Journal Browser

► Journal Browser

Special Issue Editors

Dr. Andreas Lemmer

E-Mail Website
Guest Editor

State Institute of Agricultural Engineering and Bioenergy, University of Hohenheim, Garbenstraße 9, 70599 Stuttgart, Germany
Interests: AD; biomass conversion technologies; biological hydrogen methanation; nutrient recovery; biofuels

Dr. Hans Oechsner

E-Mail Website
Guest Editor

State Institute of Agricultural Engineering and Bioenergy, University of Hohenheim, D-70599 Stuttgart, Germany
Interests: bioenergy; biogas process; trace elements for biogas; pretreatment of substrates; drying of digestate; efficiency of biogas processes; BMP test methods; energy crops; AD of organic waste; platform chemicals
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

An exponentially growing energy consumption of the world's population combined with the predominant use of fossil fuels has increased the carbon dioxide concentration in the atmosphere from 320 ppm in 1955 to over 400 ppm in 2018. Greenhouse gas emissions in recent decades have resulted in an increase in the average global surface temperature from −0.8°C in 1900 to +0.2°C today and sea level from −0.15 m to +0.05 m in the same period.

Reducing greenhouse gas emissions is essential to mitigate the effects of climate change. And mitigation climate change means nothing else but preserving the basis for our existence on our planet. One of the measures to reduce greenhouse gas emissions is the use of solar radiation to generate electrical energy. This can be done either directly via photovoltaics or indirectly via the use of wind energy or biomass. There is no need to discuss the fact that photovoltaics and wind power have the greatest potential for expansion. However, the power grids are not designed for the large-scale expansion and connection of different decentralised and fluctuating generation plants. This represents a major challenge for grid stability and leads to a profound change in energy supply systems.

Biomass and biofuels can make a significant contribution to the stabilization of networks and are indispensable for CO₂-neutral energy supply in the future. Biomass and biofuels are storable energy sources and the only way to provide control energy on the basis of renewable energies.

The consistent, worldwide use of biogenic residues and waste materials for the production of bioenergy, the development of new conversion processes, the recovery of nutrients from biomass and the efficient integration of biomass into future energy systems are major challenges in today's world.

Dr. Andreas Lemmer
Dr. Hans Oechsner
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. International Journal of Environmental Research and Public Health 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 2500 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

Bionergy
Biofuels
Climate change mitigation
Energy supply systems
Grid stability

Published Papers (2 papers)

Download All Papers

Research

17 pages, 4777 KiB

Open AccessArticle

Physiological Changes of Parachlorella Kessleri TY02 in Lipid Accumulation under Nitrogen Stress

by Yifan Gao, Jia Feng, Junping Lv, Qi Liu, Fangru Nan, Xudong Liu and Shulian Xie

Int. J. Environ. Res. Public Health 2019, 16(7), 1188; https://doi.org/10.3390/ijerph16071188 - 02 Apr 2019

Cited by 26 | Viewed by 3119

Abstract

In order to study the effects of nitrogen stress on the lipid synthesis of Parachlorella kessleri TY02 and to understand the changes in growth, photosynthetic pigments, total protein and total carbohydrate contents during lipid accumulation, the cells of the strain were cultured in nitrogen-deficient (N⁻) and nitrogen-rich (N⁺) media for one week. Changes in cell growth, chlorophyll content, chlorophyll fluorescence parameters, neutral lipid and total lipid content, total protein content and total carbohydrate content were measured and analyzed. The results showed that, under nitrogen stress, the algal strain grew slowly, and chlorophyll and total protein contents decreased, while total carbohydrate and total lipid contents increased. This indicated that, under nitrogen stress, most of the carbon flowed to the synthesis of lipids and carbohydrates. Meanwhile, reducing the nitrogen content was a relatively economical and easy to operate method of promoting lipid accumulation. Full article

(This article belongs to the Special Issue Bioenergy)

► Show Figures

Figure 1

13 pages, 2316 KiB

Open AccessArticle

Crude Oil Degrading Fingerprint and the Overexpression of Oxidase and Invasive Genes for n-hexadecane and Crude Oil Degradation in the Acinetobacter pittii H9-3 Strain

by Yang Wang, Qiuyu Wang and Limei Liu

Int. J. Environ. Res. Public Health 2019, 16(2), 188; https://doi.org/10.3390/ijerph16020188 - 10 Jan 2019

Cited by 11 | Viewed by 3507

Abstract

A crude oil-degrading bacterium named strain H9-3 was isolated from crude oil contaminated soil in the Northeastern area of China. Based on its morphological characteristics and 16S rDNA sequence analysis, strain H9-3 is affiliated to Acinetobacter pittii in the group of Gammaproteobacteria. The [...] Read more.

^{- 1}

of crude oil within 21 days. GC-MS was performed and a preference was shown for n-C10, n-C11, i-C14, i-C17, i-C34, n-C12, n-C13, n-C14, n-C27, n-C32 and i-C13, over n-C16, n-C18–C22, n-C24–n-C31, and n-C36. This can be regarded as the specific fingerprint for crude oil degradation by strain H9-3 of Acinetobacter pittii. In addition to crude oil, it was shown that soybean oil and phenols can be utilized as carbon sources by strain H9-3. It was also shown that aniline and

α

-naphthol cannot be utilized for growth, but they can be tolerated by strain H9-3. Methylbenzene was neither utilized nor tolerated by strain H9-3. Although n-hexadecane was not preferentially consumed by strain H9-3, during culture with crude oil, it could be utilized for growth when it is the sole carbon source. The degradation of some branched alkanes (i-C14, i-C17 and i-C34) and the preferential degradation of crude oil over phenols could be used as a reference for distinguishing A. pittii from A. calcoaceticus. The difference in gene expression was very significant and was induced by diverse carbon sources, as shown in the qRT-PCR results. The oxidation and adhesion events occurred at high frequency during alkane degration by Acinetobacter pittii strain H9-3 cells. Full article

(This article belongs to the Special Issue Bioenergy)

► Show Figures

Figure 1

Journal Menu

Journal Browser

Bioenergy

Share This Special Issue

Special Issue Editors

Special Issue Information

Keywords

Published Papers (2 papers)

Research

Further Information

Guidelines

MDPI Initiatives

Follow MDPI