scholarly journals Organic pollutant degradation of tapioca flour industrial waste with photo-fenton reaction

2018 ◽  
Vol 156 ◽  
pp. 03048 ◽  
Author(s):  
Alin Elita Esther Sarajar ◽  
Refa Putri Ramadhania ◽  
Purwanto Purwanto
Keyword(s):  
Waste Water ◽  
Light Intensity ◽  
Organic Pollutants ◽  
Industrial Waste ◽  
Uv Light ◽  
Research Result ◽  
Operating Conditions ◽  
Raw Material ◽  
Alternative Methods ◽  
Tapioca Flour

Cassava (Manihot utilissima) is the main raw material of tapioca flour industry. The tapioca industry waste water still contains high enough BOD, COD, and cyanide, above the quality standard of industrial waste water. Photo-Fenton is one of the most effective alternative methods of degrading organic pollutants. This study aims to determine the effect of Photo-Fenton method on the degradation of organic pollutants such as COD and cyanide. For operating conditions of this study use the addition of concentrations of H2O2 and FeSO4.7H2O and different UV light intensity. The analysis of COD concentration using SNI method is spectrophotometric. From the research result, it is found that the concentration of COD and cyanide in tapioca waste can be reduced by using Photo-Fenton method. With initial COD content of 6000 mg/L and cyanide level of 0.67 mg/L. And in the operating conditions of the addition of 5 ml/l of H2O2, Fe2+ 1.25 mg/l, and light intensity of 200 lm, the highest COD and cyanide levels were found to be 900 mg/l for COD and 0.08 mg/l for cyanide. Final levels of COD up to 900 mg/l and cyanide concentrations up to 0.08 mg/l.

scholarly journals Briquettes Production as an Alternative Fuel

2021 ◽  
Vol 20 (4) ◽  
Author(s):  
U.S.P.R. Arachchige
Keyword(s):  
Industrial Waste ◽  
Crop Residue ◽  
Raw Materials ◽  
Raw Material ◽  
Alternative Methods ◽  
Agricultural Crop ◽  
Waste Generation ◽  
Binding Agent ◽  
Binding Agents ◽  
Waste Sewage Sludge

Bioenergy, which originated from agricultural crop residue and industrial waste, has been studied for sustainable energy generation. As a raw material for briquettes production, agricultural-crop residue, industrial waste, sewage, sludge, or other plants can be used. Briquettes have numerous advantages as they directly help to reduce waste generation and handling. The possibilities of the briquetting, qualities, and other essential factors for briquette production have been discussed. The alternative methods of Briquetting have been addressed with the comparison. The characteristics of the raw materials for briquettes production have been discussed to identify the best agricultural crop residue for briquettes. The properties of binding agents for the briquetting process have been discussed to identify the most practically available binding agent.

scholarly journals Bioenergy Potential Based on Vinasse From Ethanol Industrial Waste to Green Energy Sustainability

2018 ◽  
Vol 31 ◽  
pp. 02015
Author(s):  
Nani Harihastuti ◽  
Bekti Marlena
Keyword(s):  
Waste Water ◽  
Residence Time ◽  
Industrial Waste ◽  
Current Treatment ◽  
Organic Content ◽  
Green Energy ◽  
Raw Material ◽  
Hydraulic Residence Time ◽  
Integration Model ◽  
Anaerobic Filter

