Bioconversion of lignocellulosic wastes to zwitterionic biosurfactants by an alkaliphilic bacterium: Process development and product characterization

Copper and chromium removal from industrial sludge by a biosurfactant-based washing agent and subsequent recovery by iron oxide nanoparticles

“…Cell-bound glycolipid from Weissella cibaria PN3 has been applied as a main component in biosurfactant-based dispersants for marine oil spill remediation 9 ; thus, this study only focused on the use of extracellular glycolipid. Brevibacterium casei NK8 produces a mixture of lipopeptide and phospholipids 8 . The bacterium was cultured under alkaline conditions to allow the utilization of 5% (w/w) coconut oil cake as a substrate following Khondee et al 8 .…”

“…The washing procedure is simple, cost-effective, and fast; however, the washing agent should be environmentally friendly, biodegradable, and inexpensive to prevent secondary environmental pollution 6 . In this study, biosurfactant-based washing agents were formulated by mixing biosurfactants from 2 bacteria, Weissella cibaria PN3 and Brevibacterium casei NK8, which have different molecular structures and properties 7 , 8 . Each biosurfactant has been investigated for its potential application in environmental remediation and agricultural enhancement 8 , 9 , however, the mixing of these two biosurfactants has never been conducted.…”

“…In this study, biosurfactant-based washing agents were formulated by mixing biosurfactants from 2 bacteria, Weissella cibaria PN3 and Brevibacterium casei NK8, which have different molecular structures and properties 7 , 8 . Each biosurfactant has been investigated for its potential application in environmental remediation and agricultural enhancement 8 , 9 , however, the mixing of these two biosurfactants has never been conducted. Biosurfactants are emerging as suitable alternatives to petroleum-derived surfactants because they are more sustainable in many stages of the product lifecycle 10 .…”

“…The sludge contained high concentrations of Cu (> 4500 mg/kg) and Cr (> 5000 mg/kg) and had been produced in large amounts annually. Biosurfactants from Weissella cibaria PN3 and Brevibacterium casei NK8 were selected based on their different molecular structures and potential cost reduction when using food and agro-industrial wastes as substrates 7 , 8 . The nontoxic and recyclable Fe 3 O 4 nanoparticles were synthesized by a simple coprecipitation method, and the effect of residual biosurfactant and pH in the washing agent on the activity of nanoparticles was investigated.…”

Advances in stabilization of metallic nanoparticle with biosurfactants- a review on current trends

“…Depending on the molecular weight, two main categories are distinguished: low molecular weight biosurfactants and high molecular weight biosurfactants [ 67 ]. Table 2 describes the literature studies on the different classifications of biosurfactants and their properties.…”