Treatment of Heavy Metals in Rock Phosphate, Phosphoric Acid and Phosphogypsum
A special issue of Minerals (ISSN 2075-163X). This special issue belongs to the section "Mineral Processing and Extractive Metallurgy".
Deadline for manuscript submissions: closed (24 December 2021) | Viewed by 791
Special Issue Editors
Interests: process engineering; recycling and recovery of industrial waste (circular economy); rehabilitation of industrial wastelands; polluted sites; biotechnology; Precision agriculture; geo-resources
Special Issues, Collections and Topics in MDPI journals
Interests: phosphate rock; phosphoric acid; uranium mining and processing; unconventional uranium resources; rare earths; flameless calcination; resources supply security
Special Issue Information
Dear Colleagues,
Phosphate rock is the main source of phosphorus, while apatite is the main constituent of phosphate rock. Worldwide phosphate production is estimated to be over 200 million tons a year; 90% of which is used as fertilizer in agriculture. Phosphate rock sources can be magmatic or sedimentary, the latter being the main source. Sedimentary phosphate rocks are characterized by the significant presence of impurities, which may be of commercial value (U, REE, fluoride).
Nevertheless, the world market for phosphate and fertilizers is more and more affected by regulations that limit the levels of certain elements for health or environmental reasons. In fact, EU regulation 2019/1009 of the European Parliament limits the maximum content of heavy metals such as cadmium, chromium, mercury, nickel, lead, and arsenic. For example, the voluntary label “low content of cadmium” for fertilizers establishes a cadmium content of less than 20 mg/kg.
Regulatory requirements force industry and producers to develop treatments, processes, and techniques for heavy metals removal. This Special Issue of Minerals will be organized around the following themes:
- Techniques and technology for the analysis and characterization of heavy metals in phosphate rock, phosphoric acid, and fertilizers;
- Techniques and technology for heavy metals removal from phosphate rock;
- Techniques and technology for heavy metals removal from phosphoric acid and fertilizers.
Dr. Essaid Bilal
Dr. Nils Haneklaus
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. Minerals 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 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
- phosphate rock
- fertilizer
- heavy metals
- removal
- regulation
- analysis technics
