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The present investigation highlights methane adsorption on synthesized Activated Carbons (ACs) based upon hydrothermally treated cellulose and lignin followed by chemical activation utilizing ZnCl2 as the activating agent. The in uence of e ective parameters such as hydrothermal pretreatment, precursor type, carbonization temperature, and impregnation ratio on the textural properties of synthesized materials as well as adsorption capacities of methane was examined. Thermal stability and decomposition procedures of cellulose and lignin were determined through the TGA technique while all prepared ACs were characterized via N2 adsorption-desorption analysis utilizing BET-BJH surface area measurement and Field Emission Scanning Electron Microscopy (FESEM). Amongst all prepared materials, the AC that was produced through impregnating hydrothermally treated cellulose with ZnCl 2 with the ratio of 1 and carbonized at 600 C revealed improved surface and textural properties and enhanced methane storage. Furthermore, hydrothermal pretreatment provided micro-pore diameters ranging from 1.8 to 2.2 nm. This resulted in 6.42 mmol.g 1 of methane adsorbed at 298 K and 3.65 MPa. In order to systematically understand behaviors of adsorbents in the process at hand, several kinetic and isotherm models were investigated.

We report a particulate cell delivery platform, toroidal spiral particles (TSPs), for continuous cell activation, expansion, and local sustained release. Biocompatible TSPs, generated by a self-assembly process of polymeric droplet sedimentation in an aqueous solution and subsequent polymer solidification, possess many engineering design flexibilities to manipulate the microenvironment of the cells to control cell proliferation, migration, and release kinetics. These millimeter-size particles with desired mechanical and physicochemical properties may be potentially used for adoptive cellular therapy (ACT) delivery by a minimally invasive procedure to the tumor mass.

Transplantable cell encapsulation systems present a promising approach to deliver a therapeutic solution from hormone-producing cells for the treatment of endocrine diseases like type 1 diabetes. However, the development of...