scholarly journals Optimization Approach for Solvent Extraction Process of Oily Contaminated Soil with Addition of Biosurfactant

2021 ◽  
Vol 43 (2) ◽  
pp. 117-124
Author(s):  
Lely Fitriyani ◽  
Edwan Kardena ◽  
Sukandar ◽  
Qomarudin Helmy
Keyword(s):  
Statistical Analysis ◽  
Solvent Extraction ◽  
Contaminated Soil ◽  
Extraction Process ◽  
Optimization Approach ◽  
Oil Removal ◽  
Original Performance ◽  
Soil Matrix ◽  
Mixing Method ◽  
Soil Residue

Objectives : Solvent extraction is a process in which not only enable to reduce oil contaminant from soil residue, but also capable to recover oil from soil matrix of oily contaminated soil which has opportunity to be reutilized. Optimization process has been simulated by previous studies related to type and dosage of solvents, variances of temperature, additional of surfactants, and other related parameters to increase oil removal from oily contaminated soil. This study seeks an approach of optimization for solvent extraction process to oily contaminated solid waste by conducting statistical analysis into laboratory experimentation from perspective of Total Petroleum Hydrocarbon (TPH) removal.Method : Biosurfactant became single extractors for multistage extraction process and also combined with other solvents which are acetone and toluene. Mixing method that utilized during the study was combination between horizontal shaking at 150 rpm in 15 min duration and centrifugation force at 1,570 g in 10 min duration. Statistical analysis were conducted to seek its multiple regression.Result : Study describing biosurfactant performance single extractor by using multistage extraction process achieve 77% TPH removal, while combination of biosurfactant and solvent extraction by using toluene and acetone also capable to increase TPH removal 7% higher from original performance of both toluene and acetone at solvent extraction.Conclusion : Surfactant and solvents combination is promising to improve TPH removal, while statistics analysis that implemented to observed extraction process has possibility to be used for engineering higher efficiency of extraction process.

Removal of PCBs from a Contaminated Soil Using CF-Systems® Solvent Extraction Process

1997 ◽  
Vol 47 (10) ◽  
pp. 1119-1124 ◽  
Author(s):  
Mark C. Meckes ◽  
Joseph Tillman ◽  
Lauren Drees ◽  
Eric Saylor
Keyword(s):  
Solvent Extraction ◽  
Contaminated Soil ◽  
Extraction Process

Biosurfactant Addition into Solvent Extraction Process of Oily Contaminated Solid Waste

2020 ◽  
Author(s):  
L. Fitriyani
Keyword(s):  
Solvent Extraction ◽  
Solid Waste ◽  
Oil Recovery ◽  
Contaminated Soil ◽  
Large Scale ◽  
Treatment Process ◽  
Extraction Process ◽  
Contaminated Site ◽  
Solvent Ratio ◽  
Duration Of Treatment

Solvent extraction has been used in industry or many purposes for years, including to recover oil at contaminated soil. Certain solvents and temperature ranges have been chosen to increase the oil recovery rate of extraction process. The Study observed the implementation of biosurfactant at the extraction process to perform reduction of total petroleum hydrocarbon (TPH) concentration of oily contaminated soil. In order to optimize TPH removal, extraction were conducted for multiple stages. Biosurfactant extraction result were also compared to solvent extraction process which acetone and toluene have been selected to extract oil content from contaminated soil by using solvent extraction process. The combination treatments with biosurfactant were also involving variety of centrifugation process with 1000 rpm (1570 g) operational speed. Duration of treatment process was 10 minutes with some variations of solid to solvent ratio. During the experiments comparison result between varies treatment process provides alternatives to treat oily contaminated soil by using extraction process. Compatibility among solvents, biosurfactants, types of oily contaminated solid waste were also observed to seek possibility on large scale of treatment process implementation both insitu at the contaminated site and exsitu at integrated waste treatment facility.

