Humic acid removal

Xem 1-4 trên 4 kết quả Humic acid removal

Ferrihydrite/ultrasound activated peroxymonosulfate for humic acid removal

In this study, ferrihydrite/ultrasound (US) system was used to activate peroxymonosulfate (PMS) to treat humic acid (HA) in artificial aqueous. The physical and chemical properties of ferrihydrite were characterized using SEM, zeta potential, BET, XRD, FTIR, and XPS analysis. A series of experiments were conducted to evaluate the effect of various factor on HA removal, including dosage of ferrihydrite, PMS concentration and pH value.

14p lyhuyenthu 31-01-2023 6 2 Download

Insight into electrochemical degradation of Cartap (in Padan 95SP) by boron-doped diamond electrode: kinetic and effect of water matrices

In this work, the kinetic electrochemical degradation of Cartap (CT) (in Padan 95 SP) at boron-doped diamond (BDD) electrode was investigated. This study indicated that the degradation of CT underwent both direct and indirect oxidations. Water matrices can either accelerate or inhibit the removal efficiency of CT: adding 15 mM Cl- improved kCT from 0.039 min–1 to 0.054 min–1 (increased by 38%), while kCT decreased by 61.5% and 64% when increasing the concentration of HCO3 - and humic acid (HA) to 15 mM and 15 mg L–1, respectively.

21p lyhuyenthu 31-01-2023 6 2 Download

Residual and cumulative effects of organic and inorganic P on economics of soybean (Glycine max L.) - Onion (Allium cepa L.) cropping sequence in a high P alfisol

A field experiment was conducted during kharif (soybean), 2012 and rabi (onion) 2012-13 in a sandy clay loam soils of college farm, College of Agriculture, Rajendranagar, Hyderabad to study the response of P levels (0, 30 and 60 kg P2O5 ha-1 ) either alone or in combination with PSB @ 5 kg ha-1 , biochar @ 5 t ha-1 , humic acid @ 20 kg ha-1 and citric acid @ 10 mM concentration to study the direct, residual and cumulative effects of the treatments imposed on yield of soybean (direct) and onion (Residual and Cumulative), soybean equivalent yield (Residual and Cumulative) and benefit : cost r...

12p trinhthamhodang1213 30-05-2020 10 1 Download
Influence of different extraction and fractionation periods on humic acid yield derived from pressmud and vermicompost

$Influence of different extraction and fractionation periods on humic acid yield derived from pressmud and vermicompost$

Humic acids (HA) are widely used in agriculture because of their capability as chelator, organic matter, and soil improver and growth promoter. However, their isolation differs in terms of origin or source because of wetting and solubilisation factors. This study was conducted to determine extraction period for HA from organic sources. Standard procedures were used to extract HA from pressmud (PM) and vermicompost (VC) at different extraction periods of 4, 8, 12, 16, 20 and 24 hours and fractionation periods (3, 6, 9, 12, 15, 18, 21& 24 hrs).

7p nguaconbaynhay3 07-02-2020 30 0 Download