Abstract
This study investigated the characterization and flocculation mechanism of a bioflocculant prepared using potato starch wastewater. The optimal culture conditions of this strain were determined as 4 g K2HPO4, 2 g KH2PO4, 0.2 g MgSO4, 0.1 g NaCl, and 2.0 g urea dissolved in 1.0 L potato starch wastewater with no need of adding carbon sources or adjusting pH value. Production of this bioflocculant was positively associated with cell growth, and a highest value of 0.81 g/L was obtained. During the kaolin suspension flocculation, charge neutralization and interparticle bridging were proposed as the main reasons for enhanced performance. Further, with potato starch wastewater, chemical oxygen demand (COD) and turbidity removal rates reached 52.4 and 81.7 %, respectively, at pH 7.5 when the bioflocculant dose was adjusted to 30 mg/L.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
Explore related subjects
Discover the latest articles, news and stories from top researchers in related subjects.References
APHA (2005) Standard methods for the examination of water and wastewater, 21st edn. APHA, Washington, DC
Gong WX, Wang SG, Sun XF, Liu XW, Yue QY, Gao BY (2008) Bioflocculant production by culture of Serratia ficaria and its application in wastewater treatment. Bioresour Technol 99:4668–4674
Guo JY (2015) Characteristics and mechanisms of Cu(II) sorption from aqueous solution by using bioflocculant MBFR10543. Appl Microbiol Biotechnol 99:229–240
Guo JY, Yang CP, Zeng GM (2013) Treatment of swine wastewater using chemically modified zeolite and bioflocculant from activated sludge. Bioresour Technol 143:289–297
Guo JY, Yang CP, Peng LY (2014) Preparation and characteristics of bacterial polymer using pre-treated sludge from swine wastewater treatment plant. Bioresour Technol 152:490–498
Guo JY, Yu J, Xin X, Zou CW, Cheng QF, Yang HJ, Nengzi LC (2015) Characterization and flocculation mechanism of a bioflocculant from hydrolyzate of rice stover. Bioresour Technol 177:393–397
Li Z, Zhong S, Lei HY, Chen RW, Yu Q, Li HL (2009) Production of a novel bioflocculant by Bacillus licheniformis X14 and its application to low temperature drinking water treatment. Bioresour Technol 100:3650–3656
Li YM, Li Q, Hao DK, Hu ZH, Song DX, Yang M (2014) Characterization and flocculation mechanism of an alkali-activated polysaccharide flocculant from Arthrobacter sp. B4. Bioresour Technol 170:574–577
Liu W, Yuan H, Yang J, Li B (2009) Characterization of bioflocculants from biologically aerated filter backwashed sludge and its application in dying wastewater treatment. Bioresour Technol 100:2629–2632
Liu JX, Yue QY, Gao BY, Wang Y, Li Q, Zhang PD (2013) Research on microbial lipid production from potato starch wastewater as culture medium by Lipomyces starkeyi. Water Sci Technol 67:1802–1808
More TT, Yan S, Hoang NV, Tyagi RD, Surampalli RY (2012) Bacterial polymer production using pre-treated sludge as raw material and its flocculation and dewatering potential. Bioresour Technol 121:425–431
Pu SY, Qin LL, Che JP, Zhang BR, Xu M (2014) Preparation and application of a novel bioflocculant by two strains of Rhizopus sp. using potato starch wastewater as nutrilite. Bioresour Technol 162:184–191
Ruan M, Yang ZH, Zeng GM, Xiong LJ, Tao R, Wang RJ, Liu YS (2007) Flocculating capability and mechanism of bioflocculant produced by Paenibacillus polymyxa GA1. Environ Sci China 28:2336–2341
Sun J, Zhang XH, Miao XJ, Zhou JT (2012) Preparation and characteristics of bioflocculants from excess biological sludge. Bioresour Technol 126:362–366
Wang L, Ma F, Lee DJ, Wang AJ, Ren NQ (2013) Bioflocculants from hydrolysates of corn stover using isolated strain Ochrobactium ciceri W2. Bioresour Technol 145:259–263
Xia SQ, Zhang ZQ, Wang XJ, Yang AM, Chen L, Zhao JF, Leonard D, Jaffrezic-Renault N (2008) Production and characterization of a bioflocculant by Proteus mirabilis TJ-1. Bioresour Technol 99:6520–6527
Yang ZH, Huang J, Zeng GM, Ruan M (2009) Optimization of flocculation conditions for kaolin suspension using the composite flocculant of MBFGA1 and PAC by response surface methodology. Bioresour Technol 100:4233–4239
Yim JH, Kim SJ, Ahn SH, Lee HK (2007) Characterization of a novel bioflocculant, p-KG03, from a marine dinoflagellate, Gyrodinium impudicum KG03. Bioresour Technol 98:361–367
Zhang YY, Yang ZH, Zeng GM, Huang J, Wei SM, Feng J (2013) Microbial flocculant MBFGA1 preliminary structure identification and research on flocculation mechanism. Environ Sci China 33:278–285
Zhao G, Ma F, Wei L, Chua H (2012) Using rice straw fermentation liquor to produce bioflocculants during an anaerobic dry fermentation process. Bioresour Technol 113:83–88
Zheng Y, Ye ZL, Fang XL, Li YH, Cai WM (2008) Production and characteristics of a bioflocculant produced by Bacillus sp. F19. Bioresour Technol 99:7686–7691
Acknowledgments
The authors are thankful to the project (KYTZ201405) supported by the Scientific Research Foundation of Chengdu University of Information Technology (CUIT) and the Program of Education Department of Sichuan Province (15ZB0178).
Conflict of interest
The authors declare that they have no conflict of interest.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Guo, J., Lau, A.K., Zhang, Y. et al. Characterization and flocculation mechanism of a bioflocculant from potato starch wastewater. Appl Microbiol Biotechnol 99, 5855–5861 (2015). https://doi.org/10.1007/s00253-015-6589-y
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00253-015-6589-y