Decontamination of Soil Contaminated with Aroclor 1260 Using a Solvent Extraction Process and γ-Ray Radiolysis

1998 ◽  
Vol 3 (1) ◽  
Author(s):  
Randy D. Curry ◽  
Thomas Clevenger ◽  
Oana Stancu-Ciolac ◽  
John Farmer ◽  
B. J. Mincher ◽  
...  
Keyword(s):  
Solvent Extraction ◽  
Soil Surface ◽  
Extraction Process ◽  
Soil Matrix ◽  
University Of Missouri ◽  
New Approach ◽  
Gamma Radiolysis ◽  
Γ Ray ◽  
The University ◽  
Floatation Process

AbstractRadiolytic dechlorination of halogenated organic compounds in soil has proved to require large γ-ray doses. In collaboration with INEEL, the University of Missouri investigated a new approach for the dechlorination of polychlorinated biphenyls in soil. The chemistry of an existing solvent extraction-floatation process was modified and then used to desorb Aroclor 1260 from a soil matrix. The chemistry of the floatation process was tailored to allow radiolytic dechlorination of the Aroclor 1260 once it was desorbed into the floatant. For the process, Soltrol 130 and an alcohol solution were used as the solvent-extractant. The efficiency of using gamma radiolysis to dechlorinate the Aroclor 1260-floatant solution was investigated using a Co-60 source located at the University's Research Reactor. When Aroclor 1260 was desorbed from the soil surface with the floatation process and irradiated, the dose constant (efficiency) was 40 times greater than when soil was irradiated alone.

scholarly journals Solid Concentration Effect for Solvent Extraction Process of Oily Contaminated Soil

REAKTOR ◽  
2019 ◽  
Vol 19 (2) ◽  
pp. 84-88
Author(s):  
Lely Fitriyani ◽  
Edwan Karadena ◽  
Sukandar Sukandar
Keyword(s):  
Solvent Extraction ◽  
Contaminated Soil ◽  
Petroleum Hydrocarbon ◽  
Oil Content ◽  
Soil Washing ◽  
Extraction Process ◽  
Total Petroleum Hydrocarbon ◽  
The Other ◽  
Solvent Ratio ◽  
Solid Concentration

Solvent extraction has been used as a method to wash oil content of oily contaminated soil in industry for years. Some solvents and temperature ranges has been chosen to increase the oil recovery rate of extraction process, however only few studies reported that it has been able to reach remaining Total Petroleum Hydrocarbon (TPH) less than 0.5% in less than 30 minutes. During the experiments, acetone and toluene chosen to extract oil content from contaminated soil by using solvent extraction process. Temperature selected were between 24°C up to 70°C. Mixing apparatus which has been utilized was centrifugation machine with 1000 rpm (1570 g) operational speed. Duration of treatment process was 10 minutes with some variations of solid to solvent ratio. During the experiments, it was observed that by using toluene and acetone as solvents, the optimum Total Petroleum Hydrocarbon (TPH) removal obtained at temperature 50°C. In the other hand, optimum solid to solvent ratio toluene ratio was 1:6. As a solvent acetone observed capable to reduce TPH content until below 0.5% as threshold limit for TPH of contaminated soil regulated by environmental regulation in Indonesia. During the experiments it was also observed the dependency of solid concentration (Cs) with dissociation coefficient (KD). In the other hand, heavy metal at the remaining extracted soil after soil washing was observed available in safe concentration to be discharged to the environment base on regulation in Indonesia. Keywords: solvent extraction, soil washing, contaminated soil, TPH, centrifugation, oil sludge, acetone, toluene, solid treatment.

scholarly journals Study on the Effect and Mechanism of Impurity Aluminum on the Solvent Extraction of Rare Earth Elements (Nd, Pr, La) by P204-P350 in Chloride Solution

Minerals ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 61
Author(s):  
Wenjie Zhang ◽  
Xian Xie ◽  
Xiong Tong ◽  
Yunpeng Du ◽  
Qiang Song ◽  
...  
Keyword(s):  
Rare Earth ◽  
Solvent Extraction ◽  
Rare Earth Elements ◽  
Organic Phase ◽  
Extraction Process ◽  
Industrial Applications ◽  
Separation And Purification ◽  
Aluminum Ion ◽  
Hydrochloric Acid Medium ◽  
Impurity Ion

