Noor Fatima1, Muhammad Irfan2,*, Hafiz Abdullah Shakir1, Javed Iqbal Qazi1
...e with three levels like sulfuric acid concentrations (0.6%, 0.8%, 1% v/v), biomass loading (5%, 10%, 15% w/v), and residence time (4, 6 and 8h). After pretreatment process, cellulase production was achieved by solid substrate which was conducted in 250mL capacity Erlenmeyer flask in which incubation of Bacillus subtilis was carried out for 24 h of fermentation period at temperature of 50oC. Results showed that cellulase production was greatl...
Naeem Ejaz*, Daulat Khan**, Usman Ali Naeem*, Muhammad Ali Shamim*, Muhammad Fiaz Tahir*, Faisal Shabbir*, Jawad Hussain*
DETERIORATION OF ORDINARY PORTLAND CEMENT AND FLY-ASH BASED GEO-POLYMER CONCRETES DUE TO SULFATE ATTACK UNDER THE ACTION OF SULFURIC ACID AND WASTEWATER
...rioration happens due to sulfuric acid reaction with treatment units and sewer materials. Geo-polymer binders especially fly ash (FA) is an acid resistant and can be used as a substitute binder for sewer construction. This research work highlights the laboratory results of fly ash based geo-polymer concrete and effects on its durability under sulfuric acid exposure. Class ‘F’ fly ash was used ...

Matiullah Khan1*, Humera Arif2, Muhammad Rasheed2, Motsim Billah3 and Shoaib Ahmad

...amounts and dilutions of sulfuric acid. The results showed that application of H2SO4 @0.6L + 50% dilution (v/v) per kg Guldania RP gave significantly highest available P content (15.61%), while Kakul RP released maximum P (15.47%) by application of H2SO4 @0.60 L+ 55% v/v dilution, per kg RP. The Paswal RP released maximum P by applying H2SO4 @0.55 L+ 55% v/v dilution, per kg RP. The periodic analysis of the reacted RP showed that availability of P increased wi...

Pakistan Journal of Agricultural Research

September

Vol. 33, Iss. 3, Pages 422-691

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