SEQUESTRATION OF COPPER (II) FROM SIMULATED WASTEWATER USING PRE-TREATED RICE HUSK WASTE BIOMASS

2016 ◽  
Vol 15 (8) ◽  
pp. 1689-1703 ◽  
Author(s):  
Ackmez Mudhoo ◽  
Manjeet Bansal ◽  
Vinod Kumar Garg ◽  
Diwan Singh
Keyword(s):  
Rice Husk ◽  
Waste Biomass ◽  
Simulated Wastewater

scholarly journals Synthesis and characterization of rice husk biochar via hydrothermal carbonization for wastewater treatment and biofuel production

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Nazia Hossain ◽  
Sabzoi Nizamuddin ◽  
Gregory Griffin ◽  
Periasamy Selvakannan ◽  
Nabisab Mujawar Mubarak ◽  
...  
Keyword(s):  
Rice Husk ◽  
Agricultural Waste ◽  
Value Added ◽  
Hydrothermal Carbonization ◽  
Catalytic Performance ◽  
Biofuel Production ◽  
Suspension Stability ◽  
Waste Biomass ◽  
Suitable Material ◽  
Rice Husk Biochar

Abstract The recent implication of circular economy in Australia spurred the demand for waste material utilization for value-added product generations on a commercial scale. Therefore, this experimental study emphasized on agricultural waste biomass, rice husk (RH) as potential feedstock to produce valuable products. Rice husk biochar (RB) was obtained at temperature: 180 °C, pressure: 70 bar, reaction time: 20 min with water via hydrothermal carbonization (HTC), and the obtained biochar yield was 57.9%. Enhancement of zeta potential value from − 30.1 to − 10.6 mV in RB presented the higher suspension stability, and improvement of surface area and porosity in RB demonstrated the wastewater adsorption capacity. Along with that, an increase of crystallinity in RB, 60.5%, also indicates the enhancement of the catalytic performance of the material significantly more favorable to improve the adsorption efficiency of transitional compounds. In contrast, an increase of the atomic O/C ratio in RB, 0.51 delineated high breakdown of the cellulosic component, which is favorable for biofuel purpose. 13.98% SiO2 reduction in RB confirmed ash content minimization and better quality of fuel properties. Therefore, the rice husk biochar through HTC can be considered a suitable material for further application to treat wastewater and generate bioenergy.

Preparation of Cationic Rice Husk Flocculant and its Flocculating Characteristics

2011 ◽  
Vol 415-417 ◽  
pp. 1667-1670
Author(s):  
Ying Huan Fu ◽  
Cheng Lin Lin ◽  
Li Feng Chen ◽  
Yu Song ◽  
Hong Chao Ma
Keyword(s):  
Sulfuric Acid ◽  
Rice Husk ◽  
Sulfuric Acid Concentration ◽  
Temperature Reaction ◽  
Natural Polymer ◽  
Initiator Concentration ◽  
Synthetic Process ◽  
Cationic Flocculant ◽  
Quaternary Ammonium Group ◽  
Simulated Wastewater

Natural polymer cationic flocculant was prepared by introducing quaternary ammonium group into the rice husk molecules, using potassium permanganate as initiator. The influence of synthetic conditions affecting flocculation was studied, such as reaction temperature, reaction time, dosage of initiator, concentration of sulfuric acid and material ratio. The flocculent experiment of diatomite was chosen to evaluate the capability of flocculant. The results show that the flocculant has good flocculent capacity, the removal of turbidity can reach above 90% for simulated wastewater under the optimistic conditions of synthetic process as follows: etherification temperature, 50°C; etherification time, 3h; initiator concentration, 3 mmol/L; sulfuric acid concentration, 1.8 mmol/L; ratio of rice husk to OTAC, 2: 3.

scholarly journals PENYISIHAN ION LOGAM MERKURI (Hg2+) MENGGUNAKAN ADSORBEN BERBAHAN BAKU LIMBAH PERTANIAN DAN GULMA TANAMAN

