scholarly journals Evaluasi Efektivitas Metode dan Media Filtrasi pada Pengolahan Air Limbah Tahu

2021 ◽  
Vol 19 (3) ◽  
pp. 565-575
Author(s):  
Anisa Nur Sitasari ◽  
Adian Khoironi
Keyword(s):  
Residence Time ◽  
Industrial Waste ◽  
Negative Impact ◽  
Organic Matter Content ◽  
Matter Content ◽  
Continuous Method ◽  
Aquatic Systems ◽  
Batch Method ◽  
Do Concentration

Peningkatan jumlah industri tahu di Indonesia diiringi dengan meningkatnya jumlah limbah industri tahu yang perlu mendapat perhatian khusus. Limbah tahu dengan kandungan bahan organik tinggi memberikan dampak negatif bagi sistem perairan jika dibuang tanpa adanya pengolahan. Penelitian ini dilakukan dengan tujuan untuk mempelajari metode yang efektif dalam mengolah limbah tahu dengan variasi media filtrasi. Penelitian ini dilakukan dengan menggunakan 2 metode yang diperlakukan pada 2 kolom filtrasi dengan media filtrasi yang berbeda. Susunan media utama pada kolom filtrasi 1 berupa bioball dan kolom filtrasi 2 berupa bioring. Metode  batch dan kontinyu diperlakukan pada dua jenis kolom filtrasi tersebut. Ketinggian total media filtrasi untuk setiap kolom adalah 20 cm dengan volume air limbah 5 liter. Hasil penelitian menunjukkan adanya peningkatan kualitas air limbah tahu pada sampel hari ke 1 dengan terjadinya penurunan konsentrasi COD pada kolom 1 dengan perlakuan metode batch sebanyak 18,12%. Peningkatan konsentrasi DO paling optimal pada kolom 1 dengan perlakuan metode kontinyu sebanyak 18,03%. Selanjutnya konsentrasi pH terjadi peningkatan secara signifikan pada kolom 2 dengan perlakuan metode batch sebanyak 41,27%. Sedangkan penurunan konsentrasi kekeruhan diperoleh pada kolom 1 dengan perlakuan metode batch sebanyak 57,22%. Perlakuan limbah tahu dengan metode batch pada waktu tinggal 1 hari memberikan peningkatan kualitas air limbah tahu yang lebih baik meskipun pada waktu tinggal yang lebih lama terjadi penurunan kualitas akibat terjadinya proses dekomposisi yang tidak terkontrol. Lebih lanjut, perlu dilakukan penelitian dengan melibatkan mikroorganisme selektif pada penyaring lambat dengan metode batch agar dihasilkan penurunan konsentrasi COD yang lebih signifikan. ABSTRACTThe increase in the number of tofu industries in Indonesia is accompanied by an increase in the amount of tofu industrial waste that needs special attention. Tofu waste with high organic matter content has a negative impact on aquatic systems if it is disposed of without treatment. The aim of this research was to study the effective method of treating tofu waste with a variety of filtration media. This research was conducted using 2 methods which were treated on 2 filtration columns with different filtration media. The composition of the main media in first filtration column is bioball and second filtration column is bioring. Batch and continuous methods are applied to the two types of filtration columns. The total height of the filtration media for each column is 20 cm with a volume of 5 liters of wastewater. The results showed an increase in the quality of tofu wastewater on the first day of the sample with a decrease in COD concentration in first column with the batch method treatment of 18.12%. The most optimal increase in DO concentration in first column with continuous method treatment was 18.03%. Furthermore, the pH concentration increased significantly in second column with the batch method treatment as much as 41.27%. While the decrease in turbidity concentration was obtained in column 1 with batch method treatment as much as 57.22%. The treatment of tofu waste using the batch method at a residence time of 1 day provides a better-quality improvement of tofu wastewater although at a longer residence time there is a decrease in quality due to an uncontrolled decomposition process. Furthermore, it is necessary to conduct research involving selective microorganisms in a slow filter with a batch method in order to produce a more significant reduction in COD concentration.

scholarly journals Kajian Mutu dan Palatibilitas Silase dan Hay Ransum Komplit Berbasis Sampah Organik Primer pada Kambing Peranakan Etawah

