Current Issue

Advanced Materials and Technologies Environmental Sciences – AdvMatTechEnv 2019; Vol 3; Issue 2 is now being populated with papers. Thank you for all the contributors and reviewers.

Polymer flooding is an excellent candidate for enhancing recovery factor through increasing volumetric sweep efficiency. Polymers are generally used to increase the viscosity of the displacing fluid. These chemicals significantly reduce the mobility ratio between the displacing and displaced fluid. This paper aims to provide a comprehensive review about enhanced oil recovery (EOR) methods, pros and cons of polymer flooding, modified conventional polymers, and novel smart polymer. The properties of conventional and novel water-soluble polymers applied in EOR are discussed along with their limitations. In addition, this review covers current research studies about new smart polymers and properties which suitable for high temperature and high salinity reservoirs, overcoming limitations due to harsh reservoir conditions.

The process of obtaining microcrystalline cellulose from flax fibers, which involves obtaining organosolv pulp in an environmentally safer method, followed by its treatment with a mixture of acids and hydrolysis, is explored. The proposed technology allows reducing the number of stages of processing plant materials, eliminating the use of more expensive chemicals and reducing the consumption of traditional reagents. SEM, XRD, sieve analysis and conductometric analysis were used to study organosolv pulp and microcrystalline cellulose parameters. The obtained microcrystalline cellulose has a sulfate ash content of 0.082%, a conductivity of 54 μSm/cm, a degree of polymerization of 186, which meet the requirements of the European Pharmacopoeia and can be used as a filler and binder in the chemical, pharmaceutical, food industries, and medicine.