Modeling Solar Drying Rate of Wastewater Sludge

Seginer, Ido; Bux, M.

doi:10.1080/07373930600952362

Cited by 41 publications

(22 citation statements)

References 6 publications

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“…The natural solar drying is subject of many experimental studies [3,[7][8][9]. The performances of the drying systems change through the period of use, the geographical situation of the place where the experimental work was done, what is more it depends on the origin of the wastewater sludge [10].…”

Section: Introductionmentioning

confidence: 99%

Solar Greenhouse Drying of Wastewater Sludges Under Arid Climate

Belloulid

Hamdi

Mandi

et al. 2016

Waste Biomass Valor

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Wastewater sludges were dried in an open greenhouse pilot in order to provide experimental data about solar greenhouse drying under an arid climate during hot and cold periods. Climatic conditions, solids contents and geometric dimensions were constantly measured. The shape change of samples was constantly recorded with digital scan. The results indicated that solar greenhouse drying reduced the moisture content from about 4 kg water/kg DS to 0.08 kg water/kg DS in hot period and to 0.2 kg water/kg DS in cold period in only 72 h. The higher values of drying rate were obtained in hot season. The maximum ranges obtained were 0.2 kg water/kg DS.h and 0.13 kg water/kg DS.h in hot and cold campaigns, respectively. Furthermore, a large volume reduction representing at least 80 % of initial volume was observed in both periods after 72 h of drying process. Also, shrinkage and cracks phenomena took place inside sludges. An improvement of the microbial condition of treated sludges was noted in hot campaign with a decrease by one order of magnitude after only 24 h for total and fecal coliforms and after 72 h for Clostridium perfringens, Escherichia coli, Pseudomonas aeruginosa and Staphylococcus aureus contents. These pathogenic bacteria were almost constant for fresh and dry sludges in cold period. The paper recommends the solar drying in hot as in cold periods under arid climate considering its average drying rate outside the rainy periods.

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Section: Introductionmentioning

confidence: 99%

Solar Greenhouse Drying of Wastewater Sludges Under Arid Climate

Belloulid

Hamdi

Mandi

et al. 2016

Waste Biomass Valor

View full text Add to dashboard Cite

show abstract

“…Brain imaging research into mathematic implementation is still limited (Tang et al, 2006). Building a modeling capability for a physical phenomenon using differential equations is central to chemical engineering professionals (Arlabosse and Chitu, 2007;Hwang et al, 2006;Islam et al, 2007;Kung, 2006;Lee et al, 2006Lee et al, , 2007Otawara and Kitamura, 2006;Tien and Ramarao, 2006;Seginer and Bux, 2006;Seginer et al, 2007;Tao et al, 2006). Equations have the same meaning in content comprehension and mental calculation across different cultures and languages.…”

Section: Introductionmentioning

confidence: 97%

Neuroimaging study of partial differential equation reading in brain

Wang

Lee

2008

Journal of the Chinese Institute of Chemical Engineers

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“…Brain imaging research into mathematic implementation is still limited (Tang et al, 2006). However, building modeling capability for a physical phenomenon using differential equations is central to chemical engineering education (Arlabosse and Chitu, 2007;Hwang et al, 2006;Islam et al, 2007;Kung, 2006;Lee et al, 2006Lee et al, , 2007Otawara and Kitamura, 2006;Seginer and Bux, 2006;Seginer et al, 2007;Tao et al, 2006;Tien and Ramarao, 2006). Wang et al (2008) for the first time measured the brain activities in joke and equation reading.…”

Section: Introductionmentioning

confidence: 97%