In this study, waste corrugated paper was used as carbon precursor with KOH-NaOH mixture (mole ratio was 51:49 and the melting point is 170 °C) as activator to prepare porous carbon at different reaction temperature and different mass ratio of KOH-NaOH mixture/waste corrugate paper fiber. The micro-morphology, pore structure information and composition of porous carbon were analyzed, and the formation mechanism of pores was investigated. The effect of activator amount and pyrolysis temperature on the morphology and structure of porous carbon were studied. The adsorption capacity of porous carbon was evaluated with the methylene blue as model pollutant. The effect of adsorbent amount, adsorption time and temperature on the adsorption performance of the porous carbon were analyzed. The maximum specific surface area is 1493.30 m2 ·g−1 and the maximum adsorption capacity of methylene blue is 518 mg·g−1. This study provides a new idea for efficient conversion and utilization of waste paper.

This study is to find out if it can be recycled for making better concrete. Therefore, waste paper as of newspaper and newspaper are added into concrete to see if waste paper-mixing concrete can have any particular characteristic. The test result of paper concrete was compared and analyzed through four kinds of tests such as compressive strength as of a fundamental one of concrete resistant capacity against heat. 200℃, 400℃ and 600℃ heated concrete were compressively tested in order to find out concrete strength resistant to high temperature. heat capacity was also tested, based on the expectancy of its low conductivity. finally flexural strength test using four reinforced concrete beams with size of 20cm×30cm×160cm was made. And concrete property exposed to the temperature showed that there are almost not effect for the strength up to 400℃, but it was decreased down to 50% of the original condition. volume of paper mixed with concrete without relation to paper kinds of new and waste one.

The paper industry requires continuous automation of processes ranging from injection of raw materials to initial paper processes and final processing. Thus, it is a capital- and equipment-intensive industry that requires large investments in facilities and consumes significant amounts of energy for production. Since the concept of a 'Waste Minimization and Sustainable Resource Circulation Society' is key waste management policy, the effective use of waste has been emphasized. To this end, there is significant research on energy conversion in waste incineration plants. Domestically, there is a desire to review and improve sustainable technology development systems in order to maximize thermal energy recovery in waste incineration plants. Therefore, this study compared the energy recovery rate calculation methods currently used in eight paper industry incineration plants. The lower heating value and energy recovery & use rate calculation methods were applied in accordance with the “waste resource energy recovery & use calculation method” located in Paragraph 2 of Article 3 in the Enforcement Decree of the “Wastes Control Act” of 2015. Calculations made using the current method (on the basis of output) showed an average energy recovery rate of 78.6% (75.5 ~ 82.8%), whereas the waste resource energy recovery & use rate calculation method (based on volume used) produced an energy recovery rate of 53.3% (42.5 ~ 74.8%).

With a growing concern of greenhouse gas (GHG) emissions due to climate change, many activities and efforts onthe greenhouse gas reduction have been implemented in solid waste sectors. Since recycling is the major managementoption for solid waste in Korea, it is important to estimate the reduction of the greenhouse gas emission during recyclingprocesses. In this study, two common methodologies, Prognos method of EU and waste reduction model (WARM) methodof USA, have been critically reviewed and compared to estimate the reduction for recycling of waste paper in terms ofsystem boundary, recycling processes, and emission factors. As a common point of two methodologies, the reductionfactors for the paper recycling have been developed by subtracting the recycled product emissions from the virgin productemissions to get the greenhouse gas savings. While the recycling losses and transportation are considered in twomethodology development, there are a number of differences between the methodologies in system boundary,transportation distance and forest carbon sequestration. As a result, it caused the difference in final greenhouse gasreduction factor of paper recycling. The reduction factor was −820kgCO2eq/ton in Prognos method, while −3,891kgCO2eq/ton was found in the WARM method. When both methods were applied to recycling of waste paper in Korea,the greenhouse gas reductions by the Prognos method and the WARM method were found to be 3,485.2tCO2eq/day and2,248.8tCO2eq/day, respectively. When the carbon sequestration by forest is considered in the WARM method, thereduction rate was estimated to be 16,538.3tCO2eq/day. The main reasons for such difference can be attributed to systemboundary and forest carbon sequestration. Especially, forest carbon sequestration can be an important factor in Korea thatusually manufactures papers from imported pulp from abroad. This study implies that the applications and results of bothmethods to estimate greenhouse gas reduction by waste recycling should carefully reviewed and acknowledged beforeuse due to the different assumptions and results that are anticipated.