Solvent extraction is the most widely used method for separation and purification of rare earth elements, and organic extractants such as di(2-ethylhexyl) phosphoric acid (P204) and di(1-methyl-heptyl) methyl phosphonate (P350) are most commonly used for industrial applications. However, the presence of impurity ions in the feed liquid during extraction can easily emulsify the extractant and affect the quality of rare earth products. Aluminum ion is the most common impurity ion in the feed liquid, and it is an important cause of emulsification of the extractant. In this study, the influence of aluminum ion was investigated on the extraction of light rare earth elements by the P204-P350 system in hydrochloric acid medium. The results show that Al3+ competes with light rare earths in the extraction process, reducing the overall extraction rate. In addition, the Al3+ stripping rate is low and there is continuous accumulation of Al3+ in the organic phase during the stripping process, affecting the extraction efficiency and even causing emulsification. The slope method and infrared detection were utilized to explore the formation of an extraction compound of Al3+ and the extractant P204-P350 that entered the organic phase as AlCl[(HA)2]2P350(o).

scholarly journals Separation of Sn, Sb, Bi, and Cu from Tin Anode Slime by Solvent Extraction and Chemical Precipitation

Metals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 515
Author(s):  
Wei-Sheng Chen ◽  
Shota Mesaki ◽  
Cheng-Han Lee
Keyword(s):  
Solvent Extraction ◽  
Liquid Phase ◽  
Ph Value ◽  
Chemical Precipitation ◽  
Extraction Process ◽  
Refining Process ◽  
Anode Slime ◽  
Electrolytic Refining ◽  
Precipitation Procedure ◽  
Tin Anode

Tin anode slime is a by-product of the tin electrolytic refining process. This study investigated a route to separate Sn, Sb, Bi, and Cu from tin anode slime after leaching with hydrochloric acid. In the solvent extraction process with tributyl phosphate, Sb and Sn were extracted into the organic phase. Bi and Cu were unextracted and remained in the liquid phase. In the stripping experiment, Sb and Sn were stripped and separated with HCl and HNO3. Bi and Cu in the aqueous phase were also separated with chemical precipitation procedure by controlling pH value. The purities of Sn, Sb, Cu solution and the Bi-containing solid were 96.25%, 83.65%, 97.51%, and 92.1%. The recovery rates of Sn, Sb, Cu, and Bi were 76.2%, 67.1%, and 96.2% and 92.4%.

Facile fractionation of bamboo hydrolysate and characterization of isolated lignin and lignin-carbohydrate complexes

Holzforschung ◽  
2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Xiaodi Wang ◽  
Yongchao Zhang ◽  
Luyao Wang ◽  
Xiaoju Wang ◽  
Qingxi Hou ◽  
...  
Keyword(s):  
Solvent Extraction ◽  
Organic Solvent ◽  
Extraction Process ◽  
Water Soluble ◽  
Organic Solvent Extraction ◽  
Glycoside Linkage ◽  
Potential Applications ◽  
Tremendous Amount ◽  
Main Components ◽  
Hemicellulosic Sugars

AbstractAn efficient separation technology for hydrolysates towards a full valorization of bamboo is still a tough challenge, especially regarding the lignin and lignin-carbohydrate complexes (LCCs). The present study aimed to develop a facile approach using organic solvent extraction for efficiently fractionating the main components of bamboo hydrolysates. The high-purity lignin with only a trace of carbohydrates was first obtained by precipitation of the bamboo hydrolysate. The water-soluble lignin (WSL) fraction was extracted in organic solvent through a three-stage organic solvent extraction process, and the hemicellulosic sugars with increased purity were also collected. Furthermore, a thorough characterization including various NMR techniques (31P, 13C, and 2D-HSQC), GPC, and GC-MS was conducted to the obtained lignin-rich-fractions. It was found that the WSL fraction contained abundant functional groups and tremendous amount of LCC structures. As compared to native LCC of bamboo, the WSL fraction exhibited more typical LCC linkages, i.e. phenyl glycoside linkage, which is the main type of chemical linkage between lignin and carbohydrate in both LCC samples. The results demonstrate that organic phase extraction is a highly efficient protocol for the fractionation of hydrolysate and the isolation of LCC-rich streams possessing great potential applications.

Modelling tyramine extraction from wastewater using a non-dispersive solvent extraction process

2020 ◽  
Vol 27 (31) ◽  
pp. 39068-39076 ◽  
Author(s):  
Mahdi Ghadiri ◽  
Alireza Hemmati ◽  
Ali Taghvaie Nakhjiri ◽  
Saeed Shirazian
Keyword(s):  
Solvent Extraction ◽  
Extraction Process
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