2017 ◽  
Vol 6 (1) ◽  
pp. 7-11 ◽  
Author(s):  
Miftahurrahmah ◽  
Suhendrayatna ◽  
Muhammad Zaki
Keyword(s):  
Metal Ions ◽  
Rice Husk ◽  
Water Hyacinth ◽  
Agricultural Waste ◽  
Water Phase ◽  
Waste Biomass ◽  
Rice Husks ◽  
Random Surface ◽  
Phase Water ◽  
Short Time

This research was conducted to prepare adsorbents from agricultural and weeds waste biomass to remove Hg2+ metal ions from water phase. Water hyacinth biomass (agricultural waste) and rice husk (weed) was cleaned, dried in an oven dryer, and carbonized in a furnace at 500oC for 2 hours. Then, dried carbon was milled to get 100 mesh of size and was followed by activation using 0.5 N NaOH. The adsorption process was conducted by mix 1 gram of activated adsorbent on a 100 ml water containing 3 ppm Hg2+ metal ions at 100 rpm, pH 5, and 30oC. Hg2+ concentration in water phase were analyzed using AAS, Shimadzu AA-6300 for a specified time within a period of 20-100 minutes. This study shows that at the beginning process of adsorption, adsorbent from rice husk has ability to decrease 69.91% concentration of Hg2+ for 20 minutes, while adsorbent from water hyacinth reaches to 94.26%. The characterization results of FTIR spectra and SEM shows that adsorbent from water hyacinth was able to absorb more Hg2+ metal ions in a short time because it has a functional group that was able to bind heavy metals, and also has a random surface structure, compared with the adsorbent from rice husks that has less functional groups with uniform morphology structure

scholarly journals Clean and Efficient Synthesis of High-Quality Silica From Rice Husk Ash

2021 ◽  
Author(s):  
Tang Baoyu ◽  
Zhang Long ◽  
Yu Zaiqian
Keyword(s):  
Rice Husk ◽  
Production Cost ◽  
Rice Husk Ash ◽  
Value Added ◽  
Industrial Effluents ◽  
Product Yield ◽  
Complex Salt ◽  
Chemical Precipitation ◽  
Process Efficiency ◽  
Waste Biomass

Abstract Rice husk ash derived from the rice husk, a renewable waste biomass resource from rice production can be used to produce high value-added silica materials with various applications. But present technologies suffer the shortages of using inorganic acid as the precipitating agent, complex salt-containing wastewater post-treatment, higher production cost, lower product quality, and without the recycling of process additives. In this paper, improved clean chemical precipitation characterizing of recycling the by-product and surfactant used is developed with the highest silica product yield of 99.3%, pore size (21-35 nm), and specific surface area (196-462 m2/g). After the by-product solution is reused 5 times, the yield of silica can still reach 99.1%. The recovery yield of surfactant is 95.3%. The properties of the prepared silica meet the standard of silica for specific applications. The process characterized the recycling of the by-product and surfactant in the process, greener CO2 precipitant, ensuring the greenness, process efficiency, and low production cost. This opens up a new industrialization practical way for up-grading utilization of waste biomass and CO2 containing industrial effluents.

scholarly journals The Analysis of Low-Cost Pb(II) Adsorbents using Batch Method of Solid-Phase Spectrophotometry

2021 ◽  
Vol 1 (1) ◽  
pp. 38-45
Author(s):  
Sulistyo Saputro ◽  
Ashadi Ashadi ◽  
Lina Mahardiani ◽  
Nurma Yunita Indriyanti ◽  
Maria Ciptaning Sabdo Kawedhar ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Rice Husk ◽  
Natural Zeolite ◽  
Metal Ion ◽  
Solid Phase ◽  
Health Problems ◽  
Single Beam ◽  
Adsorption Processes ◽  
Simulated Wastewater ◽  
Solid Phase Spectrophotometry

Heavy metal pollutants contained in wastewater can cause health problems for living things around. Minor to fatal health problems can occur due to heavy metal poisoning, mainly caused by Pb(II) metal.. This study aimed to determine the optimum mass combination of rice husk and zeolite to adsorb Pb(II) metal ions in simulated wastewater, and to determine the sensitivity of the analysis method. This study used Solid Phase Spectrophotometry (SPS) to determine the decrease in Pb(II) metal ion levels after being adsorbed by activated carbon from rice husks and zeolites. This study used an experimental method with simulated wastewater samples containing Pb(II) at several concentrations. Pb(II) adsorption processes by rice husk and natural zeolite used various adsorbents' mass ratios. The adsorbents were characterized by using Fourier-Transform Infra-Red (FTIR) Spectrophotometry. Pb(II) analysis during adsorption processes used a single beam UV-visible Spectrophotometer for Solid-Phase Spectrophotometry. This study indicates that the combination of adsorbent from rice husk and natural zeolite can properly adsorb Pb(II) ions with an adsorption capacity of 0.75 μg g-1 and 0.025 μg L-1 for the LoD of the instrument.

