scholarly journals Review: Agricultural Wastes as a Source of Silica Material

2016 ◽  
Vol 1 (1) ◽  
pp. 82 ◽  
Author(s):  
Novie Permatasari ◽  
Transmissia Noviska Sucahya ◽  
Asep Bayu Dani Nandiyanto

Silica is the most abundant components in the earth's crust and is made by way of synthesis for use in the application of technology. Silica are generally found commercially as alkoxysilane compounds (i.e such as tetraethylorthosilicate (TEOS), sodium silicate, and tetramethylorthosilicat). However, these compounds can have a negative impact on health. Thus, further approaches to find the source of silica that is safer, cheaper, and more environmentally friendly is inevitable. However, not all summary journals are thoroughly discussed the silica sources. Further, method of isolation and application of the silica from agricultural waste is limited. This paper reported studied several sources of silica derived from agricultural waste, such as rice husk, rice straw, corn cobs, and bagasse. In addition, this paper discussed also about the method of isolation of silica from agricultural waste, and its application as a catalyst.

2016 ◽  
Vol 1 (1) ◽  
pp. 82 ◽  
Author(s):  
Novie Permatasari ◽  
Transmissia Noviska Sucahya ◽  
Asep Bayu Dani Nandiyanto

Silica is the most abundant components in the earth's crust and is made by way of synthesis for use in the application of technology. Silica are generally found commercially as alkoxysilane compounds (i.e such as tetraethylorthosilicate (TEOS), sodium silicate, and tetramethylorthosilicat). However, these compounds can have a negative impact on health. Thus, further approaches to find the source of silica that is safer, cheaper, and more environmentally friendly is inevitable. However, not all summary journals are thoroughly discussed the silica sources. Further, method of isolation and application of the silica from agricultural waste is limited. This paper reported studied several sources of silica derived from agricultural waste, such as rice husk, rice straw, corn cobs, and bagasse. In addition, this paper discussed also about the method of isolation of silica from agricultural waste, and its application as a catalyst.


2021 ◽  
Vol 5 (2) ◽  
pp. 102
Author(s):  
Aprilia Ike Nurmalasari ◽  
Supriyono Supriyono ◽  
Maria Theresia Sri Budiastuti ◽  
Trijono Djoko Sulistyo ◽  
Sri Nyoto

<p><em><strong>Composting of Rice Straw for Organic Fertilizer and Manufacturing Rice Husk Charcoal as Planting Medium in Soybean Demonstration Plot.</strong> Agricultural waste is the residue from an agricultural business activity, which if left unch</em>ecked can have a negative impact on the environment. Agricultural waste such as rice straw can be used for organic fertilizers because it has high potassium and lignin content. The purpose of this community service activity is to increase the knowledge and skills of the community and farmers about straw processing through the composting stage as organic fertilizer and burning rice husks into husk charcoal as a planting medium in soybean cultivation. Community service was carried out from July to August 2020 in Pengkok Village, Kedawung District, Sragen Regency, namely in the Subur and Sumber Agung farmer groups. Community service activities carried out are counseling or socialization of the use of straw and husk charcoal as organic fertilizer and planting media, then proceed with demonstrations or practices for making organic fertilizers and husk charcoal which are continued with planting soybeans in polybags with the application of compost and husk charcoal that have been made. The result of this service activity is that participants or farmer groups can make organic fertilizer from straw waste and husk charcoal independently and can be applied when cultivating soybeans in polybags as well as understanding the stages of making straw compost and burning husks into husk charcoal. The conclusion from the service activities that have been carried out is the understanding of the knowledge of community service participants about the methods or stages of composting in making organic fertilizer and making husk charcoal from rice husk waste for planting media as proven by farmers being able to make organic fertilizer from rice straw which initially becomes waste that is not optimal. used as compost which is made through the composting stage and the manufacture of husk charcoal using the burning method in a funnel and then applied in the soybean demonstration plot experiment in polybags.</p>


