scholarly journals Stabilization of Leachate Effected Laterite Soil using Bio-Enzyme(Terrazyme)

2020 ◽  
Vol 8 (5) ◽  
pp. 4195-4203
Keyword(s):  
Particle Size ◽  
Soil Compaction ◽  
Ph Value ◽  
Particle Size Analysis ◽  
California Bearing Ratio ◽  
Size Analysis ◽  
High Concentration ◽  
Effective Technique ◽  
Corrosive Liquid ◽  
Properties Of Soil

The present study provides an effective technique of improving properties of leachate effected soil using bio-enzyme named TERRAZYME.Soil pollution is an consequence especially in a country like INDIA unscientific disposal and dumping of solid waste leads to generation of leachate. High concentration of leachate has less pH value (i.e., acidic in nature) which reduces the particle size. Due to reduction in particle size the properties of soil are also effected. A laboratory testing program was carried out on soil to determine the behavior of leachate effected soil and terrazyme. For that we performed particle size analysis, compaction and California bearing ratio tests on 5% 10% and 15% leachate effected soil to vary the degree of contamination.Terrazyme is a natural non-toxic, non-flammable, non-corrosive liquid enzyme formulated fermented from vegetables that improves the engineering qualities of soil, facilitates higher soil compaction densities and increases stability. It can be used as soil stabilizer and also improve CBR value, durability and decreases the omc, plasticity index of soil. Terrazyme on soil is permanent and soil becomes biodegradable in nature.So we used terrazyme as a stabilizing agent to improve the properties of leachate effected soil. By using this enzyme we can improve the strength effectively, mainly California bearing ratio

scholarly journals Characterization of Nanosilver Biosynthesis by Citrus sinensis (L.) Osbeck and Peel-off Mask Formulation with Variation Polyethylene Glycol 400-Glycerin Concentration

2022 ◽  
Vol 1 ◽  
pp. 47
Author(s):  
Dian Eka Ermawati ◽  
Agung P. Surya ◽  
Adi Yugatama
Keyword(s):  
Particle Size ◽  
Polyethylene Glycol ◽  
Physicochemical Properties ◽  
Citrus Sinensis ◽  
Ph Value ◽  
Particle Size Analysis ◽  
Size Analysis ◽  
Polyethylene Glycol 400 ◽  
Peg 400

Sweet orange contains flavonoids and citric acid that have the potential as a capping agent in the nanosilver biosynthesis process. The antibacterial activity of silver can be increased in nanoparticles, then it can be applied to treat acne through a peel-off mask preparation. Glycerin and Polyethylene glycol 400 are humectants that combined to obtain good physicochemical properties of the preparation. This study aims to determine the character of nanosilver biosynthesis and the effect of humectant combination on the physicochemical properties of the preparation. The characterization of nanosilver was employed by UV-VIS Spectrophotometry, Particle Size Analysis, and Scanning Electron Microscope. The Glycerin- PEG 400 combination was F1 (0:100%); F2 (25:75%); F3 (50:50%); F4 (75:25%) and F5 (100:0%). The results of nanosilver biosynthesis have an absorption peak of nanoparticles at 421-423nm, rod shape, the particle size of 83.2±7.2nm. Statistical analysis showed that the combination of Glycerin- PEG 400 had a significant effect on organoleptic, viscosity, and dry time, but did not affect the pH of preparation. The combination of Glycerin-PEG 400 (75%:25%) is the best formula because it has stable viscosity, dry time, and pH value during storage for four weeks.Keywords: nanosilver, biosynthesis, Citrus sinensis, humectants, peel off mask

scholarly journals Application of PAC and flocculants for improving settling of solid particles in oilfield wastewater with high salinity and Ca2+

2017 ◽  
Vol 76 (6) ◽  
pp. 1399-1408 ◽  
Author(s):  
Guoliang Liu ◽  
Fusheng Zhang ◽  
Yuanzhi Qu ◽  
He Liu ◽  
Lun Zhao ◽  
...  
Keyword(s):  
Particle Size ◽  
Calcium Ion ◽  
Suspended Solids ◽  
High Salinity ◽  
Particle Size Analysis ◽  
Solid Particles ◽  
Size Analysis ◽  
High Concentration ◽  
Particle Settling ◽  
High Calcium

The suspended solids in wastewater from Rekabak oilfield, Kazakhstan, were characterized and treated with flocculants to enhance settling. The wastewater contained a high concentration of total dissolved solids and calcium ion. Scanning electron microscopy and energy dispersive X-ray analyses showed that suspended solids were mainly composed of corrosion products (iron oxides) and silicon dioxide particles. Also, much salt deposition from wastewater caused a large increase in the suspended solids value. The settling of solid particles in wastewater was investigated by turbidity decrease within 60 min. The particle settling was enhanced by adding polyaluminum chloride (PAC) as coagulant and hydrolyzed polyacryamide (HPAM) or cationic polyacrylamide (CPAM) as flocculant. At optimal dose, the particle settling ability with PAC and CPAM was better than that with PAC and HPAM. Particle size analysis showed that HPAM or CPAM with high molecular weight played an important role for enlarging the particle size. The experiments with simulated wastewater showed that particle settling by using HPAM deteriorated significantly compared to that by CPAM at high calcium ion. This study provides further understanding about the effect of high salinity and Ca2+ on solids formation, flocculant performance and particle settling. Meanwhile, the results are also helpful to develop novel flocculants used for high salinity wastewater.

Adsorption of Congo Red from Aqueous Solution Using La/MFA Composite as Adsorbent

2019 ◽  
Vol 944 ◽  
pp. 1117-1122
Author(s):  
Bei Gang Li ◽  
Xiao Hong Lin
Keyword(s):  
Aqueous Solution ◽  
Particle Size ◽  
Congo Red ◽  
Particle Size Analysis ◽  
Size Analysis ◽  
Maximum Adsorption Capacity ◽  
Order Kinetic ◽  
High Concentration ◽  
Composite Adsorbent ◽  
Different Temperatures

A novel lanthanum/modified fly ash (La/MFA) composite adsorbent prepared by simple solution reaction was used for the adsorption of Congo Red (CR) dye from aqueous solution. The morphology and particle size distribution of the composite were characterized, and the equilibrium adsorption was researched. The results show that the adsorption of CR onto La/MFA can reach equilibrium in 30 minutes. The entire adsorption process can be well described by pseudo-second-order kinetic equation at different temperatures. The value of apparent adsorption activation energy is 16.2kJ/mol. The isothermal data conform to the Langmuir model with the maximum adsorption capacity of 714 mg/g at 298K. According to the negative values of Gibbs free energy change (ΔG°) and enthalpy change (ΔH°), and reduction of Langmuir adsorption coefficient with the increase of temperature, the adsorption system from 298K to 328K is confirmed to be of spontaneous and exothermic nature. The results of SEM and particle size analysis indicate that the particle sizes and specific surface of La/MFA are smaller and coarser than those of FA. As a low-value composite adsorbent, La/MFA is especially effective for the removal of high concentration CR.

APSAS; an Automated Particle Size Analysis System

Circular ◽  
1985 ◽  
Author(s):  
Lawrence J. Poppe ◽  
A.H. Eliason ◽  
J.J. Fredericks
Keyword(s):  
Particle Size ◽  
Particle Size Analysis ◽  
Size Analysis ◽  
Analysis System
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