하수슬러지를 활용하여 제조한 흡착제의 황화수소 흡착특성

조은성,박영성 한국냄새환경학회 2009 실내환경 및 냄새 학회지 Vol.8 No.2

하수슬러지를 배합하여 제조한 흡착제를 이용하여 황화수소 흡착특성을 고찰하였다. 배합된 원료로는 하수슬 러지, 폐석회, 활성탄, 하이알루미나시멘트, NaHCO3 등이 사용되었다. 제조된 흡착제에 대한 물성분석으로 BET 표면적, 기공부피, SEM 등이 실시되었으며, 회분식 실험장치를 이용하여 평형흡착능을 측정하였다. 실험 변수로는 흡착온도(25~45 oC), 황화수소농도(2.48~31.62 mg/L), 흡착제 종류 등이 적용되었으며, 주요 흡착특성 으로 평형흡착능과 흡착속도 등을 고찰하였다. 실험결과, 하수슬러지는 소성과정을 통해 4배정도 증가된 83.3 m2/g의 비표면적을 보였으며, 하수슬러지와 폐석회 등 부산물과 활성탄을 배합하여 제조한 흡착제의 비표면적 은 265~286 m2/g을 나타냈다. 하수슬러지를 배합하여 제조한 흡착제에 대한 황화수소 흡착평형은 Langmuir 등온식과 Freundlich 등온식에 잘 부합됨을 알 수 있었다. H2S adsorption characteristics of adsorbent made by sewage sludge were investigated. The manufacturing method of adsorbent used in this experiment is to mix sewage sludge, waste lime, the high-alumina cement, NaHCO3, and activated carbon. For analyses of the manufactured adsorbent, various methods such as scanning electron microscope (SEM), measurements of BET surface area and pore volume were adopted. As operating variables, adsorption temperature (25~45 ℃), H2S concentration (2.48~31.62 mg/L) and the kinds of adsorbent were applied. As major adsorption characteristics, adsorption rate and adsorption equilibrium capacity were measured by using batch type experimental apparatus. The experimental result showed that the BET surface area of the calcinated sewage sludge was 83.3 m2/g, which indicates 4 times higher than that of non calcination and the BET surface area of adsorbent made by sewage sludge mixing with various by-products ranged over 265 to 286 m2/g. It was also found that the H2S adsorption equilibrium capacity of adsorbent made by sewage sludge decreases with increasing temperature, but increases with increasing H2S concentration. Through the evaluation of adsorption isotherm model, it was found that H2S adsorption isotherm for adsorbent made by sewage sludge can be expressed well by Langmuir and Freundlich isotherm equation.

폐콘크리트를 매립가스(LFG) 배제층으로 활용한 황화수소(H2S)의 저감 특성 연구

오화수,김형수,이재영,노연희,정우진 한국폐기물자원순환학회 2020 한국폐기물자원순환학회지 Vol.37 No.7

In this study, the feasibility of using waste concrete as a cover material to remove hydrogen sulfide (H2S) from landfillgas was evaluated. The waste concrete composed of alkaline earth metal-based compounds was applied as a H2S adsorbentowing to its high ion exchange capacity. The H2S adsorption amount and breakthrough characteristics with relation tothe temperature of the waste concrete and the flow rate of H2S were examined by applying the Adam–Bohart, Tomas,and Yoon–Nelson models. The highest adsorption amount of H2S per unit mass of waste concrete was achieved at 40oC with a flow rate of H2S of 100 mL/min. The Tomas and Yoon–Nelson models showed an R2 of 0.9601. A basic studywas conducted on the H2S adsorption by waste concrete as the cover material.

