RecoPhos: Full-scale fertilizer production from sewage sludge ash

Weigand, Harald; Bertau, Martin; Hübner, Wilfried; Bohndick, F.; Bruckert, Axel

doi:10.1016/j.wasman.2012.07.009

Cited by 87 publications

(54 citation statements)

References 19 publications

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“…The type of acid used together with selected additives will determine the form in which the phosphorus will be received, e.g. in a form of struvite (NH 4 MgPO 4 x 6H 2 O) (Xu, et al, 2012) or similar to commercial Triple Superphosphate (Weigand, et al, 2013).…”

Section: Phosphorus Recoverymentioning

confidence: 99%

Review of sewage sludge management: standards, regulations and analytical methods

Cieślik

Namieśnik

Konieczka

2015

Journal of Cleaner Production

446

127

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Section: Phosphorus Recoverymentioning

confidence: 99%

Review of sewage sludge management: standards, regulations and analytical methods

Cieślik

Namieśnik

Konieczka

2015

Journal of Cleaner Production

446

127

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“…According to the concept, the obtained fertilizers would be of NSCaMg type, with urea as the nitrogen source. The calcium and magnesium sulphates in the waste will be bounded in the fertilizer in the form of adducts of CaSO 4 · 4CO(NH 2 ) 2 and MgSO 4 · CO(NH 2 ) 2 · 3H 2 O. The test results confi rmed the possibility of obtaining the fertilizer consisting of 3,5% N; 8% S; 14% CaO and 3.5% MgO, characterised by appropriate physical properties.…”

Section: Discussionmentioning

confidence: 82%

“…In this fertilizer urea could be bounded with the calcium and magnesium sulphates from the waste in the form of adducts of CaSO 4 · 4CO(NH 2 ) 2 and MgSO 4 · CO(NH 2 ) 2 · 3H 2 O 6 .…”

mentioning

confidence: 99%

Utilization of waste gypsum in fertilizer production

Malinowski

Borowik²,

Wantuch

et al. 2014

Polish Journal of Chemical Technology

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The results of the study regarding utilization of the waste gypsum formed as a by-product during the production of the magnesium sulphate from dolomite have been presented. The use of this waste have been proposed for the production of granulated multi-component fertilizers containing 25% N; 8% S; 14% CaO and 3.5% MgO. In the process of fertilizer production, the urea which will be bounded with the calcium and magnesium sulphate from the waste in the form of adducts of CaSO 4 . 4CO(NH 2 ) 2 and MgSO 4 . CO(NH 2 ) 2 . 3H 2 O will be the source of nitrogen in the fertilizer. It has been stated on the basis of the laboratory tests that the fertilizer with the assumed composition can be obtained by means of granulation of the raw material pulp, along with the dried and ground product return. The possibility of the production of the fertilizer with good physical properties according to the assumed concept has been confi rmed in the pilot scale.

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“…Innowacyjnością tej technologii jest wprowadzenie reaktora InduCarb, w którym złoże węglowe ogrzewane jest indukcyjnie. Konstrukcja reaktor obejmuje szybkie usuwanie gazu z gorącego obszaru, co prowadzi do efektywniejszego odparowania fosforu [ [35][36][37][38][39][40] o C. W prowadzonych doświadczeniach stwierdzono, że wyższe temperatury wpływają niekorzystnie na cały proces, ponieważ wraz z temperaturą wzrastało stężenie uwalnianego żelaza. Po łu-gowaniu kwasem, roztwór kierowany jest do mieszalnika, gdzie zachodzi oddzielenie osadu.…”

Section: Recophosunclassified