environmental topics according to the keywords below indicated (and more). We warmly invite you to contribute original research papers or comprehensive review articles for peer-review and possible publication.

We look forward to receiving your valued contributions.

Prof. Dr. Sergio Ulgiati
Guest Editor

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. Environments is an international peer-reviewed open access monthly 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 1800 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 conservation
  • environmental technologies and methodologies
  • environmental protection and pollution prevention
  • environmental modeling and technology
  • environmental management and policy
  • environmental impact and risk assessment
  • environmental change and conservation
  • environmental analysis and monitoring
  • ecosystem services, biodiversity, and natural capital
  • environmental economics
  • development and application of environmental data, information, tools, and decision support systems
  • systems thinking
  • energy transition
  • circular economy
  • climate change’s impacts on human health
  • population growth, resource demand, and Earth’s sustainability

Published Papers (1 paper)

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Research

20 pages, 4512 KiB  
Article
Flexible Green Ammonia Production Plants: Small-Scale Simulations Based on Energy Aspects
by Guillermo de la Hera, Gema Ruiz-Gutiérrez, Javier R. Viguri and Berta Galán
Environments 2024, 11(4), 71; https://doi.org/10.3390/environments11040071 - 02 Apr 2024
Viewed by 816
Abstract
The conventional Haber–Bosch process (HBP) for NH3 production results in CO2 emissions of almost 400 Mt/y and is responsible for 1–2% of global energy consumption; furthermore, HBP requires large-scale industrial equipment. Green or e-ammonia produced with hydrogen from alkaline water electrolysis [...] Read more.
The conventional Haber–Bosch process (HBP) for NH3 production results in CO2 emissions of almost 400 Mt/y and is responsible for 1–2% of global energy consumption; furthermore, HBP requires large-scale industrial equipment. Green or e-ammonia produced with hydrogen from alkaline water electrolysis using renewable energy and nitrogen from the air is considered an alternative to fossil-fuel-based ammonia production. Small-scale plants with the distributed on-site production of e-ammonia will begin to supplant centralized manufacturing in a carbon-neutral framework due to its flexibility and agility. In this study, a flexible small-scale NH3 plant is analyzed with respect to three steps—H2 generation, air separation, and NH3 synthesis—to understand if milder operating conditions can benefit the process. This study investigates the aspects of flexible small-scale NH3 plants powered by alkaline electrolyzer units with three specific capacities: 1 MW, 5 MW, and 10 MW. The analysis is carried out through Aspen Plus V14 simulations, and the primary criteria for selecting the pressure, temperature, and number of reactors are based on the maximum ammonia conversion and minimum energy consumption. The results show that: (i) the plant can be operated across a wide range of process variables while maintaining low energy consumption and (ii) alkaline electrolysis is responsible for the majority of energy consumption, followed by the ammonia synthesis loop and the obtention of N2, which is negligible. Full article
(This article belongs to the Special Issue Environments: 10 Years of Science Together)
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