Open AccessUtilizing Lignosulfonate from Coconut Husk as Sacrificial Agent to Reduce Surfactant Adsorption
Author(s) -
Nurhidayati Mat Daud,
Wan Mohammad Kamal Wan Jaafar,
Nurul Izzatty Ismail,
Radzuan Junin,
Muhammad A. Manan,
Ahmad Kamal Idris
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/765/1/012021
Subject(s) - adsorption , pulmonary surfactant , chemistry , husk , aqueous solution , chemical engineering , fourier transform infrared spectroscopy , sodium dodecyl sulfate , lignin , enhanced oil recovery , critical micelle concentration , micelle , nuclear chemistry , chromatography , organic chemistry , biochemistry , botany , engineering , biology
The adsorption of surfactants from aqueous solutions in porous media is essential in enhanced oil recovery (EOR) from oil reservoirs. Surfactant loss that is due to adsorption by the reservoir rocks weakens the efficiency of the chemical slurry that is injected and decreases the oil-water interfacial tension (IFT). One of the ways to reduce the reduction is by using a sacrificial agent. This project will focus on utilizing the lignosulfonate (LS) from coconut husk as a sacrificial agent to reduce the surfactant adsorption. Lignin was extracted from coconut husk before sulfonated using sodium sulphite, Na 2 SO 3 to form lignosulfonate. Fourier transform infrared (FTIR) spectroscopy was used to characterize the lignin and lignosulfonate and compare them with the commercial product. The batch experiment then conducted using a clay mineral of illite as the adsorbent. Two types of surfactants were studied; anionic (Sodium Dodecyl Sulfate-SDS) and non-ionic (4-octylphenol polyethoxylate-TX100). The amount of adsorbed surfactant was determined by measuring the surfactant critical micelle concentration (CMC) before and after the adsorption tests. The result in the batch experiment shows that LS reduced the surfactant adsorption on illite by about 54.2% for SDS and 42.6% for TX100. This showed that lignosulfonate has the potential as a sacrificial agent to minimize the surfactant adsorption, and agriculture waste like coconut husk can be utilized for this purpose.