Biological pretreatment of waste from the leather industry to obtain biogas through anaerobic co-digestion processes - A review

Mapping Intimacies ◽

10.24264/icams-2020.ii.8 ◽

2020 ◽

Author(s):

Mariana Ferdes ◽

Rodica Roxana Constantinescu

Keyword(s):

Biological Treatment ◽

Negative Impact ◽

Vegetable Waste ◽

Biological Pretreatment ◽

Leather Industry ◽

Plant Materials ◽

Industry Waste ◽

Chemical Treatments ◽

Animal Fat ◽

Enzyme Complexes

The leather industry produces a relatively high amount of hard degradable waste, with a negative impact on the environment. This waste usually contains two major categories of residues, namely animal fat and residues containing mostly proteins, suitable for biogas conversion. Obtaining biogas from leather waste by co-digestion with vegetable waste can be a sustainable and eco-friendly alternative to conventional energy from fuels. Anaerobic co-digestion is now considered to reduce waste from various sources and turn it into energy, generating in addition a digestate used as fertilizer in agriculture. This waste is relatively resistant to transformation into an easily fermentable substrate for anaerobic digestion to produce biogas. Thus, the methane yield can be significantly improved by biological treatments with enzymes and enzyme complexes, with microorganisms selected and used as inoculum or by mixed methods, which include other physical or chemical treatments. This paper aims to show the main methods of biological treatment of leather industry waste, in order to increase the yield of biogas by co-digestion with plant materials.

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Characteristics of Newly Developed Extruded Products Supplemented with Plants in a Form of Microwave-Expanded Snacks

Materials ◽

10.3390/ma14112791 ◽

2021 ◽

Vol 14 (11) ◽

pp. 2791

Author(s):

Katarzyna Lisiecka ◽

Agnieszka Wójtowicz ◽

Marek Gancarz

Keyword(s):

Physical Properties ◽

Nutritional Value ◽

Negative Impact ◽

Total Phenolic ◽

Extrusion Cooking ◽

Negative Effects ◽

Plant Materials ◽

Texture Profile ◽

Fresh Plant Material ◽

Extruded Products

The following research focuses on the possibility of applying fresh plant material as a carrot pulp to supplement newly developed extruded products in the form of pellets and microwave-expanded snacks. Fresh carrot pulp, as a valuable vegetable ingredient, was used in the amount of 2.5 g/100 g to 30.0 g/100 g in a potato-based recipe. The snack pellets were processed via extrusion-cooking, using a single-screw extruder with a plasticizing unit L/D = 18, and the use of variable screw speeds. The produced pellets underwent microwave expansion to limit the fat content, so as to produce ready-to-eat (RTE) snacks. The pellets and snacks were tested for nutritional value, as well as for selected quality features: physical properties, structure, pasting characteristics, and texture profile, and PCA analysis and a correlation matrix were performed on the obtained results. Microwave expansion of pellets increased the total phenolic content, the antioxidant activity, water absorption index and lightness of snacks, but decreased the bulk density and setback values of the expanded products when compared to pellets. Generally, we found that it was possible to use up to 30.0 g/100 g of fresh carrot pulp with a positive effect on nutritional value, and without negative effects on the physical properties of extruded products. Both the extrusion-cooking and microwave expansion can minimize the negative impact on plant materials, due to the short processing time.

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Physicochemical and Genotoxic Evaluations of Singed Cowhide Meat (Ponmo) Wastewater

Journal of Health and Pollution ◽

10.5696/2156-9614-8.20.181207 ◽

2018 ◽

Vol 8 (20) ◽

Author(s):

Ebenezer Olasunkanmi Dada ◽

Hadijat Oluwatobi Osilagun ◽

Kelechi Longinus Njoku

Keyword(s):

