Microbial conversion of sulfur dioxide in flue gas to sulfide using bulk drug industry wastewater as an organic source by mixed cultures of sulfate reducing bacteria

Designing a reliable leak bio-detection system for natural gas pipelines

“…The best option (stage 11), determined on the basis of the h-set of criteria pertinent to experimental set-ups (see Section 2), is presented by a novel biosensor (Fig. 7), which utilizes (a) a pre-treatment unit that converts gas hydrogen sulfide to sulfate ions in an aqueous solution [181], (b) a microbial cascade unit for converting sulfates to sulfides, adapted from [182], and (c) the horseradish peroxidase biosensor of Liu et al [164] (the 8th system in Table 5), which detects the inflow sulfides from the degree of their inhibition to the enzyme activity. This biosensor option, although still untested as complete set-up, has been rendered feasible at reasonable development costs, especially as per h 2 , h 3 and h 7 criteria, as (i) it depends on a simple assembly that can be developed applying continuous innovative action, (ii) the system is presumably interference-free and can handle the reactivity of the analyte, and (iii) the sensitivity and selectivity are expected to be more than adequate for the expected concentrations.…”

Absorption of Sulfur Dioxide by Iron(II) Hydroxide Solution in a Multiplate Bubble Column under Magnetic Field

“…Different techniques, such as biological desulfurization 22, 23 and desulfurization with ionic liquids 24–26, have also been developed. In addition to being environmentally friendly and highly efficient, such techniques also bring problems such as high complexity in industrial operation, high viscosity, and high commercial capital costs.…”

Reclamation of Elemental Sulfur from Flue Gas Biodesulfurization Waste Sludge

“…Furthermore, the process regenerates and recycles the flue gas scrubbing solutions so as to minimize the generation of waste effluent streams. [2][3][4][5] This biotechnology process was first developed for hydrosulfuric acid (H 2 S) removal from sour gases in several industries (e.g., pulp and paper, mining, and petrochemical industries). 3,4,6 -9 This process was then further developed for SO 2 removal from flue gases.…”

“…3,4,6 -9 This process was then further developed for SO 2 removal from flue gases. 5,10 In 2006, a power plant in Yixing, Jiangsu province of China, was the first to operate a full-scale desulfurization system that used the biotechnology to remove SO 2 from the flue gas of coal-firing boilers. These Yixing operations have been documented elsewhere 1 and are only briefly described herein.…”