The citric acid leaching of boron process wastes

Yoğurtcuoğlu, Emine

doi:10.1080/00084433.2022.2131132

Cited by 3 publications

(3 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As a result of a study in which a heap leaching experiment was performed with the same acid (4.7% H2SO4), the %B2O3 recovery efficiency was approximately 80% [20]. In the experiments investigated for these wastes, organic acids with citric acid at 8-12% solid ratios, 40-98℃ temperatures, 20-66 minutes, and 0.15-0.45M acid concentrations, recoveries in the range of 60-95% were achieved [37,38]. A result of approximately 90% was also possible in the studies conducted for the recovery of B2O3 with acetic acid (2-22% concentrations) from wastes [11].…”

Section: Recovery Results Of B2o3%mentioning

confidence: 99%

Recovery of Boron Wastes With Inorganic Acid

Yoğurtcuoğlu

2024

Eskişehir Technical University Journal of Science and Technology a - Applied Sciences and Engineering

Self Cite

View full text Add to dashboard Cite

Approximately 73-74% of boron mineral reserves all over the world are located in the Western Anatolian region of Turkey, in the provinces of Eskişehir, Kütahya, Balıkesir, and Bursa. The most intense minerals extracted from these fields are colemanite, ulexite, and tincal minerals, respectively. The general principle in the recovery of these minerals is to extract the raw ore and obtain it by size reduction processes of concentrates in high grade. In addition to concentrates, boric acid (H3BO3) production is also possible in Balıkesir and Kütahya. The production of this acid in question includes a series of processes from dissolution with sulfuric acid at high temperatures to crystallization. In this study, except for the aforementioned high concentrations, boron recovery from clay waste, which is high in boron content and is collected from plant waste ponds, is investigated. For this purpose, ulexite-colemanite-containing slime wastes of the Bigadiç (Balıkesir) Plant were dissolved in 7% solids at 60°C in different sulfuric acid concentrations (1-6% H2SO4) and were obtained with 83-97% B2O3 recovery. When the boron wastes are evaluated, issues such as the discovery and establishment of a new waste pond/dam will be solved, the valuable content in the wastes will be recovered, and the environmental problems of boron and other contents in clay will be eliminated. This article includes information about the characterization of the structure by considering the dissolution of boron and other compounds, as well as obtaining boric acid from inorganic acid and boron wastes.

show abstract

Section: Recovery Results Of B2o3%mentioning

confidence: 99%

Recovery of Boron Wastes With Inorganic Acid

Yoğurtcuoğlu

2024

Eskişehir Technical University Journal of Science and Technology a - Applied Sciences and Engineering

Self Cite

View full text Add to dashboard Cite

show abstract

“…Citric Acid Zn>Cr>Pb>Mn>Fe (10) Similarly, in these experiments, it is seen that the most intense zinc is recovered, followed by lead and finally iron. In addition, less recovery of iron in the recovery of precious metals such as lead, zinc and silver is a result of the selective behavior of organic acids [10,11,37,38].…”

Section: The Effect Of Nacl Concentrationmentioning

confidence: 99%

MULTI-METAL RECOVERY FROM FLOTATION TAILINGS WITH CITRIC ACID ON THE NACl MEDIA

Yoğurtcuoğlu

2023

Journal of Scientific Reports-A

Self Cite

View full text Add to dashboard Cite

After the flotation process of oxidized lead-zinc ores, the high amount of metal (especially zinc metal) in its content cannot be recovered and is stored as waste. Ore and (therefore) tailings are found together with gangue minerals such as calcite, and dolomite, which are oxide/carbonate minerals. Precious minerals are zinc, lead, silver, and iron-containing minerals such as smithsonite, hydrozincite, plumbojarosite, and goethite. The particle size of the sample taken from this waste was determined as d80= 78.22µm. In order to recover these ore wastes with high metal content, the dissolution of citric acid, which is a weak organic acid, in NaCl medium was investigated. When the study was examined at a concentration of 0.5 M citric acid and 200 g/L NaCl, for 1 hour at 60 ℃, 10% solids, it was found that 66.85% Zn, 56.53% Pb, 40.68% Ag, and 27.74% Fe were dissolved. According to the results of this experiment, keeping each of these parameters constant, 0.125-1 M citric acid, 50-400 g/L NaCl, 15-120 minutes leaching time, 25-95 ℃ leaching temperature, and 5-40% solids metal. The efficiency of the gain yields was tried to be determined. When the final results are examined, there are 60-80% zinc, 40-70% lead, 0.01-35% iron, and 11-83% silver recovery efficiencies. In light of these results, it is thought that industrial-scale improvements in multi-metal recovery from oxidized ore wastes may improve positive results.

show abstract

“…In particular, recycling processes have many advantages. Some of these advantages are reducing the environmental impact of harmful components in waste (Kaya et al, 2020), recycling valuable ingredients such as zinc (Alkan et al, 2023), and reducing the need for the landfill processing of fine-sized waste (Mikula et al, 2022;Yoğurtcuoğlu, 2023a).…”

Section: Introductionmentioning

confidence: 99%

Characterization of the effects of acetic acid on the recovery of valuable contents from flotation tailings of non-sulfide metals

Yoğurtcuoğlu

2024

Physicochem. Probl. Miner. Process.

View full text Add to dashboard Cite

Non-sulfide lead flotation tailings draw attention in terms of their valuable contents. Dissolution studies have been carried out with strong inorganic acids, especially in ore form, but these acids have been unfavorable in removal in the context of metal recovery processes. Organic acids, on the other hand, are notable for their environmentally friendly properties and selective metal recovery opportunities. In this study, the effects of acetic acid on metal recovery from oxidized waste were investigated with different experimental parameters at a laboratory scale. Optimal conditions were determined depending on the increase in acetic acid concentration. At 0.75-1.0 M acid concentrations, 49-55% Pb and 49-54% Zn recovery efficiencies were obtained with grades of 7.0-7.2% and 19.5-19.7%, respectively. The recovery of Pb/Zn by the leaching process with acetic acid and the selective non-recovery of iron were also observed through characterization studies. With the Rietveld XRD method, an increase in iron minerals such as goethite and a decrease in smithsonite-hydrozincite minerals were determined. These changes were seen as a decrease in the contents of these minerals in SEM/EDX analysis and as a decrease in smithsonite mineral bond structures in the FT-IR analysis. This study showed that acetic acid has many advantages in the utilization of zinc-lead-containing oxide flotation tailings, which have high economic value, such as selective metal recovery, easy biodegradability, environmental friendliness, and non-corrosiveness.

show abstract

The citric acid leaching of boron process wastes

Cited by 3 publications

References 43 publications

Recovery of Boron Wastes With Inorganic Acid

Recovery of Boron Wastes With Inorganic Acid

MULTI-METAL RECOVERY FROM FLOTATION TAILINGS WITH CITRIC ACID ON THE NACl MEDIA

Characterization of the effects of acetic acid on the recovery of valuable contents from flotation tailings of non-sulfide metals

Contact Info

Product

Resources

About