Public Health ◽

Negative Impact ◽

Oxygen Demand ◽

Exposure Period ◽

Root Growth Inhibition ◽

Leather Industry ◽

Health Practitioners ◽

Financial Interests ◽

Nutritional Benefits ◽

Public Health Practitioners

Introduction. In spite of doubts over the safety and nutritional benefits of singed cowhide meat, called ponmo in some parts of Nigeria, and its potential negative impact on the hide and leather industry, consumption in Nigeria and many parts of Africa has continued unabated. Objectives. In the present study, physicochemical and genotoxic assessments of wastewater used to rinse ready-to-cook singed cowhide meat were carried out. Methods. Physicochemical analyses were carried out using the American Public Health Association procedures, while genotoxic assessment was carried out using Allium cepa chromosome assay. Results. The results of the physicochemical analyses indicated that some of the parameters, especially metals, were within the threshold of the limits set by the country's regulatory agencies, but some parameters like phosphate, chloride, nitrate, biological oxygen demand, and chemical oxygen demand were higher in concentration. The wastewater inhibited the growth of A. cepa roots and caused a decrease in its mitotic index relative to the control onions exposed to water only. The highest root growth inhibition of 72.14% was induced by a 10% wastewater concentration, while the lowest (53.57%) was induced by a 5% wastewater concentration. In addition, the wastewater induced bi-nucleated, attached, vagrant, C-mitosis, sticky and bridged chromosomal aberrations. Wastewater at a 5% concentration induced the highest significant (P < 0.05) percentage chromosome aberration of 36.62% at 48 hours of exposure. Sticky chromosomes had the highest significant frequency (P <0.01) at the end of the 72-hour exposure period. No chromosomal aberration was observed in the control. Conclusions. These results indicate that singed cowhide meat wastewater is potentially genotoxic and environmentally harmful. Governments, public health practitioners, and relevant stakeholders should work in synergy to discourage the habit of processing cowhide into cowhide meat. Competing Interests. The authors declare no competing financial interests.

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Utilization of a leather industry waste

Waste Management ◽

10.1016/s0956-053x(97)00020-2 ◽

1996 ◽

Vol 16 (8) ◽

pp. 765-769 ◽

Cited By ~ 15

Author(s):

L.S. Simeonova ◽

P.G. Dalev

Keyword(s):

Leather Industry ◽

Industry Waste

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Evaluation of the Effectiveness of the Use of Enzyme Complexes in the Process of Biological Treatment of Wastewater from Pulp and Paper Enterprises

Ecology and Industry of Russia ◽

10.18412/1816-0395-2018-6-15-19 ◽

2018 ◽

Vol 22 (6) ◽

pp. 15-19

Author(s):

E.H. Sakaeva ◽

L.V. Rudakova

Keyword(s):

Waste Water ◽

Wastewater Treatment ◽

Beneficial Effect ◽

Activated Sludge ◽

Biological Treatment ◽

Experimental Studies ◽

Pulp And Paper ◽

Technological Scheme ◽

Biological Wastewater Treatment ◽

Enzyme Complexes

The results of experimental studies on the evaluation of the possibility of using enzyme complexes in the biological treatment of waste water from pulp and paper enterprises are presented. The use of enzyme complexes will increase the efficiency of wastewater treatment by COD and BOD, and will also have a beneficial effect on the hydrochemical and hydrobiological characteristics of activated sludge. Experimental studies have determined the points of introduction of enzyme complexes into the technological scheme of biological wastewater treatment.

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Resistance to Bacterial Spot in Bell Pepper Induced by Acibenzolar-S-Methyl

Plant Disease ◽

10.1094/pdis.2001.85.2.189 ◽

2001 ◽

Vol 85 (2) ◽

pp. 189-194 ◽

Cited By ~ 83

Author(s):

A. M. Romero ◽

C. S. Kousik ◽

D. F. Ritchie

Keyword(s):

Standard Treatment ◽

Negative Impact ◽

Bell Pepper ◽

Yield Response ◽

Bacterial Spot ◽

Crop Season ◽

Xanthomonas Axonopodis ◽

Chemical Inducers ◽

Chemical Treatments ◽

Induction Of Resistance

Bell pepper plants sprayed with the chemical acibenzolar-S-methyl (ABM, Actigard 50 WG) showed resistance to subsequent infections with the bacterial spot agent Xanthomonas axonopodis pv. vesicatoria. Induction of resistance was independent of the cultivar used, and was expressed as early as 3 days after treatment and continued for at least 2 weeks. In the field, applications of ABM every 2 weeks, alone or in combination with copper, resulted in disease control similar to the standard treatment of copper plus maneb. Yield response was variable, with certain combinations of chemical treatments and cultivars producing yields as large as the copper plus maneb treatment. In contrast, weekly applications during the entire crop season had a negative impact on yield. In plots maintained free of bacterial spot, applications of ABM every 2 weeks caused a reduction in yield for one cultivar of six tested. The use of chemical inducers for the control of bacterial spot on bell pepper, while generally promising, may result in an unpredictable loss in fruit yield.

