Removal of mo, se, u, as and v oxyanions from saline groundwater and agricultural drainage water by activated tebinbulak titanomagnetite: dose–response behaviour, selectivity sequence and the role of the alkaline pre-treatment reagent

Ergashevich, Ergashev Muhsinjon, Mehriqulovich , Shodiqulov Jurabek, Alouddinovich, Doniyorov Kamoliddin

Innovative Multidisciplinary Journal of Applied Technology · 2025-yil

Annotatsiya

Drainage and shallow groundwater of the Kyzylkum region (Uzbekistan) carry molybdenum, uranium and selenium at 1.1–14 times the FAO/WHO irrigation guidelines in a sulphate–chloride matrix of 8.2–8.5 g L⁻¹ dry residue. This study quantifies the batch removal of Mo, Se, U, As and V oxyanions from two such waters by a sorbent made from Tebinbulak titanomagnetite ore, after alkaline pre-treatment with KOH, NH₃ or Ca(OH)₂ to pH 7.5–8.0, over seven sorbent doses (0.5–10 g L⁻¹). Rather than reporting removal percentages alone, the 42 dose–response curves were reduced to a first-order saturation model η = ηmax(1 − e−kD) (R² ≥ 0.999), whose rate constant k (L g⁻¹) and derived characteristic doses D₅₀ = ln2/k and D₉₀ = ln10/k provide a compact, reagent- and element-specific description. k ranked the oxyanions in the invariant order As > V > Mo > U > Se (0.94, 0.81, 0.70, 0.62, 0.54 L g⁻¹ after KOH) and the pre-treatment reagents in the order Ca(OH)₂ > KOH > NH₃ (for Mo: 0.88, 0.70, 0.55 L g⁻¹), so that D₉₀ ranged from 1.9 g L⁻¹ (As, lime) to 5.2 g L⁻¹ (Se, ammonia). The two waters gave the same removal fractions within the 1 % resolution of the data, their difference lying in residual concentrations: molybdenum (initial 140 µg L⁻¹) limits the groundwater and requires 4 g L⁻¹ after lime, 6 g L⁻¹ after KOH and 10 g L⁻¹ after ammonia to meet the FAO limit of 10 µg L⁻¹, whereas uranium limits the drainage water and is met at 2 g L⁻¹. Specific uptake fell from 55–80 to 11 µg Mo g⁻¹ across the dose range, marking 6 g L⁻¹ as the point beyond which sorbent is wasted. A dose window of 4–6 g L⁻¹ with lime pre-treatment is recommended for returning both waters to irrigation.

Maqola ma’lumotlari
MualliflarErgashevich, Ergashev Muhsinjon, Mehriqulovich , Shodiqulov Jurabek, Alouddinovich, Doniyorov Kamoliddin
JurnalInnovative Multidisciplinary Journal of Applied Technology
NashriyotТДТУ Қўқон филиали
ISSN2995-486X
Nashr sanasi2025-11-25
Jild3
Son11
Betlar128-140
TilIngliz
DOI10.51699/2y4aa407
Indeksga qo‘shilgan2026-10-29

DOI: 10.51699/2y4aa407 · Maqolaning asl sahifasi

Kalit so‘zlar

oxyanions, molybdenum, uranium, selenium, arsenic, vanadium, titanomagnetite, dose–response model, alkaline pre-treatment, drainage water reuse

