Abstract:

The data involves chiefly, the use of halloysite clay nanotubes (HNT) in forming Pickering emulsions with oil and water. The halloysites were functionalised using octadecyltrimethoxysilane (ODTMS) and hexadimethylsilane (HMDS) in order to hydrophobize the halloysite and form better Pickering emulsions. The bacterial affinity of halloysites in general and modified halloysite was tested using the bacterial strain, Alcanivorax borkumensis. The bacteria was obtained from ATCC and was used in several toxicity and emulsion experiments. The onus of the study was to study the affinity of the oil-degrading bacteria to HNTs and hydrophobized HNT and the resultant toxicity.

Suggested Citation:

Renata Munillina, Abhishek Panchal, Yuri Lvov, Rawil Fakhrullin. 2016. Clay nanotube Pickering emulsions for spill oil bioremediation and catalytic formulations. Distributed by: GRIIDC, Harte Research Institute, Texas A&M University–Corpus Christi. doi:10.7266/N73X8533

Publications:

Von Klitzing, R., Stehl, D., Pogrzeba, T., Schomäcker, R., Minullina, R., Panchal, A., … Lvov, Y. (2016). Halloysites Stabilized Emulsions for Hydroformylation of Long Chain Olefins. Advanced Materials Interfaces, 4(1), 1600435. doi:10.1002/admi.201600435

Purpose:

Developing better herding and dispersant systems for oil bioremediation using halloysite clay nanotubes

Data Parameters and Units:

Data for figure 2A.xlsx: halloysite concentration (0.25wt.%, 0.5wt.%, or 1wt.%), diameter of Pickering emulsions (um), vortex time (1 min, 3 min). Data for figure 2B.xlsx: halloysite concentration (0.25wt.%, 0.5wt.%, or 1wt.%), diameter of Pickering emulsions (um), time-days after emulsification formation (1, 3, 7). Data for figure 4.xlsx: 1wt.% halloysite (short, medium, or long), diameter of Pickering emulsions (um), probability Data for figure 6.xlsx: solution (Emulsions with 14a halloysites functionalized with hexadimethylsilane (HMDS) and plain deionized water; Emulsions with 14a halloysites functionalized with hexadimethyldislazane (HMDS) and 0.2M NaCl solution; Emulsions with 14a halloysites functionalized with hexadimethyldislazane (HMDS) and 0.6M NaCl solution; Emulsions with pristine, non-functionalized 14a halloysites and plain deionized water; Emulsions with pristine, non-functionalized 14a halloysites and 0.2M NaCl solution; Emulsions with pristine, non-functionalized 14a halloysites and 0.6M NaCl solution; Emulsions with 14a halloysites functionalized with octadecyltrimethoxysilane (ODTMS) and plain deionized water; Emulsions with 14a halloysites functionalized with octadecyltrimethylsilane (ODTMS) and 0.2M NaCl solution; Emulsions with 14a halloysites functionalized with octadecyltrimethylsilane (ODTMS) and 0.6M NaCl solution), probability, diameter of Pickering emulsions(um). Data for figure 9.xlsx: Time (hours passed, t0 = start), halloysite concentration (0.5mg/mL, 1 mg/mL, 1.5 mg/mL, 2.5 mg/mL),optical density (absorbance) of bacterial suspensions. Definitions of codes used in data files: Code (concentration) [definition]: US (0.25%, 0.5%, 1%) [halloysites from batch # 1 acquired from Applied Minerals Inc, NY followed by percentages by weight]; 14a (0.25%, 0.5%, 1%) [halloysites from batch # 14a acquired from Applied Minerals Inc, NY followed by percentages by weight]; Short HNT [Short length halloysite clay nanotubes]; Medium HNT [Medium length halloysite clay nanotubes]; Long HNT [Long length halloysite clay nanotubes]; 14a-HMDS H2O [Emulsions with 14a halloysites functionalized with hexadimethyldislazane (HMDS) and plain deionized water]; 14a-HMDS (0.2M, 0.6M) [Emulsions with 14a halloysites functionalized with hexadimethyldislazane (HMDS) and 0.2M 0.6M NaCl solutions respectively]; 14a-ODTMS H2O [Emulsions with 14a halloysites functionalized with octadecyltrimethylsilane (ODTMS) and plain deionized water]; 14a-ODTMS (0.2M, 0.6M)[Emulsions with 14a halloysites functionalized with octadecyltrimethylsilane (ODTMS) and 0.2M 0.6M NaCl solutions respectively]; Pristine 14a H2O [Emulsions with pristine, non-functionalized 14a halloysites and plain deionized water); Pristine 14a (0.2M, 0.6M) (Emulsions with pristine, non-functionalized 14a halloysites and 0.2M 0.6M NaCl solutions respectively]; Bare H20, [Emulsions with pristine, non-functionalized 14a halloysites and plain deionized water]; Bare (0.2 M, 0.6 M) [Emulsions with pristine, non-functionalized 14a halloysites and 0.2M 0.6M NaCl solutions respectively]; control [Control sample with no halloysite];0,5 mg/ml [Sample with 0.5mg/mL halloysites]; 1 mg/ml [Sample with 1 mg/mL halloysites]; 1,5 mg/ml [Sample with 1.5mg/mL halloysites]; 2,5 mg/ml [Sample with 2.5mg/mL halloysites]

Methods:

Data for figure 2A.xlsx: Halloysite was added to model Gulf oil in water (with a ratio of 1:3), measurements were collected the same day. Data for figure 2B.xlsx: Halloysite was added to model Gulf oil in water (with a ratio of 1:3). Data for figure 4.xlsx: Hydrophobized halloysite was added to pure water, measurements were collected after 1 week. Data for figure 6.xlsx: Halloysite was added to either pure water, 0.2 M NaCl or 0.6 M NaCl and measurements were collected after 1 week. Data for figure 9.xlsx: Halloysite was added to Alcanivorax borkumensis cells, measurements were made in real time.

Individual Files: