Phosphogypsum biotransformation by aerobic bacterial flora and isolated Trichoderma asperellum from Tunisian storage piles

Jalali, Jihen; Magdich, Salwa; Jarboui, Raja; Loungou, Mouna; Ammar, Emna

doi:10.1016/j.jhazmat.2016.01.063

Cited by 17 publications

(9 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In order to reduce the amount of stockpiled PG and related trace metals, different biotechnological methods have been recently proposed (Wolicka, 2008 ; Jalali et al, 2016 ; Martins et al, 2016 ). Among them, the anaerobic bio-treatment of PG using pure or mixed cultures of sulfate-reducing bacteria (SRB) grown on simple or complex substrates, such as organic industrial and agricultural wastes has been reported (Azabou et al, 2005 ; Rzeczycka and Blaszczyk, 2005 ; Wolicka, 2008 ; Martins et al, 2016 ).…”

Section: Introductionmentioning

confidence: 99%

Microbial Diversity in Sulfate-Reducing Marine Sediment Enrichment Cultures Associated with Anaerobic Biotransformation of Coastal Stockpiled Phosphogypsum (Sfax, Tunisia)

et al. 2017

View full text Add to dashboard Cite

Anaerobic biotechnology using sulfate-reducing bacteria (SRB) is a promising alternative for reducing long-term stockpiling of phosphogypsum (PG), an acidic (pH ∼3) by-product of the phosphate fertilizer industries containing high amounts of sulfate. The main objective of this study was to evaluate, for the first time, the diversity and ability of anaerobic marine microorganisms to convert sulfate from PG into sulfide, in order to look for marine SRB of biotechnological interest. A series of sulfate-reducing enrichment cultures were performed using different electron donors (i.e., acetate, formate, or lactate) and sulfate sources (i.e., sodium sulfate or PG) as electron acceptors. Significant sulfide production was observed from enrichment cultures inoculated with marine sediments, collected near the effluent discharge point of a Tunisian fertilizer industry (Sfax, Tunisia). Sulfate sources impacted sulfide production rates from marine sediments as well as the diversity of SRB species belonging to Deltaproteobacteria. When PG was used as sulfate source, Desulfovibrio species dominated microbial communities of marine sediments, while Desulfobacter species were mainly detected using sodium sulfate. Sulfide production was also affected depending on the electron donor used, with the highest production obtained using formate. In contrast, low sulfide production (acetate-containing cultures) was associated with an increase in the population of Firmicutes. These results suggested that marine Desulfovibrio species, to be further isolated, are potential candidates for bioremediation of PG by immobilizing metals and metalloids thanks to sulfide production by these SRB.

show abstract

Section: Introductionmentioning

confidence: 99%

Microbial Diversity in Sulfate-Reducing Marine Sediment Enrichment Cultures Associated with Anaerobic Biotransformation of Coastal Stockpiled Phosphogypsum (Sfax, Tunisia)

et al. 2017

View full text Add to dashboard Cite

show abstract

“…3). These phases have also been identified in various phosphogypsum samples by various researchers (Roode & Strydom, 1999; Jalali et al , 2016, Tian et al , 2016). The XRD trace of PG1P is typical of pure gypsum (Fig.…”

Section: Resultsmentioning

confidence: 71%

“…The PG1 and PG2 samples contain large amounts of Ca, S and O, as expected for the calcium sulfate-based material. The major impurity is Si, followed by small amounts of P, Al, Fe and Sr, which are typical of phosphogypsum from various deposits around the world (Jalali et al , 2016; Zhou et al , 2016; Kandil et al , 2017).…”