H2S adsorption performance of alkali lignocarbon/PVA composite membrane

Youjing Li,Fen Li,Menglong Zheng,Hong Yan,Qianliang Liu 한국화학공학회 2022 Korean Journal of Chemical Engineering Vol.39 No.9

In this work, lignin carbon-based membranes were prepared for H2S adsorption. Alkali lignin was carbonizedto obtain alkali lignocarbon (CLA). Using the CLA and polyvinyl alcohol (PVA) as raw materials, glycerol andwater as plasticizers, and nano-CuO and Cu2+ as dopants, CLA/PVA, CuO-CLA/PVA-1, and Cu-CLA/PVA-2 compositemembranes were prepared by solution casting method. The structures of these membranes and their H2S adsorptionproperties were then analyzed. The results show that with a membrane solution water-alcohol ratio of 3 : 1 and2 wt% CLA content, the prepared CLA/PVA membrane can adsorb H2S for 30 min. The CuO-CLA/PVA-1 and Cu-CLA/PVA-2 membranes, which were obtained after doping with nano-CuO and Cu2+, demonstrate significantlyimproved deodorization performance compared with that of CLA/PVA. The Cu-CLA/PVA-2 membrane can adsorbH2S for up to 75min and also demonstrates better mechanical properties. The H2S adsorption capacity of this membraneis up to 0.27 mol/kg. Structural analysis shows that the veneers of the three composite membranes are smoothand that doped copper is evenly distributed in the membranes as nano-CuO. The surface functional groups of theCLA/PVA, CuO-CLA/PVA-1, and Cu-CLA/PVA-2 membranes are similar and play a positive role in H2S adsorption. Nano-CuO is the main active site for H2S adsorption in the Cu-containing composite membranes.

커피찌꺼기를 활용하여 제조한 흡착제의 H2S 흡착특성

김정환(Jung Hwan Kim),강윤성(Yun Seong Kang),우제민(Jae Min Woo),박영성(Yeong Seong Park) 대전대학교 환경문제연구소 2015 환경문제연구소 논문집 Vol.19 No.-

H2S adsorption characteristics of adsorbent made by coffee waste were investigated. For analyses of the manufactured adsorbent, various methods such as scanning electron microscope(SEM), measurements of BET(Brunauer Emmett Teller) surface area, pH, and Iodide adsorption were adopted. As major adsorption characteristics, adsorption equilibrium capacity was measured by using a batch type experimental apparatus for operating variables such as adsorption temperature(25~45℃), adsorbent types. The experimental result showed that the H2S adsorption equilibrium capacity of adsorbent made by coffee waste much more increases with steam activation for the coffee waste.

Amine grafted zeolite for simultaneous CO₂ and H₂S adsorption from sour gas

류혁상,최재형,제정호,임동하 한국공업화학회 2020 한국공업화학회 연구논문 초록집 Vol.2020 No.-

The pretreatment for natural gas (NG), adsorption has been attracted as a promising means to purify NG with cost-effectivity, for instance, low costs of energy, installation and management. The purpose of this study is to the develop adsorbent for simultaneous adsorption of both CO₂ and H₂S gases, that can be used in the pretreatment system. In this study, the 13X was considered suitable for CO₂ adsorption with relatively large molecular size due to superior pore volume than the LTA type Zeolites. To improve the performance, tertiary amine was grafted on the zeolite for capturing low concentration H₂S. The adsorbent properties and abilities were assessed via TGA, BET, TPD and Lab-scale isotherm system.

낙엽부산물을 활용하여 제조한 흡착제의 H2S 흡착특성

유영국,신상준,박영성 대전대학교 환경문제연구소 2013 환경문제연구소 논문집 Vol.17 No.-

H2S adsorption characteristics of adsorbent made by fallen leaves were investigated. For analyses of the manufactured adsorbent, various methods such as scanning electron microscope(SEM) and measurements of BET surface area were adopted. As major adsorption characteristics, adsorption equilibrium capacity was measured by using a batch type experimental apparatus for operating variables such as adsorption temperature(25~45℃) and adsorbent types. The experimental result showed that the H2S adsorption equilibrium capacity of adsorbent made by fallen leaves decreased with increasing adsorption temperature due to physical adsorption phenomena. It was also found that the H2S adsorption capacity of the adsorbent increased remarkably by an acid treatment with HCl solution.