This paper attempted to elucidate pyrolysis reaction characteristics of waste paper laminated phenolic-printed circuit board (p-PCB). Thermogravimetric analysis was performed for the pyrolysis kinetic analysis of waste p-PCB and Pyrolyzer-gas chromatography/mass spectrometry (Py-GC/MS) was also employed to analyze the product distribution of waste p-PCB pyrolysis reaction under isothermal condition (230, 350, 600oC). Kinetic analysis and isothermal Py-GC/MS results showed that the pyrolysis reaction of waste p-PCB has three reaction temperature regions: 1) low temperature decomposition region (< 280oC), 2) medium temperature decomposition region (280 ~ 380oC), 3) high temperature decomposition region (> 380oC). At the first region, triphenyl phosphate used as fire retardant, water, and phenol were vaporized. At the second region, phenolic resin, tetrabromobisphenol-A (TBBA), and laminated paper are decomposed and produce phenols, brominated compounds, and levoglucosan which were the specific pyrolysis reaction products of phenolic resin, TBBA, and laminated paper, respectively. In the final region, cresol and alkyl benzene were detected which can be considered as the decomposition products of phenolic resin. By above results, pyrolysis reaction pathway of waste p-PCB is accounted for a series reaction with four independent reactions of phosphate based frame retardant, TBBA, laminated paper, and phenolic resin.

Photogrammetry technique was applied to estimate the amount of recyclable waste paper from an apartment complex. Photos were taken to calculate pile volume of waste paper, and at the same time the weight of separated recyclable waste paper was measured. Volume of waste paper was calculated by PhotoModeler 2012, which is commercial photogrammetry software. At least three photos were required to calculate the volume of waste paper pile. After 4 times of field measurement and volume calculation, we obtained standard density of recyclable waste paper pile. The weight of waste paper pile was estimated by multiplying the density of waste paper pile by the estimated volume of waste paper pile. As results, the density of recyclable waste paper pile from an apartment complex was 32.6 kg/m3 (standard deviation was 10.1 kg/m3), and 70.2% of man·hour was saved by using photogrammetry technique. The amount of average recyclable waste paper generation from apartment complex was 91.8 g/capita/day, and the standard deviation was 12.4 g/capita/day.

The objectives of this study were to investigate the desulfurization kinetics of paper sludge and limestone in a fluidized bed reactor according to bed temperature and air velocity. The experimental results were presented as follows ; First, the bed temperature had a great influence on the desulfurization efficiency of limestone and paper sludge. In paper sludge, the optimum condition in desulfurization temperature was at 800℃ and in limestone, that was at 850℃ or 900℃. Second, as air velocity increased, the desulfurization efficiency(or the absorbed amount of sulfur dioxide) by limestone and paper sludge decreased. And the absorbed amount of sulfur dioxide by paper sludge was larger than that of by limestone. Third, as the velocity increased and the optimum desulfurization temperature became, ks and the removal efficiency increased. So, ks, kd highly depended on the air velocity and bed temperature.

Waste paper cup was sulfonated to be used as ion exchanger. Removal characteristic of copper and lead ion by prepared ion exchanger was investigated. The sulfonation was conformed by the high intensity band of SO3H group around 1100～1160cm-1. The synthesized ion exchanger had greater removal ability for copper and lead ion than the original waste paper cup. Ion exchange system reached the final equilibrium plateau within 30min. The maximum removal capacities (qmax) were calculated as 9.79mg/g for copper and 15.95mg/g for lead, respectively. The affinity of lead based on a weight was higher than that of copper. The ion exchange phenomena appeared to follow a typical Freundlich isotherm.