2008 ◽  
Vol 8 (1) ◽  
pp. 31-38 ◽  
Author(s):  
Yusmadi Yusmadi ◽  
Nahrowi Nahrowi ◽  
Muhammad Ridla
Keyword(s):  
Organic Matter ◽  
Dry Matter ◽  
Organic Matter Content ◽  
Matter Content ◽  
Physical Chemical ◽  
Microbial Characteristics ◽  
Dietary Treatments ◽  
Better Than ◽  
Measuring Ph

The quality and palatibility of silage and hay complete ration based on organic primer garbage in peranakan etawah (PE) poadABSTRACT. This research was conducted to study the quality and palatability of silage and hay complete ration based on organic primer garbage in nine heads of Peranakan Etawah (PE) Goat. The quality of silage and hay was evaluated By measuring pH, total number of lactic acid Bacteria (LAB), palatability, dry matter (DM) and organic matter (OM) aroma and color of silage. Nine heads of peranakan etawah were grouped based on their lactation periode and randomly assigned to one of tree dietary treatments. The treatments were (1) Control rations; (2) silage complete ration (SRK); and (3) Hay complete ration (HRK). The results indicated that the silage had PH 4.15 and total number of LAB was 2.4 x 10 cfu/g of silage. Dry matter and organic matter digestibility of SRK were better than those of HRK. The palatability of SRK was higher than HRK but less than control. Storage of SRK for did not change dry matter and organic matter content. Organoleptic analysis indicated that texture and color of HRK were changed at after storage, while SRK was still constant. It is concluded that silage composed of organic primer garbage has high quality in terms of physical, chemical and microbial characteristics, prolong storage.

scholarly journals Microbiological quality of silage made from by-products of cassava starch extraction and viticulture

2021 ◽  
Vol 51 (3) ◽  
pp. 407-415
Author(s):  
C.R. Schneider ◽  
M.A. Zambom ◽  
D. Galhardo ◽  
A. Faccenda ◽  
A.S. Avila ◽  
...  
Keyword(s):  
Dry Matter ◽  
Organic Matter Content ◽  
Microbiological Quality ◽  
Ammonia Nitrogen ◽  
Matter Content ◽  
Soluble Carbohydrates ◽  
Dry Matter Content ◽  
Storage Times ◽  
By Products

This study evaluated silages made with varying proportions of viticulture by-products (VC) and starch extraction from cassava (CSE). It attempted to determine the effects of these proportions on the microbial population, fermentative losses, and chemical composition. The treatments were specified as the proportions of VC in the silage (0 g/kg, 250 g/kg, 500 g/kg, 750 g/kg, and 1000 g/kg). Silages were  evaluated before (0) and after 1, 3, 7, 15, 30, and 60 days of ensiling. The experimental design was completely randomized with five  treatments, six storage times and four replications. The increased level of VC in the silage enhanced its dry matter content, ammonia  nitrogen (NH3-N), and buffering capacity, and reduced organic matter content. Fifteen days after ensiling, additional VC increased the concentration of soluble carbohydrates. The increased level of VC decreased the count of Clostridium spp. and lactic acid bacteria (LAB). The incidence of yeasts and enterobacteria was low in all treatments at all time points. Over time, losses as effluent and gases increased. Use of increasing proportions from VC in silage made with CSE increased the contents of dry matter and soluble carbohydrates and  reduced the fermentative losses of the silage. The increased amount of VC also favoured pH reduction and reduced the proliferation of undesirable yeasts, while increasing the population of LAB.

scholarly journals The influence of natural mineral water on the structural and functional changes in the rat kidneys under urolithiasis modelling

2020 ◽  
pp. 477-480
Author(s):  
Mykola KUCHERENKO ◽  
Boris NASIBULLIN ◽  
Elena BOBRO ◽  
Nataliia BADIUK ◽  
Victoria GLUSHCHENKO ◽  
...  
Keyword(s):  
Mineral Water ◽  
Organic Matter Content ◽  
Stone Disease ◽  
Matter Content ◽  
Functional Changes ◽  
Metabolic Characteristics ◽  
Complete Restoration ◽  
Positive Effect ◽  
Keywords Urolithiasis

