Leaching behavior of total organic carbon, nitrogen, and phosphorus from banana peel

2015 ◽  
Vol 71 (10) ◽  
pp. 1458-1462 ◽  
Author(s):  
Ruixue Jiang ◽  
Shujuan Sun ◽  
Yan Xu ◽  
Xiudong Qiu ◽  
Jili Yang ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Total Organic Carbon ◽  
Contact Time ◽  
Ph Value ◽  
Pollution Source ◽  
Banana Peel ◽  
Leaching Behavior ◽  
Nitrogen And Phosphorus ◽  
Domestic Waste ◽  
Potential Pollution

The leaching behavior of organic carbon and nutrient compounds from banana peel (BP) was investigated in batch assays with respect to particle size, contact time, pH value, and temperature. The granularity, contact time, pH, and temperature caused no significant effects on the leaching of total phosphorus (TP) from the BP. The maximum leached total nitrogen (TN) content was found at pH 5.0 and 90 minutes, while no significant effects were caused by the granularity and temperature. The maximum leached total organic carbon (TOC) content was found by using a powder of 40 mesh, 150 minutes and at pH 6.0, while the temperature had no effect on the TOC leaching. The proportions of the TN, TP, and TOC contents leached from the dried BP ranged from 33.6% to 40.9%, 60.4% to 72.7%, and 8.2% to 9.9%, respectively, indicating that BP could be a potential pollution source for surface and ground water if discharged as domestic waste or reutilized without pretreatment.

scholarly journals Global Landscape of Total Organic Carbon, Nitrogen and Phosphorus in Lake Water

2015 ◽  
Vol 5 (1) ◽  
Author(s):  
Ming Chen ◽  
Guangming Zeng ◽  
Jiachao Zhang ◽  
Piao Xu ◽  
Anwei Chen ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Total Organic Carbon ◽  
Lake Water ◽  
Nitrogen And Phosphorus

scholarly journals Effect of Microbial Inoculation on Carbon Preservation during Goat Manure Aerobic Composting

Molecules ◽  
2021 ◽  
Vol 26 (15) ◽  
pp. 4441
Author(s):  
Jiawei Lu ◽  
Jingang Wang ◽  
Qin Gao ◽  
Dongxu Li ◽  
Zili Chen ◽  
...  
Keyword(s):  
Humic Acid ◽  
Organic Carbon ◽  
Total Organic Carbon ◽  
Ph Value ◽  
Trichoderma Viride ◽  
Aerobic Composting ◽  
Microbial Inoculation ◽  
Goat Manure ◽  
Microbial Agents ◽  
Humic Acid Carbon

Carbon is the crucial source of energy during aerobic composting. There are few studies that explore carbon preservation by inoculation with microbial agents during goat manure composting. Hence, this study inoculated three proportions of microbial agents to investigate the preservation of carbon during goat manure composting. The microbial inoculums were composed of Bacillus subtilis, Bacillus licheniformis, Trichoderma viride, Aspergillus niger, and yeast, and the proportions were B1 treatment (1:1:1:1:2), B2 treatment (2:2:1:1:2), and B3 treatment (3:3:1:1:2). The results showed that the contents of total organic carbon were enriched by 12.21%, 4.87%, and 1.90% in B1 treatment, B2 treatment, and B3 treatment, respectively. The total organic carbon contents of B1 treatment, B2 treatment, and B3 treatment were 402.00 ± 2.65, 366.33 ± 1.53, and 378.33 ± 2.08 g/kg, respectively. B1 treatment significantly increased the content of total organic carbon compared with the other two treatments (p < 0.05). Moreover, the ratio of 1:1:1:1:2 significantly reduced the moisture content, pH value, EC value, hemicellulose, and lignin contents (p < 0.05), and significantly increased the GI value and the content of humic acid carbon (p < 0.05). Consequently, the preservation of carbon might be a result not only of the enrichment of the humic acid carbon and the decomposition of hemicellulose and lignin, but also the increased OTU amount and Lactobacillus abundance. This result provided a ratio of microbial agents to preserve the carbon during goat manure aerobic composting.

scholarly journals Soil Fauna Community Diversity and Response to Wetland Degradation in Nanniwan Wetland