The waste water from alcohol industry is called vinasse has a high organic content, with BOD5 = 109.038 mg / l, COD = 353.797 mg / l and TSS = 7200 mg / l, pH 4-5 with a temperature of around 40-50ºC. The current treatment of alcohol waste water, most still using facultative anaerobic technology with open ponds that are only covered with HDPE plastics. This technology produces less optimal biogas and has a weakness that is the hydraulic residence time (HRT) for long (40-50 days), wide land needs, low COD reduction efficiency as well as high risk of fire and leakage of biogas release high to trigger the occurrence of greenhouse gas and global warming effects. Development of technology with innovation reactor integration model Fixed Dome-Hybrid Anaerobic Filter aims to expand the contact area between the substrate and microbial with modification of the substrate flow system and the area of the filter and integrate with the gas accumulator. The design of this Fixed Dome-Hybrid Anaerobic filter integration model technology, has the advantage of producing optimal bioenergy with CH4 more than 50% content with decrease of COD more than 85% and hydraulic residence time of about 10 (ten) days, bioenergy result is renewable energy made from raw material vinasse from alcohol industrial waste which can be utilized for fuel substitution on the distillation process or boiler process of the industry in a sustainable and cleaner environment.

scholarly journals PENINGKATAN KANDUNGAN LIPID DAN BIOMASSA Mikroalga Scenedesmus Sp. DARI MEDIA KULTIVASI LIMBAH CAIR TAHU SEBAGAI BAHAN BAKU BIODIESEL

2019 ◽  
Vol 5 (2) ◽  
Author(s):  
Shinta Elystia ◽  
Aisyah Sri Lestari ◽  
Sri Rezeki Muria
Keyword(s):  
Waste Water ◽  
Renewable Energy ◽  
Light Intensity ◽  
Inorganic Compounds ◽  
Cod Removal ◽  
Raw Material ◽  
Optimal Conditions ◽  
Cell Numbers ◽  
The Difference ◽  
Microalgae Growth

Sumber energi semakin berkurang diiringi dengan semakin besarnya kebutuhan energi. Hal ini dapat diantisipasi dengan melakukan pencarian sumber energi terbarukan. Upaya untuk mengantisipasi kelangkaan energi adalah dengan memanfaatkan mikroalga sebagai bahan baku bioenergi. Mikroalga Scenedesmus sp. adalah salah satu species yang memiliki kadar lipid tertinggi yang dapat digunakan sebagai bahan baku biodiesel. Oleh karena itu untuk memperoleh biomassa yang besar, perlu dilakukan kultivasi. Salah satu media kultivasi adalah limbah cair tahu. Kandungan pada limbah cair tahu dapat menjadi nutrisi bagi pertumbuhan mikroalga. Senyawa organik dan anorganik dalam limbah diserap mikroalga dan dihasilkan oksigen yang dapat mengurangi kadar COD dalam limbah. Perlakuan pada penelitian ini perbedaan volume limbah cair tahu sebesar 0%, 20%, 40%, 60%, 80% dan 100% serta intensitas cahaya 1000 lux - 4000 lux pada Fotoperiod Terang: Gelap (T:G) 12:12. Parameter yang diamati adalah jumlah sel, lipid dan efisiensi penyisihan COD. Berdasarkan hasil penelitian diperoleh kondisi optimal pada volume limbah cair tahu 20% dan intensitas cahaya 4000 lux dengan jumlah sel 6.63 x 106 sel/ml, lipid 29.73 % serta penyisihan COD 78,26%.  Kata Kunci: COD, Intensitas Cahaya, Lipid, Volume Limbah Cair Tahu, Scenedesmus sp. The source of energy decreases accompanied by the increasingly large demand for energy. This can be anticipated by searching for renewable energy sources.The effort to anticipate energy scarcity by using microalgae as a raw material of bioenergy. Microalgae Scenedesmus sp. is one of the species that has the highest lipid content that can be used as a raw material of biodiesel. Therefore, to obtain large biomass, needs to be done of cultivation. One of the cultivation media is tofu waste water. The content of tofu waste water can be a nutrient for microalgae growth. Organic and inorganic compounds in waste are absorbed by microalgae and oxygen is produced which can reduce levels of COD in waste. The treatment in this study was the difference in the volume of tofu waste water by 0%, 20%, 40%, 60%, 80% and 100% and the light intensity of 1000 lux - 4000 lux in the Light: Dark (T: G) Photoperiod 12:12. Parameters observed were cell count, lipid and COD removal efficiency. Based on the results of the study obtain optimal conditions in the volume tofu waste water 20% and light intensity 4000 lux with cell numbers 6.63 x 106 cells / ml, 29.73% lipid and COD removal eficiency 78.26%. Keywords: COD, Light Intensity, Lipid, Scenedesmus sp., Tofu Waste Water,

