Biological Wastes最新文献_第5页

Kinetic and economic considerations of biogas production systems 沼气生产系统的动力学和经济考虑

Biological Wastes Pub Date : 1990-01-01 DOI: 10.1016/0269-7483(90)90141-E

B.K. Bala, M.A. Satter

引用次数: 11

Carbon, nitrogen and phosphorus concentrations in aggregates of organic waste-amended soils 有机废物改良土壤团聚体碳、氮、磷浓度

Biological Wastes Pub Date : 1990-01-01 DOI: 10.1016/0269-7483(90)90164-N

J.S.C. Mbagwu, A. Piccolo

{"title":"Carbon, nitrogen and phosphorus concentrations in aggregates of organic waste-amended soils","authors":"J.S.C. Mbagwu, A. Piccolo","doi":"10.1016/0269-7483(90)90164-N","DOIUrl":"10.1016/0269-7483(90)90164-N","url":null,"abstract":"<div><p>This study was undertaken to evaluate the long-term effects of organic wastes on dry aggregate size distribution and on the C, N and available-P concentrations within the different aggregate fractions of some agricultural soils in North-Central Italy. Topsoils (0–20 cm) which had been amended for several years with either pig slurry (PS), cattle slurry (CS) or sewage sludge (SS) were separated into four macro-aggregate classes (4-2, 2-1, 1-0·5, 0·5-0·25 mm) and three micro-aggregate classes (0·25-0·125, 0·125-0·05 and < 0·05 mm) by dry sieving. Compared with the unamended soils, there was generally a slight increase in the proportion of the 4-2 mm macro-aggregate class following waste application. Irrespective of treatment, macro-aggregates (>0·25 mm) constituted > 70% of the total aggregate fractions.</p><p>Average increases of 17, 13 and 67% (organic C), 18, 13 and 57% (total N) and 430, 372 and 642% (available P) were obtained from additions of PS, CS and SS, respectively, and increases were found in all aggregate fractions following waste application. There was a close positive correlation between the concentrations of C, N and to a lesser extent P, in the aggregates and their silt-plus-clay contents. In terms of total contents, these elements were preferentially concentrated in the macro-aggregates. Only slight differences in the C/N ratios of the aggregates were observed but their C/P and N/P ratios decreased significantly (<em>P</em> ≤ 0·05) following waste application.</p></div>","PeriodicalId":100177,"journal":{"name":"Biological Wastes","volume":"31 2","pages":"Pages 97-111"},"PeriodicalIF":0.0,"publicationDate":"1990-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0269-7483(90)90164-N","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75443886","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 57

Chemical and microbiological changes during solid substrate fermentation of wheat straw with Coprinus fimetarius 麦秸固体基质发酵过程中化学和微生物的变化

Biological Wastes Pub Date : 1990-01-01 DOI: 10.1016/0269-7483(90)90127-E

Naresh Kumar, Kishan Singh

引用次数: 20

Charred waste of oxalic acid plant as an adsorbent of toxic ions and dyes 草酸厂焦化废渣作为有毒离子和染料的吸附剂

Biological Wastes Pub Date : 1990-01-01 DOI: 10.1016/0269-7483(90)90078-7

Nandita Shukla, G.S. Pandey

引用次数: 13

An agricultural waste-fuelled furnace for mechanical dryers 用于机械干燥机的农业废物燃料炉

Biological Wastes Pub Date : 1990-01-01 DOI: 10.1016/0269-7483(90)90062-W

R. Viswanathan, V.V. Sreenarayanan, K.R. Swaminathan

引用次数: 0

Growth of Ornidia obesa (Diptera: Syrphidae) Larvae on decomposing coffee pulp 焦斑鸟(双翅目:食蚜科)幼虫在分解咖啡浆上的生长

Biological Wastes Pub Date : 1990-01-01 DOI: 10.1016/0269-7483(90)90144-H

G. Lardé

引用次数: 17

Application of rumen microorganisms for a high rate anaerobic digestion of papermill sludge 瘤胃微生物在造纸污泥高速率厌氧消化中的应用

