Results 81 to 90 of about 521,823 (197)

Conservative Management Enabling Spontaneous Passage of an Idiopathic Primary Spontaneous Enterolith: A Case Report and Literature Review

Clinical Case Reports, Volume 14, Issue 7, July 2026.
ABSTRACT Enterolithiasis—formation of stone concretions within the gastrointestinal tract—is an uncommon and underrecognized cause of intermittent abdominal symptoms and acute bowel obstruction. Primary (true) enteroliths originate within the bowel lumen and are usually associated with focal stasis from anatomic or inflammatory pathology; idiopathic ...
Lensa Million Baharu, Ragasa Getachew Bayisa, Zenebe Teklu Gebremariam, Esmael Mohamed Dawud, Nigusu Solomon Herego, Nahom Teklu Maru, Webi Alemayehu Tulu, Ahmedin Solomon Kedir, Tamirat Godebo Woyimo   +8 more
wiley   +1 more source

Struvite Production From Wastewater: Effect of Magnesium‐to‐Ammonia Ratio and Stirring Velocity on Precipitation Efficiency and Settling Behavior

CLEAN – Soil, Air, Water, Volume 54, Issue 7, July 2026.
This study demonstrates that stoichiometric Mg2+:PO43− excess (1.1:1) and slow 10‐min dosing are critical for maintaining low supersaturation, yielding large crystals (>0.84 mm) and rapid settling (5.5–10.1 cm/min). This strategy optimizes nutrient recovery (≥80%) and solid–liquid separation without flocculants, proving viable for complex industrial ...
Samara Oliveira Sacht, Marcelo Silveira Bacelos, Paulo Sergio da Silva Porto, Aloísio José Bueno Cotta   +3 more
wiley   +1 more source

Nutrient and carbon partitioning and performance for swine manure management technologies

Journal of Environmental Quality, Volume 55, Issue 4, July/August 2026.
Abstract Swine manure management systems (MMSs) are critical for nutrient cycling. Common swine MMS storage types in the United States are deep pits, anaerobic lagoons, and slurry storages. This study presents a synthesis of literature documenting nutrient and carbon (C) partitioning via a material mass balance approach for four manure treatment ...
Erin L. Cortus, Mahmoud Sharara, Noelle Cielito Soriano, Kristina Jones, Daniel S. Andersen, Brett C. Ramirez   +5 more
wiley   +1 more source

A laboratory study of struvite precipitation for phosphorus removal from concentrated animal feeding operation wastewater [PDF]

, 2008
Struvite precipitation occurs spontaneously in many wastewater treatment facilities as a nuisance. However, struvite precipitation is now being studied as a method to concurrently treat high phosphorus wastewaters and generate a valuable product.
Dhakal, Sushmita
core   +1 more source

Strategies to enhance the recovery of phosphorus as struvite during the storage of urine

Results in Engineering
Phosphorus is a non-renewable resource, and it will in future become increasingly scarce. Urine can be used as a valuable resource of phosphate. One way to create favourable conditions for recovering phosphorus as struvite from urine is to store urine ...
Nicolás Hernández-Alcayaga, Dafne Crutchik   +1 more
doaj   +1 more source

Is Struvite a Prebiotic Mineral?

Life, 2013
The prebiotic relevance of mineral struvite, MgNH4PO4·6H2O, was studied experimentally as a phosphorylating reagent and, theoretically, to understand the geochemical requirements for its formation.
Matthew A. Pasek, Maheen Gull
doaj   +1 more source

Towards a Circular Phosphorus Economy: Electroless Struvite Precipitation from Cheese Whey Wastewater Using Magnesium Anodes

Applied Sciences
Phosphorus recovery from wastewater as struvite via electrochemical magnesium dosing is a promising approach to address the growing demand for fertilizers. However, its large-scale implementation is often constrained by energy requirements.
Vasco B. Fernandes, Daliany M. Farinon, Annabel Fernandes, Jefferson E. Silveira, Albertina Amaro, Juan A. Zazo, Carlos Y. Sousa   +6 more
doaj   +1 more source

Removal of contaminants from liquid after the hydrothermal carbonization of sewage sludge using a combination of membrane techniques and struvite precipitation

Water Resources and Industry
Post-processing liquid (HTCL), generated from the hydrothermal carbonization (HTC) of sewage sludge, is a highly organic by-product and one of the primary challenges of this technology.
Klaudia Szkadłubowicz, Agnieszka Urbanowska, Maciej Śliz, Izabela Kalemba-Rec, Małgorzata Wilk   +4 more
doaj   +1 more source

Removal of Phosphorus in Rubber Wastewater – Design of Experiment for the Struvite Crystallization Reaction

Chemical Engineering Transactions, 2019
Recovering struvite crystal is one of the most interesting methods for removing phosphorus from wastewater to produce fertilizer. Phosphorus is removed from wastewater streams to prevent the ecologically harmful effects of eutrophication in receiving ...
Ngo Van Thanh Huy, Tran Minh Chi, Truc Linh Phan, Anhkien Le   +3 more
doaj   +1 more source

The Effect of Citrate and Phosphocitrate On Struvite Spontaneous Precipitation

Crystal Growth & Design, 2007
The effect of citrate and phosphocitrate ions on the spontaneous precipitation of magnesium ammonium phosphate hexahydrate (MgNH4PO4·6H2O, struvite) at pH 8.50 and 25 °C was investigated at conditions of constant solution supersaturation. The supersaturated solutions were prepared in synthetic wastewater.
Aikaterini N. Kofina, Konstantinos D. Demadis, Petros G. Koutsoukos   +2 more
openaire   +1 more source