REVIEWS OF ELECTROCOAGULATION PROCESS ON WASTE WATER TREATMENT TECHNOLOGY

2017 ◽  
Vol 9 (1) ◽  
Author(s):  
Taty Hernaningsih
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Removal Efficiency ◽  
Industrial Waste ◽  
Waste Water Treatment ◽  
Treatment Technique ◽  
Industrial Waste Water ◽  
Strong Current ◽  
Current Voltage ◽  
Electrocoagulation Process

Waste water treatment by industry usually uses chemicals that may lead to additional environmental pollution load. On the other hand, water demand increases and environmental regulations regarding waste water disposal requirements that apply more stringent. It is necessary for waste treatment technique that accommodate this requirement. Electrocoagulation process is a technique of wastewater treatment that has been chosen because the technique is environmentally friendly. This paper will review some of the research or application electrocoagulation process which is conducted on industrial waste water. Types of industrial waste water that is to be reviewed include: industries batik, sarongs, textiles, palm oil, slaughterhouses, food, leather tanning, laundry, pulp and paper. Overview reviewed in this research include the waste water treatment process in several processing variations such as: change in time, electricity and kind of electrodes. The results of the research with electrocoagulation process in the industry are the removal efficiency of TSS, COD, BOD5, Chrome, phosphate, surfactants, color turbidity influenced by several factors including time, strong current, voltage, distance and type of electrode and pH. The results of the study with electrocoagulation process in the industry is the removal efficiency of TSS, COD, BOD5, chromium, phosphate, surfactant, turbidity color that are influenced by several factors including time, strong current, voltage, distance and type of electrode and pH. It is hoped the information presented in this article can be a reference for similar research for the improvement of research on the process ektrokoagulasi.Key words: elektrocoagulation, removal eficiency, environmental friendly

Tertiary Nitrification Pilot Plants on Parisian Waste Water

1990 ◽  
Vol 22 (1-2) ◽  
pp. 347-352 ◽  
Author(s):  
C. Paffoni ◽  
B. Védry ◽  
M. Gousailles
Keyword(s):  
Waste Water ◽  
Metropolitan Area ◽  
Fixed Bed ◽  
Point Of View ◽  
Operating Conditions ◽  
Research Center ◽  
Daily Output ◽  
Practical Point ◽  
Fixed Bed Reactors

The Paris Metropolitan area, which contains over eight million inhabitants, has a daily output of about 3 M cu.meters of wastewater, the purification of which is achieved by SIAAP (Paris Metropolitan Area Sewage Service) in both Achères and Valenton plants. The carbon pollution is eliminated from over 2 M cu.m/day at Achères. In order to improve the quality of output water, its tertiary nitrification in fixed-bed reactors has been contemplated. The BIOFOR (Degremont) and BIOCARBONE (OTV) processes could be tested in semi-industrial pilot reactors at the CRITER research center of SIAAP. At a reference temperature of 13°C, the removed load is approximately 0.5 kg N NH4/m3.day. From a practical point of view, it may be asserted that in such operating conditions as should be at the Achères plant, one cubic meter of filter can handle the tertiary nitification of one cubic meter of purified water per hour at an effluent temperature of 13°C.

