PAPERmaking! FROM THE PUBLISHERS OF PAPER TECHNOLOGY Volume 4, Number 1, 2018
BIOMASS Unravelling the effect of pretreatment severity on the balance of cellulose accessibility and substrate composition on enzymatic digestibility of steam- pretreated softwood, J.J. MacAskill et al , Biomass and Bioenergy , Vol.109. Pretreatment is essential for effective enzymatic digestion of lignocellulosic biomass. Steam pretreatments increase the digestibility by increasing the accessibility of the carbohydrates to the enzymes. However, they can also cause yield loss and lowered digestibility via increased non-productive binding of enzymes to lignin. The relative importance of these effects is not well defined, especially for softwoods which require more severe pretreatments than other types of biomass. This work shows that while increasing pretreatment severity does lead to greater enzyme inhibition, this was being overridden by increases in the accessibility. Steam gasification of wood pellets, sewage sludge and manure: Gasification performance and concentration of impurities, Daniel Schweitzer et al , Biomass and Bioenergy , Vol.111. In the dual fluidised bed steam gasification process a product gas with a relatively high calorific value is produced. For clean biomass such as wood pellets or wood chips this process has been previously demonstrated in pilot-scale. Within this work, the applicability of waste biomass such as sewage sludge or manure as a fuel for this gasification process was investigated experimentally. The gasification experiments have shown, that the steam gasification of both biogenic waste materials is possible. DEINKING Biodeinking of mixed ONP and OMG waste papers with cellulase, Iman Akbarpour et al , Cellulose , Vol.25 (2). Development of qualitative properties and surface modification of mixed recycled 70% old newspaper and 30% old magazine pulp after enzymatic treatment with commercial cellulase was evaluated. The results of the present research demonstrated that the quality of the pulp and paper obtained from cellulase deinking process was comparable or even better than that from the chemical deinking. Biodeinking of mixed ONP and OMG waste papers with cellulase, Iman Akbarpour et al , Cellulose , Vol.25 (2). Development of qualitative properties and surface modification of mixed recycled 70% old newspaper and 30% old magazine pulp after enzymatic treatment with commercial cellulase was evaluated. The results of the present research demonstrated that the quality of the pulp and paper obtained from cellulase deinking process was comparable or even better than that from the chemical deinking. Studies on the environmentally friendly deinking process employing biological enzymes and composite surfactant, Feng Wang et al , Cellulose , online. In this study, biodegradable cardanol polyoxyethylene ether (CPE) was applied to the field of flotation deinking of mixed office waste paper (MOW), and its combination with fatty alcohol polyoxyethylene ether (AEO-9), fatty alcohol polyoxyethylene ether sulfate (AES) as a composite surfactant was also investigated for a green deinking process. According to this study, cutinase and amylase combined with cardanol polyoxyethylene ether and other surfactants provide an environmentally friendly and effective deinking strategy. ENVIRONMENT A systems approach to risk and resilience analysis in the woody-biomass sector: A case study of the failure of the South African wood pellet industry, Rebecca Bowd et al , Biomass and Bioenergy , Vol.108. Currently more than 600 million of the 800 million people in SSA are without electricity, and it is estimated that an additional 2500 GW of
Technical Abstracts
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