In the experiment on the white Wistar rats, the authors evaluated kidneys changes in urolithiasis modelling (Kidney stone disease, KSD) and the possibility of correcting these changes by internal use of the mineral water (MW) with high organic matter content. The results of the studies revealed structural pathological changes in the kidneys in the form of changes of the part of glomeruli capillaries and gross changes in the kidneys tubules and interstitial layers. At the same time, the functional kidneys activity is manifested in the form of increased urination and a significant increase in urination. Urine metabolic characteristics are also change. The use of MW leads to an improvement in the capillaries of the renal corpuscles structure and almost complete restoration of the tubules structure. The functional activity of the kidneys and the quality of urine have significantly improving. The authors believe that the organic compounds of MW, which mainly determine its biological activity, contribute to the improvement of the regulation of metabolic processes and, accordingly, have a positive effect on the structural and functional parameters of the kidneys.. Keywords: urolithiasis, structural and functional characteristics of the kidneys, mineral water,

scholarly journals Torrefaction of Food Waste as a Potential Biomass Energy Source

2019 ◽  
Vol 19 (4) ◽  
pp. 993
Author(s):  
Rahsya Nur Udzaifa Abdul Rahman ◽  
Mazni Ismail ◽  
Ruwaida Abdul Rasid ◽  
Noor Ida Amalina Ahamad Nordin
Keyword(s):  
Energy Source ◽  
Residence Time ◽  
Food Waste ◽  
Negative Impact ◽  
Chemical Properties ◽  
Biomass Energy ◽  
Energy Yield ◽  
Energy Potential ◽  
Ultimate Analysis

Food waste (FW) represents a major component of municipal solid waste (MSW) in Malaysia which causes negative impact due to poor waste management. One of a promising strategy to reduce the FW is to convert the FW to energy sources through thermal pre-treatment process which known as torrefaction. The aim of this study is to investigate the improvement of chemical properties and energy potential of the torrefied FW. The torrefaction of FW was conducted using tubular reactor to evaluate the influence of temperature (220 to 260°C) and residence time (15 to 60 min) on the quality of torrefied FW. The quality of torrefied FW were evaluated using ultimate analysis, proximate analysis, mass yield, energy yield and higher heating value (HHV). From ultimate analysis, the carbon, C was increased, however the hydrogen, H and oxygen, O decreased across the torrefaction temperature and residence time. This lead to the increasing of HHV with the increasing of temperature and time. The HHV of the dried FW was improved from 19.15 to 23.9 MJ/kg after being torrefied at 260°C for 60 min. The HHV indicated that FW has the potential to be utilized as an energy source.

scholarly journals Influences of riverbed siltation on redox zonation during bank filtration: a case study of Liao River, Northeast China

2020 ◽  
Vol 51 (6) ◽  
pp. 1478-1489
Author(s):  
Jiamei Wang ◽  
Yumeng Yan ◽  
Jing Bai ◽  
Xiaosi Su
Keyword(s):  
Pore Water ◽  
Redox Reactions ◽  
Organic Matter Content ◽  
Matter Content ◽  
Water Infiltration ◽  
Hydrodynamic Conditions ◽  
Floating Platform ◽  
Riverbed Sediment ◽  
A Site

Abstract The upper part of riverbed sediment is one of the key interfaces between surface water and groundwater, and biogeochemical process in this interface has a profound influence on the chemistry of infiltrated water. The lithology and permeability of bed sediment is mainly controlled by variation in river hydrodynamic conditions. However, there have been few studies of the effect of riverbed siltation on the hydrochemistry and redox reactions of infiltrated water due to the high variability in these processes and challenges associated with sampling. This study selected and examined a river channel near a site of riverbank filtration by drilling on the floating platform and conducting microelectrode testing and high-resolution sampling. The hydrodynamic and chemical characteristics of pore water in and lithologic characteristics of riverbed sediment, the siltation, and redox zone were examined and compared. Differences in hydrodynamic conditions changed the lithology of riverbed sediment, consequently affecting redox reactions during the process of river water infiltration. Variations in siltation changed the residence time of pore water and organic matter content, which ultimately resulted in differences in extension range and intensity of redox reactions. This study provides a valuable reference for understanding the effect of riverbed siltation on water quality of riverbank infiltration.

scholarly journals Contribution of Plant Litter in Fragments of Dry Tropical Forest in Paraíba

