Development of hybrid processes for the removal of volatile organic compounds, plasticizer, and pharmaceutically active compound using sewage sludge, waste scrap tires, and wood chips as sorbents and microbial immobilization matrices

2018 ◽  
Vol 26 (12) ◽  
pp. 11591-11604 ◽  
Author(s):  
Renata Alves de Toledo ◽  
U. Hin Chao ◽  
Tingting Shen ◽  
Qihong Lu ◽  
Xueqing Li ◽  
...  
2021 ◽  
Author(s):  
Antonio José Fernández-Espinosa ◽  
Arancha Peña-Heras ◽  
Sabina Rossini-Oliva

Abstract A laboratory study was carried out to investigate the emissions of volatile organic compounds (VOCs) from a mining soil amended with sewage sludge and irrigated with wastewater in comparison to the non-amended soil, with or without tomato plants (Lycopersicum esculentum L.). The study detected a total of nine VOCs emitted from the polluted soil: benzene, toluene, ethylbenzene, p-xylene, m-xylene, o-xylene, styrene, benzene-1,2,4-trimethyl and tetrachloroethylene, among which the most abundant were toluene, m-xylene and styrene (82.2, 4.1 and 3% respectively). The results showed that soil amended with sewage sludge reduced the emission of VOCs (styrene in pots without plants and benzene and xylenes in pots with plants). On the other hand, tomato plants contributed to increase significantly the emissions of all VOCs except styrene in both amended and non-amended soils.


2014 ◽  
Vol 35 (4) ◽  
pp. 435-445
Author(s):  
Alvydas Zagorskis ◽  
Rasa Vaiškūnaitė

Abstract Recent studies in the area of biological air treatment in filters have addressed fundamental key issues, such as a biofilter bed of different origin composed of natural zeolite granules, foam cubes and wood chips. When foam and zeolite are mixed with wood chips to remove volatile organic compounds from the air, not only biological but also adsorption air purification methods are accomplished. The use of complex purification technologies helps to improve the efficiency of a filter as well as the bed service life of the filter bed. Investigations revealed that microorganisms prevailing in biological purification, can also reproduce themselves in biofilter beds of inorganic and synthetic origin composed of natural zeolite and foam. By cultivating associations of spontaneous microorganisms in the filter bed the dependencies of the purification efficiency of filter on the origin, concentration and filtration time of injected pollutants were determined. The highest purification efficiency was obtained when air polluted with acetone vapour was supplied to the equipment at 0.1 m/s of superficial gas velocity. When cleaning air from volatile organic compounds (acetone, toluene and butanol), under the initial pollutant concentration of ~100 mg/m3, the filter efficiency reached 95 %.


2019 ◽  
Vol 291 ◽  
pp. 121857 ◽  
Author(s):  
Daniel González ◽  
Nagore Guerra ◽  
Joan Colón ◽  
David Gabriel ◽  
Sergio Ponsá ◽  
...  

2020 ◽  
Vol 719 ◽  
pp. 137405 ◽  
Author(s):  
Jung Eun Lee ◽  
Yong Sik Ok ◽  
Daniel C.W. Tsang ◽  
JiHyeon Song ◽  
Sang-Chul Jung ◽  
...  

2020 ◽  
Vol 105 ◽  
pp. 317-327 ◽  
Author(s):  
Linbo Qin ◽  
Zhe Xu ◽  
Lei Liu ◽  
Haijun Lu ◽  
Yong Wan ◽  
...  

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