This work aimed at understanding the combined effect of sludge pH, temperature, and external pressure on the efficiency of sewage sludge ultrasound (US) pretreatment. Based on the evolution of both the degree of sludge disintegration (DDCOD) and pH, application of 40 mgNaOH/gTS during 30 min was selected for chemical pretreatment. Mechanical and thermal effects induced by cavitation contributed...

Supramolecular nanorods of 5,15-diaryl-substituted porphyrins prepared by sonication method exhibit a broad absorption property, which is confirmed by photocurrent generation measurement in a photoelectrochemical cell.

The object of research is the process convective and combined drying apple raw materials treated before dehydration in an ultrasonic bath. use pretreatment solves issue intensifying maintaining quality product. Sonication for 5 min reduces by 13.7 %, at 10 processing – 27.8 % compared to traditional drying. With increasing time 20 minutes, rate deteriorates. minutes under heating does not inten...

Carica papaya leaf extracts from four different extraction methods (cold-water, hot-water, sonication and supercritical fluid), were characterized using physico-chemical analysis. Sonication showed the highest percentage yield of crude (6.76%) lowest fluid (1.83%). The Infrared (IR) spectrum cold-water extract demonstrated most similarity functional group to quercetin. Likewise, thermal analysi...

As-produced carbon nanotubes come in bundles that must be exfoliated for practical applications in nanocomposites. Sonication not only causes the exfoliation of nanotube bundles but also unwanted scission. An understanding of how precisely sonication induces the scission and exfoliation of nanotubes will help maximising the degree of exfoliation while minimising scission. We present a theoretic...

The use of nanomaterial as a finishing agent in the textile industry continues to be developed. Nanoparticle zinc oxide (ZnONP) has anti-UV properties so that it can used protect color fabric from fading. Constraints using functionalization on are process application and also its poor adhesion. This research aims optimize ZnONP coating cotton-indigo maximized adsorbed with good durability. Opti...

Gold nanoparticles were synthesized by chemical reduction of HAuCl4 inside the pores of a polycarbonate-based membrane followed by dissolving the membrane in dichloromethane and further sonication. Sonication time as the main affecting factor on the nanoparticle size was investigated. The characterization by transmission electron microscopy showed the formation of gold nanoparticles with diamet...