2018 ◽  
Vol 10 (12) ◽  
pp. 437 ◽  
Author(s):  
Adão Batista de Araújo ◽  
Patrícia Carneiro Souto ◽  
Jacob Silva Souto ◽  
Fabio Junho Alves da Silva ◽  
Francisco de Assis Pereira Leonardo ◽  
...  
Keyword(s):  
Climatic Variability ◽  
Organic Matter Content ◽  
Plant Litter ◽  
Matter Content ◽  
Litter Production ◽  
Rainy Period ◽  
Caatinga Vegetation ◽  
Reproductive Material ◽  
Metal Frame

Deposition of plant litter in the environment represents the entrance into the system, with reflection on soil organic matter content and environmental quality of the site. The objective of this study was to estimate the deposition, accumulation and decomposition of plant litter in preserved Caatinga vegetation, and the interference of climatic variability in the dynamics of these events. This research was developed in the Private Natural Heritage Reserve (RPPN), Tamanduá Farm, in the municipality of Santa Terezinha-PB, in a Caatinga area. Plant litter deposited in 20 twenty 1.0 m² litterfall traps of 1.0 m × 1.0 m was collected monthly (June/2014 to July/2015), covering the dry and rainy period of the region. The material was separated into leaves, branches + bark, reproductive material and miscellaneous material. Litter stock accumulated on the forest floor was quantified using a 0.5 m × 0.5 m metal frame to estimate decomposition rate of litter. We found that that leaves fraction obtained the highest deposition average in July 2014 with 395.80 kg ha-1 and the lowest in February/2015 with 9.5 kg ha-1. We concluded that that litter production obtained during the evaluation period was 2.2 mg ha-1, being the highest contribution of litter at the end of the rainy season of the region.

scholarly journals Water residence time in the Włocławek dam reservoir (the Vistula river, Poland) affects its macrozoobenthos structure

2018 ◽  
Vol 54 ◽  
pp. 24
Author(s):  
Daria Mimier ◽  
Elżbieta Żbikowska ◽  
Janusz Żbikowski
Keyword(s):  
Organic Matter ◽  
Residence Time ◽  
Organic Matter Content ◽  
Matter Content ◽  
Bottom Fauna ◽  
Water Residence Time ◽  
Dam Reservoir ◽  
Vistula River ◽  
Chironomidae Larvae ◽  
Potamothrix Hammoniensis

The aim of our study was to compare the macrozoobenthos structure as well as water and organic matter content of the bottom sediments of two hydrologically different zones of a strongly fluvial the Włocławek Dam Reservoir. Samples were collected from the Włocławek Dam Resevoir at six sites. Three of them were located in the upper, rheolimnic part (URP) of the reservoir and three others in its lower, limnetic part (LLP). Water transparency, sediment water content and organic matter content in the sediments were higher in the LLP. The higher number of taxa and diversity of macrozoobenthos were found in the URP of the reservoir. The density of bottom fauna was slightly higher in the LLP (90,990 ind. m−2) than in the UPR (73,486 ind.  m−2), while the significantly higher biomass of macrozoobenthos was found in the URP of the reservoir (2314 g · m−2) than in the LLP (336 g · m−2). The dominant taxa of Oligochaeta and Chironomidae larvae did not show significant differences in the density between both zones. Some taxa were found only in the URP. In this zone, significantly higher densities of other taxa were observed. The only species with greater abundance in the LLP was Potamothrix hammoniensis (Oligochaeta). Due to the very short water residence time, the differences in the parameters under study between the URP and the LLP of the reservoir were smaller as well as the abundance of the macrozoobenthos was distinctly higher than in other reservoirs.

scholarly journals Organic matter content and quality in supraglacial debris across the ablation zone of the Greenland ice sheet

2010 ◽  
Vol 51 (56) ◽  
pp. 1-8 ◽  
Author(s):  
Marek Stibal ◽  
Emily C. Lawson ◽  
Grzegorz P. Lis ◽  
Ka Man Mak ◽  
Jemma L. Wadham ◽  
...  
Keyword(s):  
Organic Matter Content ◽  
Ice Sheet ◽  
Greenland Ice Sheet ◽  
Dry Weight ◽  
Matter Content ◽  
Microbial Abundance ◽  
Physical Processes ◽  
Important Indicator ◽  
Microbial Productivity

