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Adsorption characteristics of benzene on biosolid adsorbent and commercial activated carbons

Journal Article · · Journal of the Air and Waste Management Association
; ; ; ; ;  [1]
  1. China Medical University, Taichung (Taiwan). Department of Risk Management
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This study selected biosolids from a petrochemical wastewater treatment plant as the raw material. The sludge was immersed in 0.5-5 M of zinc chloride (ZnCl{sub 2}) solutions and pyrolyzed at different temperatures and times. Results indicated that the 1-M ZnCl{sub 2}-immersed biosolids pyrolyzed at 500{sup o}C for 30 min could be reused and were optimal biosolid adsorbents for benzene adsorption. Pore volume distribution analysis indicated that the mesopore contributed more than the macropore and micropore in the biosolid adsorbent. The benzene adsorption capacity of the biosolid adsorbent was 65 and 55% of the G206 (granular-activated carbon) and BPL (coal-based activated carbon; Calgon, Carbon Corp.) activated carbons, respectively. Data from the adsorption and desorption cycles indicated that the benzene adsorption capacity of the biosolid adsorbent was insignificantly reduced compared with the first-run capacity of the adsorbent; therefore, the biosolid adsorbent could be reused as a commercial adsorbent, although its production cost is high. 18 refs., 9 figs., 3 tabs.

OSTI ID:
20752298
Journal Information:
Journal of the Air and Waste Management Association, Journal Name: Journal of the Air and Waste Management Association; ISSN JAWAEB; ISSN 1047-3289
Country of Publication:
United States
Language:
English

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Related Subjects

01 COAL, LIGNITE, AND PEAT
02 PETROLEUM
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
ACTIVATED CARBON
ADSORBENTS
ADSORPTION
BENZENE
BIODEGRADATION
COAL
COMPARATIVE EVALUATIONS
PETROCHEMICAL PLANTS
PORE STRUCTURE
PYROLYSIS
REGENERATION
SLUDGES
SORPTIVE PROPERTIES
WASTE PRODUCT UTILIZATION
WASTE WATER
WATER TREATMENT
ZINC CHLORIDES