Arsenic as a contaminant of struvite when recovering phosphorus from phosphogypsum wastewater

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43510%2F21%3A43920402" target="_blank" >RIV/62156489:43510/21:43920402 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.jtice.2021.10.005" target="_blank" >https://doi.org/10.1016/j.jtice.2021.10.005</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jtice.2021.10.005" target="_blank" >10.1016/j.jtice.2021.10.005</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Arsenic as a contaminant of struvite when recovering phosphorus from phosphogypsum wastewater

Popis výsledku v původním jazyce

Background: Phosphogypsum is a waste product from production of phosphorus and is stored in a containment pond. Phosphogypsum wastewater still contains a usable amount of phosphorus. In addition to phosphorus, this water contains a small amount of arsenic, which prevents direct use of this water in agriculture. Method: Recycling of phosphorus from phosphogypsum wastewater was performed by struvite (NH4MgPO4 6H2O), precipitation. Arsenostruvite (NH4MgAsO4 6H2O) has always occurred naturally in the presence of struvite. The properties of arsenostruvite in comparison with struvite were monitored. The effect of selected reductants (SnCl2, ascorbic acid, K2S2O5) on the potential of reducing the concentration of As in the struvite crystallized from phosphogypsum wastewater, was monitored. Findings: When recovering phosphorus from phosphogypsum wastewater in the form of struvite the results showed that a ratio of As to P was lower by 50% compared to the original wastewater. K2S2O5 proved to be the most effective reducing agent for reducing the arsenic content of the product, but it was still not sufficient for the product to be used as a fertilizer without any further treatment. Method: Recycling of phosphorus from phosphogypsum wastewater was performed by struvite (NH4MgPO4.6H2O), precipitation. Arsenostruvite (NH4MgAsO4.6H2O) has always occurred naturally in the presence of struvite. The properties of arsenostruvite in comparison with struvite were monitored. The effect of selected reductants (SnCl2, ascorbic acid, K2S2O5) on the potential of reducing the concentration of As in the struvite crystallized from phosphogypsum wastewater, was monitored. Findings: When recovering phosphorus from phosphogypsum wastewater in the form of struvite the results showed that a ratio of As to P was lower by 50% compared to the original wastewater. K2S2O5 proved to be the most effective reducing agent for reducing the arsenic content of the product, but it was still not sufficient for the product to be used as a fertilizer without any further treatment.

Název v anglickém jazyce

Arsenic as a contaminant of struvite when recovering phosphorus from phosphogypsum wastewater

Popis výsledku anglicky

Background: Phosphogypsum is a waste product from production of phosphorus and is stored in a containment pond. Phosphogypsum wastewater still contains a usable amount of phosphorus. In addition to phosphorus, this water contains a small amount of arsenic, which prevents direct use of this water in agriculture. Method: Recycling of phosphorus from phosphogypsum wastewater was performed by struvite (NH4MgPO4 6H2O), precipitation. Arsenostruvite (NH4MgAsO4 6H2O) has always occurred naturally in the presence of struvite. The properties of arsenostruvite in comparison with struvite were monitored. The effect of selected reductants (SnCl2, ascorbic acid, K2S2O5) on the potential of reducing the concentration of As in the struvite crystallized from phosphogypsum wastewater, was monitored. Findings: When recovering phosphorus from phosphogypsum wastewater in the form of struvite the results showed that a ratio of As to P was lower by 50% compared to the original wastewater. K2S2O5 proved to be the most effective reducing agent for reducing the arsenic content of the product, but it was still not sufficient for the product to be used as a fertilizer without any further treatment. Method: Recycling of phosphorus from phosphogypsum wastewater was performed by struvite (NH4MgPO4.6H2O), precipitation. Arsenostruvite (NH4MgAsO4.6H2O) has always occurred naturally in the presence of struvite. The properties of arsenostruvite in comparison with struvite were monitored. The effect of selected reductants (SnCl2, ascorbic acid, K2S2O5) on the potential of reducing the concentration of As in the struvite crystallized from phosphogypsum wastewater, was monitored. Findings: When recovering phosphorus from phosphogypsum wastewater in the form of struvite the results showed that a ratio of As to P was lower by 50% compared to the original wastewater. K2S2O5 proved to be the most effective reducing agent for reducing the arsenic content of the product, but it was still not sufficient for the product to be used as a fertilizer without any further treatment.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

40106 - Agronomy, plant breeding and plant protection; (Agricultural biotechnology to be 4.4)

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of the Taiwan Institute of Chemical Engineers

ISSN

1876-1070

e-ISSN

—

Svazek periodika

129

Číslo periodika v rámci svazku

December

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

6

Strana od-do

91-96

Kód UT WoS článku

000730177100008

EID výsledku v databázi Scopus

2-s2.0-85117214380