Section: Resultsmentioning

confidence: 99%

Refinement of waste phosphogypsum from Prahovo, Serbia: characterization and assessment of application in civil engineering

et al. 2020

View full text Add to dashboard Cite

Two samples collected from the phosphogypsum deposits of the chemical products industry Elixir Prahovo (Serbia) were subjected to a recrystallization experiment performed over several repeated cycles. In these tests, phosphogypsum was separated into recrystallized (purified) gypsum, insoluble residue and supernatant. Both raw phosphogypsum and recrystallized gypsum were examined using inductively coupled plasma optical emission spectrometry, X-ray diffraction and scanning electron microscopy with energy-dispersive spectrometry. The activity concentrations of 238U, 235U, 226Ra, 210Pb, 232Th and 40K were investigated using γ-ray spectrometry. Based on the activity concentration results, a number of radiometric parameters were calculated for the original and recrystallized phosphogypsum (i.e. radium equivalent activity, γ indices for construction materials, α index and external and internal hazard indices). Raw phosphogypsum samples showed greater mean activity concentration levels of 238U and 226Ra than the international recommended limits, while the recrystallized gypsum demonstrated notably lower activity concentrations for these two isotopes. The activity concentration of 226Ra in recrystallized gypsum is ~6 times lower than in raw phosphogypsum. Therefore, recrystallized gypsum does not present a radiation hazard when used as a building material, while raw phosphogypsum meets the requirements only for road construction materials.

show abstract

“…Main constituent of PG is CaSO 4 Á2H 2 O [26], which breaks down into CaO in a high temperature decomposition procedure of PG [27,28]. Main constituent of PG is CaSO 4 Á2H 2 O [26], which breaks down into CaO in a high temperature decomposition procedure of PG [27,28].…”

Section: Experimental Materialsmentioning

confidence: 99%

“…PG is supplied by Fu-rui Chemical of YUNTIANHUA. Main constituent of PG is CaSO 4 Á2H 2 O [26], which breaks down into CaO in a high temperature decomposition procedure of PG [27,28]. Contents and chemical components of elements in PG decomposition residue were analyzed using Energy Dispersive Spectrometer (EDS) and X-ray Diffraction (XRD), and the results are shown in Table 1.…”

Section: Experimental Materialsmentioning

confidence: 99%

Analyses on the application of components in the phosphogypsum decomposition residue: Based on the study of migration and conversion rules of elements in the purification procedure of CaO

Dai

Xie

et al. 2017

Env Prog and Sustain Energy

View full text Add to dashboard Cite

Phosphogypsum (PG), which is a solid waste in phosphate fertilizer industry, is harmful to the environment. The pyrogenetic decomposition is mainly used in the utilization of PG, and PG decomposition residue is produced in the decomposition process. In this paper, the migration and conversion rules of elements (Al, Si, P, K, Ca, and Fe) in the purification procedure of CaO in PG decomposition residue was investigated. The acid–base method was used to purify CaO. Content and chemical forms of elements in the purification procedure were analyzed by many characterization methods such as SEM and EDS. And moreover, changes on chemical forms of elements were supported theoretically by some ternary phase diagrams, which were made by the FactSage thermodynamics software. The result showed that, the soluble silicon dioxide and the acid‐insoluble material in PG decomposition residue were effectively removed by using the acid–base method. Meanwhile, impurities separated from CaO and the CaO sample were produced in the experiment, the former can be used to produce the building materials, refractories, insulating materials in various industrial fields, and CaO sample could be used as the filler, building materials, decolorant, etc. © 2017 American Institute of Chemical Engineers Environ Prog, 37: 1020–1030, 2018

show abstract

Phosphogypsum biotransformation by aerobic bacterial flora and isolated Trichoderma asperellum from Tunisian storage piles

Cited by 17 publications

References 48 publications

Microbial Diversity in Sulfate-Reducing Marine Sediment Enrichment Cultures Associated with Anaerobic Biotransformation of Coastal Stockpiled Phosphogypsum (Sfax, Tunisia)

Microbial Diversity in Sulfate-Reducing Marine Sediment Enrichment Cultures Associated with Anaerobic Biotransformation of Coastal Stockpiled Phosphogypsum (Sfax, Tunisia)

Refinement of waste phosphogypsum from Prahovo, Serbia: characterization and assessment of application in civil engineering

Analyses on the application of components in the phosphogypsum decomposition residue: Based on the study of migration and conversion rules of elements in the purification procedure of CaO

Contact Info

Product

Resources

About