Adsorption Characteristics of H₂S on Adsorbent Made by Coffee Waste

( Jung-hwan Kim ),( Yun-seong Kang ),( Jae-min Woo ),( Yeong-seong Park ) 한국폐기물자원순환학회(구 한국폐기물학회) 2015 한국폐기물자원순환학회 춘계학술발표논문집 Vol.2015 No.-

H₂S adsorption characteristics of adsorbent made by coffee waste were investigated. The manufacturing method of adsorbent is to activate the coffee waste with steam after carbonization of dried coffee waste. For analyses of the manufactured adsorbent, various methods such as scanning electron microscope (SEM), measurements of BET(Brunauer Emmett Teller) surface area, pH, and Iodide adsorption were adopted. As major adsorption characteristics, adsorption equilibrium capacity was measured by using a batch type experimental apparatus for operating variables such as adsorption temperature (25~45℃), adsorbent types. The experimental result showed that the H₂S adsorption equilibrium capacity of adsorbent made by coffee waste much more increases with steam activation for the coffee waste.

낙엽부산물을 활용하여 제조한 흡착제의 H2S 흡착특성

유영국(Young-Kuk You),신상준(Sang-Jun Shin),박영성(Yeong-Seong Park) 대전대학교 환경문제연구소 2013 환경문제연구소 논문집 Vol.17 No.-

H2S adsorption characteristics of adsorbent made by fallen leaves were investigated. For analyses of the manufactured adsorbent, various methods such as scanning electron microscope(SEM) and measurements of BET surface area were adopted. As major adsorption characteristics, adsorption equilibrium capacity was measured by using a batch type experimental apparatus for operating variables such as adsorption temperature(25~45℃) and adsorbent types. The experimental result showed that the H2S adsorption equilibrium capacity of adsorbent made by fallen leaves decreased with increasing adsorption temperature due to physical adsorption phenomena. It was also found that the H2S adsorption capacity of the adsorbent increased remarkably by an acid treatment with HCl solution.

돈사 악취 저감을 위한 필터 흡착식 악취저감시설의 효능 평가

이승훈,김대훈,신진호,이양준,안희권 (사)한국축산환경학회 2023 한국축산시설환경학회지 Vol.25 No.1

This study evaluated the efficacy of filter adsorption-based odor control facilities, which are being used in other industries, for their applicability in livestock farms. The filter adsorption-based odor control facility installed in a pig farm was evaluated for 74 days, monitoring three points: the inlet section, outlet section, and hallway, using a real-time odor monitoring system. The study results showed that the average concentrations of NH3 in the inlet, outlet, and hallway were 10.4 ± 9.6 ppm, 7.3 ± 4.1 ppm, and 2.7 ± 3.8 ppm, respectively. The H2S concentrations in the inlet and outlet sections were 84.9.4 ± 76.1 ppb and 12.3 ± 11.9 ppb, respectively, indicating a significant reduction in concentrations after passing through the filter adsorption-based odor control facility. The H2S concentration in the hallway was measured at 13.3 ± 23.8 ppb. The removal efficiency of NH3 and H2S by the filter adsorption-based odor control facility was approximately 13.5% and 66%, respectively, showing better effectiveness in removing H2S than NH3. However, regular filter replacement and maintenance are necessary to maintain efficient odor removal and odor control efficiency in the evaluated filter adsorption-based odor control facility. The frequency of filter maintenance and replacement may vary depending on the odor levels of the specific facility. According to the research findings, it is recommended to replace the filters approximately every 40-50 days for facilities with NH3 concentrations of around 10 ppm and every 3 to 6 months for facilities with H2S concentrations around 85 ppb.

커피찌꺼기를 활용하여 제조한 흡착제의 H2S 흡착특성

김정환,강윤성,우제민,박영성 대전대학교 환경문제연구소 2015 환경문제연구소 논문집 Vol.19 No.-

H2S adsorption characteristics of adsorbent made by coffee waste were investigated. For analyses of the manufactured adsorbent, various methods such as scanning electron microscope(SEM), measurements of BET(Brunauer Emmett Teller) surface area, pH, and Iodide adsorption were adopted. As major adsorption characteristics, adsorption equilibrium capacity was measured by using a batch type experimental apparatus for operating variables such as adsorption temperature(25~45℃), adsorbent types. The experimental result showed that the H2S adsorption equilibrium capacity of adsorbent made by coffee waste much more increases with steam activation for the coffee waste.