2018 ◽  
Vol 3 (2) ◽  
Author(s):  
Eryani . ◽  
Sri Aprilia ◽  
Farid Mulana

<p>Agricultural waste such as rice straw, rice husk and rice husk ash have not been utilized properly. This waste of agricultural produce can actually be used as an alternative to bionanofiller because it contains an excellent source of silica. The silica content contained in the rice waste when combined with the polymer matrix can produce composites having high thermal and mechanical properties. Characterization of bionanofiller from this rice waste is done by SEM, XRF, FTIR, XRD and particle density. The result of SEM analysis from this rice waste is feasible to be used as filler because it has size 1 μm. Likewise with the results of XRF analysis that rice waste contains a high enough silica component that is 80.6255% - 89.83%. FTIR test results also show that bionanoparticles from rice waste have the same content of silica. In the XRD analysis the best selective gain of rice waste is found in rice husk ash which is characteristic of amorp silica at a range of 2ϴ = 22<br />. The largest density analysis of paddy waste was found in rice husk 0.0419 gr / cm , followed by rice straw by of 0.0417 gr / cm 3 and rice hulk ash 0.0407 g / cm 3</p>


2018 ◽  
Vol 5 (3) ◽  
pp. 374-381
Author(s):  
Ulfa Heryani ◽  
Benny Hidayat ◽  
Mukhlis

Nitrogen is very important nutrient growth of plant but eassy lost from soil. The aim of this researc to get the best biochar feedstock in maintaining N-total in the Inceptisol soil. Theresearch was carried out in the laboratory using the method of experiment. This research was carried out with complete randomized design non factorial with the treatment without biochar (controls), and 4 types of biochar from palm empty fruit bunches, rice straw, rice husks and wood, is repeated four times. The observed parameters are pH H2O,CEC, & N-total ground. The results showed that the four types of biochar can increase the pH H2O, CEC, N-total ground. Loss of Nutrient N decreased significantly due to the granting of biochar palm empty fruit bunches. Absorption capacity of biochar to reduce leaching of N in the soil of inseptisol sorted from largest to smallest is biochar palm empty fruit bunches, rice husk, rice straw and wood.


Author(s):  
KHEMJIRA JARMKOM ◽  
WARACHATE KHOBJAI ◽  
SURACHAI TEACHAOEI ◽  
DUANGRATANA SHUWISITKUL

Objective: The purpose of this research was to produce carboxymethyl cellulose from rice husk (CMCRH) and used it as a raw material in food orhealth products.Methods: Cellulose was extracted from husk rice and converted to CMC (CMCRH) using sodium hydroxide (NaOH) and monochloroacetic acid inisopropanol (C3H8O).Results: CMCRH was characterized for chemical composition and morphology by scanning electron microscopy. Microscopy analysis showed thatchemical composition changes with increasing sodium content (Na-). Likewise, morphology has changed. Physicochemical and viscosity tests showedthat were similar properties compare with commercial CMC.Conclusion: CMC is derived cellulose that is used in products for various applications. RH is an agricultural waste that is carried out to synthesize CMC(CMCRH). Finally, CMCRH has the potential to be used in raw materials in food or health products which biodegradable material.


2021 ◽  
Vol 937 (4) ◽  
pp. 042061
Author(s):  
A Smolyanichenko ◽  
I Kulik ◽  
E Yakovleva

Abstract Wastewater from car wash stations of agricultural machinery is contaminated with mechanical impurities, oil products, pollution generated by exhaust gases, fertilizers and processing agents used in agriculture, as well as a large amount of surfactants. Purification of this wastewater to the quality required for their reuse allows organizing a circulating water supply scheme, which significantly reduces not only the negative impact on the environment, but also the need for clean tap water. This article describes the results of wastewater treatment from car wash stations of agricultural machinery on an electroflotator and post-treatment by filtration through various filter media, incl. through a sorbent made of modified rice straw - agricultural waste.


