Dear Colleagues,

Biofuels are produced from a wide variety of feedstock, namely 1^st, 2^nd, 3^rd, and 4^th generation biofuels. Although much attention has been placed on the development of biofuels to combat the rising global warming potential (GWP), they are not yet competitive with their counterparts. In addition, countries have set a wide range of greenhouse gas (GHG) emission reduction targets for biofuels compared to conventional fossil fuels. Currently, there is a big question regarding what biofuels should be produced, the sources of biomass, and the types of land that should be used for growing biomass to avoid competition with food/feed. Consequently, any initiatives or investments in biofuel need to be evaluated to determine their environmental and economic sustainability, as well as their rebound effects on sustainable development.

This Special Issue calls for manuscripts on technoeconomic and environmental issues of biofuels to demonstrate their environmental and economic viability for policymakers and environmentalists. The manuscript may report experimental results, theoretical analysis, and modeling. This Special Issue aims to include manuscripts on the following non-restrictive topics as centered on life cycle assessment (LCA) and life cycle costing (LCC):

• Thermochemical and biochemical conversion (1^st, 2^nd, 3^rd, and 4^th generation biofuels);
• Energy crops for bioenergy and sustainable land management;
• Co-processing of biomass and industrial waste streams;
• Carbon sequestration/carbon cycle;
• Sustainability of biofuels.

Dr. Poritosh Roy
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. Sustainability 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.

• biomass conversion technologies
• biofuels
• LCA, LCC
• sustainability of biofuels