Utilization of Polysaccharides and their Derivatives in the Removal of Metal Ions: Role and Recent Advancement

2020 ◽  
Vol 13 ◽  
Author(s):  
Rishabha Malviya ◽  
Pramod Sharma ◽  
Akanksha Sharma
Keyword(s):  
Waste Water ◽  
Heavy Metal ◽  
Metal Ions ◽  
Industrial Waste ◽  
Heavy Metal Ions ◽  
Environmental Hazards ◽  
Industrial Waste Water ◽  
Recent Advancement ◽  
Removal Of Metal ◽  
Removal Of Metal Ions

: Manuscript discussed about the role of polysaccharides and their derivatives in the removal of metal ions from industrial waste water. Quick modernization and industrialization increases the amount of various heavy metal ions in the environment. They can possess various disease in humans and also causes drastic environmental hazards. In this review the recent advancement for the adsorption of heavy metal ions from waste water by using different methods has been studied. Various natural polymers and their derivatives are act as effective adsorbents for the removal of heavy metal ions from the waste water released from the industries and the treated water released into the environment can decreases the chances of diseases in humans and environmental hazards. From the literature surveys it was concluded that the removal of heavy metal ions from the industrial waste water was important to decrease the environmental pollution and also diseases caused by the heavy metal ions. Graft copolymers were acts as most efficient adsorbent for the removal of heavy metal ions and most of these followed the pseudo first order and pseudo second order model of kinetics.

scholarly journals Tagasaste, leucaena and paulownia: three industrial crops for energy and hemicelluloses production

2021 ◽  
Vol 14 (1) ◽  
Author(s):  
Alberto Palma ◽  
Javier Mauricio Loaiza ◽  
Manuel J. Díaz ◽  
Juan Carlos García ◽  
Inmaculada Giráldez ◽  
...  
Keyword(s):  
Activation Energy ◽  
Acid Hydrolysis ◽  
Energy Production ◽  
Combustion Process ◽  
Operating Conditions ◽  
Raw Material ◽  
Energy Of Combustion ◽  
Increasing Temperature ◽  
Hydrolysis Of ◽  
Chamaecytisus Proliferus

Abstract Background Burning fast-growing trees for energy production can be an effective alternative to coal combustion. Thus, lignocellulosic material, which can be used to obtain chemicals with a high added value, is highly abundant, easily renewed and usually inexpensive. In this work, hemicellulose extraction by acid hydrolysis of plant biomass from three different crops (Chamaecytisus proliferus, Leucaena diversifolia and Paulownia trihybrid) was modelled and the resulting solid residues were used for energy production. Results The influence of the nature of the lignocellulosic raw material and the operating conditions used to extract the hemicellulose fraction on the heat capacity and activation energy of the subsequent combustion process was examined. The heat power and the activation energy of the combustion process were found to depend markedly on the hemicellulose content of the raw material. Thus, a low content in hemicelluloses resulted in a lower increased energy yield after acid hydrolysis stage. The process was also influenced by the operating conditions of the acid hydrolysis treatment, which increased the gross calorific value (GCV) of the solid residue by 0.6–9.7% relative to the starting material. In addition, the activation energy of combustion of the acid hydrolysis residues from Chamaecytisus proliferus (Tagasaste) and Paulownia trihybrid (Paulownia) was considerably lower than that for the starting materials, the difference increasing with increasing degree of conversion as well as with increasing temperature and acid concentration in the acid hydrolysis. The activation energy of combustion of the solid residues from acid hydrolysis of tagasaste and paulownia decreased markedly with increasing degree of conversion, and also with increasing temperature and acid concentration in the acid hydrolysis treatment. No similar trend was observed in Leucaena diversifolia (Leucaena) owing to its low content in hemicelluloses. Conclusions Acid hydrolysis of tagasaste, leucaena and paulownia provided a valorizable liquor containing a large amount of hemicelluloses and a solid residue with an increased heat power amenable to efficient valorization by combustion. There are many potential applications of the hemicelluloses-rich and lignin-rich fraction, for example as multi-components of bio-based feedstocks for 3D printing, for energy and other value-added chemicals.

Sign in / Sign up

Export Citation Format

Share Document