Natural Biocides for Mitigation of Sulphate Reducing Bacteria

Abstract

This study addresses the potential usage of various herbaceous plants extract including betel leave extract (BLE), green tea (GTE), turmeric (TE), belalai gajah (BGE), garlic extracts (GE), and manjakani extracts (ME) as future biocides of SRB that are natural and nontoxic. Study revealed that retardation of growth was obtained after addition of 5mL of natural biocides to 100 mL of the culture. Reduced biomass growth was observed with most of the tested biocides, dictated by lower biomass contents accepts for ginger and garlic. The planktonic growth was successively suppressed with addition of GTE, TE, and BGE, where the biomass production was decreased by more than 80.0% compared to the control experiments. GRE increased the growth of planktonic bacteria while the GE induced the formation of biofilms, showed by increase in biomass productions with over 23.4% and 77.46% enhancements, respectively. These results suggest that turmeric, green tea, and belalai gajah plants extracts are highly potential biocidal agents for mitigating SRB, thus controlling the effect of MIC on metal surfaces. However, the chemical stability, potential toxicity, and consistent performance of the extracts need further investigation for optimization of its use on a real field scale.

The impact of bacterial diversity on resistance to biocides in oilfields

“…Green molecules are becoming a new trend due to their lower environmental impact and renewable sources. Natural oils such as lemon 77 , neem 78 , and clove oils 79 , 80 and plant extracts such as those of green tea 81 and garlic 81 , amino acids 82 and biosurfactants 83 have all been successfully evaluated against oilfield microorganisms and biofilms. Another way to broaden the effectiveness of water treatment is the use of synergistic molecules, especially those with different modes of action or cell targets.…”

Inhibition of Sulfate‐Reducing Bacteria by Para‐amino‐N‐((1‐Alkylpyridin‐1‐Ium Bromide)‐4‐Yl) Benzamide Surfactants and Surfactant‐Coated Silver Nanoparticles

“…The situation becomes more acute upon the formation of SRB containing biofilms. In order to control the deleterious effects of SRB, the use of synthetic and natural biocides have been suggested (Md Zain et al, 2018); however, their safety and environmental impact remained a major concern, prompted by the intriguing properties of ionic liquids (Zhang et al, 2020) and the quest for new biocides. Silver nanoparticles (AgNP) exhibit strong inhibitory effects toward a broad spectrum of bacterial strains (Cheng and Yao, 2005).…”

Biomonitoring Studies and Preventing the Formation of Biogenic H2S in the Wierzchowice Underground Gas Storage Facility

“…As part of biomonitoring tests, the following are performed: (i) microbiological tests (quantitative method, serial dilution method, and sequencing method) of formation waters focused on the presence of SRB (sulphate reducing bacteria), capable of producing H 2 S in the reservoir [5,[14][15][16][17][18][19] (ii) microbiological tests (qualitative method and sequencing method) of formation waters for the presence of bacteria which oxidize hydrogen sulphide and reduced sulphur compounds [14,15,[20][21][22], (iii) analyses of the chemical content of hydrogen sulphide and sulphides in formation waters, (iv) research on the effectiveness of biocides [6,23] and hydrogen sulphide scavengers in relation to biogenic hydrogen sulphide and determination of their dosage in UGS conditions based on microbiological and chemical tests of reservoir fluids [6,[23][24][25][26][27][28], (v) analysis of the composition of gas pumped and recovered from UGS, and (vi) analysis of the composition of gas pumped and recovered from UGS.…”