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Identification Soybean Processed Waste Environmental Impact and Management Alternatives (Case Study City of Jakarta Selatan)

SEAS (Sustainable Environment Agricultural Science) ◽

10.22225/seas.5.2.3716.122-129 ◽

2021 ◽

Vol 5 (2) ◽

pp. 122-129

Author(s):

Naomi Aurora Margareth Br. Simanjuntak ◽

Alfiyah Najwa ◽

Muhamad Hisyam Dhiya Ulhaq ◽

Mutiara Octaviani ◽

Deni Adnan ◽

...

Keyword(s):

Wastewater Treatment ◽

Waste Treatment ◽

Negative Impact ◽

Treatment Technology ◽

Trickling Filters ◽

Industry Waste ◽

The People ◽

Management Alternatives ◽

Processed Waste

Processed soybeans such as tempeh and tofu are some of the foods that the people of Indonesia favour. The Tempe and Tofu processing factory produce tofu with the essential soybean ingredients as much as 17 kg every day. The tofu production process starts from soybean immersion, grinding, boiling, filtering, compaction, moulding, cutting, to frying tofu. Production activities from the tofu industry will certainly produce solid and wastewater. These wastes can have a negative impact on the environment. Therefore, the waste must be managed and treated correctly to create an environmentally friendly industry and improve environmental quality. Tofu industry waste management and treatment can be done by identifying the generation of waste that is a priority to be treated and choosing waste treatment technology. There are three alternatives for wastewater treatment from the tofu industry: the chlorine in wastewater, ponds by forming biofilms using biofilter media, and Trickling Filters.

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Pengaruh Hedonic Value Dan Utilitarian Value Terhadap Impulse Buying Di Mediasi Oleh Shopping Life Style Pada Industri Kulit Sidoarjo

BALANCE: Economic, Business, Management and Accounting Journal ◽

10.30651/blc.v16i2.3135 ◽

2019 ◽

Vol 16 (2) ◽

Author(s):

Krido Eko Cahyono

Keyword(s):