The Analysis of Low-Cost Pb(II) Adsorbents using Batch Method of Solid-Phase Spectrophotometry

2021 ◽  
Vol 7 (1) ◽  
pp. 38-45
Author(s):  
Sulistyo Saputro ◽  
Ashadi Ashadi ◽  
Lina Mahardiani ◽  
Nurma Yunita Indriyanti ◽  
Maria Ciptaning Sabdo Kawedhar ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Rice Husk ◽  
Natural Zeolite ◽  
Metal Ion ◽  
Solid Phase ◽  
Health Problems ◽  
Single Beam ◽  
Adsorption Processes ◽  
Simulated Wastewater ◽  
Solid Phase Spectrophotometry

Heavy metal pollutants contained in wastewater can cause health problems for living things around. Minor to fatal health problems can occur due to heavy metal poisoning, mainly caused by Pb(II) metal.. This study aimed to determine the optimum mass combination of rice husk and zeolite to adsorb Pb(II) metal ions in simulated wastewater, and to determine the sensitivity of the analysis method. This study used Solid Phase Spectrophotometry (SPS) to determine the decrease in Pb(II) metal ion levels after being adsorbed by activated carbon from rice husks and zeolites. This study used an experimental method with simulated wastewater samples containing Pb(II) at several concentrations. Pb(II) adsorption processes by rice husk and natural zeolite used various adsorbents' mass ratios. The adsorbents were characterized by using Fourier-Transform Infra-Red (FTIR) Spectrophotometry. Pb(II) analysis during adsorption processes used a single beam UV-visible Spectrophotometer for Solid-Phase Spectrophotometry. This study indicates that the combination of adsorbent from rice husk and natural zeolite can properly adsorb Pb(II) ions with an adsorption capacity of 0.75 μg g-1 and 0.025 μg L-1 for the LoD of the instrument.

Rice husk and rice husk ash reutilization into nanoporous materials for adsorptive biomedical applications: A review

2016 ◽  
Vol 3 (1) ◽  
Author(s):  
Wee-Keat Cheah ◽  
Chee-Heong Ooi ◽  
Fei-Yee Yeoh
Keyword(s):  
Power Generation ◽  
Sodium Silicate ◽  
Rice Husk ◽  
Rice Husk Ash ◽  
Renewable Resource ◽  
Activation Process ◽  
Waste Biomass ◽  
Complete Combustion ◽  
Continuous Generation ◽  
Single Rice

AbstractThe continuous generation of rice husk biomass makes this waste biomass a consistent and renewable resource for carbon zero power generation. Biochar from the power generation industry could be further utilized and converted into activated carbon through a simple activation process, foregoing the conventional carbonization process. Complete combustion of rice husk into rice husk ash could be subsequently processed into sodium silicate with little difficultly since more than 90%of the rice husk ash constituent is silica. Sodium silicate is used mainly as a precursor for both the synthesis of mesoporous silica and zeolite. This paper reviews on the various nanoporous adsorbents derived from a single rice husk biomass.

scholarly journals Evaluation of Enhancement Factor for Removal of Heavy Metal Ions from Water through Adsorption by Non-Activated and Activated Carbon Prepared from Rice Husk

2021 ◽  
Vol 64 (3) ◽  
pp. 206-213
Author(s):  
Muhammad Irfan ◽  
Amir Shafeeq ◽  
Tahir Saleem Nasir ◽  
Farzana Bashir ◽  
Tausif Ahmad ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Activated Carbon ◽  
Metal Ions ◽  
Rice Husk ◽  
Enhancement Factor ◽  
Heavy Metal Ions ◽  
Low Cost ◽  
Chemical Activation ◽  
Volatile Matter ◽  
Waste Biomass