Author(s):  
Kadek Rachmawati ◽  
Imam Mustofa ◽  
Wurlina Wurlina ◽  
Dewa Ketut Meles

Iptek bagi Masyarakat (IbM) which performed on a group of local cattle fattening is not qualified yet to solve the problems 1) rice straw as animal feed 2) agricultural waste and industrial waste as feed without forage 3) processing of rice straw into straw tape 4) processing agricultural waste and industrial waste into animal feed without forage 5) processing growth promotor derived from empon-empon and retrieval medicinal plants, and 6) making of cow manure waste into environmentally friendly fertilizer. The purposes of IbM are (1) to process of rice straw into straw tape as a nutritious animal feed (2) without forage feed processing (complete feed) (3) processing of growth promotors (4) local cattle fattening using tape straw and feed without forage as well as growth promotor. Benefits of IbM is to develop human resources and increase income of fattening local cattle farmers with lower production costs. The method used in IbM activities are education and training of local cattle fattening using tape straw feed and feed without forage plus growth promotor, processing waste into environmentally friendly fertilizer on UKMK of local cattle fattening members in Babat and Sugio district in Lamongan. IbM program activities involving 8 students to increase entrepreneurial spirit. The result is enhancement of cattle weight per cow per day on local cattle amounted to 0.578+0.054 kg, ongole crossbreed cattle 0.887+0.100 kg, hybrid limousine cattle for 1.588+0.084 kg and Simmental crossbreed cattle of 1,967+0.255 kg. AbstrakIptek Bagi Masyarakat (IbM) yang dilakukan pada kelompok penggemukan sapi lokal belum memenuhi syarat untuk menyelesaikan masalah 1) jerami padi sebagai pakan ternak 2) limbah pertanian dan limbah industri sebagai pakan tanpa hijauan 3) pengolahan jerami padi menjadi pita jerami 4) pengolahan limbah pertanian dan limbah industri menjadi pakan ternak tanpa pakan ternak 5) mengolah promotor pertumbuhan yang berasal dari empon-empon dan pengambilan kembali tanaman obat, dan 6) pembuatan limbah kotoran sapi menjadi pupuk ramah lingkungan. Tujuan IbM adalah (1) mengolah jerami padi menjadi pita jerami sebagai pakan ternak yang bergizi (2) tanpa pengolahan pakan ternak (pakan lengkap) (3) pengolahan promoter pertumbuhan (4) penggemukan sapi lokal dengan menggunakan jerami dan pakan pita tanpa pakan ternak serta promotor pertumbuhan. Manfaat IbM adalah mengembangkan sumber daya manusia dan meningkatkan pendapatan penggemukan peternak sapi lokal dengan biaya produksi lebih rendah. Metode yang digunakan dalam kegiatan IbM adalah pendidikan dan pelatihan penggemukan sapi dengan pakan jerami dan pakan tanpa pakan ternak ditambah promotor pertumbuhan, pengolahan limbah menjadi pupuk ramah lingkungan pada UKMK penggemukan sapi potong di Kabupaten Babat dan Sugio di Lamongan. Kegiatan program IbM melibatkan 8 siswa untuk meningkatkan semangat kewirausahaan. Hasilnya adalah peningkatan bobot sapi per ekor per hari pada ternak lokal sebesar 0,578 + 0,054 kg, sapi potong silang ongole 0,887 + 0,100 kg, ternak limusin hibrida 1,588 + 0,084 kg dan sapi potong silang Simmental 1.967 + 0.255 kg. 


2021 ◽  
Vol 912 (1) ◽  
pp. 012020
Author(s):  
A Yustira ◽  
H Harahap ◽  
H Nasution ◽  
A Pranata

Abstract Cellulose is one of the natural resources that are very abundant in nature. Cellulose is the main component in plant cell wall, so that abundant availability makes it potential to be used as a more valuable product. Cellulose can be obtained from agricultural wastes such as pea peels, rice straw, cucumber peels, eggplant stems, and coconut husks to produce cellulose. This cellulose has good biodegradability and biocompatibility so that it can be widely beneficial in the industrial sector. The product was obtained by a method developed for isolating cellulose by alkali treatment, acid hydrolysis, delignification process, and bleaching. The best cellulose from agricultural waste utilization is indicated by the crystallinity value in pea peels of 79% and yield of rice straw 90.28%, which is better than other agricultural wastes.


