This paper contains the description of pyrolysis and flow process through porous media taking into account kinetic rate coefficient and equilibrium state of pyrolysis. Mathematical equation of pyrolysis mechanism including kinetic rate coefficient and equilibrium rate of pyrolysis, and equations like mass, momentum and energy and flow through porous zone are presented. Considered model is based...

In this work, biochar produced from Indonesian rice husks. Then used as adsorbent of Cr(VI) in aqueous solution. The XRD pattern showed the characterization at 23º (002) reflection, appearance silicate oxide, and carbon vibrations. surface area SEM morphologies confirmed that after pyrolysis treatment husk has changed. increased thermal treatment. adsorption study by demonstrate 2nd-order react...

Environmental pollution by arsenic (As) and hexavalent chromium (Cr(VI)) has been one of the most serious environmental problems in recent years around world. Their presence water is a result both natural anthropogenic activities, poses risks to human health due their high toxicity. Adsorption leading method used remove chromium, with biochar, carbonaceous pyrolytic product made from various ty...

The presented study aims to improve the quality of bio-oils by catalytic upgrading of pyrolysis bio-oil from microwave pyrolysis of biomass using transition metal modified activated carbon (AC) catalyst. A central composite experimental design (CCD) was used to optimize the reaction conditions for high quality bio-oil production. The effects of reaction temperature and reaction time on product ...

This review presents the summary of new studies on pyrolysis of biomass to produce fuels and chemical feedstocks. A number of biomass species, varying from woody and herbaceous biomass to municipal solid waste, food processing residues and industrial wastes, were subjected to different pyrolysis conditions to obtain liquid, gas and solid products. The results of various biomass pyrolysis invest...

Commands introduced in this tutorial: :scm-echo-result, :eval, lots of scheme functions Macros introduced in this tutorial: (None)

The LCF tradition of interactive theorem proving, which was started by Milner in the 1970-ies, appears to be tied to the classic READ-EVAL-PRINT-LOOP of sequential and synchronous evaluation of prover commands. We break up this loop and retrofit the read-eval-print phases into a model of parallel and asynchronous proof processing. Thus we explain some key concepts of the Isabelle/Scala approach...

Fast pyrolysis is an efficient technique for thermal degradation of lignin to bio-oils containing bio-phenols for the synthesis of adhesives, resins, and polymers. Lignin has a complex structure, and hence a large number of pyrolytic components are generated during the pyrolysis process. The composition of the pyrolytic products depends on the type of lignin, temperature, types of catalyst, and...

In this squib, I present an alternative view of the Gen and Eval mechanisms that lie at the heart of Optimality Theory (“OT”) (see Prince and Smolensky 1993, McCarthy and Prince 1993). As originally conceived, Gen is a pattern generator which creates an infinite set of possible phonological realizations of a lexical input string (“candidates”). Eval then evaluates the entire (infinite) set to d...