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Calculating Soil Quality Index for Biomass Production Based on Soil Chemical Properties
김성철,홍영규,이상필,오승민,임경재,양재의 한국토양비료학회 2017 한국토양비료학회지 Vol.50 No.1
Soil quality has been regarded as an important factor for maintaining sustainability of ecosystem. Main purpose ofthis research was i) to select minimum factor for predicting biomass, and ii) to calculate soil quality index forbiomass according to soil chemical properties. Result showed that soil pH, electrical conductivity (EC), soilorganic matter (SOM), cation exchange capacity (CEC), and available phosphorus are minimum data set forcalculating biomass production in soil. Selected representative soil chemical properties were evaluated for soilquality index and rated from 1 to 5 (1 is the best for biomass production). Percentage of each grade in terms ofbiomass production in national wide was 14.52, 35.23, 33.03, 6.47, 10.75% respectively. Although, only soilchemical properties were evaluated for calculating optimum soil quality, result of this research can be useful tounderstand basic protocol of soil quality assessment in national wide.
Calculating Soil Quality Index for Biomass Production Based on Soil Chemical Properties
Sung-Chul Kim,Young Kyu Hong,Sang Phil Lee,Seung Min Oh,Kyung Jae Lim,Jae E. Yang 한국토양비료학회 2017 한국토양비료학회지 Vol.50 No.1
Soil quality has been regarded as an important factor for maintaining sustainability of ecosystem. Main purpose of this research was i) to select minimum factor for predicting biomass, and ii) to calculate soil quality index for biomass according to soil chemical properties. Result showed that soil pH, electrical conductivity (EC), soil organic matter (SOM), cation exchange capacity (CEC), and available phosphorus are minimum data set for calculating biomass production in soil. Selected representative soil chemical properties were evaluated for soil quality index and rated from 1 to 5 (1 is the best for biomass production). Percentage of each grade in terms of biomass production in national wide was 14.52, 35.23, 33.03, 6.47, 10.75% respectively. Although, only soil chemical properties were evaluated for calculating optimum soil quality, result of this research can be useful to understand basic protocol of soil quality assessment in national wide.
Calculating Soil Quality Index for Biomass Production Based on Soil Chemical Properties
Kim, Sung-Chul,Hong, Young Kyu,Lee, Sang Phil,Oh, Seung Min,Lim, Kyung Jae,Yang, Jae E. 한국토양비료학회 2017 한국토양비료학회지 Vol.50 No.1
Soil quality has been regarded as an important factor for maintaining sustainability of ecosystem. Main purpose of this research was i) to select minimum factor for predicting biomass, and ii) to calculate soil quality index for biomass according to soil chemical properties. Result showed that soil pH, electrical conductivity (EC), soil organic matter (SOM), cation exchange capacity (CEC), and available phosphorus are minimum data set for calculating biomass production in soil. Selected representative soil chemical properties were evaluated for soil quality index and rated from 1 to 5 (1 is the best for biomass production). Percentage of each grade in terms of biomass production in national wide was 14.52, 35.23, 33.03, 6.47, 10.75% respectively. Although, only soil chemical properties were evaluated for calculating optimum soil quality, result of this research can be useful to understand basic protocol of soil quality assessment in national wide.
Tran, Thang Hong,Nguyen, Hoang-Linh,Hwang, Dong Soo,Lee, Ju Young,Cha, Hyun Gil,Koo, Jun Mo,Hwang, Sung Yeon,Park, Jeyoung,Oh, Dongyeop X. Elsevier 2019 Carbohydrate polymers Vol.205 No.-
<P><B>Abstract</B></P> <P>Chitin is a renewable and sustainable biomass material that can be converted into various one-dimensional crystalline nanomaterials different in 1) length, 2) diameter, 3) charge density, 4) type of charge, and 5) crystallinity via diverse top-down synthetic methods. These nanomaterials have great potential as sustainable reinforcing and biologically functional materials. The proper design of chitin nanomaterials maximizes their performances in specific applications. Extensive efforts are devoted to understanding each type of chitin nanomaterial produced from different chitin sources; however, few studies have compared different chitin nanomaterials. Herein, we synthesize five different types of chitin nanomaterials from identical sources and compare their physical and chemical properties, including suitability for assorted purposes. Factors 1)-5) are discussed regarding their dominance in determining functionality depending on the specific goals of a) gas barriers, b) mechanical reinforcements, c) dispersibility in various pH aqueous buffers, d) thermal dimensional stability, and e) antibacterial activity. This study gives insights to design new chitin nanomaterial-based materials.</P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
Characterization of products from slow pyrolysis of palm kernel cake and cassava pulp residue
Piyarat Weerachanchai,Chaiyot Tangsathitkulchai,Malee Tangsathitkulchai 한국화학공학회 2011 Korean Journal of Chemical Engineering Vol.28 No.12
Slow pyrolysis studies of palm kernel cake (PKC) and cassava pulp residue (CPR) were conducted in a fixed-bed reactor. Maximum liquid yield (54.3 wt%) was obtained from PKC pyrolysis at 700 oC, heating rate of 20 oC/min, N2 gas flow rate of 200 cm3/min and particle size of 2.03 mm. Fuel properties of bi-oils were in following ranges:density, 1.01-1.16 g/cm3; pH, 2.8-5.6; flash point, 74-110 oC and heating value, 15MJ/kg for CPR oil and 40 MJ/kg for PKC oil. PKC oil gave main contents of n-C8-C18 carboxylic acids, phenols, and esters, whereas CPR oil gave the highest amount of methanol soluble fraction consisting of polar and non-volatile compounds. On gas compositions,CPR pyrolysis gave the highest yield of syngas produced, while PKC pyrolysis offered the highest content of CO2. Pyrolysis chars possessed high calorific values in range from 29-35MJ/kg with PKC char showing a characteristic of reasonably high porosity material.
Yuqin Liu,Yu Shi,Yongqiang Liu,Ailin Fan,Bo Xu,Haiyan Qiu,Guihong Lan,Ming Zhang 대한환경공학회 2024 Environmental Engineering Research Vol.29 No.6
The overuse of antibiotics has become a serious environmental problem, and addressing how to remove antibiotics from aquatic environments poses a significant challenge. This study prepared a porous biochar material (BSJ) using natural Jacaranda fruit shells as raw materials and combined it with an electric Fenton system (EF-BSJ) to degrade ciprofloxacin hydrochloride (CIP). Characterization and analysis of biochar using SEM, BET, Raman spectroscopy, and other methods revealed that the porous structure and aromatic functional groups of biochar play a crucial role in adsorbing CIP. The effects of carbonization temperature and carbonization time on the adsorption of CIP by biochar were investigated during the biochar preparation process. At 800℃ and 1.5 hours, the maximum adsorption efficiency of biochar for CIP is 96.88%. In addition, thestudy investigated the impact of cathode and anode materials of the EF-BSJ system on the degradation efficiency of CIP. When platinum-titnium plating was used as the anode and foam nickel electrode as the cathoded, the CIP removal rate could reach 95.48%. Finally, the UV full-band scanning method was used to determine that CIP was degraded into small molecule substances, achieving the goal of removing CIP. This study introduces a novel strategy for eliminating antibiotics.