Removal of heavy metal ions (HMI) from water streams is desirable due to their toxic and carcinogenic effects. Therefore, this study was conducted to prepare a low cost adsorbent in the form of non-activated carbon (NAC) and activated carbon (AC) using rice husk, a local bio-waste material. Activation of material was performed by base leaching, chemical activation using ZnCl2, followed by acid washing. The initial and final concentrations of HMI in water were measured using Atomic Absorption Spectroscopy. Volatile matter, ash, moisture and surface area of the prepared material were measured using ASTM methods E 897- 88 R04, E 830 - 87 R04, E 949 - 88 R04 and D 1050 - 1 respectively. An enhancement factor was used to evaluate the activating effect of the adsorbent. Maximum % age removal of HMI was measured as 69.0, 64.0, 62.0 and 56% for Ni, Cd, Zn and Pb respectively using NAC. However, by using AC, a significant increase in the %age removal efficiency of HMI was observed and measured as 99.0, 95.5, 93.0 and 89% for Ni, Cd, Zn and Pb respectively. The results showed that AC derived from waste biomass is a simple, ecological and cost-effective approach to remove bulk of metal ions from water and wastewater.  

scholarly journals Design and Improvement of Existing Briquette Making Machine

2021 ◽  
Vol 9 (VI) ◽  
pp. 1391-1397
Author(s):  
Sohel Shaikh
Keyword(s):  
Rice Husk ◽  
Fossil Fuels ◽  
Raw Materials ◽  
Low Cost ◽  
Raw Material ◽  
Waste Biomass ◽  
Renewable Energy Resources ◽  
Steam Generation ◽  
Coffee Husk ◽  
Groundnut Shell

There has been a recent push to replace the burning of fossil fuels with biofuel. The replacement of this non-renewable energy resources with biological waste lowers the overall pollution of the world. The waste biomass similar to dry leaves, sawdust, rice husk, coffee husk etc. are gathered and compressed into the briquettes, these briquettes can also transport and used as fuel to generate heat and energy. It is a time to take initiative to turn Biomass into a source of energy. Hence here we are taking responsibility in converting agricultural and forestry wastes into useful biomass briquettes, which can also be used as a substitute for Coal and other non-renewable resources. Biomass briquettes are a biofuel substitute or replacement to a coal and charcoal. Biomass briquettes can be manufactured by using agricultural and forestry waste. The low-density biomass Is converted into high density biomass briquettes with the help of a briquetting machine that Uses binder or without binder i.e., binder less technique, as there is no any type of chemical is used so it is 100% natural. The mostly used raw material for biomass briquettes, Mustard Stalks, Sawdust, Groundnut Shell, Coffee Husk, Coir Pitch, Jute Sticks, Sugarcane Bagasse, Rice Husk, Cotton Stalks, Caster Seed Shells / Stalk, Wood Chips, Paddy straw, Tobacco Waste, Tea Waste, maize stalks, bajra Cobs, Arhar stalks, Bamboo Dust, Wheat Straw, Sunflower Stalk, Palm Husk, Soya bean Husk, Veneer Residues, Barks & Straws, Leaf’s, Pine Niddle, Seeds Cases etc. are used. Biomass Briquette are largely used for any type of thermal application, like steam generation in Boilers, in furnace & foundries (It can be used for metal heating & melting where melting point Is less than 1000d/cel.), for heating purpose (Residential & Commercial Heating in winter, Heating in Cold areas and Hotels, Canteens, Cafeterias and house hold kitchen appliances, restaurants etc.), There are several machines available in market but those machines are bulky and are costly, hence here we have developed a portable, low-cost briquetting machine, which makes use of simple mechanism to convert the biological waste into useful briquettes. Any waste or any proportion of Agri waste can be used but with proper binding agent. Some raw materials doesn’t require any binding material high pressure compression is used. The paper presents the results of a project focused on the development of briquettes from the sawdust (Waste Wood) resulting from the primary waste from timber companies. This sawdust currently lacks a useful purpose, and its indiscriminate burning generates CO and CO2 emissions which are harmful to nature. Sawmill Agri waste is a huge problem specially in urban cities. These wastes are burnt openly which is causing environmental pollution and also becomes reason for human health care.

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