ON DIFFICULTIES RELATED TO USE OF FOSSIL FUELS, USE OF CLEAN AND RENEWABLE SOURCES AND TECHNOLOGIES IS PRESENTED. GASES FUELS SUCH AS SYNGAS ARE SUITABLE AS AN EFFICIENT AND CLEAN OPERATION. SYNGAS APPLICATIONS INCLUDE HEAT PRODUCTION AND GENERATION OF MECHANICAL AND ELECTRICAL POWER. AS FOR FLEXIBILITY OF GASIFIER TECHNOLOGY AND WITH APPROPRIATE DESIGN, THERE IS POTENTIAL TO USE OF FEEDSTOCKS SUCH AS BIOMASS WHICH IS A RENEWABLE ENERGY RESOURCE AND IN SPECIAL CASES WOULD HELP IN WASTE DISPOSAL PROBLEMS. KNOWLEDGE OF CHARACTERISTIC DATA OF DIFFERENT KIND OF GASIFIERS AND PROPER OPERATING CONDITIONS IS ESSENTIAL FOR GASIFIER SELECTION. THIS STUDY INVESTIGATES DIFFERENT KIND OF CONVENTIONAL GASIFIERS FOR BIOMASS GASIFICATION. WITH REGARD TO ADVANTAGES AND DEFICIENCIES OF EACH ONE BASED ON FEED PROPERTIES AND ITS EFFECT ON AMOUNT AND COMPOSITION OF SYNGAS, FLUIDIZED BED AND TWO STAGES GASIFIERS ARE BETTER CHOICES.

CONVERTING BIOMASS TO VALUE ADDED PRODUCTS HAVE BEEN ATTRACTED A LOT OF FOCUSED IN RECENT YEARS. IN THIS PAPER A FACILE APPROACH FOR USING DATE SEED POWDER WITHOUT DE LIGINIFICATION WAS INTRODUCED TO CONVERT DATE SEED BIOMASS TO ABSORBING POLYMER. THE BIOMASS OF DATE SEED AS A SOURCE OF POLYSACCHARIDES IS IMMERSED IN EMULSIONS OF ACRYLIC MICROGELS WITH DIFFERENT CHEMICAL STRUCTURE. DIFFERENT POLYMER LATEX BASED ON ACRYLIC ACID (AA), SODIUM ACRYLATE (SA) ACRYLAMIDE (AM) AND 2-ACRYLAMIDE -2-METHYL PROPANE SULFONIC ACID (AMPS) WAS PREPARED THROUGH INVERSE EMULSION POLYMERIZATION. THE EFFECT OF LATEX TYPE ON MODIFICATION OF DATE SEED TO ABSORBING POLYMER WAS INVESTIGATED. THE BEST MODIFICATION OF DATE SEED TO ABSORBING HYDROGEL WAS OBTAINED WITH POLY (AA-SA-AM-AMPS). THE MODIFIED DATE SEED WITH THIS LATEX HAVE WATER ABSORBENCY UP TO 48.83G/G WHILE WATER ABSORBENCY OF UNMODIFIED DATE SEED IS ONLY 0.2 G/G.

HYBRID HYDROGELS BASED ON NATURAL POLYMERS, ESPECIALLY POLYSACCHARIDES, HAS RECEIVED SPECIAL ATTENTION OF MANY SCIENTISTS AND RESEARCHERS IN RECENT YEARS. IN THE PRESENT STUDY, THE BIOMASS OF CANE BAGASSE AS A SOURCE OF POLYSACCHARIDES IS IMMERSED BY POLYMER LATEX BASED ON ACRYLIC ACID (AA), SODIUM ACRYLATE (SA) AND ACRYLAMIDE (AM) MONOMERS (PRODUCED BY INVERSE EMULSION POLYMERIZATION). THEN, BY USING HEAT BETWEEN SYNTHETIC AND NATURAL PARTS, A CHEMICAL REACTION TOOK PLACE AND BAGASSE CONVERTED INTO A HYDROGEL. THE EFFECT OF LATEX TYPE ON MODIFICATION OF CANE BAGASSE TO ABSORBING POLYMER WAS INVESTIGATED. THE BEST MODIFICATION OF CANE BAGASSE TO ABSORBING HYDROGEL WAS OBTAINED WITH POLY (AA-SA-AM) (MOL RATIO 54:6:40). THE MODIFIED CANE BAGASSE WITH THIS LATEX HAVE WATER ABSORBENCY UP TO 81.7 G/G WHILE WATER ABSORBENCY OF UNMODIFIED CANE BAGASSE IS ONLY 0.27 G/G. CANE BAGASSE HYDROGELS WERE CHARACTERIZED THROUGH SWELLING MEASUREMENT. THE PRODUCTION OF THESE HYDROGELS IS CONSIDERED TO BE AS AN INTRODUCTORY STEP IN THE EASIER AND MORE COST EFFECTIVE PRODUCTION OF HYBRID ABSORBING HYDROGELS BASED ON DIRECT USE OF BIOMASS ESPECIALLY FOR USE IN AGRICULTURAL APPLICATIONS.