| ophiostoma gemellus and sporothrix variecibatus from mites infesting protea infructescences in south africa. | ophiostoma (ophiostomatales) represents a large genus of fungi mainly known from associations with bark beetles (curculionidae: scolytinae) infesting conifers in the northern hemisphere. few southern hemisphere native species are known, and the five species that consistently occur in the infructescences of protea spp. in south africa are ecologically unusual. little is known about the vectors of ophiostoma spp. from protea infructescences, however recent studies have considered the possible role ... | 2008 | 18751556 |
| biofiltration of mixtures of gas-phase styrene and acetone with the fungus sporothrix variecibatus. | the biodegradation performance of a biofilter, inoculated with the fungus sporothrix variecibatus, to treat gas-phase styrene and acetone mixtures under steady-state and transient conditions was evaluated. experiments were carried out by varying the gas-flow rates (0.05-0.4m(3)h(-1)), leading to empty bed residence times as low as 17.1s, and by changing the concentrations of gas-phase styrene (0.01-6.3 g m(-3)) and acetone (0.01-8.9 g m(-3)). the total elimination capacities were as high as 360 ... | 2010 | 20869172 |
| neural network models for biological waste-gas treatment systems. | this paper outlines the procedure for developing artificial neural network (ann) based models for three bioreactor configurations used for waste-gas treatment. the three bioreactor configurations chosen for this modelling work were: biofilter (bf), continuous stirred tank bioreactor (cstb) and monolith bioreactor (mb). using styrene as the model pollutant, this paper also serves as a general database of information pertaining to the bioreactor operation and important factors affecting gas-phase ... | 2011 | 21784184 |
| biotreatment of a gas-phase volatile mixture from fibreglass and composite manufacturing industries. | acetone, toluene and styrene (ats) are representative air pollutants emanating during the production process in fibreglass and composite manufacturing industries. in this study, the performance of a steady-state biofilter inoculated with the fungus sporothrix variecibatus was tested at different empty bed residence times (ebrts), and at different inlet concentrations of ats, corresponding to total pollutant loading rates ranging from 30 to 490 gm(-3)hour(-1). styrene was somewhat better removed ... | 2011 | 21911090 |
| biodegradation of gas-phase styrene using the fungus sporothrix variecibatus: impact of pollutant load and transient operation. | biofiltration of gas-phase styrene was studied using a newly isolated fungus sporothrix variecibatus, in a perlite biofilter, at inlet concentrations and gas-flow rates ranging from 0.13 to 14 g m(-3) and 0.075 to 0.34 m(3) h(-1), respectively, corresponding to empty bed residence times (ebrt) ranging between 91 and 20s. styrene loading rates were varied between 50 and 845 g m(-3) h(-1)and a maximum elimination capacity of 336 g m(-3) h(-1) was attained with nearly 65% styrene removal. on the ot ... | 2010 | 20149411 |
| performance of a fungal monolith bioreactor for the removal of styrene from polluted air. | gas-phase styrene removal using the fungus, sporothrix variecibatus was evaluated in a novel monolith bioreactor, receiving a continuous supply of nutrients from the trickling liquid phase. during the start-up process, the monolith reactor was operated for 22 days with relatively low styrene concentrations in the gas-phase (<0.4 g m(-3)). afterwards, continuous experiments were carried out at different inlet styrene concentrations, ranging between 0.06 and 2.5 g m(-3), and at two different flow ... | 2010 | 19944600 |
| styrene removal from polluted air in one and two-liquid phase biotrickling filter: steady and transient-state performance and pressure drop control. | a sporothrix variecibatus-inoculated biotrickling filter (btf) was examined for styrene removal, without and with the addition of silicone oil, at different empty bed residence times. the highest elimination capacities (ecs) were 172.8 (without silicone oil) and 670 g m(-3)h(-1) (with silicone oil), respectively, corresponding to a 4-fold improvement in presence of oil. the addition of silicone oil formed a well-coalesced emulsion of fungi and silicone oil, resulting in filter-bed clogging. clog ... | 2011 | 21531553 |