Iqtibos keltirish

APAErgashevich, Ergashev Muhsinjon, Mehriqulovich , Shodiqulov Jurabek, & Alouddinovich, Doniyorov Kamoliddin (2025). REMOVAL OF MO, SE, U, AS AND V OXYANIONS FROM SALINE GROUNDWATER AND AGRICULTURAL DRAINAGE WATER BY ACTIVATED TEBINBULAK TITANOMAGNETITE: DOSE–RESPONSE BEHAVIOUR, SELECTIVITY SEQUENCE AND THE ROLE OF THE ALKALINE PRE-TREATMENT REAGENT. Innovative Multidisciplinary Journal of Applied Technology, 3(11), 128-140. https://doi.org/10.51699/2y4aa407
GOST (OAK)Ergashevich, Ergashev Muhsinjon, Mehriqulovich , Shodiqulov Jurabek, Alouddinovich, Doniyorov Kamoliddin REMOVAL OF MO, SE, U, AS AND V OXYANIONS FROM SALINE GROUNDWATER AND AGRICULTURAL DRAINAGE WATER BY ACTIVATED TEBINBULAK TITANOMAGNETITE: DOSE–RESPONSE BEHAVIOUR, SELECTIVITY SEQUENCE AND THE ROLE OF THE ALKALINE PRE-TREATMENT REAGENT // Innovative Multidisciplinary Journal of Applied Technology. – 2025. – T. 3, № 11. – P. 128-140. – DOI: 10.51699/2y4aa407.
MLAErgashevich, Ergashev Muhsinjon, Mehriqulovich , Shodiqulov Jurabek, and Alouddinovich, Doniyorov Kamoliddin. “REMOVAL OF MO, SE, U, AS AND V OXYANIONS FROM SALINE GROUNDWATER AND AGRICULTURAL DRAINAGE WATER BY ACTIVATED TEBINBULAK TITANOMAGNETITE: DOSE–RESPONSE BEHAVIOUR, SELECTIVITY SEQUENCE AND THE ROLE OF THE ALKALINE PRE-TREATMENT REAGENT.” Innovative Multidisciplinary Journal of Applied Technology, 3(11), 128-140, 2025. https://doi.org/10.51699/2y4aa407
ChicagoErgashevich, Ergashev Muhsinjon, Mehriqulovich , Shodiqulov Jurabek, and Alouddinovich, Doniyorov Kamoliddin. “REMOVAL OF MO, SE, U, AS AND V OXYANIONS FROM SALINE GROUNDWATER AND AGRICULTURAL DRAINAGE WATER BY ACTIVATED TEBINBULAK TITANOMAGNETITE: DOSE–RESPONSE BEHAVIOUR, SELECTIVITY SEQUENCE AND THE ROLE OF THE ALKALINE PRE-TREATMENT REAGENT.” Innovative Multidisciplinary Journal of Applied Technology, 3(11), 128-140 (2025). https://doi.org/10.51699/2y4aa407
HarvardErgashevich, Ergashev Muhsinjon, Mehriqulovich , Shodiqulov Jurabek, and Alouddinovich, Doniyorov Kamoliddin (2025) ‘REMOVAL OF MO, SE, U, AS AND V OXYANIONS FROM SALINE GROUNDWATER AND AGRICULTURAL DRAINAGE WATER BY ACTIVATED TEBINBULAK TITANOMAGNETITE: DOSE–RESPONSE BEHAVIOUR, SELECTIVITY SEQUENCE AND THE ROLE OF THE ALKALINE PRE-TREATMENT REAGENT’, Innovative Multidisciplinary Journal of Applied Technology, 3(11), 128-140. https://doi.org/10.51699/2y4aa407
BibTeX
@article{ergashevichergashevmuhsinjon2025,
  title = {REMOVAL OF MO, SE, U, AS AND V OXYANIONS FROM SALINE GROUNDWATER AND AGRICULTURAL DRAINAGE WATER BY ACTIVATED TEBINBULAK TITANOMAGNETITE: DOSE–RESPONSE BEHAVIOUR, SELECTIVITY SEQUENCE AND THE ROLE OF THE ALKALINE PRE-TREATMENT REAGENT},
  author = {Ergashevich, Ergashev Muhsinjon and Mehriqulovich , Shodiqulov Jurabek and Alouddinovich, Doniyorov Kamoliddin},
  journal = {Innovative Multidisciplinary Journal of Applied Technology},
  year = {2025},
  volume = {3},
  number = {11},
  pages = {128-140},
  doi = {10.51699/2y4aa407},
  url = {https://doi.org/10.51699/2y4aa407}
}

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