Investigation of SO2, NO and H2S oxidation in humid air by electron beam

Decomposition of sulfur compounds by radiolysis: I. Influential factors

“…Nichipor et al carried out an irradiation study for a mixed gas consisting of H 2 S (300-100 ppm), N 2 (80.5%), O 2 (11%), H 2 O (8.4%), NO (100-600 ppm), and SO 2 (150-500 ppm) at T = 393 K and I = 10 kGy s À1 [27][28]. As a result, diverse radicals such as…”

Decomposition of sulfur compounds by radiolysis: II. By-products and mechanisms

“…They reported that the H 2 S decomposition efficiency was 100% at 10 kGy and that the decomposed H 2 S was converted into SO 2 and H 2 SO 4 particles. Nichipor et al [16] theoretically calculated the removal efficiencies of mixed gases, which included NO (250 ppm), SO 2 (250 ppm), and H 2 S (500 ppm) by EB. They reported that the efficiency of 500 ppm H 2 S was >90% when the absorbed dose was 25 kGy.…”

“…Subsequently, EB control studies about odorous compounds such as ammonia, trimethylamine, and terpene have been reported [3,8,14]. Although some researchers have conducted studies to control odorous sulfur compounds, these investigations were limited to basic experiments [14][15][16][17]. Our previous study was carried out to examine the removal characteristics and efficiencies of odorous sulfur compounds using EB irradiation technology [18].…”

Decomposition of sulfur compounds by a radiolysis: III. A hybrid system and field application

“…However, most of these studies were focused on the reaction of sulfur compounds with OH radical or O 3 [41][42][43][44][45]. Moreover, to the best of our knowledge, previous works were concentrated only on individual sulfur compounds and were not carried out under the circumstances existing simultaneously in diverse compounds [35][36][37][46][47][48][49]. Therefore, additional studies should be conducted to understand complex decomposition mechanisms under various mixed odorous compounds.…”

“…Most of the previous studies on removing odorous sulfur compounds using EB were generally conducted to understand the RE and decomposition mechanism of individual compounds [23,24,[35][36][37][38]. However, these compounds exist simultaneous and various concentration ranges in the actual fields.…”