Chemical recycling offers the opportunity to foster transition towards a circular economy for plastics as complementary strategy mechanical recycling. For implementation of chemical technologies, there are still significant challenges ahead that – besides definition binding legal frameworks need intensified research: knowledge-based methods both identification suitable process technologies cons...

this paper investigates householders’ attitudes to the recycling of solid wastes in one part of northern malaysia, namely alor setar town, kedah state. a postal questionnaire survey was administered to households in alor setar town in selected areas of high, middle and low incomes. 389 responses were obtained, a response rate of 86.4%. a personal interview with an official of the municipal co...

recycling process is one of the most important processes in the trend of sustainable development,a logical reaction against the problems that results from industrial age. building materials can play an important rolein the process of a building formation or destruction, in fact, materials forms the building nature. thus, the role ofmaterial and the impact of its recycling in sustainable develop...

Novel poly(ester-urethane)s were prepared by a synthetic route using a lipase that avoids the use of hazardous diisocyanate. The urethane linkage was formed by the reaction of phenyl carbonate with amino acids and amino alcohols that produced urethane-containing diacids and hydroxy acids, respectively. The urethane diacid underwent polymerization with polyethylene glycol and α,ω-alkanediols and...

Pathology, microbiology, blood bank and other diagnostic laboratories generate sizable amount of biomedical waste (BMW). The audit of the BMW is required for planning proper strategies. The audit in our laboratory revealed 8 kgs anatomical waste, 600 kgs microbiology waste, 220 kgs waste sharps, 15 kgs soiled waste, 111 kgs solid waste, 480 litres liquid waste along with 33,000 litres per month...

Synthetic dyes are extensively used and rarely degraded. Microbial decomposition is a cost-effective alternative to chemical and physical degradation processes. In this study, the decomposition of simulated anthraquinone reactive dye (Reactive Blue 19; RB19) at a concentration of 400-mg/L in wastewater by a biofilm hydrolytic-aerobic recycling system was investigated over a range of recycling f...

We study the potential for molecule recycling in chemical reaction systems and their DNA strand displacement realizations. Recycling happens when a product of one reaction is a reactant in a later reaction. Recycling has the benefits of reducing consumption, or waste, of molecules and of avoiding fuel depletion. We present a binary counter that recycles molecules efficiently while incurring jus...

Waste plastics contain a substantial number of valuable chemicals. The wastes from post-consumer as well as from industrial production can be recycled to valuable chemical feedstock, which can be used in refineries and/or petrochemical industries. This chemical recycling process is an ideal approach in recycling the waste for a better environment. Polymer cracking using a laboratory fluidized b...