Environmental problems increase due to disposal of wastes in large quantities. Industrial wastewater is the most serious pollutants because it contains high concentrations of toxic substances and heavy metals. Agricultural wastes also cause environmental pollutants especially when it is disposed by burning. So, it is necessary to find usage of agricultural wastes as a low cost material for adsorption of heavy metals such as zinc and chromium in industrial wastewater.Rice husk fiber was used in this study to remove zinc and chromium from industrial wastewater. The obtained removal ratios obtained were 94.33% and 89.2% for Zn+2 and Cr (VI), respectively.The study showed that the removal ratio increases by increasing the adsorption contact time and decreasing the flow rate. It also showed that, the removal efficiency for zinc was better than Cr (VI) using rice husk waste fiber. The success of use the cheap adsorbent as adsorbent material from the agricultural waste in industrial wastewater treatment open the door for the existing factories to treat their wastewater with low cost that has no effect on their profits and prevent any punishment for environmental pollution


Author(s):  
Wurlina Wurlina ◽  
Mas’ud Hariadi ◽  
Imam Mustofa ◽  
Dewa Ketut Meles

Program Kemitraan Masyarakat (PKM) which performed on a group of cattle fattening is not qualified yet to solve the problems 1) rice straw as animal feed 2) agricultural waste and industrial waste as feed without forage 3) processing of rice straw into straw tape 4) processing agricultural waste and industrial waste into animal feed without forage 5) processing growth promotor derived from empon-empon and retrieval medicinal plants, and 6) making of cow manure waste into environmentally friendly fertilizer. The purposes of PKMare (1) to process of rice straw into straw tape as a nutritious animal feed (2) without forage feed processing (complete feed) (3) processing of growth promotors (4) local cattle fattening using tape straw and feed without forage as well as growth promotor. Benefits of PKM is to develop human resources and increase income of fattening local cattle farmers with lower production costs. The method used in PKM activities are education and training of local cattle fattening using tape straw feed and feed without forage plus growth promotor, processing waste into environmentally friendly fertilizer on UKMK of local cattle fattening members in Tuban. The result is enhancement of cattle weight per cow per day on local cattle amounted to 0.625 ± 0.048 kg, ongole rossbreed cattle 0.924 ± 0.067 kg, hybrid limousine cattle for 1.673 ± 0.068 kg and Simmental crossbreed cattle of 2.105 ± 0.414kg.AbstrakProgram Kemitraan Masyarakat (PKM) yang dilakukan pada kelompok penggemukan sapi belum memenuhi syarat untuk menyelesaikan masalah 1) jerami padi sebagai pakan ternak 2) limbah pertanian dan limbah industri sebagai pakan tanpa hijauan 3) pengolahan jerami padi menjadi pita jerami 4) pengolahan limbah pertanian dan industri limbah menjadi pakan ternak tanpa hijauan 5) promotor pertumbuhan pengolahan berasal dari empon-empon dan pengambilan tanaman obat, dan 6) pembuatan kotoran sapi menjadi pupuk ramah lingkungan. Tujuan dari PKM adalah (1) untuk memproses jerami padi menjadi pita jeramisebagai pakan ternak bergizi (2) tanpa pengolahan pakan hijauan (pakan lengkap) (3) pengolahan promotor pertumbuhan (4) penggemukan sapi lokal menggunakan pita jerami dan pakan tanpa hijauan serta promotor pertumbuhan. Manfaat PKM adalah mengembangkan sumber daya manusia dan meningkatkan pendapatan penggemukan sapi lokal dengan biaya produksi lebih rendah. Metode yang digunakan dalam kegiatan PKM adalah pendidikan dan pelatihan penggemukan sapi lokal menggunakan tape jerami pakan dan pakan tanpa hijauan ditambah promotor pertumbuhan, pengolahan limbah menjadi pupuk ramah lingkungan pada UKMK anggota penggemukan sapi lokal di Tuban. Hasilnya adalah peningkatan berat sapi per sapi per hari pada sapi lokal sebesar 0,625 ± 0,048 kg, sapi peranakan ongole 0,924 ± 0,067 kg, sapi limusin hibrida untuk 1,673 ± 0,068 kg dan sapi potong silang Simmental sebesar 2,105 ± 0,414 kg.


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