Biological Wastes Pub Date : 1990-01-01 DOI: 10.1016/0269-7483(90)90046-U

Huub J. Gijzen , Piet J.L. Derikx, Godfried D. Vogels

{"title":"Application of rumen microorganisms for a high rate anaerobic digestion of papermill sludge","authors":"Huub J. Gijzen , Piet J.L. Derikx, Godfried D. Vogels","doi":"10.1016/0269-7483(90)90046-U","DOIUrl":"10.1016/0269-7483(90)90046-U","url":null,"abstract":"<div><p>The anaerobic digestion of papermill sludge containing a high amount of inorganic matter was studied. Despite the presence of about 58% inorganic matter in the substrate, a high rate of hydrolysis and subsequent acid formation could be achieved in an acidogenic reactor which was inoculated with rumen microorganisms. Degradation efficiency of neutral detergent fibre amounted to 62% at high loading rate (34·2 g volatile solids per litre per day) and short solid retention time (51 h). In order to study the effect of accumulation of inorganic matter in the reactor, degradation efficiency was studied at various loading rates and solid retention times. An increase of solid retention time to 74 h resulted in a decreased degradation efficiency, probably due to an increased ash content in the reactor under these conditions. The effect of inorganic matter accumulation was also studied after coupling of the rumen derived acidogenic reactor to an upflow anaerobic sludge blanket-type methanogenic reactor. By using this two-stage digestion process an overall conversion of papermill sludge into biogas could be realized. The operation over about three months of the two-stage process was studied in terms of process stability, nutrient recycling and accumulation of inorganic matter.</p></div>","PeriodicalId":100177,"journal":{"name":"Biological Wastes","volume":"32 3","pages":"Pages 169-179"},"PeriodicalIF":0.0,"publicationDate":"1990-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0269-7483(90)90046-U","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74452019","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 26

Contents of volume 32 第32卷内容

Biological Wastes Pub Date : 1990-01-01 DOI: 10.1016/0269-7483(90)90065-Z

引用次数: 0

The effects of using various types of carbonaceous substrate on UASB granules and on reactor performance 不同碳质基质对UASB颗粒及反应器性能的影响

Biological Wastes Pub Date : 1990-01-01 DOI: 10.1016/0269-7483(90)90143-G

J. Morgan, J. Goodwin, D. Wase, C. Forster

引用次数: 19

Enhancement of dry anaerobic batch digestion of the organic fraction of municipal solid waste by an aerobic pretreatment step 用好氧预处理步骤增强城市生活垃圾有机组分的干式厌氧分批消化

Biological Wastes Pub Date : 1990-01-01 DOI: 10.1016/0269-7483(90)90159-P

E.ten Brummeler, I.W. Koster

{"title":"Enhancement of dry anaerobic batch digestion of the organic fraction of municipal solid waste by an aerobic pretreatment step","authors":"E.ten Brummeler, I.W. Koster","doi":"10.1016/0269-7483(90)90159-P","DOIUrl":"10.1016/0269-7483(90)90159-P","url":null,"abstract":"<div><p>The start-up of the dry anaerobic batch digestion by the BIOCEL-concept of the organic fraction of municipal solid waste (MSW) is unbalanced when a methanogenic inoculum (digested sewage sludge) is added to a total solids concentration of 35%. The unbalanced conditions are the result of the rapid degradation of easily-degradable compounds which are present in the organic fraction. Enhancement of the first start-up of the dry batch digestion was tried by applying an aerobic partial-composting step. By this aerobic treatment the easily degradable compounds are removed. After the composting step the anaerobic digestion will be limited by the conversion of the ligno-cellulose part of the organic fraction. It appeared that at least 19·5% of the volatile solids (VS) should be converted during the aerobic composting period before acid formation in the digestion was in balance with the methane formation. This amount of aerobically degraded VS means a 40% loss of potential biogas. The loss of a part of the biogas is a major drawback to the partial composting as a method for enhancing the start-up of the dry anaerobic digestion. A shorter composting period which is combined with another start-up method might be a feasible method to decrease the energy input of the dry digestion process.</p></div>","PeriodicalId":100177,"journal":{"name":"Biological Wastes","volume":"31 3","pages":"Pages 199-210"},"PeriodicalIF":0.0,"publicationDate":"1990-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0269-7483(90)90159-P","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77093769","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 80