Path Analysis ◽

Indirect Effect ◽

Negative Impact ◽

Linear Regression Analysis ◽

Multiple Linear Regression Analysis ◽

Impulse Buying ◽

Leather Industry ◽

Hedonic Value ◽

Utilitarian Value ◽

Industry Center

ABSTRACT Sidoarjo, is a region that was hit by a national disaster, in the form of mud, giving an image to the community, that the disaster had a negative impact on the existence of small industrial centers located in Tanggulangin, and has been the mainstay of leather bags and suitcases in Sidoarjo. The level of public purchases of bags and luggage shows a downward trend since the occurrence of the disaster. Realizing the existence of these consequences, efforts need to be raised again giving stimulus to the wider community to shop at the Bag and Suitcase Industry Center in Tanggulangin, Sidoarjo. This research requires data and information from respondents, namely consumers of leather products who shop at the Tanggulangin Leather Industry Center in Sidoarjo.The purpose of this study was to find out that Hedonic and Utilitarian Value directly influence Impulse Buying. To find out the Hedonic Value has an indirect effect on Impulse Buying through shopping lifestyle, to find out the Utilitarian Value has an indirect effect on Impulse Buying through shopping lifestyleTo test the influence of intervening variables, Path Analysis method is used. Path analysis is an extension of multiple linear regression analysis that serves to estimate causality between variables that have been previously determined. In this study there are 4 variables that will be analyzed such as HedonicValue, Utilitarian Value, Shopping Lifestyle towards Impulse Buying with Shopping Lifestyle as an intervening variable.Keywords : Hedonic Value, Utilitarian Value, Shopping Lifestyle, and Impulse BuyingCorrespondence to : [email protected] ABSTRAK Sidoarjo, merupakan wilayah yang terkena bencana nasional, berupa lumpur , memberikan image kepada masyarakat, bahwa bencana tersebut memberikan dampak negatif terhadap keberadaan sentra industri kecil yang terletak di Tanggulangin, dan selama ini menjadi andalan industri Tas dan Koper dari kulit di sidoarjo. Tingkat pembelian masyarakat atas produk tas dan koper menunjukkan kecenderungan menurun sejak terjadinya bencana tersebut. Menyadari akan adanya akibat tersebut, perlu upaya –upaya mengangkat kembali memberikan stuimulus kepada masyarakat luas untuk berbelanja di Sentra Industri Tas dan Koper di tanggulangin,Sidoarjo. Penelitian ini memerlukan data dan informasi dari responden yaitu konsumen produk kulit yang berbelanja di Sentra Industri Kulit Tanggulangin Sidoarjo.Tujuan dalam penelitian ini adalah Untuk mengetahui Hedonic dan Utilitarian Value berpengaruh langsung terhadap Impulse Buying , Untuk mengetahui Hedonic Value berpengaruh tidak langsung terhadap Impulse Buying melalui shopping lifestyle, Untuk mengetahui Utilitarian Value berpengaruh tidak langsung terhadap Impulse Buying melalui shopping lifestyleUntuk menguji pengaruh variabel intervening digunakan metode analisis jalur (Path Analysis). Analisis jalur merupakan perluasan dari analisis regresi linear berganda yang berfungsi untuk menaksir hubungan kausalitas antar variabel yang telah ditetapkan sebelumnya. Dalam penelitian ini ada 4 variabel yang akan dianalisis parameternya yaitu HedonicValue , Utilitarian Value, Shopping Lifestyle terhadap Impulse Buying dengan Shopping Lifestyle sebagai variabel intervening.Kata kunci : Hedonic Value, Utilitarian Value, Shopping Lifestyle, dan Impulse Buying Korespondensi : [email protected]

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SHOPPING LIFE STYLE MEMEDIASI HUBUNGAN HEDONIC DAN UTILITARIAN VALUE TERHADAP IMPULSE BUYING

EKUITAS (Jurnal Ekonomi dan Keuangan) ◽

10.24034/j25485024.y2016.v20.i2.1779 ◽

2017 ◽

Vol 20 (2) ◽

pp. 188

Author(s):

Krido Eko Cahyono ◽

Khuzaini Khuzaini ◽

Hermono Widiarto

Keyword(s):

Path Analysis ◽

Indirect Effect ◽

Life Style ◽

Negative Impact ◽

Linear Regression Analysis ◽

Multiple Linear Regression Analysis ◽

Impulse Buying ◽

Leather Industry ◽

Utilitarian Value ◽

Hedonic Utilitarian

Shopping Life Style memediasi hubungan Hedonic dan Utilitarian Value terhadap Impulse Buying Krido Eko [email protected] WidiartoSekolah Tinggi Ilmu Ekonomi Indonesia (STIESIA) Surabaya ABSTRACT Sidoarjo an area affected by national disasters such as mud, giving the image to the public that the disasters had a negative impact on the existence of a small industrial centers are located in Tanggulangin. The level of public purchases on product bags and suitcases showed a declining trend since the occurrence of the disaster. Aware of the result, efforts to provide stuimulus reappointed to the general public to shop in the Center Industrial Bags and Luggage in Tanggulangin, Sidoarjo. This study requires data and information from respondents are skin products consumers who shop at Sentra Leather Industry waas. The purpose of this research is to know Hedonic and Utilitarian direct effect on Impulse Buying, To know Hedonic indirect effect on Impulse Buying through a shopping lifestyle, To know Utilitarian indirect effect on Impulse Buying through lifestyle shopping. To test the effect of intervening variables used path analysis method (Path Analysis). Path analysis is an extension of the multiple linear regression analysis that serves to assess causal relationships between variables that have been previously defined. In this study, there are four variables that will be analyzed parameters are Hedonic, Utilitarian, Shopping Lifestyle Shopping on Impulse Buying with Lifestyle as an intervening variable.

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