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This study presents an investigation for comparing the regeneration process of two activated carbons saturated with Basic Blue 9 (BB9) and Acid Blue 93 (AB93) using conventional (250-500 °C) and microwave heating (100-300W). The effect of the textile dye used on the regeneration performance was analyzed by determining their dielectric properties using the perturbation cavity method from 20 to 600 °C and by TG/DTG analysis. The efficacy of the regenerated carbons was investigated by their physical properties characterized by pore structural analysis using N 2 adsorption isotherms. Results showed only 3 min are required by microwaves to achieve similar textural parameters obtained by conventional heating at 190 min. The results indicate that the adsorbate plays a determining role on the regeneration efficiency as results of their interaction with the adsorbent, being easily regenerated when AB93 is the adsorbate. The adsorption capacity of microwave regenerated samples for AB93 and BB9 was 192-240 and 154-175 mg/g, respectively. Additionally, the equilibrium isotherms were simulated using the Langmuir and Freundlich isotherms models and the results suggest the textile dye removal is achieved on multilayer adsorption.

21Central Tertiary Basin (CTB) coals from a variety of palaeogeographic conditions within the 22Longyear and Verkhnij seams, were sampled to assess the relationship between the petroleum present, 23 the remaining generation potential and coal geochemistry in order to improve the spatial predictability 24 of petroleum resources within the basin. Vitrinite reflectance (VR) values from the CTB coals have been 25shown to be suppressed (Marshall et al., 2015a). This study attempts to quantify and correct for this 26 suppression effect by applying the Lo (1993) method (LoVR), which uses Hydrogen Index (HI) values 27 to modify VR data, and the coal Rank(Sr) scale of Suggate (2000Suggate ( , 2002, a technique not affected by 28suppression. In addition, the oil generation and expulsion thresholds for the CTB coals were 29 investigated. 30 J.O. Uguna et al | 2A pseudo-van Krevelen diagram shows that the majority of the coals plot on the Type II kerogen 31 line, while the remainder plot between the Types II and III kerogen lines, with HI between 151 -410 mg 32 HC/g TOC; however, maceral analysis shows that Type III kerogen predominates. This is attributed to 33 the presence of abundant fluorescing (oil-prone) vitrinites. The LoVR, Tmax and Rank(Sr) parameters all 34show that maturity increases from basin margins towards basin centre (i.e. from Bassen to Lunckefjellet, 35 to Breinosa and Colesdalen) and indicate that all the coals are within the oil generation window. The 36 marginal samples at Bassen are within the early mature stage of the oil window (i.e. ~0.7% RO); 37 meaning the threshold for oil generation in the basin could not be clearly defined. However, the 38 observed maturation trend somewhat parallels the maturation pathway of the New Zealand Coal Band 39 (NZ Coal Band) and the "envelope" of the Sykes and Snowdon (2002) NZ coal data-set; therefore, it is 40 considered that the oil generation threshold for the CTB coals is likely at Rank(Sr) ~9 -10, Tmax ~420 - Bassen samples because they have not started expelling oil. Conversely, the levels of marine influence 52show clear negative relationships with BI and HI within the Colesdalen samples because they have 53 commenced oil expulsion, and probably reached the "effective oil window". The more marine influenced 54 coals appear to have commenced petroleum generation relatively earlier, which is a plausible 55 explanation why the coals from the Lunckefjellet locality appear to be at different stages within the oil 56 Oil-Prone Coal; Perhydrous Vitrinite; Maturity; VR; LoVR; Tmax; Rank(Sr); Suppression; Generation; 62 Expulsion; Todalen Member; Spitsbergen. 63 64 Introduction 65The Central Tertiary Basin (CTB) Spitsbergen, Svalbard, contains large reserves of perhydrous 66 (oil-prone) coals, with oil potential attributed to perhydrous vitrinites formed as a consequence of peat 67 deposition under marine influence (Orheim et al., 2007; Marshall et al., 2015a, b). The greatest oil 68 potential in these coals has been hypothesised to be favoured by envir...