2021 ◽  
Vol 50 (6) ◽  
pp. 1511-1520
Author(s):  
Changhai Liu ◽  
Ying Shao ◽  
Siping Cao
Keyword(s):  
Environmental Factors ◽  
Organic Carbon ◽  
Total Organic Carbon ◽  
Soil Fauna ◽  
Ph Value ◽  
Community Diversity ◽  
Wetland Soil ◽  
Organic Carbon Content ◽  
Autumn And Winter ◽  
Nitrogen Contents

This study is to investigate the soil fauna community characteristics in the Nanniwan wetland, as well as their responses to changed environmental factors. Soil fauna from six representative habitats in the Nanniwan wetland were studied, in the spring, summer, autumn, and winter of 2016. Soil fauna community composition, density, and distribution were investigated. The relationships between soil fauna distribution and soil physicochemical properties were also analyzed. Overall, 3285 individuals were harvested, which belonged to 4 phyla, 10 classes, and 26 orders. The soil fauna density and group numbers differed among these habitats. The structure of the reclaimed wetland soil fauna community was the simplest among all these habitats. Wetland reclamation and degradation reduced the density and diversity of soil fauna, and changed the functional groups of soil fauna, resulting in decreased saprozoic soil fauna and increased predacity soil fauna. The total organic carbon content and the soil pH value represented the main influencing factors of soil fauna distribution. The soil fauna density was positively correlated with the soil total organic carbon and total nitrogen contents, while the soil fauna density was negatively correlated with the pH value. The soil fauna density is closely associated with the environmental factors in the Nanniwan wetland. These findings would help to quantitatively predict and evaluate the ecological function of soil fauna in the Nanniwan wetland.

scholarly journals The effect of Iron Ion on Removal Efficiency of Dissolved Organic Carbon (DOC) Using UV/TiO2

2016 ◽  
Vol 18 (2) ◽  
pp. 392-401 ◽  
Keyword(s):  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Removal Efficiency ◽  
Ferric Chloride ◽  
Contact Time ◽  
Ph Value ◽  
Pearson Correlation ◽  
Complex Mixture ◽  
Iron Ion ◽  
Quasi Experimental

<div> <p>Most of water sources throughout the world contain natural organic matter (NOM), which is the best description as a complex mixture of organic compounds. The effect of iron ion on removal efficiency of dissolved organic carbon (DOC) using UV/TiO<sub>2</sub> photo catalytic oxidation (TiO<sub>2</sub>) was examined. In this quasi-experimental study, the different variables such as pH value, contact time, various concentrations of TiO<sub>2</sub>, FeCl<sub>2</sub> on the removal efficiency of DOC by the UV/TiO<sub>2</sub> on raw water of Zayandehroud in Isfahan were studied. The results were analyzed by using Pearson correlation coefficient test and SPSS software. Removal efficiency DOC improved as the amount of catalyst was increased. Maximum removal efficiency was achieved during acidic conditions (pH=3) within 60 minutes of contact time. The removal efficiency of DOC by the UV/TiO<sub>2</sub> decreased with increase of contact time. The presence of iron ions increased the rate of DOC removal by the UV/TiO<sub>2</sub>. Removal efficiency of dissolved organic carbon increased when ionic strength and initial concentration of Ferric Chloride was increased. Also, by adding particles of Ferric Chloride, Removal of dissolved organic carbon increased to 98% in comparison with absence of iron ion (78%).</p> </div> <p>&nbsp;</p>

scholarly journals Oxidation of salicylic acid in water by the O3 and UV/O3 processes: removal and reaction byproducts

2020 ◽  
Vol 81 (4) ◽  
pp. 753-762
Author(s):  
Chang Jing ◽  
Wang Shaopo ◽  
Zhang Yaxue ◽  
Wang Yibo ◽  
Zhang Wenjuan ◽  
...  
Keyword(s):  
Salicylic Acid ◽  
Organic Carbon ◽  
Oxalic Acid ◽  
Dissolved Organic Carbon ◽  
Total Organic Carbon ◽  
Glycolic Acid ◽  
Ph Value ◽  
Glyoxylic Acid ◽  
Carbon Reduction ◽  
Optimum Ph