AbstractQuantifying the biogeochemical cycling of carbon in glacial ecosystems is of great significance for regional, and potentially global, carbon flow estimations. The concentration and quality of organic carbon (OC) is an important indicator of biogeochemical and physical processes that prevail in an ice-sheet ecosystem. Here we determine the content and quality of OC in debris from the surface of the Greenland ice sheet (GrIS) using microscopic, chromatographic, spectrophotometric and high-temperature combustion techniques. The total OC content in the debris increased with distance from the edge of the ice sheet, from virtually zero to >6% dry weight at 50 km inland, and there was a peak in the carbohydrate proportion and the microbial abundance at ∼6km inland. The highest (galactose + mannose)/(arabinose + xylose) ratios, indicating maximum autochthonous microbial production, were found at >10km inland. We propose that three key processes influence the carbon cycling on the GrIS: aeolian input of microbial inoculum and nutrients, in situ biological C transformation and the wash-away of supraglacial debris by meltwaters. We show that all these processes have significant spatial variability. While the total OC content of the debris on the ice sheet is probably controlled by the physical processes of wind transport and wash-away by meltwater, the microbial abundance and the quantity of the labile cell-contained OC within the debris is likely to be driven by the balance between the wash-away and the microbial productivity.

scholarly journals The influence of grain growing on the nitrogen and organic matter content of the western prairie soils of Canada

1925 ◽  
Vol 15 (2) ◽  
pp. 162-177 ◽  
Author(s):  
Frank T. Shutt
Keyword(s):  
Organic Matter ◽  
Organic Matter Content ◽  
Great Depth ◽  
Matter Content ◽  
High Fertility ◽  
American Continent ◽  
Prairie Soils ◽  
Agricultural Areas

Canada's western prairies, lying within the confines of the provinces of Manitoba, Saskatchewan and Alberta, are generally recognised as comprising one of the largest and most important agricultural areas on the American continent. The immense acreage of their arable lands, the great depth and high fertility of their soils and the unexcelled quality of their wheat, have made them widely and favourably known throughout the civilised world. As yet but sparsely settled they will for many years offer a large and attractive field for agricultural occupation and development.

Impact of Different Organic Fertilizers on Soil Humus, Microbiomass and Quality of Cabbage

2014 ◽  
Vol 955-959 ◽  
pp. 628-632 ◽  
Author(s):  
Ji Jin Li ◽  
Chuan Zhang Li ◽  
Li Juan Gao ◽  
Ben Sheng Liu ◽  
Dong Sheng Liu ◽  
...  
Keyword(s):  
Organic Matter Content ◽  
Matter Content ◽  
Organic Fertilizers ◽  
Chicken Manure ◽  
Nitrate Content ◽  
Nitrate Accumulation ◽  
Soil Humus ◽  
Combined Application ◽  
High Level

A field experiment was conducted to determine effects of 6 treatments including without fertilization (CK), conventional fertilization (CM), corn straw plus manure (SM), peat plus chicken manure ( PM), mushroom residue plus chicken manure (MM) and high level of chicken manure (HM) on different soil active organic carbon and carbon pool management index. The results showed that fertilization of chicken manure is difficult to prompt activation of soil that contains plenty of fulvic acid, but combined application of different organic fertilizers not only can significantly increase the soil organic matter content, also can balance the proportion between the components of soil humus, improve Hu/Fu. Compared to CK treatment after fertilization, there was a narrow range in HA/TOC, FA/TOC, HM/TOC of HM treatment that was only 4%-8%, but variations of 12%-25% was produced by SM, PM, MM treatment, and its Hu/Fu increased 98% - 292% compared with HM treatment; The quantity of soil microorganisms is enhanced mostly by the treatment of HM, and the increase of bacteria and fungi was the maximum, but the quantity of actinomycetes was increased mostly by MM treatment; high level of chicken manure treatment can increase the risk of nitrate accumulation, but combined application of different organic fertilizers can significantly reduce the nitrate accumulation of vegetables, improving the quality of vegetables. Compared with HM treatment, MM treatment reduces the nitrate content of 45%. Therefore, the results demonstrated that paid attention to the selection of organic fertilizers and its combined application not only would achieve better fertilizing effect, also would better improve the quality of vegetables in organic agricultural production.

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