Evaluation of photocatalytic thin film pretreatment on anaerobic degradability of exopolymer extracted biosolids for biofuel generation

V. Godvin Sharmila; M. Gunasekaran; S. Angappane; Guangyin Zhen; Ick Tae Yeom; J. Rajesh Banu

doi:10.1016/j.biortech.2019.01.124

Evaluation of photocatalytic thin film pretreatment on anaerobic degradability of exopolymer extracted biosolids for biofuel generation

V. Godvin Sharmila, M. Gunasekaran, S. Angappane, Guangyin Zhen, Ick Tae Yeom, J. Rajesh Banu

Graduate School of Water Resources

Research output: Contribution to journal › Article › peer-review

18 Scopus citations

Abstract

This study reports the result of sodium citrate induced exopolymer extraction on the photocatalytic thin film (TiO₂) pretreatment efficiency of waste activated sludge (WAS). TiO₂ is immobilized through DC spluttering method followed by annealing process. The exopolymer removal of 94.2% by sodium citrate (0.05 g/g SS) promotes better disintegration. This TiO₂ thin film efficiently extricate the intracellular components of exopolymer extracted sludge at 50 min increasing the solubilization to 19.33%. As a result, the exopolymer extracted sludge shows high methane generation (0.24 gCOD/gCOD) than the other (pretreated sludge without exopolymer removal – 0.12 gCOD/gCOD and raw sludge without treatment – 0.075 gCOD/gCOD). The methane generated in sodium citrate induced TiO₂ thin film pretreated sludge is 398.99 kWh. In cost analysis, it gives net cost of −57.46 USD/ton of sludge. In addition, the proposed method also accounts 51.3% of solid reduction.

Original language	English
Pages (from-to)	132-139
Number of pages	8
Journal	Bioresource Technology
Volume	279
DOIs	https://doi.org/10.1016/j.biortech.2019.01.124
State	Published - May 2019

Keywords

Cost analysis
Methane
Photocatalytic oxidation
Pretreatment
Sodium citrate

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.biortech.2019.01.124

Cite this

@article{47e1f111259a49fb8f27a3318186336e,

title = "Evaluation of photocatalytic thin film pretreatment on anaerobic degradability of exopolymer extracted biosolids for biofuel generation",

abstract = "This study reports the result of sodium citrate induced exopolymer extraction on the photocatalytic thin film (TiO2) pretreatment efficiency of waste activated sludge (WAS). TiO2 is immobilized through DC spluttering method followed by annealing process. The exopolymer removal of 94.2\% by sodium citrate (0.05 g/g SS) promotes better disintegration. This TiO2 thin film efficiently extricate the intracellular components of exopolymer extracted sludge at 50 min increasing the solubilization to 19.33\%. As a result, the exopolymer extracted sludge shows high methane generation (0.24 gCOD/gCOD) than the other (pretreated sludge without exopolymer removal – 0.12 gCOD/gCOD and raw sludge without treatment – 0.075 gCOD/gCOD). The methane generated in sodium citrate induced TiO2 thin film pretreated sludge is 398.99 kWh. In cost analysis, it gives net cost of −57.46 USD/ton of sludge. In addition, the proposed method also accounts 51.3\% of solid reduction.",

keywords = "Cost analysis, Methane, Photocatalytic oxidation, Pretreatment, Sodium citrate",

author = "\{Godvin Sharmila\}, V. and M. Gunasekaran and S. Angappane and Guangyin Zhen and \{Tae Yeom\}, Ick and \{Rajesh Banu\}, J.",

note = "Publisher Copyright: {\textcopyright} 2019 Elsevier Ltd",

year = "2019",

month = may,

doi = "10.1016/j.biortech.2019.01.124",

language = "English",

volume = "279",

pages = "132--139",

journal = "Bioresource Technology",

issn = "0960-8524",

publisher = "Elsevier Ltd",

}

TY - JOUR

T1 - Evaluation of photocatalytic thin film pretreatment on anaerobic degradability of exopolymer extracted biosolids for biofuel generation

AU - Godvin Sharmila, V.

AU - Gunasekaran, M.

AU - Angappane, S.

AU - Zhen, Guangyin

AU - Tae Yeom, Ick

AU - Rajesh Banu, J.

PY - 2019/5

Y1 - 2019/5

N2 - This study reports the result of sodium citrate induced exopolymer extraction on the photocatalytic thin film (TiO2) pretreatment efficiency of waste activated sludge (WAS). TiO2 is immobilized through DC spluttering method followed by annealing process. The exopolymer removal of 94.2% by sodium citrate (0.05 g/g SS) promotes better disintegration. This TiO2 thin film efficiently extricate the intracellular components of exopolymer extracted sludge at 50 min increasing the solubilization to 19.33%. As a result, the exopolymer extracted sludge shows high methane generation (0.24 gCOD/gCOD) than the other (pretreated sludge without exopolymer removal – 0.12 gCOD/gCOD and raw sludge without treatment – 0.075 gCOD/gCOD). The methane generated in sodium citrate induced TiO2 thin film pretreated sludge is 398.99 kWh. In cost analysis, it gives net cost of −57.46 USD/ton of sludge. In addition, the proposed method also accounts 51.3% of solid reduction.

AB - This study reports the result of sodium citrate induced exopolymer extraction on the photocatalytic thin film (TiO2) pretreatment efficiency of waste activated sludge (WAS). TiO2 is immobilized through DC spluttering method followed by annealing process. The exopolymer removal of 94.2% by sodium citrate (0.05 g/g SS) promotes better disintegration. This TiO2 thin film efficiently extricate the intracellular components of exopolymer extracted sludge at 50 min increasing the solubilization to 19.33%. As a result, the exopolymer extracted sludge shows high methane generation (0.24 gCOD/gCOD) than the other (pretreated sludge without exopolymer removal – 0.12 gCOD/gCOD and raw sludge without treatment – 0.075 gCOD/gCOD). The methane generated in sodium citrate induced TiO2 thin film pretreated sludge is 398.99 kWh. In cost analysis, it gives net cost of −57.46 USD/ton of sludge. In addition, the proposed method also accounts 51.3% of solid reduction.

KW - Cost analysis

KW - Methane

KW - Photocatalytic oxidation

KW - Pretreatment

KW - Sodium citrate

UR - https://www.scopus.com/pages/publications/85060851698

U2 - 10.1016/j.biortech.2019.01.124

DO - 10.1016/j.biortech.2019.01.124

M3 - Article

C2 - 30716605

AN - SCOPUS:85060851698

SN - 0960-8524

VL - 279

SP - 132

EP - 139

JO - Bioresource Technology

JF - Bioresource Technology

ER -

Evaluation of photocatalytic thin film pretreatment on anaerobic degradability of exopolymer extracted biosolids for biofuel generation

Abstract

Keywords

UN SDGs

Access to Document

Other files and links

Fingerprint

Cite this