Abstract In this study, the removal of salicylic acid (SA) in water by ozone (O3) and ultraviolet/ozone (UV/O3) processes was investigated. Results showed that more than 50% of SA (10 mg/L) could be effectively removed after 1 min during these two processes. However, the UV/O3 process was much more effective than the O3 process for SA mineralization, and the total organic carbon reduction after 30 min was 69.5% and 28.1%, respectively. In the two processes, the optimum pH value for SA removal was 4.3, while that for SA mineralization was 10.0. Both bicarbonate and dissolved organic carbon significantly inhibited SA removal during the two processes. Eleven oxidation byproducts were detected in O3 process, but only four byproducts were observed in UV/O3 process. Three hydroxylation aromatic products were identified as the initial byproducts during SA degradation. Glyoxylic acid monohydrate, glycolic acid, and oxalic acid were accumulated in O3 process but not observed in UV/O3 process. Oxalic acid was the only detected small molecular byproduct in UV/O3 process, and it could be further mineralized, thereby indicating that UV/O3 had a greater potential for degrading both SA and its reaction byproducts.

Study on Removal of Trivalent Chromium from Wastewater by Banana Peel

2014 ◽  
Vol 1048 ◽  
pp. 444-447
Author(s):  
Xiao Dong Li
Keyword(s):  
Waste Water ◽  
Contact Time ◽  
Mass Concentration ◽  
Ph Value ◽  
Physical Adsorption ◽  
Trivalent Chromium ◽  
Industrial Processes ◽  
Banana Peel ◽  
Endothermic Process ◽  
Living Species

The toxic metals released into the aquatic environment though various industrial processes are detrimental to all living species. This paper used banana peels as an adsorbent for studying heavy metal Cr(III) containing in waste water. Respectively, the effects of the adsorption dosage, temperature, contact time, pH, initial Cr(III) ions concentration and shock time on adsorption were investigated. The results showed that under the following condition: the dosage was 0.1 g, the pH value of the wastewater was 2, the temperature is 30 °C, the shock time was 2 h, the initial mass concentration of Cr(III) was about 30 mg/L, the adsorbing capacity can be 22 mg/g. The adsorption reaction is an endothermic process and mainly physical adsorption. Using banana peels to treat chromium-contained wastewater has a very good application prospect.

CHARACTERISATION OF DISSOLVED ORGANIC CARBON (DOC) LEACHED FROM LEAVES IN WATER

2008 ◽  
Vol 6 (1) ◽  
Author(s):  
Markus Heryanto Langsa
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Total Organic Carbon ◽  
Gas Chromatography Mass Spectrometry ◽  
Pyrolysis Gas ◽  
Pyrolysis Gas Chromatography ◽  
Chromatography Mass Spectrometry ◽  
Pinus Radiate

<p>Penelitian ini bertujuan untuk menentukan senyawa organik khususnya organic karbon terlarut (DOC) dari dua spesies daun tumbuhan (<em>wandoo eucalyptus </em>and <em>pinus radiate, conifer</em>) yang larut dalam air selama periode 5 bulan leaching eksperimen. Kecepatan melarutnya senyawa organic ditentukan secara kuantitatif dan kualitatif menggunakan kombinasi dari beberapa teknik diantaranya Total Organic Carbon (TOC) analyser, Ultraviolet-Visible (UV-VIS) spektrokopi dan pyrolysis-gas chromatography-mass spectrometry (Py-GC-MS).</p><p>Hasil analisis DOC dan UV menunjukkan peningkatan yang tajam dari kelarutan senyawa organic di awal periode pengamatan yang selanjutnya berkurang seiring dengan waktu secara eksponensial. Jumlah relatif senyawa organic yang terlarut tergantung pada luas permukaan, aktifitas mikrobiologi dan jenis sampel tumbuhan (segar atau kering) yang digunakan. Fluktuasi profil DOC dan UV<sub>254</sub> disebabkan oleh aktifitas mikrobiologi. Diperoleh bahwa daun kering lebih mudah terdegradasi menghasilkan senyawa organic dalam air dibandingkan dengan daun segar. Hasil pyrolysis secara umum menunjukkan bahwa senyawa hidrokarbon aromatic dan fenol (dan turunannya) lebih banyak ditemukan pada residue sampel setelah proses leaching kemungkinan karena adanya senyawa lignin atau aktifitas humifikasi mikrobiologi membuktikan bahwa senyawa-senyawa tersebut merupakan komponen penting dalam proses karakterisasi DOC.</p>

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