title: Accelerating the sludge disintegration potential of a novel bacterial strain Planococcus jake 01 by CaCl2 induced deflocculation.
abstract: The present study investigates the impacts of phase separated disintegration through CaCl2 (calcium chloride) mediated biosurfactant producing bacterial pretreatment. In the initial phase of the study, the flocs were disintegrated (deflocculation) with 0.06g/gSS of CaCl2. In the subsequent phase, the sludge biomass was disintegrated (cell disintegration) through potent biosurfactant producing new novel bacteria, Planococcus jake 01. The pretreatment showed that suspended solids reduction and chemical oxygen demand solubilization for deflocculated - bacterially pretreated sludge was found to be 17.14% and 14.14% which were comparatively higher than flocculated sludge (treated with bacteria alone). The biogas yield potential of deflocculated - bacterially pretreated, flocculated, and control sludges were observed to be 0.322(L/gVS), 0.225(L/gVS) and 0.145(L/gVS) respectively. To our knowledge, this is the first study to present the thorough knowledge of biogas production potential through a novel phase separated biosurfactant bacterial pretreatment.
authors.affiliation: Department of Civil Engineering, Regional Centre of Anna University, Tirunelveli, India.
authors.forename: S
authors.initials: S
authors.lastname: Kavitha
authors.affiliation: Department of Civil Engineering, Regional Centre of Anna University, Tirunelveli, India.
authors.forename: T
authors.initials: T
authors.lastname: Saranya
authors.affiliation: Department of Civil Engineering, Thiagarajar College of Engineering, Madurai, India.
authors.forename: S
authors.initials: S
authors.lastname: Kaliappan
authors.affiliation: Department of Civil Engineering, Regional Centre of Anna University, Tirunelveli, India.
authors.forename: S
authors.initials: S
authors.lastname: Adish Kumar
authors.affiliation: Department of Civil and Environmental Engineering, Sungkyunkwan University, Seoul, South Korea.
authors.forename: Ick Tae
authors.initials: IT
authors.lastname: Yeom
authors.affiliation: Department of Civil Engineering, Regional Centre of Anna University, Tirunelveli, India. Electronic address: rajeshces@gmail.com.
authors.forename: J
authors.initials: J
authors.lastname: Rajesh Banu
mesh_terms: D000693:Anaerobiosis; D001673:Biodegradation, Environmental; D056804:Biofuels / Q000032:analysis; D057919:Biological Oxygen Demand Analysis; D018533:Biomass; D001709:Biotechnology / Q000379:methods; D002122:Calcium Chloride / Q000737:chemistry; D005427:Flocculation; D058642:Planococcus Bacteria / Q000254:growth & development / Q000378:metabolism*; D012722:Sewage / Q000737:chemistry / Q000382:microbiology*; D013501:Surface-Active Agents / Q000737:chemistry / Q000378:metabolism; D014865:Waste Disposal, Fluid / Q000379:methods*
chemical_list: D056804:Biofuels; D012722:Sewage; D013501:Surface-Active Agents; D002122:Calcium Chloride
keywords: Bacterial pretreatment; Biosurfactant; Chemical oxygen demand; Deflocculation; Suspended solids