Abstract：
:In this study, pine needles were converted to biochar (BC) at different pyrolysis temperatures of 300, 500, and 700 °C to sorb trichloroethylene (TCE), and the changes in BC properties with each temperature were evaluated. Pyrolysis temperature showed a pronounced effect on BC properties. Decreases in molar H/C and O/C ratios resulted from removing O- and H-containing functional groups with increasing temperature, and produced high aromaticity and low polarity BCs. BCs produced at higher temperature showed greater TCE removal efficiency from water due to their high surface area, micro-porosity, and carbonized extent. The performance of various BCs for TCE removal was assessed by the Freundlich, Langmuir, Temkin, and Dubinin-Radushkevich adsorption models, among which the Temkin and Dubinin-Radushkevich models best described TCE adsorption onto various BCs, indicating prevailing sorption mechanism as pore-filling.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Ahmad M,Lee SS,Rajapaksha AU,Vithanage M,Zhang M,Cho JS,Lee SE,Ok YSdoi
10.1016/j.biortech.2013.06.033subject
Has Abstractpub_date
2013-09-01 00:00:00pages
615-22eissn
0960-8524issn
1873-2976pii
S0960-8524(13)00952-8journal_volume
143pub_type
杂志文章abstract：:To improve microalgae harvesting efficiency and to reduce the addition of chemicals in the buoy-bead flotation process, a novel buoy-bead flotation approach has been developed for harvesting Chlorella vulgaris, using surface-layered polymeric microspheres (SLPMs). Next, the detachment of microalgae cell-SLPM aggregate...
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