THE PRESENCE OF ANTIBIOTICS IN WATER DISCHARGES REPRESENTS A HAZARD FOR THE ECOSYSTEMS, AS IT COULD AFFECT THE BIOTA EQUILIBRIUM AT THE MICRO AND MACROSCALES. CONSEQUENTLY, IT IS CRUCIAL TO DEVELOP EFFECTIVE ADSORPTION AND OXIDATION TECHNOLOGIES TO REMOVE ANTIBIOTICS FROM WATER. HEREIN, WE ASSESSED THE EFFECTIVITY AND STABILITY OF A METAL ORGANIC FRAMEWORK-BIOMASS HYBRID (MIL-53(AL)@RH) FOR THE REMOVAL OF OXYTETRACYCLINE (OTC) VIA ADSORPTION AND PHOTOCATALYTIC DEGRADATION. UNDER EQUILIBRATED CONDITIONS, THE HYBRID RETAINED 165 MG 1 OTC. WHEN ADSORPTION AND PHOTOCATALYTIC DEGRADATION WERE ARRANGED IN TANDEM, THE SYSTEM REMOVED 99 % OF OTC WITH A DOSE OF 2.83 MG H2O2/MG OTC. THE THERMO-KINETIC INTERPRETATION OF THE ADSORPTION MEASUREMENTS WAS WELL DESCRIBED BY SIP´S ISOTHERM AND PSEUDO-SECOND KINETIC MODELS, WHICH ALONG WITH THE HEAT OF ADSORPTION (? 104.8 KJ MOL? 1) SUGGEST A CHEMICAL INTERACTION BETWEEN THE OTC AND MIL-53(AL)@RICE HUSK HYBRID ACTIVE CENTRES. THE MIL-53(AL)@RH HYBRID DEMONSTRATED A REMARKABLE STABILITY WITH AN OTC REMOVAL ABOVE 90 % AFTER 10 OPERATIONAL CYCLES. MOREOVER, PYROLYSIS OF OTC-SATURATED HYBRID LED TO A CARBONACEOUS STRUCTURE WHICH DEMONSTRATED AN OUTSTANDING OTC ADSORPTION CAPACITY (221 MG G? 1 OTC). THE RESULTS DEMONSTRATE THAT THE MIL-53(AL)@RH HYBRID PRESENTS A SIGNIFICANT PROSPECT FOR COMBINED ADSORPTION-PHOTOCATALYTIC TREATMENT OF WATER BODIES CONTAMINATED WITH ANTIBIOTICS.

MOF@BIOMASS LAYERED HYBRIDS WERE DESIGNED THROUGH IN SITU GROWTH FROM RICE HUSK (RH) AND MICROWAVE-ASSISTED SYNTHESIZED MIL-53(AL) PARTICLES THAT ENABLE THE REDUCTION OF REACTION TIMES. THE SYNTHESIS PROCESS INCLUDED STEPS TO PRETREAT RH, AL ADSORPTION ON RH, AND THEN MIL-53(AL) IN-SITU GROWTH REACTION AT 125 ?C FOR 60 MIN AND 200 W IRRADIATION POWER. THE RESULTING HYBRID (MIL-53(AL)@RH) AND ITS PARENT SEPARATE MATERIALS WERE CHARACTERIZED USING TGA, SEM, FTIR, XRD, AMONG OTHERS. MIL-53(AL)@RH SHOWED HIGH CRYSTALLINITY IN THE HYBRIDIZED MOF PARTICLES, THERMAL DECOMPOSITION PHASES, AND FUNCTIONAL GROUPS (AL?O, O?H, C??O, AND C??C). THE HYBRID PARTICLES ALLOW AN EASY SEPARATION DURING HETEROGENEOUS PROCESSING DUE TO THEIR 400 TIMES LARGER SIZE COMPARED TO MIL-53(AL) CRYSTALS. THE PROPERTIES OF THE LAYERED HYBRIDS FOR REMOVAL OF OXYTETRACYCLINE (OTC),

BIOMASS PROVIDES POTENTIAL BENEFITS FOR OBTAINING VALUE-ADDED COMPOUNDS INSTEAD OF STRAIGHT BURNING; AS CHILE HAS FORESTRY POTENTIAL THAT SUPPORTS SUCH BENEFITS, IT IS CRUCIAL TO UNDERSTAND THE BIOMASSES? PROPERTIES AND THEIR THERMOCHEMICAL BEHAVIOUR. THIS RESEARCH PRESENTS A KINETIC ANALYSIS OF THERMOGRAVIMETRY, AND PYROLYSIS OF REPRESENTATIVE SPECIES IN THE BIOMASS OF SOUTHERN CHILE, HEATING BIOMASSES AT 5 TO 40 °C·MIN?1 RATES BEFORE BEING SUBJECTED TO THERMAL VOLATILISATION. THE ACTIVATION ENERGY (EA) WAS CALCULATED FROM CONVERSION USING MODEL-FREE METHODS (FLYNN?WALL?OZAWA (FWO), KISSINGER?AKAHIRA?SUNOSE (KAS), AND FRIEDMAN (FR)), AS WELL AS THE KISSINGER METHOD BASED ON THE MAXIMUM REACTION RATE. THE AVERAGE EA VARIED BETWEEN KAS 117 AND 171 KJ·MOL?1, FWO 120?170 KJ·MOL?1, AND FR 115?194 KJ·MOL?1 FOR THE FIVE BIOMASSES USED. PINUS RADIATA (PR) WAS IDENTIFIED AS THE MOST SUITED WOOD FOR PRODUCING VALUE-ADDED GOODS BASED ON THE EA PROFILE FOR THE CONVERSION (?), ALONG WITH EUCALYPTUS NITENS (EN) FOR ITS HIGH VALUE OF REACTION CONSTANT (K). EACH BIOMASS DEMONSTRATED ACCELERATED DECOMPOSITION (AN INCREASE IN K RELATIVE TO ?). THE HIGHEST CONCENTRATION OF BIO-OIL CONTAINING PHENOLIC, KETONIC, AND FURANIC COMPOUNDS WAS PRODUCED BY THE FORESTRY EXPLOITATION BIOMASSES PR AND EN, DEMONSTRATING THE VIABILITY OF THESE MATERIALS FOR THERMOCONVERSION PROCESSES.