Sewage sludge ash--A promising secondary phosphorus source for fertilizer production

The Science of the Total Environment
Hannes HerzelChristian Adam

Abstract

Sewage sludge incineration is extensively practiced in some European countries such as the Netherlands, Switzerland, Austria and Germany. A survey of German sewage sludge ash showed that the recovery potential is high, approx. 19,000 t of phosphorus per year. However, the survey also discovered that the bioavailability of phosphorus in the sewage sludge ash is poor and that more than half of the ashes cannot be used as fertilizers due to high heavy metal content. A new thermochemical process for sewage sludge ash treatment was developed that transforms the ash into marketable fertilizer products. Sewage sludge ash was thermochemically treated with sodium and potassium additives under reducing conditions, whereby the phosphate-bearing mineral phases were transformed into plant available phosphates. High P-bioavailability was achieved with a molar Na/P ratio >1.75 in the starting materials. Sodium sulfate, carbonate and hydroxide performed comparably as additives for this calcination process. Potassium carbonate and -hydroxide have to be added in a molar K/P ratio >2.5 to achieve comparable P-solubility. The findings of the laboratory scale investigations were confirmed by an industrial demonstration trial for an ash treatment wi...Continue Reading

Citations

Apr 2, 2016·Waste Management·Paula GuedesAlexandra B Ribeiro
Apr 12, 2016·Journal of Hazardous Materials·Christian VogelChristian Adam
Jul 28, 2016·The Science of the Total Environment·Yanchao BaiKe Feng
Oct 27, 2016·The Science of the Total Environment·Yuanyao YeHui Jia
Mar 9, 2017·Environmental Research·Oliver Krüger, Christian Adam
Sep 27, 2019·International Journal of Environmental Health Research·Ahmed KhadraMohamed Hafidi
Jul 6, 2019·Environmental Science and Pollution Research International·Luciano A GomesMargarida J Quina
Apr 20, 2020·Environmental Science and Pollution Research International·Christian VogelChristian Adam
Jun 11, 2019·Journal of Environmental Quality·Simone NanzerEmmanuel Frossard
Sep 18, 2020·International Journal of Environmental Research and Public Health·Natividad MiguelMaría P Ormad
Dec 11, 2020·Environmental Technology·Torben BauerAnders Lagerkvist
Nov 29, 2020·Journal of Environmental Management·Benedict C KruegerMichael R Templeton
Aug 24, 2020·Journal of Environmental Management·Ivan Dos Santos PereiraAndressa de Oliveira Silveira
Aug 1, 2020·Journal of Hazardous Materials·Arun Kumar PrabhakarChi-Hwa Wang
Apr 18, 2019·Environmental Science & Technology·Olivier DubocWalter W Wenzel
Aug 7, 2018·Environmental Science & Technology·Šárka VáclavkováKarel Svoboda

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.