Biochar properties vary, and characterization of biochars is necessary for assessing their potential to sequester carbon and improve soil functions. This study aimed at assessing key surface properties of agronomic relevance for products from slow pyrolysis at 250-800 °C, hydrothermal carbonization (HTC), and flash carbonization. The study further aimed at relating surface properties to current...

A detailed biomass pyrolysis kinetic scheme was assessed in the multiscale simulations of a single-particle pyrolyzer with slow and pilot-scale entrained flow fast pyrolysis. The developed by CRECK group consists 32 reactions 58 species. simulation model developed, where kinetics employed to simulate reactions, one-dimensional particle utilized intraparticle transport phenomena, particle-in-cel...

Bagas adalah ampas tebu dari proses penggilingan atau pengepresan tebu, terdiri serpihan lunak dalam jumlah besar dengan kadar air 46-52%, serat 43-52%, dan padatan terlarut sekitar 2-6%. Sejauh ini baru 30-50% yang telah digunakan di Indonesia. Kandungan lignoselulosa tinggi pada memungkinkan untuk sebagai bio-oil. Produksi bio-oil dapat diperoleh cara pirolisis, diklasifikasikan menjadi 3 jen...

A biochar supported calcined-Mg/Al layered double hydroxides composite (CLDHs/BC) was synthesized by a one-pot slow pyrolysis of LDHs preloaded bagasse biomass. Multiple characterizations of the product illustrated that the calcined-Mg/Al layered double hydroxides (CLDHs) were successfully coated onto the biochar in slow pyrolysis of pre-treated biomass. The as-synthesized CLDHs/BC could effici...

Biomass was subjected to conventional and microwave pyrolysis, to determine the influence of each process on the yield and composition of the derived gas, oil and char products. The influence of pyrolysis temperature and heating rate for the conventional pyrolysis and the microwave power was investigated. Two major stages of gas release were observed during biomass pyrolysis, the first being CO...

Data are presented on the acute toxicity (mortality only) of the thermal degradation products of polymers obtained by two methods of degradation. One system utilized a slowly increasing temperature (5 degrees C/min) and gradual degradation of the polymer with the rats being exposed to degradation products as they were evolved. In this system the more toxic polymers included wool, polypropylene,...

A set of four soils was extensively studied for composition, sorption/desorption, and biodegradation to investigate linkages among these three inter-related factors. Composition of soil organic matter (SOM) was quantitatively characterized using pyrolysis GC-MS; although CO2 dominated the total ion chromatogram for all soils, each soil produced a distinctively different pyrogram and 1.4-4.8% of...