Corn steep liquor as a nutritional source for biocementation and its impact on concrete structural properties

Abstract

Microbial-induced carbonate precipitation (MICP) has a potential to improve the durability properties and remediate cracks in concrete. In the present study, the main emphasis is placed upon replacing the expensive laboratory nutrient broth (NB) with corn steep liquor (CSL), an industrial by-product, as an alternate nutrient medium during biocementation. The influence of organic nutrients (carbon and nitrogen content) of CSL and NB on the chemical and structural properties of concrete structures is studied. It has been observed that cement-setting properties were unaffected by CSL organic content, while NB medium influenced it. Carbon and nitrogen content in concrete structures was significantly lower in CSL-treated specimens than in NB-treated specimens. Decreased permeability and increased compressive strength were reported when NB is replaced with CSL in bacteria-treated specimens. The present study results suggest that CSL can be used as a replacement growth medium for MICP technology at commercial scale.

Use of Industrial Wastes as Sustainable Nutrient Sources for Bacterial Cellulose (BC) Production: Mechanism, Advances, and Future Perspectives

“…This method, using CCH as a substrate to produce BC achieved up to 8.2 g/L of BC using 8% of CCH extract combined with steep corn liquor under optimized conditions [ 242 ]. The findings were parallel with research evidence that steep corn liquor is rich in nutrition, which supplied organic content during BC production, such as carbon and nitrogen [ 243 , 244 ].…”

Low-cost cultivation of Sporosarcina pasteurii strain in food-grade yeast extract medium for microbially induced carbonate precipitation (MICP) application

“…To date, only limited studies in the literature have reported the use of alternative nutritional sources to cultivate ureolytic bacteria for MICP application. The use of waste materials such as chicken manure effluent, corn steep liquor, lactose mother liquor and activated sludge from agricultural, dairy and bakery industries have been the focus of alternative nutritional source (Achal et al, 2010(Achal et al, , 2009Cuzman et al, 2015a;Joshi et al, 2018;Whiffin, 2004;Yoosathaporn et al, 2016). These attempts are mostly performed to limit the economic challenges faced for cultivating ureolytic bacterial in large volume (Anbu et al, 2016).…”

Transcriptome Mechanism of Utilizing Corn Steep Liquor as the Sole Nitrogen Resource for Lipid and DHA Biosynthesis in Marine Oleaginous Protist Aurantiochytrium sp.

“…These results are comparable to, or even higher than, those from traditional nitrogen sources such as yeast extract and peptone [25,26]. CSL is rich in not only organic nutrients (those with carbon and nitrogen contents), but also trace nutrients (with B vitamins and metal ions) [27], which are essential for cellular growth and lipid and DHA accumulation in Aurantiochytrium sp. [28].…”